1980 G1 vibration

charles g · 08-10-2009, 03:22 PM

Hi all

I have a 1980 G1. when I accelerate at high speed there is a strong vibration that shakes the whole cart. I jacked the rear wheels off of the ground and also tried it. When I accelerate with the wheels off the ground I get the same thing, a strong vibration. This happens at about 1/2 to 3/4 throttle. I watched the two pully's and they don't appear to be out of round. Can someone please give me an idea as to what might be causing this. Thanks.

Charles G

spriddle · 08-10-2009, 03:26 PM

First guess would be a broken weight/roller/something in the drive clutch.

charles g · 08-11-2009, 07:00 PM

Thanks Spriddle

I checked the inside of the clutch and nothing was broken. The roller pins are worn so I turned them over and greased them. This seemed to take alot of the vibration out. Would a rebuild probably take care of the rest? I also noticed one of the plastic shoe ramps on the secondary sheave was missing. Could this also cause a problem? Thanks again for the advice on this forum. You all really know your carts.

Charles G

spriddle · 08-12-2009, 06:56 AM

You'll need to replace the ramp shoes but that shouldn't cause it to vibrate. Jack the rear of the cart up for safety (use safety stands) and run the engine with the drive train engaged. See if the rear clutch seems to be out of round (the inner sheave). If so, the bushing in the inner sheave is probably damaged due to not being greased regularly. And it does sounds like you may need to rebuild or replace the drive clutch.

dock98 · 08-12-2009, 07:07 AM

welcome to BGW.charles g.http://www.buggiesgonewild.com/introductions/

mike24yamaha · 08-14-2009, 07:20 PM

Did you check your motor mounts?? can you move your motor around? There made of rubber and fall apart over time. mine did anyway.

charles g · 08-16-2009, 09:38 PM

Thanks for the advice. I checked the motor mounts and found that one of the front ones has a large crack in the rubber. How stiff should the rubber be? This one feels kind of lose. Are there suppose to be four rubber mounted mounts? On the rear two mounts there's just two blocks of hard plastic and that is all that is between the engine mount and the frame.

Thanks again for all of the help.
Charles G.

charles g · 08-20-2009, 07:53 PM

I just put 2 new motor mounts on the rear, and man what a difference, no more vibration. Now it's on to new king pin and bushings. Any tips or tricks? Again, thanks for the help.

Charles G

mike24yamaha · 08-20-2009, 09:05 PM

I knew it was the motor mounts. Mine vibrated like crazy and found the motor mounts cracked. i could move the motor around with my hand

glad to see it worked for ya

08-10-2009, 03:22 PM	#1
charles g Not Yet Wild Join Date: Aug 2009 Posts: 11	1980 G1 vibration Hi all I have a 1980 G1. when I accelerate at high speed there is a strong vibration that shakes the whole cart. I jacked the rear wheels off of the ground and also tried it. When I accelerate with the wheels off the ground I get the same thing, a strong vibration. This happens at about 1/2 to 3/4 throttle. I watched the two pully's and they don't appear to be out of round. Can someone please give me an idea as to what might be causing this. Thanks. Charles G
charles g Not Yet Wild Join Date: Aug 2009 Posts: 11

08-10-2009, 03:26 PM	#2
spriddle Admin Join Date: Dec 2006 Location: TN Posts: 101,856	Re: 1980 G1 vibration First guess would be a broken weight/roller/something in the drive clutch.

08-11-2009, 07:00 PM	#3
charles g Not Yet Wild Join Date: Aug 2009 Posts: 11	Re: 1980 G1 vibration Thanks Spriddle I checked the inside of the clutch and nothing was broken. The roller pins are worn so I turned them over and greased them. This seemed to take alot of the vibration out. Would a rebuild probably take care of the rest? I also noticed one of the plastic shoe ramps on the secondary sheave was missing. Could this also cause a problem? Thanks again for the advice on this forum. You all really know your carts. Charles G
charles g Not Yet Wild Join Date: Aug 2009 Posts: 11

08-12-2009, 06:56 AM	#4
spriddle Admin Join Date: Dec 2006 Location: TN Posts: 101,856	Re: 1980 G1 vibration You'll need to replace the ramp shoes but that shouldn't cause it to vibrate. Jack the rear of the cart up for safety (use safety stands) and run the engine with the drive train engaged. See if the rear clutch seems to be out of round (the inner sheave). If so, the bushing in the inner sheave is probably damaged due to not being greased regularly. And it does sounds like you may need to rebuild or replace the drive clutch.

08-12-2009, 07:07 AM	#5
dock98 doin it in the desert Join Date: Dec 2008 Location: Sonora Desert,Az Posts: 5,603	Re: 1980 G1 vibration welcome to BGW.charles g.http://www.buggiesgonewild.com/introductions/

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08-14-2009, 07:20 PM	#6
mike24yamaha Not Yet Wild Join Date: Jun 2009 Location: Michigan Posts: 20	Re: 1980 G1 vibration Did you check your motor mounts?? can you move your motor around? There made of rubber and fall apart over time. mine did anyway.

08-16-2009, 09:38 PM	#7
charles g Not Yet Wild Join Date: Aug 2009 Posts: 11	Re: 1980 G1 vibration Thanks for the advice. I checked the motor mounts and found that one of the front ones has a large crack in the rubber. How stiff should the rubber be? This one feels kind of lose. Are there suppose to be four rubber mounted mounts? On the rear two mounts there's just two blocks of hard plastic and that is all that is between the engine mount and the frame. Thanks again for all of the help. Charles G.
charles g Not Yet Wild Join Date: Aug 2009 Posts: 11

08-20-2009, 07:53 PM	#8
charles g Not Yet Wild Join Date: Aug 2009 Posts: 11	Re: 1980 G1 vibration I just put 2 new motor mounts on the rear, and man what a difference, no more vibration. Now it's on to new king pin and bushings. Any tips or tricks? Again, thanks for the help. Charles G
charles g Not Yet Wild Join Date: Aug 2009 Posts: 11

08-20-2009, 09:05 PM	#9
mike24yamaha Not Yet Wild Join Date: Jun 2009 Location: Michigan Posts: 20	Re: 1980 G1 vibration I knew it was the motor mounts. Mine vibrated like crazy and found the motor mounts cracked. i could move the motor around with my hand glad to see it worked for ya

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