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Kick start

A kick start, also known as a kickstarter, is a mechanical device primarily used to start internal combustion engines on motorcycles and other small vehicles by means of a pivoting lever that the operator kicks downward with their foot to manually rotate the crankshaft and initiate the engine's combustion cycle.^[1] The system employs a ratcheting gear and spring-loaded mechanism that engages the crankshaft during the downward stroke while allowing the lever to reset without reversing, thus preventing injury from engine backfire.^[2] The kick start was invented by British engineer Alfred Angas Scott (1875–1923), who developed it as part of his pioneering two-stroke motorcycle designs in the early 1900s.^[3] Scott developed a pawl-and-ratchet starting system, patented in the early 1900s, which he integrated into production Scott motorcycles starting in 1909, marking a significant advancement over earlier hand-crank or pedal methods that were cumbersome and hazardous.^[4] This innovation quickly became standard on motorcycles worldwide, enabling reliable starting without electrical components and contributing to the accessibility and popularity of motorized two-wheelers through the mid-20th century.^[5] Although electric starters were introduced on some models as early as the 1960s—such as on the 1965 Harley-Davidson Electra Glide—the kick start remained the dominant method until the 1970s and 1980s, when battery-powered systems became more reliable and widespread due to advances in automotive electrical technology.^[6]^[7] By the late 1980s, most street-legal motorcycles had phased out kick starts as primary starters in favor of electric ones, though many retained them as a backup for reliability in remote areas or during battery failure.^[8] In contemporary use, kick starts persist on off-road dirt bikes for their lightweight simplicity and effectiveness in rugged environments without electrical dependencies, as well as on low-cost motorcycles in emerging markets and as optional conversions for vintage or custom builds.^[7]^[9] Their enduring legacy lies in symbolizing the hands-on, mechanical ethos of early motorcycling, with enthusiasts often valuing the physical engagement and the "one-kick start" satisfaction they provide.^[10]

History

Invention and early adoption

The kick start mechanism was invented by Alfred Angas Scott in 1908 for use on the Scott Motorcycle, a pioneering British two-stroke twin-cylinder design that marked the first practical implementation of this starting method.^[3] Scott's innovation addressed the limitations of earlier pedal and hand-cranking systems by allowing the rider to engage the engine with a foot-operated lever connected to the crankshaft, simplifying startup for single-cylinder and multi-cylinder engines alike. The first production Scott motorcycles incorporating this feature entered modest production in 1909, featuring a 333cc water-cooled two-stroke twin with the kickstart as a standard component.^[11] Early patents and designs for kick start systems proliferated in the 1900s through the 1920s, building on Scott's foundational work with refinements such as ratcheting lever mechanisms to prevent reverse torque or "kickback" during failed starting attempts, which could otherwise injure the rider's leg. These developments, often filed in Britain and Europe, emphasized durable spring-loaded ratchets and geared sectors to ensure one-way motion, enhancing safety and reliability in variable conditions.^[5] Initial adoption of the kick start occurred primarily among British and European motorcycle manufacturers in the 1910s and 1920s, driven by the absence of dependable electric starting alternatives, which were bulky, battery-dependent, and prone to failure in cold or remote environments. Prominent examples include Triumph models from the early 1900s onward, which transitioned from pedal starters to kick mechanisms on their single-cylinder engines, and BSA's lineup in the 1920s, where the feature became integral to their 500cc twins for civilian and sporting use.^[12] This mechanism proved particularly valuable during World War I, enabling portable and lightweight starting on off-road and military motorcycles like Scott models, which served in reconnaissance roles for British forces due to their ease of initiation without external power sources.^[13] By the 1930s, the kick start had evolved into a standard feature across most motorcycle designs, solidifying its role as the primary starting method until the rise of electric systems.^[14]

Widespread use and decline

Following World War II, kick-start mechanisms achieved widespread dominance in the global motorcycle, scooter, and small engine markets, serving as the primary starting method due to their mechanical simplicity and reliability in diverse environments. In the 1950s and 1960s, they powered the majority of two-wheeled vehicles, particularly in developing regions where electrical infrastructure was limited. The Honda Super Cub, launched in 1958 with a kick-start system, epitomized this era's trends; its affordable, lightweight design and four-stroke engine made it ideal for urban and rural use, leading to rapid adoption across Asia. By 1960, Honda had produced over 756,000 Super Cubs cumulatively, fueling a boom in mass-market mobility that accounted for a significant portion of the era's two-wheeler sales.^[15] In India, manufacturers like Bajaj Auto began producing kick-start scooters and motorcycles in the 1950s, while Royal Enfield continued with models such as the Bullet series, supporting local economies and transportation needs amid post-independence growth. Similarly, in China, the Chang Jiang 750, a sidecar motorcycle based on Soviet designs, entered production in the late 1950s and became a staple for military and civilian use through the 1970s, all relying on kick starts for their robust, battery-independent operation.^[16] The ubiquity of kick starts stemmed from several practical advantages, including their low manufacturing cost and elimination of the need for batteries or electrical systems, which proved invaluable in remote or underdeveloped areas with unreliable power supplies. Mass production techniques in Asia further amplified this, with Honda establishing local assembly plants in countries like Thailand and Indonesia by the 1960s, enabling affordable distribution of Super Cub variants that dominated urban commuting. Kick-start-equipped small-displacement engines powered the majority of motorcycles in emerging markets, as exemplified by the Super Cub's role in Southeast Asia's economic expansion, where it facilitated everything from family transport to delivery services without the added weight or maintenance of electrical components. This simplicity aligned with the post-war emphasis on economical, durable vehicles, allowing widespread accessibility in regions like India and China, where annual motorcycle production surged from modest beginnings in the 1950s to millions by the 1970s.^[17] The decline of kick starts began in the mid-1970s as electric starters gained traction, driven by advancements in battery technology and consumer demand for convenience. Early electric systems, such as the Bosch Dynastart—a combined starter-generator introduced in the 1950s for small vehicles—laid groundwork, but it was Japanese manufacturers who popularized dedicated electric starters on motorcycles during the 1970s. The 1969 Honda CB750 marked a pivotal shift, offering electric starting as standard and setting a benchmark for reliability in larger-displacement bikes. By the late 1970s, models from Yamaha, Suzuki, and Kawasaki followed suit, integrating electric starters across their lineups to appeal to broader markets. The 1973 oil crisis accelerated the trend toward lightweight, fuel-efficient designs, boosting sales of small motorcycles but also highlighting the limitations of manual starting in high-volume urban use. Additionally, emerging emissions regulations, such as the U.S. EPA's 1974 proposals limiting hydrocarbon output to 8 g/mi for motorcycles, favored electric starters for their ability to ensure consistent cold starts and reduce variability in emission testing. By the 1990s, kick starts had been largely phased out from on-road vehicles in favor of electric systems, though they persisted in niche off-road and budget applications.^[18]^[19]^[20]

Design and components

Key mechanical parts

The kick start system in internal combustion engines, particularly motorcycles, consists of several core mechanical components designed for manual crankshaft rotation to initiate engine firing. The primary parts include the ratcheting lever, also known as the foot pedal, which is typically spring-loaded to facilitate user input; the drive gear, which transmits torque to the engine; the ratchet mechanism functioning as a one-way clutch to permit forward rotation only; and the return spring, which retracts and folds the lever after use.^[21]^[2] These components are assembled in a compact unit, with the lever pivotally attached to a starter shaft that incorporates the ratchet and drive gear. The ratchet mechanism, often comprising pawls or a quadrant gear engaging a ratchet wheel, ensures unidirectional drive while allowing the lever to reset without back-driving the crankshaft. The drive gear on the starter shaft meshes with an idler gear, which in turn connects to a pinion on the crankshaft, forming a geared chain for torque transfer. Materials for these parts emphasize durability, with the lever and shaft commonly constructed from high-strength steel alloys such as chromium-vanadium or EN24T to withstand repeated impacts and torsional loads.^[21] Gear ratios in the drive system are optimized to balance effort and engine rotation, typically providing 4-6 strokes to achieve compression in four-stroke engines; for example, a 1:3 ratio in common motorcycle configurations multiplies rider torque while limiting crankshaft speed per kick to about 1.5 revolutions.^[22] The entire assembly integrates directly with the engine on the right side of the crankshaft housing, where the starter shaft connects via a spline or keyway to the pinion gear, enabling secure torque transfer without interfering with other drivetrain elements.^[21]^[2] Conceptually, the assembly can be visualized as a hierarchical chain: the foot pedal at the lever's end provides the input force, transmitted through the spring-loaded ratchet to the shaft's drive gear, which engages the idler and crankshaft pinion in sequence, all enclosed within or adjacent to the engine case for protection and accessibility. This design, first pioneered in Scott engines around 1908, prioritizes simplicity and reliability in torque delivery.^[11]

Variations across engine types

Kick start mechanisms exhibit notable differences between two-stroke and four-stroke engines primarily due to variations in compression ratios and firing cycles. Two-stroke engines, with their simpler ported designs and lower effective compression during startup, generally require less force to initiate cranking, allowing for straightforward kick start operation without additional aids in many cases. In contrast, four-stroke engines feature higher compression ratios—often exceeding 9:1 in motorcycle applications—which can make manual starting more demanding, necessitating decompression devices to temporarily reduce cylinder pressure and ease the kick lever's rotation. For four-stroke designs, decompression levers or automatic compression releases became common adaptations, particularly in robust singles. In 1950s Harley-Davidson Panhead engines, a manual decompression lever on the cylinder head allowed riders to vent compression via the exhaust valve, facilitating easier kick starts on high-displacement V-twins with compression around 7:1 to 8:1.^[23] Similar automatic systems, integrated into the kick start linkage, appeared in off-road four-strokes like the 1983 Honda XR350R, where they released compression only during the initial pedal stroke to mimic the lower resistance of two-strokes.^[24] Two-strokes, such as the 1975–1979 Yamaha DT400 Enduro's 400cc single, occasionally incorporated automatic compression releases as well, though primarily to address inconsistent starting from CDI ignition rather than inherent compression challenges.^[25] Vehicle-specific adaptations further tailor kick start designs to operational demands. In post-1980s all-terrain vehicles (ATVs) and dirt bikes, extended kick levers—often 8–10 inches long—provide greater mechanical advantage for riders in seated or uneven terrain positions, reducing fatigue during repeated attempts on inclined surfaces. Scooters like classic Vespa models employ compact, foldable kick pedals that retract into the frame for urban maneuverability, integrating seamlessly with the two-stroke engine's slim profile while maintaining accessibility. Rare applications extended to early automobiles, where hand-crank evolutions influenced foot-operated variants in some prototype motorcycles, though kick starts remained predominantly motorcycle-oriented.^[26] Modern iterations incorporate material advancements and hybrid configurations, particularly in off-road and emerging-market vehicles. Since the 2000s, kick levers on enduro and trail bikes have shifted to lightweight 7075 aluminum alloys while enhancing durability against impacts.^[27] In regions with unreliable electricity, hybrid setups previously paired kick starts with electric backups, as seen in Royal Enfield Bullet and Classic 350 models up to the early 2020s (as of 2023), though many current production variants as of 2025 have phased out the kick mechanism in favor of electric start only.^[28]^[29] Representative examples include the 1970s Yamaha DT series for off-road two-strokes, featuring a standard ratchet-engaged lever suited to trail versatility, versus the kick start in earlier Royal Enfield's Indian-market classics, which retained manual decompression for everyday robustness.

Operation

Starting sequence

To initiate the starting sequence for a kick-start-equipped internal combustion engine, typically found on motorcycles, the operator first prepares the vehicle by ensuring the ignition switch is turned to the ON position and the transmission is shifted into neutral to prevent unintended movement.^[30] For cold starts, the choke is engaged to enrich the fuel-air mixture, while the throttle remains fully closed to avoid flooding the engine; the kickstart lever is then unfolded from its stored position on the right side of the engine case.^[31] The kick action begins with the operator gently rotating the lever to prime the engine, advancing the crankshaft to just past top dead center on the compression stroke to draw in fuel and build initial momentum, especially important for four-stroke engines to avoid kickback.^[32] The operator then positions their foot on the lever and applies a swift, firm downward force through its full stroke, which rotates the crankshaft approximately 360 to 720 degrees depending on the gear ratio in the kickstart mechanism.^[33] This rotation builds compression in the cylinder by drawing in and compressing the fuel-air mixture during the intake and compression strokes. Successful ignition requires the crankshaft to achieve a minimum speed of 300 to 500 RPM to generate sufficient compression and spark timing for the mixture to ignite via the spark plug at the end of the compression stroke, completing the power stroke and initiating the exhaust stroke.^[34]^[35] Once the engine fires and begins running, it transitions to idle speed, and the kickstart lever automatically disengages through the ratchet mechanism, allowing it to slip freely without further driving the crankshaft.^[31] Note that operation varies slightly between two-stroke and four-stroke engines, with two-strokes generally requiring less priming due to lower compression; see the Design section for variations.

Engagement and disengagement

The engagement of a kick start mechanism occurs when the rider depresses the lever, causing the starter sector gear or quadrant gear to rotate and mesh with a pinion gear or idler gear connected to the crankshaft spline.^[21] This meshing is facilitated by a ratchet system, such as a pawl or full ratchet design, which locks the gears together to transmit torque in one direction only, preventing reverse motion during the kick.^[2] In designs like those using a starter clutch with square keyways, the clutch locks securely to the mainshaft, ensuring efficient power transfer from the lever to the engine.^[2] Torque transfer relies on gear reduction between the kick start lever and the crankshaft, amplifying the force applied by the rider's foot to overcome engine compression and achieve the rotational speed needed for ignition.^[21] For instance, in primary drive configurations, the starter gear drives an idler gear that connects directly to the clutch basket and crankshaft, bypassing the transmission for reliable starting even in gear.^[21] This setup converts linear foot pressure into rotational force on the crankshaft, typically generating enough momentum to spin the engine at starting speeds.^[2] Disengagement happens automatically once the engine fires, with mechanisms like ramps on the starter mainshaft gear and a release cam disc aligning to push the gear out of mesh, often aided by a spring or centrifugal force from the rotating components.^[2] This release prevents backdrive from the running engine, which could otherwise force the lever upward and injure the rider.^[36] The lever then auto-folds via a return spring and detent system, returning to its upright position while the ratchet unlocks unidirectionally.^[36] A common failure mode involves worn ratchets or springs in the engagement system, leading to slippage where the lever rotates without fully transmitting torque to the crankshaft.^[21] This wear typically results from repeated mechanical stress and can necessitate disassembly of the crankcase for repair.^[21]

Advantages and disadvantages

Benefits in reliability and cost

Kick start mechanisms offer significant reliability advantages over electric starters due to their mechanical simplicity and independence from electrical components. Unlike electric systems, which rely on batteries that can fail due to discharge, damage, or degradation, kick starts operate without any battery dependency, ensuring functionality even when the electrical system is compromised.^[37] This makes them particularly dependable in extreme conditions, such as cold weather where batteries lose efficiency or wet environments like floods where electrical circuits may short.^[37] Furthermore, their durable design, featuring fewer moving parts prone to failure, allows for a long lifespan with only minimal maintenance required, such as occasional lubrication of the lever and ratchet assembly.^[37] In terms of cost, kick starts provide substantial economic benefits throughout the lifecycle of a motorcycle. Manufacturing costs are lower because they eliminate the need for electric motors, solenoids, wiring harnesses, and batteries, compared to electric-equipped models.^[38] Ownership expenses are also reduced, as there are no recurring costs for battery replacements or repairs to complex electrical components, leading to lower overall maintenance and repair needs.^[37]^[39] Weight efficiency is another key benefit, especially for lightweight vehicles. A kick start assembly adds less weight to the motorcycle than an electric starter system including the battery and supporting electronics.^[37] This minimal addition is ideal for small-displacement bikes, such as 100cc models, enhancing fuel efficiency and maneuverability without compromising performance.^[7] Environmentally, kick starts contribute to sustainability by avoiding electronic waste associated with batteries and wiring, which require periodic disposal and recycling. Their simplicity aligns well with low-emission needs in developing markets, where affordable, durable motorcycles support efficient transportation without relying on resource-intensive electrical infrastructure.^[37]

Drawbacks in usability and safety

Kick starting a motorcycle demands significant physical effort from the rider, typically requiring the application of substantial leg force to rotate the crankshaft and engage the engine. This manual process can be particularly tiring for novices, those with physical limitations, or riders recovering from injuries, as it involves repeated downward kicks that strain the lower body.^[40]^[37] In cold conditions, starting the engine often necessitates multiple attempts, with riders potentially needing several kicks to prime the system and achieve ignition, further exacerbating fatigue. The physical strain associated with repeated kicks heightens the risk of foot and leg injuries, such as bruises or sprains, especially without proper technique or supportive footwear. This makes kick starting less accessible for elderly riders or those with disabilities, who may face reduced strength and flexibility that complicate the exertion required.^[8]^[41]^[42] Maintenance of the kick start mechanism presents additional challenges, as the exposed lever is vulnerable to damage from dirt and mud accumulation during off-road use, potentially leading to bending or seizing. Compared to electric starters, diagnosing issues with kick start systems can be more labor-intensive, lacking the straightforward electrical tests available for battery-dependent components. These usability drawbacks contributed to the widespread decline of kick starts in the late 1970s and 1980s, as affordable and user-friendly electric starters became standard on most motorcycles, prioritizing convenience over mechanical simplicity.^[7]^[38] While cost benefits in reliability help offset some usability concerns, the overall shift favored easier operation for broader adoption.

Modern usage and alternatives

Current applications in vehicles

Kick starts continue to find primary application in off-road dirt bikes designed for racing and rugged terrain, where minimizing weight and maximizing reliability in battery-less setups is prioritized. For instance, the 2025 Suzuki RM-Z450 motocross bike employs a kickstart-only system with no electric starter or battery, featuring a long kickstart lever and optimized internal gear ratios for efficient engine ignition in demanding conditions.^[43]^[44] This design choice enhances performance in professional racing circuits and amateur off-road events by reducing overall vehicle mass and eliminating electrical dependencies that could fail in harsh environments.^[45] In rural and remote areas, kick starts serve as a reliable backup mechanism on all-terrain vehicles (ATVs), particularly utility models used for farming, hunting, and trail navigation where access to charging infrastructure is limited. Enthusiasts and operators in these settings value the simplicity of kick starting for quick restarts after battery depletion or in extreme conditions, as seen in models like the Honda TRX series ATVs, where kick starts provide reliability on certain variants and aftermarket conversions enable dual electric and kick functionality for versatility.^[46]^[47] This dual functionality ensures operational continuity in isolated locations, such as agricultural fields or backcountry trails.^[48] Niche markets, including vintage motorcycle restorations and enthusiast communities, preserve kick starts on classic models for their mechanical authenticity and as a secondary starting method. Royal Enfield Classic series bikes, popular among collectors, often retain or retrofit kickstart levers to evoke traditional riding experiences while providing fallback reliability during long-distance tours or events.^[49] Similarly, small-displacement engines in portable generators and lawnmowers frequently utilize recoil or lever-based manual starts akin to kick mechanisms, ensuring functionality without electrical components in off-grid or maintenance-heavy applications.^[50] In developing regions like India and Indonesia, inexpensive commuter motorcycles such as legacy variants of the Bajaj Platina series—cumulatively exceeding 5 million units sold since the 2000s—have historically relied on kick starts for cost-effective urban and rural mobility, though modern iterations increasingly pair them with electric options.^[51]

Integration with electric starters

Hybrid starting systems, combining kick and electric starters, have become standard in the majority of entry-level scooters and mopeds, particularly those with small batteries prone to quick drainage during idling or short trips.^[52] For instance, the Honda Activa series, a leading model since the 2010s, incorporates both mechanisms to ensure reliable ignition even if the battery depletes.^[53] This design positions the electric starter as the primary method for convenience, while the kick starter serves as a reliable backup for scenarios like dead batteries or electrical failures, minimizing downtime without significantly increasing vehicle weight or cost. In these hybrid setups, the starting sequence typically prioritizes the electric method via a button or key turn, engaging the starter motor to crank the engine. If the battery voltage is insufficient—often below 10.5 volts—the system seamlessly allows transition to the kick starter, which mechanically compresses the engine through a lever connected to the crankshaft. This sequential approach enhances usability in urban commuting, where scooters like the TVS Jupiter or Suzuki Access 125 rely on it for daily reliability.^[54] The integration reduces the need for frequent battery recharges, as the kick option bypasses electrical dependency altogether. Advancements in the 2020s have introduced electronic controls via engine control units (ECUs) that optimize this integration, automatically detecting battery status and prioritizing electric start while enabling kick override for low-power conditions. Chinese brands like Lifan exemplify this in models such as the X-Pect 200cc, where dual-start systems incorporate digital monitoring to prevent starter motor strain and ensure smooth engagement.^[55] These ECU-managed hybrids improve efficiency by modulating fuel injection timing during kick starts, reducing emissions and enhancing cold-start performance compared to standalone systems. Looking ahead, pure electric vehicles (EVs) are phasing out mechanical kick starters entirely, relying solely on high-capacity batteries for instant electronic activation, as seen in models like the Honda Activa Electric. However, in gasoline-electric hybrid two-wheelers, kick starters persist as a cost-effective reliability feature, providing redundancy against battery failures in mixed-powertrain designs.^[56] This trend underscores the kick mechanism's enduring role in bridging traditional and electrified mobility.

Safety considerations

Common hazards

One of the primary hazards associated with kick start operation is kickback, a sudden reverse torque exerted by the kick lever due to premature ignition or compression resistance during the starting sequence. This can result in severe leg injuries, such as sprained ankles, bruised shins, or even broken bones, particularly when the rider's foot slips off the lever mid-stroke.^[41] Kickback is especially common in high-compression engines exceeding 500cc, where the increased resistance amplifies the force of the reversal, potentially throwing the rider off balance or over the handlebars.^[10] Mechanical failures in the kick start system also pose significant risks, including lever snap-back, where the kick lever violently returns upward after a failed engagement, potentially tripping the rider or causing falls. Additionally, gear stripping within the kick start mechanism can occur from repeated forceful kicks, leading to complete failure to engage and stranding the rider in unsafe locations without alternative starting options.^[41]^[57] Environmental factors can exacerbate these risks during kick start attempts; slippery surfaces, such as wet grass or mud, increase the likelihood of foot slippage on the lever, amplifying the chance of falls or loss of control over the motorcycle. Failed starts may also lead to contact with hot exhaust components, resulting in thermal burns to the legs or hands, as the pipes can reach temperatures sufficient to cause second-degree injuries upon incidental touching.^[58]^[59]

Mitigation techniques

To mitigate the risks associated with kick starting, particularly kickback from high compression, manual decompression levers have been a standard feature on four-stroke motorcycles since the 1980s, allowing riders to manually release cylinder pressure before initiating the kick. These levers, typically located on the handlebar or engine, open the exhaust valve slightly to vent compressed air, reducing the force required to turn the engine over and minimizing the chance of the kickstarter snapping back.^[60] Riders can further reduce injury risks through established best practices during the kick start process. Maintaining proper body positioning is essential, with the rider's weight centered over the motorcycle for stability, the left foot firmly on the kickstarter, and the right foot ready to support if needed; this stance helps absorb any unexpected movement. For two-stroke engines, a slight throttle crack (about 1/8 to 1/4 open) aids fuel mixture and smoother starting, while four-strokes should start with the throttle fully closed to avoid flooding. Always perform pre-start checks, such as verifying the engine is in neutral, fuel is on, and the bike is warmed if recently run, and wear protective gear including sturdy boots and gloves to guard against foot or hand injuries. If the bike has a manual decompression lever, engage it before kicking, then release just before the full downward stroke.^[8]^[10]^[61] Modern design improvements, such as automatic decompression cams, enhance safety by automatically reducing compression during low-RPM starting without manual intervention. These systems, common in contemporary four-stroke dirt bikes, use centrifugal weights or cam profiles to hold the exhaust valve open until the engine reaches sufficient speed, significantly lowering kickback force and easing starts on high-compression engines. For instance, Yamaha's YZ250F models incorporate an auto-decompression device on the exhaust camshaft, where the decompressor cam must move smoothly during maintenance checks to ensure reliable operation.^[60]^[61] Rider training and education play a crucial role in safe kick starting, with manufacturer manuals providing detailed procedures and warnings to prevent common errors like incomplete kicks or improper throttle use. Organizations like the Motorcycle Safety Foundation emphasize overall starting techniques in their courses, though specific kick start instruction often relies on model-specific guidance.^[61]^[62]

References

[1]
https://www.merriam-webster.com/dictionary/kick-start
[2]
How It Works: The Motorcycle Kickstarter - RideApart.com
Mar 15, 2018 · The system consists of an external spring and a cleverly designed starter sector gear which has two "hard stops" built into it. One stop keeps ...
[3]
Alfred Angas Scott - Graces Guide
Jan 13, 2015 · He is credited with the invention of the kick start. 1908 Founder of the Scott Motor Cycle Co. 1911 Living at Marchfield, Wilmer Drive ...
[4]
Scott Motorcycle History - Sheldon's EMU
The company was founded by Alfred Angas Scott (1875 - 1923), born in Kirkcaldy, Scotland. ... He is credited with the invention of the kick start. Scott ...
[5]
Half bike, half car, all nuts - Motorcycle News
Jul 14, 2025 · Meet Alfred Angas Scott, inventor of the kickstart, potholer and designer of race bikes so successful they had to be mathematically handicapped.
[6]
Dan's Motorcycle Electric Starters
I started riding in 1965. Most of the bikes then used kick starters. Not all, in fact there have been electric starters from way back. I have a book dated 1915 ...
[7]
Why things are: Dirt bikes and electric starters - RevZilla
### Summary of Kick Start Decline and Adoption of Electric Starters in Motorcycles, Especially 1990s
[8]
Kicking Your Bike into Ignition: How to Kickstart a Motorcycle
Aug 7, 2019 · Kickstart uses a ratchet system to turn the crankshaft. Follow through on your kick, use body weight, and start on the compression stroke. ...
[9]
https://www.vikingbags.com/blogs/news/can-you-add-a-kickstart-system-to-your-motorcycle
[10]
How to Kickstart a Motorcycle - RideApart.com
May 12, 2015 · Motorcycles in general use a ratchet type system that engage gear teeth on the kick start mechanism. Once the gear teeth have engaged they ...<|control11|><|separator|>
[11]
Triumph Motorcycles Timeline: The Early Years, 1883-1918
Triumph motorcycle timeline 1883-1918. Part of the history of Triumph motorcycles from 1883 to the present, from Coventry to Meriden to Hinckley.
[12]
A look at the British bikes from WWI - Militarytrader
Jun 21, 2023 · It is particularly desirable to get men who are familiar with the “Scott” motorcycle. 4. The officers and [non-commissioned officers] for 10 ...
[13]
History of Scott | Cycle World | JUNE 1972
Jun 1, 1972 · During the next few years Scott labored to design a better motorbike, and by 1908 he had a good enough design to consider commercial production.<|control11|><|separator|>
[14]
Total Super Cub Production Reaches 35 Million Units - Honda Global
Dec 17, 2002 · Total Super Cub Production Reaches 35 Million Units ; 1958, 24,195, 24,195 ; 1959, 167,443, 191,638 ; 1960, 564,365, 756,003.
[15]
Two-Wheeler Segment Evolved Over 78 Years: Ola Electric Motorcycle
Aug 14, 2024 · The historical development of the two-wheeler industry in India can be traced back to the period between the 1950s and 1980s. During the 1960s ...
[16]
Asia's Lasting Love Affair with Honda Super Cub - Kiripost
Dec 6, 2021 · Honda is the engine that has moved Asia since it made its debut in 1958. Today, it continues to dominate roads across the region.
[17]
Kick-Starting An Old Motorcycle
Before turning on the fuel and ignition switch, kick the bike over two or three times. This is to get the engine primed with oil. Then turn on the fuel valve, ...
[18]
The World's first Motorcycles with an Electric Start ! - YouTube
Sep 2, 2023 · In this video you will see the absolute first motorcycles with a built-in electric starter. And believe it or not, the history of electric ...Missing: 1970s | Show results with:1970s
[19]
Motorcycle Emissions | Cycle World | NOV 1975
Nov 1, 1975 · In the winter of 1974, the U.S. Environmental Protection Agency proposed a motorcycle emission standard of 8 g/mi. hydrocarbons. Since that time ...Missing: starter | Show results with:starter
[20]
kick starters - Dan's Motorcycle Repair
In the Primary Drive System the gear on the Kick Starter shaft (#1) moves and engages the Kick Start idler gear (#2) which turns a small Low Pinion gear (#3) on ...
[21]
Kick start ratio? | Triumph Rat Motorcycle Forums
Feb 20, 2019 · Crankshaft turns 540 degrees per kick starter stroke. 1.5 complete revolutions. So each cylinder gets 1 compression stroke per kick.
[22]
Harley-Davidson Engine Timeline: Big Twins
**Summary of Kick Start and Decompression in Harley-Davidson Engines (1950s):**
[23]
Honda Xr350r | Cycle World | MAY 1983
May 1, 1983 · There's an automatic compression release linked to the kick start. Llick on the choke if the engine's cold, forget the choke if it's warm, and ...Missing: differences | Show results with:differences<|control11|><|separator|>
[24]
Retrospective: Yamaha DT400 Enduro: 1975 - 1979 | Rider Magazine
Feb 18, 2010 · I have a 1976 DT400 that I've been riding. Starting when hot is usually pretty easy and mostly just needs one kick. From cold it needs choke ...
[25]
https://ridermagazine.com/2010/02/18/retrospective-yamaha-dt400-enduro-1975-1979/
[26]
Kick Start Levers - Motocross, Enduro, Trail, Adventure
$$130 delivery 60-day returnsAS3 Performance kick start levers are for Enduro, Motocross, Supermoto, Trail & Adventure bikes, made from 7075 aluminum, and come in black or silver.
[27]
Royal Enfield Launches Six New Variants Of The Bullet 350 And ...
Aug 9, 2019 · Two variants of this bike have been introduced these are namely the Bullet 350X (kick-start) and the Bullet 350X ES (self-start).Missing: ongoing | Show results with:ongoing
[28]
[PDF] OWNER'S MANUAL - Honda
Always follow the proper starting procedure described below. Your motorcycle can be started with the transmission in gear by pulling in the clutch lever before ...
[29]
[PDF] OWNER'S MANUAL - Honda
cPull the hot start lever and kick-start the engine. u Do not open the throttle. dAs soon as the engine starts, release the hot start lever. Operation Guide.
[30]
How does KickMagic work?
A normal, healthy kick start rotates the crankshaft 720 degrees (two rotations). To the operator, this means that there are two torque spikes – the first one is ...Missing: revolutions per
[31]
RPM During Starter Cranking? - Club Sea Ray
Jul 2, 2021 · Various internet boating forums mention RPM values "required" between 250 and 350 RPM needed to fire it up.<|separator|>
[32]
Basic operation of a 4 stroke engine – Gill Sensors & Controls
1. Intake Stroke – The inlet valve is opened and the fuel/air mixture is drawn in as the piston travels down. · 2. Compression Stroke – The inlet valve is closed ...<|control11|><|separator|>
[33]
Kick starter for vehicle - US4934210A - Google Patents
Many types of vehicles kick starters for facilitate starting of the their internal combustion engines. Such kick starters normally include a crank arm or ...<|control11|><|separator|>
[34]
Kick start vs electric start: Complete comparison guide - ICICI Lombard
Mar 19, 2025 · Weight: Kick start bikes are lighter compared to electric start bikes as they do not have hefty batteries.Missing: cost | Show results with:cost<|control11|><|separator|>
[35]
Why Kick Start Motorcycles Still Hold a Place in Today's Riding Culture
Sep 19, 2025 · Another notable advantage of kick start motorcycles is their reliability. Electric start systems, while convenient, are vulnerable to battery ...Missing: dependency | Show results with:dependency
[36]
Electric Start Vs. Kick Start: A Comprehensive Comparison
Jun 27, 2023 · Kickstart systems are cheaper and simpler than electric start systems, as they do not require a battery or much wiring. However, they may ...
[37]
Kick Start vs Electric Start: Bike Starting Systems - HDFC Ergo
Sep 18, 2025 · Disadvantages of Electric Start: • Dependent on the bike's battery. • Slightly higher maintenance cost compared to kick start systems.Missing: weight | Show results with:weight
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Kickstarting A Motorcycle Can Be Dangerous - Here's How To Safely ...
Sep 8, 2025 · Standing on one foot while forcing the lever down can cause you to slip if the bike isn't on stable ground. A motorcycle tipping over mid- ...
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Addressing the Challenges Faced by Older Motorcycle Enthusiasts ...
May 15, 2024 · Aging brings natural physical changes that can impact motorcycle riding. Reduced strength, flexibility, vision, hearing, reflexes, and stamina are common as we ...
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Kick Start vs Electric Start - Which is Better? | Tata AIG Blog
Kick start uses a lever to ignite fuel, while electric start uses an electric motor. Electric starts are more user-friendly, but kick starts are more reliable ...
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2025 RM-Z450 - Suzuki Cycles
Engine starting is simple and efficient due to a long kickstart lever, well-matched internal gear ratios, a large air cleaner and breather system, plus an ...Overview · Features
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MXA RACE TEST: THE REAL TEST OF THE 2025 SUZUKI RM-Z450
Apr 29, 2025 · This is a kickstart lever and in 2025 it only exists on Suzuki motocross bikes. Q: WHY DOESN'T SUZUKI JUST ADD AN ELECTRIC STARTER? A ...
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Living With The 2025 Suzuki RM-Z450 (Part Two) - Keefer Tested
Aug 19, 2025 · Kickstart My Heart: Now this has been one of the most poked fun of things about the Suzuki 450. Does it suck to have to kickstart? Well, yeah it ...Missing: only | Show results with:only
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How to Kickstart 4 Stroke ATV (TRX450r + ANY Sport Quad)
Mar 7, 2022 · We Go over how to start a 4 stroke atv, quad, four wheeler that has Kickstart. We are starting a 2004 Honda trx450r, but this works for ...Missing: rural | Show results with:rural
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Is it worth putting a kick start on a 650L bike for off-road riding?
Jun 13, 2025 · I definitely recommend a kickstart for a back up if you ride in remote areas. If you really want to “upgrade” your bike, look for a 650 R ...Kick Starting Bikes and ATVs: Experiences and ChallengesReasonable used ATV for farm and hunting trips? - FacebookMore results from www.facebook.com
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Classic 350 Price, Colours & Mileage in USA | Royal Enfield
Buy a new Royal Enfield Classic 350 motorcycle at an attractive price starting from $4599 in USA. Explore mileage, colours, specs, features & other details.
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https://atvworldmag.com/how-to-install-a-honda-kick-start-kit/
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Bajaj Platina Price in India - BikeWale
There are 2 Platina models on offer with price starting from Rs. 66,053 (avg. Ex-showroom). The cheapest model under the series is Bajaj Platina 100 with 102cc ...
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25 Kick and Self Start Scooters in India with prices - BikeDekho
12 November 2025 - There are 25 Kick and Self Start Scooters in India with prices The Lowest Price is of TVS XL100 with ex showroom price of Rs 59800, ...
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Does the Honda Activa 125 FI have a kick start option in addition to ...
Yes, the Honda Activa 125 FI comes equipped with both a kick start and an electric start option. Other FAQs. What is the weight of the Honda ...
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https://www.bikewale.com/bajaj-bikes/platina/
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Lifan X-Pect | 200cc Dual Sport Motorcycle | Fuel ... - Amazon.com
Electric & Kick Start Options - Dual-start system ensures you're never stuck—just push a button or kick to go. High Fuel Economy (102 MPG) - Ride longer for ...
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https://www.carandbike.com/honda-bikes/activa-125-fi/faqs/does-the-honda-activa-125-fi-have-a-kick-start-option-in-addition-to-the-electric-start-14459
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How to Repair a Slipping Narrowcase Kick Start Lever
The rest of this page is an attempt to tell you how to convert a slipping kick-start lever by switching from the forked leaf spring to the bridged coil spring.
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Motorcycle Accidents and Slippery Roads - Daytona Beach, FL
Sep 19, 2020 · Slippery roads can easily throw a motorcycle off balance, and lack of traction makes it hard to stop, increasing the risk of loss of control.
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Burn injuries related to motorcycle exhaust pipes: a study in Greece
The study found 17 burns per 100,000 person-years, mostly in passengers, often below the knee. Wearing long pants and thermo shields could reduce risk.
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Motorcycles - Injury Facts - National Safety Council
Motorcycles were 3% of all registered vehicles, but accounted for 15.5% of all traffic fatalities and 3.4% of all injuries in 2023.
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Engine Decompression Systems - Motorcycle & Powersports News
Sep 24, 2014 · The decompressor system reduces cylinder compression at low rpm for easy starting. Decompressor systems are often used with single cylinder four-stroke engines.
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[PDF] YZ250F (E ) 2014
This manual explains operation, inspection, basic maintenance and tuning of your machine. If you have any questions about this manual or your machine, please ...
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Motorcycle Safety Foundation: MSF
SHARPEN YOUR SKILLS Practice Prep videos offer step-by-step guidance, while Quick Drills show quick demos you can easily play from your phone.Basic RiderCourse · 360 Motorcycle Rider Training · Online Learning · LibraryMissing: kick | Show results with:kick<|control11|><|separator|>