30 series 7" driven Pulley

[NJOHC]

Hey guys,
Are these better overall than the 6 inch? I want some more bottom end and some more top end. Will the 7 inch driven unit provide this?

http://www.gokartsupply.com/asymapp.htm

 

[Raywelder]

I think that a larger pulley would give you better low end, But the top end would be about the same, For the top end to change I would think you would get a bigger driven clutch.

 

[mattgr]

the 7in driven will give you better bottom end and the 6in will give you more high end, cant have both.

 

[NJOHC]

Ok thanks. I guess Ill try it and see what it does. I was just looking for something a little different that will transfer power a little better. It would have a manual trans if they sold one that fits these engines! lol

 

[NJOHC]

The reason I asked was because the info on that site sort of controdicts itself.

Using The 6" Driven
High Speed .90
Low Speed 2.68
Overall Speed Ratio 2.98

Using The 7" Driven
High Speed 1.12
Low Speed 3.13
Overall Speed Ratio 2.79

Its saying that I will gain in low speed and loose high speed, but at the very bottom it says I gain overall. Im still not sure what it means because the way I look at it, its saying Ill be getting more top and bottom end if I use the 7''. Can someone explain please? Im still new to this whole thing.