The GL1200 'clunk'....


Information and questions on GL1200 Goldwings (1984-1987)
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ResDog70
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Joined: Thu Oct 18, 2012 4:40 pm
Location: Los Angeles, CA
Motorcycle: 1985 Aspencade

The GL1200 'clunk'....

Postby ResDog70 » Mon Dec 10, 2012 6:37 pm



So, I was out riding yesterday and became aware of a clunk sound made in 1st gear when taking off from a dead stop.

To be clear, this isn't the clunk heard when going into 1st gear, the bike is already in gear and as I would roll away, gear engaged, there would be an audible clunk heard as it passed 5 mph or so.

Reading up on this, it seems it's a very common sound. People just call it the "GL1200 clunk" and have tried inspecting splines, rear drives, u-joints, lubes Moly 60 and not, etc. etc. without any luck of anyone seeming to find out exactly what it is.

I thought I would turn to this forum, as this is where I go to when I need a REAL answer! :D

Does anyone know what this is, and should I be worried about it? Recommendations? Suggestions?

My 85 Aspy has less than 36K miles on it and the rear drive seems to be in great shape. I just need to know if this is rather normal or not.

Thanks!



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virgilmobile
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84 GL 1200 I

Re: The GL1200 'clunk'....

Postby virgilmobile » Tue Dec 11, 2012 9:42 am

In the engine,attached to the output shaft is a heavy buffer joint.Kinda like a coupler with a big spring.
If your engine is a bit out of sync,the usual off idle rattle MAY show up in that coupler.
Listen closely at the engine.It may be bucking a little at that rpm when you hear the clunk.
The second idea is that coupler has a bit of wear and the clunk is the settling in of it's parts as torque flows through it each time.
If it is this,the only way to fix it is to replace the coupler and sync the engine.Or live with it.

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virgilmobile
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Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: The GL1200 'clunk'....

Postby virgilmobile » Tue Dec 11, 2012 1:42 pm

Oh,by the way,here's the pix of it.

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ResDog70
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Joined: Thu Oct 18, 2012 4:40 pm
Location: Los Angeles, CA
Motorcycle: 1985 Aspencade

Re: The GL1200 'clunk'....

Postby ResDog70 » Tue Dec 11, 2012 4:13 pm

!!!.... and that is why I LOVE THIS FORUM!!

Thank you Virgilmobile!!

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virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: The GL1200 'clunk'....

Postby virgilmobile » Wed Dec 12, 2012 9:26 am

Take note....this is just my thought.Mine doesn't do this and it looks like you've eliminated everything else.
That's why I'm leaning toward a wear spot in the torque dampener.
It may be like a worn CV joint when you hear them clunking.

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WingAdmin
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Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
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1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: The GL1200 'clunk'....

Postby WingAdmin » Thu Dec 13, 2012 4:52 pm

If it's coming from nearer the back end, it could be the dampeners in the rear wheel, I suppose.




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