When should I upgrade my TC?

[Filipe]

Hi guys,

I'm looking to buy a new go kart. Possibly a Manco Rattler LXT (A bit bigger than my previous cart, a Dingo). It comes stock with a 6hp motor and a TC (which brand I am not certain of). Let's assume it's a Comet 30 series. What's the max (logical) size motor I can run on it before having to upgrade my TC to say, a 40 series? Point being that I want a bigger motor, minus the bigger expenses.


Thanks guys.

 

[OzFab]

A Comet 30 is usually only safe to use up to about 8hp but, once you get there, you'll have to go up anyway as the engine shaft will be larger

 

[Filipe]

So anything 8 or over is a 40? Do they even make 7hp motors? 7.5? I know there are some rattlers with 6.5s

 

[r_chez_08]

Yeh they make 7hp motors. Never actually seen a 7.5.
You may be OK up to 10hp if you take it easy
However, they have larger shaft sizes which would warrant a new driver anyway.
I would safely reccomend an 8hp motor with 3/4" shaft as the top.

 

[Filipe]

OK. I'd probably have a hard time finding a 10hp with a 3/4 anyway.

You got it ^^ I don't want to have to upgrade the tc. Just the motor. I wasn't aware that they even made 8hp with 3/4 shafts. I guess i should start looking..