trim fan

[josh]

anyone ever try this i just seen it on affordablegokarts web site and thay say to try gapping plug at .045REDUCE DRAG: Behind the recoil starter is a plastic fan that helps cool the engine. Cutting every other blade off of this fan will reduce drag and help free up some power. This task can be accomplished with a good set of shears or a hacksaw blade in about 15 minutes. Cost: FREE :hack:

 

[minidragbike]

Yeah I have tried it, and it works
The diffeence is very small, but if you have a tach you will notice on top speed.
I gain about 140 more RPM doing this, that's about 1 mph over before.

The spark plug gaping work better with a billet flywheel. It gives you more spark engergy, which burns more air/fuel mxture.

 

[josh]

thanks,did the motor get hot at all after?

 

[Strigoi]

it will be fine since you're usually riding when it's running. you have to remember that these motors are designed to sit in one place when running at 3600rpm max.

 

[josh]

is this part of the pull start assm. and vary small like 1 in flat blades?

 

[Strigoi]

that's part of the pull start.

i attached a pic of a GX160/200 fan. what kind of motor are you doing this on?

 

[josh]

:doahk mine is steal its on a tec ohv 5h

 

[josh]

can it be done on this motor?

 

[Strigoi]

i wouldn't. MDB will know if it's a good idea to or not for sure.

just an FYI, everything on the AGK site is for Honda GX and clone motors.

 

[minidragbike]

Naw I wouldn't cut those fins
I have only cut the aluminum GX200 flywheel fins, and the plastic fan cover fins.

 

[george3]

You could un ballance the fly wheel and cause more problems. that wheel is ballanced with all the fins.