{"id":79681,"date":"2026-06-15T16:36:27","date_gmt":"2026-06-15T08:36:27","guid":{"rendered":"https:\/\/www.motomaxsfr.com\/?p=79681"},"modified":"2026-06-15T16:36:32","modified_gmt":"2026-06-15T08:36:32","slug":"420-chain-vs-35-chain-why-bigger-isnt-always-best","status":"publish","type":"post","link":"https:\/\/www.motomaxsfr.com\/es\/420-chain-vs-35-chain-why-bigger-isnt-always-best\/","title":{"rendered":"420 Chain vs 35 Chain: Why Bigger Isn\u2019t Always Best"},"content":{"rendered":"
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420 chain and 35 chain: give you the answer directly
The pitch of the 35 chain is 3\/8 inch, which is specially designed for engines with less than 8 horsepower. The pitch of the 420 chain is 1\/2 inch, which can carry high torque conditions up to 20 horsepower. Many mini bike (mini bike) and kart modification players have a fatal misunderstanding. They always feel that the thicker and heavier the chain is upgraded, the better the performance will be. To be honest, if you use the original factory or a small displacement engine that has only been slightly modified, and blindly replace it with a heavy 420 chain, you will only eat 3% to 5% of your wheel horsepower for nothing. Which chain will make your car run faster? We have to look at the 3 hard-core dimensions of rotating mass, tooth plate ground clearance and ultimate pull.<\/p>\n\n\n\n

\u201cCPR\u201d chain selection framework
Don\u2019t buy chains and discs all by feeling. The cost of buying wrong specifications leading to tooth breakage and chain breakage is not only costly but also delayed. Directly apply this CPR selection framework (Clearance ground clearance, Power Delivery power output, Rotational Mass rotation quality), which is only used by actual combat experts, to accurately match your frame.<\/p>\n\n\n\n

Ground Clearance (Clearance): The \u201cDrag Bottom\u201d Trap of Blind Escalation
To maintain exactly the same tooth ratio, the 420 chain must be equipped with a much larger back tooth plate, which is the big pit that many DIY players step. A 60-tooth 35-chain disc with a diameter of about 7.2 inches; However, if it is a 60-tooth 420 disc, the diameter will directly soar to more than 9.7 inches. If you tuck this nearly 10-inch iron disc into a go-kart with only 10-inch or 11-inch rear wheels, the ground clearance is not even 1 inch. As long as you bend a little harder, or run on bumpy mud, the tooth plate will be scraped directly and bent and scrapped instantly.<\/p>\n\n\n\n

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Power output (Power Delivery): exaggerated \u201cbroken chain\u201d anxiety.
The tensile strength determines the critical point at which the chain is abruptly torn during violent acceleration. The standard 35 chain can withstand about 2100 pounds of tension, while the 420 chain is about 3800 pounds. Many people think that the 35 chain is easy to break. In fact, a Predator 212cc engine changed to 12 horsepower cannot produce enough instantaneous torque to break the high-quality 35 chain. 99% of the broken chains on small displacement machines are due to misalignment of the front and rear discs or lack of oil, which has nothing to do with the tensile strength of the metal. Changing the 420 chain is just covering up the installation tolerances of your transmission system.<\/p>\n\n\n\n

Spinning Mass (Rotational Mass): The invisible killer who ate the power
The heavier the transmission piece, the lower your speed, and the more meat the acceleration. The side plates of the 420 chain are thicker, the rollers are wider, and the pin shaft is thicker. The overall physical weight is 40% heavier than that of the 35 chain. Your engine must first consume kinetic energy to turn this heavy lump of metal before it can pass the rest of the power to the rear wheels. In this core 35 chain vs 420 contest, 35 chains are reserved for 6.5 horsepower machines, which can make the engine speed climb without resistance, and the starting acceleration of 0-30 mph is absolutely shorter.<\/p>\n\n\n\n

Hard core data: 35 chain and 420 chain parameter disassembly
Look at the data and don\u2019t listen to the marketing. Spread out the physical specifications thoroughly, and you\u2019ll see why a 420 chain requires a completely different set of clutches and hardware.<\/p>\n\n\n\n

Par\u00e1metro<\/td>#35 Chain<\/td>#420 Chain<\/td><\/tr>
Pitch<\/strong><\/td>3\/8\u2033 (0.375\u2033)<\/td>1\/2\u2033 (0.500\u2033)<\/td><\/tr>
Di\u00e1metro del rodillo<\/strong><\/td>0.200\u2033<\/td>0.313\u2033<\/td><\/tr>
Anchura del rodillo<\/strong><\/td>3\/16\u2033<\/td>1\/4\u2033<\/td><\/tr>
Resistencia a la tracci\u00f3n<\/strong><\/td>~2,100 lbs<\/td>~3,800 lbs<\/td><\/tr>
Weight per 100 Links<\/strong><\/td>1.10 lbs<\/td>1.63 lbs<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Misalignment in pitch (3\/8 inch versus 1\/2 inch) is fatal. This means that you must not force the 35 chain to hang on the clutch, torque converter or rear tooth plate of the 420. If the tooth pitch is not matched, it will instantly jam and destroy the entire drive shaft.<\/p>\n\n\n\n

Actual combat test case: Predator 212cc horsepower machine and acceleration performance
In order to break the mystery of the blind guess in the forum, we directly pulled the data with a horsepower machine and a speedometer on a 150-pound mini motorcycle rack. The engine uses a Predator 212cc (about 8.5 horsepower) modified in the 1 stage. Both sets of transmissions use a 12-tooth centrifugal clutch and a 60-tooth rear tooth disc to ensure that the gear ratio of 5:1 is completely consistent.<\/p>\n\n\n\n