I just want to hear some experiences with high gear ratio and the other factors that go into play along with them such as:
Weight of mini-bike (or go kart) and operator combined.
Gear ratio.
Size of tires.
estimated top speed
estimated time to get to top speed.
`My personal experienced highest gear ratio so far was on a gokart ,total weight with me on it estimated 220(its very light), and i'm not 100% of the top speed but it was a 4:1 ratio and i'm fairly certain it goes 45mph+ in about 4.5-ish until it slows to a crawl due to the stock cam and 1WD.
`I'm waiting for a live axle to lay down more traction for the .290 cam @ 104lsa and will re-try it cause all it does is spin the tire and slow down acceleration.
``oh..i will be experimenting with 3:1 ratio very soon with a torque converter and custom machined sprocket. I've done 4:1 with a clutch(though it does get hot quick) so i'm more than certain it can be done with a torque converter. 4:1 ratio i haven't had any problems with except at high rpm(meaning 5000+ rpm estimated ) or excessive full throttle acceleration the belt starts to slip. My goal speed will only be around 5k rpm max due to that reason.
So how about you guys using high performance clutches? Do they help get you more RPM and torque at all?
i want to hear if anyone else has tried really high gear ratios and their experience.
i think this topic is something we can all learn from.
\/48 tooth on my drive wheel and 12 tooth Torque converter sprocket\/

Weight of mini-bike (or go kart) and operator combined.
Gear ratio.
Size of tires.
estimated top speed
estimated time to get to top speed.
`My personal experienced highest gear ratio so far was on a gokart ,total weight with me on it estimated 220(its very light), and i'm not 100% of the top speed but it was a 4:1 ratio and i'm fairly certain it goes 45mph+ in about 4.5-ish until it slows to a crawl due to the stock cam and 1WD.
`I'm waiting for a live axle to lay down more traction for the .290 cam @ 104lsa and will re-try it cause all it does is spin the tire and slow down acceleration.
``oh..i will be experimenting with 3:1 ratio very soon with a torque converter and custom machined sprocket. I've done 4:1 with a clutch(though it does get hot quick) so i'm more than certain it can be done with a torque converter. 4:1 ratio i haven't had any problems with except at high rpm(meaning 5000+ rpm estimated ) or excessive full throttle acceleration the belt starts to slip. My goal speed will only be around 5k rpm max due to that reason.
So how about you guys using high performance clutches? Do they help get you more RPM and torque at all?
i want to hear if anyone else has tried really high gear ratios and their experience.
i think this topic is something we can all learn from.
\/48 tooth on my drive wheel and 12 tooth Torque converter sprocket\/


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