cart shuttering

gazc · 10-09-2018, 07:48 PM

HI Guys my Yamaha G9 1992 golf carts shutters when going up the ramps on my trailer, if i back off and get a run up it's ok, there seems to be a lot of slack on the drive belt, but when i looked, belt seems in good order stamped on belt J55-G6241-00, 1 1/8 wide checked rear pulley their is a little play same on front clutch pulley.
any advise would be much appreciated.
Cheers Gazza

Shepard · 10-09-2018, 08:49 PM

Welcome to BGW -- yes your belt should be 1-3/16" wide.

TheNewGuy · 10-10-2018, 05:24 AM

You should have approximately 1-1/2" deflection on the belt when you push down on it. If more, tighten the belt or replace.

BBBHC · 10-10-2018, 08:07 AM

If you don't notice this condition under normal ride conditions, it could also be what is referred to as axle wrap. In the situation you are experiencing, the shutter, you are under more torque than normal. If your leaf springs are worn/tired, they will have more of a tendency to flex under higher torque, causing a sensation of shuttering.

May or may not be the case in your situation, but worth taking a look at.

raydhd · 10-10-2018, 03:16 PM

Yamahas have coil springs mounted to the engine cradle itself.

gazc · 10-10-2018, 10:48 PM

Thanks yes i thought of tightening the belt but there doesn't appear to be anywhere to tighten, have looked no tension bearing, nothing between both pulleys motor and diff both mounted to chassie

gazc · 10-10-2018, 10:58 PM

checked coil springs, deflection on belt 2 1/2 inches, cart goes like the clappers under normal conditions just when loading, perhaps the ramps may be a little steep?

gazc · 10-11-2018, 08:39 PM

Thanks Guys for your information will look at extending ramp thanks anyway,
Cheers Gazc

TheNewGuy · 10-12-2018, 07:40 AM

Someone may have installed the wrong belt, that is too loose. With the belt worn to 1-1/8" maybe time to replace anyway. I would also check for broken engine mounts, this would allow the engine to move rearward.

sho305 · 10-13-2018, 03:20 PM

I would guess its the belt or primary clutch issue, unless you mean the engine is running strangely.

10-09-2018, 07:48 PM	#1
gazc Not Yet Wild Join Date: Jun 2017 Posts: 8	cart shuttering HI Guys my Yamaha G9 1992 golf carts shutters when going up the ramps on my trailer, if i back off and get a run up it's ok, there seems to be a lot of slack on the drive belt, but when i looked, belt seems in good order stamped on belt J55-G6241-00, 1 1/8 wide checked rear pulley their is a little play same on front clutch pulley. any advise would be much appreciated. Cheers Gazza
gazc Not Yet Wild Join Date: Jun 2017 Posts: 8

10-09-2018, 08:49 PM	#2
Shepard Crazy Ole Man Join Date: Jan 2016 Location: Owego NY Posts: 2,758	Re: cart shuttering Welcome to BGW -- yes your belt should be 1-3/16" wide.

10-10-2018, 05:24 AM	#3
TheNewGuy Admin/Moderator Join Date: Dec 2006 Location: Ohio Posts: 18,046	Re: cart shuttering You should have approximately 1-1/2" deflection on the belt when you push down on it. If more, tighten the belt or replace.
	Ron PLEASE VISIT Our Sponsors * BGW GEAR The Store The G2 Project * Swing Arm Drop & Repair * Geep1 Project

10-10-2018, 08:07 AM	#4
BBBHC Gone Wild Join Date: Jul 2018 Location: Central Ohio Posts: 1,720	Re: cart shuttering If you don't notice this condition under normal ride conditions, it could also be what is referred to as axle wrap. In the situation you are experiencing, the shutter, you are under more torque than normal. If your leaf springs are worn/tired, they will have more of a tendency to flex under higher torque, causing a sensation of shuttering. May or may not be the case in your situation, but worth taking a look at.

10-10-2018, 03:16 PM	#5
raydhd VC 460 CLONE GONE WILD Join Date: Oct 2014 Location: Ray BY The Bay NJ Posts: 10,633	Re: cart shuttering Yamahas have coil springs mounted to the engine cradle itself.

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10-10-2018, 10:48 PM	#6
gazc Not Yet Wild Join Date: Jun 2017 Posts: 8	Re: cart shuttering Thanks yes i thought of tightening the belt but there doesn't appear to be anywhere to tighten, have looked no tension bearing, nothing between both pulleys motor and diff both mounted to chassie
gazc Not Yet Wild Join Date: Jun 2017 Posts: 8

10-10-2018, 10:58 PM	#7
gazc Not Yet Wild Join Date: Jun 2017 Posts: 8	Re: cart shuttering checked coil springs, deflection on belt 2 1/2 inches, cart goes like the clappers under normal conditions just when loading, perhaps the ramps may be a little steep?
gazc Not Yet Wild Join Date: Jun 2017 Posts: 8

10-11-2018, 08:39 PM	#8
gazc Not Yet Wild Join Date: Jun 2017 Posts: 8	Re: cart shuttering Thanks Guys for your information will look at extending ramp thanks anyway, Cheers Gazc
gazc Not Yet Wild Join Date: Jun 2017 Posts: 8

10-12-2018, 07:40 AM	#9
TheNewGuy Admin/Moderator Join Date: Dec 2006 Location: Ohio Posts: 18,046	Re: cart shuttering Someone may have installed the wrong belt, that is too loose. With the belt worn to 1-1/8" maybe time to replace anyway. I would also check for broken engine mounts, this would allow the engine to move rearward.
	Ron PLEASE VISIT Our Sponsors * BGW GEAR The Store The G2 Project * Swing Arm Drop & Repair * Geep1 Project

10-13-2018, 03:20 PM	#10
sho305 Vegas modded 420 Join Date: Jun 2009 Location: West MI Posts: 15,443	Re: cart shuttering I would guess its the belt or primary clutch issue, unless you mean the engine is running strangely.

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