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Unread 03-11-2013, 08:29 AM   #1
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Yamaha
 
Join Date: Oct 2010
Location: Central New York
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Default GP 396 swap complete more questions

I finally got the engine to run really well. The carbs on the old Yamaha motor are a bit querky but I finally got it. Now it seems like the motor is coming up to where it should be running RPM wise. I dont have a tach but it sounds like its about peaked out. The cart doesnt seem to be going as fast as it should. It will spin the tires when going slow but it seems that the top end isnt there. I think the Yamaha stock rear end shifts right ? I am using the belt that came with the motor. Could the belt be too wide. Not really experianced at the drive train and clutching part of this build. Any suggestions? What size belt ( width ) should I be using? Maybe the primary clutch needs to turn on earlier? Is that a softer spring issue?
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Unread 06-27-2013, 08:38 PM   #2
Getting Wild
E-Z-GO
 
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Default Re: GP 396 swap complete more questions

I am in the same boat right now.i got a Yamaha in mine an I notice the belt I used is a tad bit to wide..so I'm trying to find the right width. I think it's gonna be something like 47" long and 1.125 wide..just can't find it.
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Unread 04-06-2014, 11:07 AM   #3
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Default Re: GP 396 swap complete more questions

Ideally your engine shud hit max rpm b4 the 2ndary clutch begins to shift. Say around 7500 rpm or so. It should stay at that rpm for the rest of the time you are accelerating to max speed. That shift rpm is mostly controlled by the tension on the 2ndary spring. More tension equals higher shift rpm and vice versa. Clutching is not an easy game to master. U need to know the max rpm horse power and torque curve in order to dial in clutches effectively. Where the torque and hp curve meet + a couple hundred rpm is the exact spot u want to begin your 2ndary clutch shift. If you don't have that info to work from 1st its almost impossible to get really good results.
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Unread 10-20-2014, 12:49 PM   #4
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Default Re: GP 396 swap complete more questions

thanks!!!!
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