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-   -   C4.1 Gearing on a 7.5 (http://www.oople.com/forums/showthread.php?t=100310)

paulc 04-05-2012 05:17 PM

C4.1 Gearing on a 7.5
 
As title gearing for a 7.5 please

gazhillAE 04-05-2012 06:05 PM

78
24

:thumbsup:

paulc 04-05-2012 06:20 PM

Cheers is a 78t standard size what comes with the b4 i don't have the kit yet !

oddski77 04-05-2012 09:12 PM

Quote:

Originally Posted by paulc (Post 651470)
Cheers is a 78t standard size what comes with the b4 i don't have the kit yet !

The kit come with 81 spur. 78/24 = 81/25. Check http://www.gearchart.com/index.cfm?f...n=chart.create for a full chart plot. Aint 8,45 final output a bit low? Eg Novak rec a output at 9,5 for a 7.5T(2wd buggy).

Richard Lowe 04-05-2012 09:14 PM

It depends a lot on the brand of motor, with the kit 81t spur I'd start on about a 23t pinion (on the small side for a 7.5) and go from there :)

tyreman 04-05-2012 10:06 PM

I've got my speed passion 7.5v3 on 75/27.

chuckie stella 04-05-2012 10:31 PM

Quote:

Originally Posted by tyreman (Post 651548)
I've got my speed passion 7.5v3 on 75/27.

You're an animal though!! :woot:

Reedy - 78/23

paulc 04-05-2012 10:31 PM

I'll be using speed passion motors aswell looks like spur gears and pinions on the shopping list !

oddski77 05-05-2012 08:59 AM

What do you achieve by using a smaller(or bigger) spur, exept from a wider range to use a handful of pinions?

chuckie stella 05-05-2012 07:01 PM

Quote:

Originally Posted by oddski77 (Post 651621)
What do you achieve by using a smaller(or bigger) spur, exept from a wider range to use a handful of pinions?

Weight distribution on my B4.1


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