Anyone know what the correct belt size is needed with clutch distance?

webn237 · 08-18-2017, 08:04 AM

I was wondering if anyone knows how to calculate the belt size with the primary and secondary distances? The distance between center of each is 12".

Thanks

scottyb · 08-18-2017, 08:42 AM

On my big block build I discovered a method.
Use a cloth tape or mark a cloths-line cord when wrapped around the center shaft of the engine clutch and the outer most edge of the rear clutch and add 2 inches.

sho305 · 08-19-2017, 10:02 AM

In my build thread for a G9 with stock clutches at the time I said 2.5" between sheaves or a hair over. IIRC I cut a piece of wood that size and put between to check distance. That was using a stock G9 belt that is 39" OD I think. But if you have different clutch the diameter could change.

webn237 · 08-19-2017, 12:18 PM

I have a 780 comet clutch on the stock secondary clutch.

Sent from my SM-G935R4 using Tapatalk

08-18-2017, 08:04 AM	#1
webn237 Gone Wild Join Date: Aug 2012 Location: Monroe, Wisconsin Posts: 516	Anyone know what the correct belt size is needed with clutch distance? I was wondering if anyone knows how to calculate the belt size with the primary and secondary distances? The distance between center of each is 12". Thanks

08-18-2017, 08:42 AM	#2
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,406	Re: Anyone know what the correct belt size is needed with clutch distance? On my big block build I discovered a method. Use a cloth tape or mark a cloths-line cord when wrapped around the center shaft of the engine clutch and the outer most edge of the rear clutch and add 2 inches.

08-19-2017, 10:02 AM	#3
sho305 Vegas modded 420 Join Date: Jun 2009 Location: West MI Posts: 15,443	Re: Anyone know what the correct belt size is needed with clutch distance? In my build thread for a G9 with stock clutches at the time I said 2.5" between sheaves or a hair over. IIRC I cut a piece of wood that size and put between to check distance. That was using a stock G9 belt that is 39" OD I think. But if you have different clutch the diameter could change.

08-19-2017, 12:18 PM	#4
webn237 Gone Wild Join Date: Aug 2012 Location: Monroe, Wisconsin Posts: 516	Re: Anyone know what the correct belt size is needed with clutch distance? I have a 780 comet clutch on the stock secondary clutch. Sent from my SM-G935R4 using Tapatalk

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