I have a predator 224 with a billet rod and flat top piston with a mod 2 cam, ported head, 24mm nibbi slide carb, 22lb springs . Right now if I have the engine disconnected from the drive train system it will hit its max rpm nicely to 7k. With my 30 series torque from Amazon it gets to mabey 5k I believe this is my issue so I have a jurrganuat on the way but I was unsure if my gear ratio could be another issue and currently it's a 10 tooth to a 10 tooth jack shaft to a 60 tooth axel sprocket on 21x8 size tires. New to this hobby and want some information for people with experience.
Predator 224 + torque converter advice (mini bike)
- Thread starter klad
- Start date
Denny
Canned Monster
Sounds normal to me. You wasted your money on the jaggeroff though. 5k is a respectable rpm.
Hellion
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The torque converter imparts a bit more parasitic drag on the engine compared to a centrifugal clutch and chain. I’m with Denny, 5K is respectable.
Of course you can rev the snot out of an engine with it disconnected from the drive train, but stop doing that. That’s a good way to impart excess wear and tear or wreck it, with revs it could never reach with the rubber on the road (unless you do more mods). Always have a load on it
This is a good speed calculator but it’s just theoretical speed:
www.gokartguide.com
Be sure to enable the jackshaft function and plug in your numbers.
Of course you can rev the snot out of an engine with it disconnected from the drive train, but stop doing that. That’s a good way to impart excess wear and tear or wreck it, with revs it could never reach with the rubber on the road (unless you do more mods). Always have a load on it
This is a good speed calculator but it’s just theoretical speed:
Go-Kart Gear Ratio Chart and Speed Calculator | GoKartGuide
However, finding the optimal gear ratio may not always be that easy and you’ll definitely need some tools. To help you with that, I’ve created a go-kart gear
www.gokartguide.com
Be sure to enable the jackshaft function and plug in your numbers.
Whitetrashrocker
Inmate #952016
How are you measuring the rpm?
Denny
Canned Monster
A white mark on the clutch and a stopwatch to time out a minute.
Denny
Canned Monster
You won’t cook your CVT. How old are you 14? Please be reasonable man.