when i drive off on my 1200 goldwing it makes a clunk noise


Information and questions on GL1200 Goldwings (1984-1987)
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dickturpin
Posts: 7
Joined: Sat May 31, 2014 6:35 am
Location: London, England, United Kingdom
Motorcycle: 1200cc interstate
date reg in uk 05/02/1996
A434LLN

when i drive off on my 1200 goldwing it makes a clunk noise

Postby dickturpin » Sat Aug 02, 2014 7:20 pm



hi when i put my 1200cc in gear it always clunks and when i pull away to please can you help me



rainbrodash
Posts: 3
Joined: Mon Aug 04, 2014 4:45 pm
Location: Steinbach
Motorcycle: 1984 GL1200 Aspencade
1984 CB750 Nighthawk
1978 kz400 inabox
1976 kz400 out of frame

Re: when i drive off on my 1200 goldwing it makes a clunk no

Postby rainbrodash » Mon Aug 04, 2014 4:50 pm

Does it clunk throughout each gear?
How long have you owned the machine?
Try taking off in 2nd gear with a smooth clutch release, for all we know it can be a gear lash issue which if anything like helicopters may require some shims installed on your hypoid gear in your diff.

EDIT: i read through a haynes manual, and its got some dampeners that may be the source. I'd share the image but adobe is being difficult. There are 6 of them and they should match the bolt pattern for your brake discs, they look like rubberized bushings with steel inserts (the picture isn't the best but that is what it looks like) It goes on to say that if they are worn that you should change the wheel.
I dunno it's still a new bike to me still only used to working on my 84 nighthawk

dickturpin
Posts: 7
Joined: Sat May 31, 2014 6:35 am
Location: London, England, United Kingdom
Motorcycle: 1200cc interstate
date reg in uk 05/02/1996
A434LLN

Re: when i drive off on my 1200 goldwing it makes a clunk no

Postby dickturpin » Mon Aug 04, 2014 6:42 pm

HI IT ONLY CLUNK WHEN I PUT INTO GEAR AND WHEN I RELEASE THE CLUTCH TO DRIVE OFF

rainbrodash
Posts: 3
Joined: Mon Aug 04, 2014 4:45 pm
Location: Steinbach
Motorcycle: 1984 GL1200 Aspencade
1984 CB750 Nighthawk
1978 kz400 inabox
1976 kz400 out of frame

Re: when i drive off on my 1200 goldwing it makes a clunk no

Postby rainbrodash » Tue Aug 05, 2014 12:11 pm

plenty bikes that i ride clunk into gear, for the take off not so much. try taking off in 2nd gear slowly, could be 1st is done or it could be the dampeners in your rear wheel

dickturpin
Posts: 7
Joined: Sat May 31, 2014 6:35 am
Location: London, England, United Kingdom
Motorcycle: 1200cc interstate
date reg in uk 05/02/1996
A434LLN

Re: when i drive off on my 1200 goldwing it makes a clunk no

Postby dickturpin » Tue Aug 05, 2014 6:11 pm

thanks for your reply i will see if it is what you say .

Old Fogey
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Location: Glasgow Scotland
Motorcycle: 1976 GL1000
1979 GL1000
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Re: when i drive off on my 1200 goldwing it makes a clunk no

Postby Old Fogey » Thu Aug 07, 2014 6:33 am

dickturpin wrote:HI IT ONLY CLUNK WHEN I PUT INTO GEAR AND WHEN I RELEASE THE CLUTCH TO DRIVE OFF


This is known as 'the half turn clunk' and it comes from the cam type shock absorber in the output shaft loading and unloading. All the four cylinder engines have the same style of shaft and can suffer the same problem. It's caused either by wear in the cam sections or more usually the spring getting weak. Although annoying, it's not often a major problem; just means you need to take off a bit more gently.
Not easy to find new parts and the spring is difficult to compress without the correct tool.
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HawkeyeGL1200
Posts: 918
Joined: Sat Jul 05, 2014 11:53 am
Location: Courtland, Va.
Motorcycle: 1984 GL1200 Interstate
1981 GL1100 Interstate

Re: when i drive off on my 1200 goldwing it makes a clunk no

Postby HawkeyeGL1200 » Thu Aug 07, 2014 11:06 am

Old Fogey wrote:This is known as 'the half turn clunk' and it comes from the cam type shock absorber in the output shaft loading and unloading. All the four cylinder engines have the same style of shaft and can suffer the same problem. It's caused either by wear in the cam sections or more usually the spring getting weak. Although annoying, it's not often a major problem; just means you need to take off a bit more gently.
Not easy to find new parts and the spring is difficult to compress without the correct tool.

My 1200 does it too if I take off kind of fast in low gear. Never noticed it in any other gear. I figured it was something that I'd find sooner or later if I took enough stuff apart on the machine. Good to know the source of the clunk :-) Thanks!
I am wrong as often as I am right concerning what is wrong with someone else' motorcycle without having seen the machine in person. Guessing with limited information, as to the source of the trouble, is sketchy at best.

rainbrodash
Posts: 3
Joined: Mon Aug 04, 2014 4:45 pm
Location: Steinbach
Motorcycle: 1984 GL1200 Aspencade
1984 CB750 Nighthawk
1978 kz400 inabox
1976 kz400 out of frame

Re: when i drive off on my 1200 goldwing it makes a clunk no

Postby rainbrodash » Thu Aug 07, 2014 11:50 am

So if this is a common thing are there any mods?

63spyder
Posts: 9
Joined: Wed Jun 04, 2014 10:27 pm
Location: Glide oregon
Motorcycle: 1986 goldwing aspencade

Re: when i drive off on my 1200 goldwing it makes a clunk no

Postby 63spyder » Sun Aug 17, 2014 9:04 am

Hi, I've just gone though the same problem. It ended up being the drive shaft spline towards the ring and pinion side, the spline was almost worn off. I ended up replacing the driveshaft and the ring and pinion as a unit because it seems that the cup the spline slides into is sold with the r/pinion. Not only did I get rid of the clunk but also the unit was causing a high pitched whine and a slight vibration. Much happier now. ( 1986 aspencade )




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