Noisy transmission


Information and questions on GL1500 Goldwings (1988-2000)
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CaNorseman
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Location: Modesto,Ca
Motorcycle: 1991 GL1500 Aspencade, 1976 GL1000 (for sale) 81 cx500d(sold), 75 cb400f(sold), 1971 SL175(sold)

Noisy transmission

Postby CaNorseman » Wed Jul 13, 2016 1:31 pm



I changed the oil and filter on my 91 aspencade prior to a long trip. I used Mobil 1 10-40 Synthetic for motorcycles. I am hearing more Drive train howl. Heard most at 70-85 mph.The noise stays the same pitch in 4th and 5th gear but disappears if I engage the clutch. Any Idea what is going on?



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CaNorseman
Posts: 59
Joined: Thu Oct 22, 2015 10:23 pm
Location: Modesto,Ca
Motorcycle: 1991 GL1500 Aspencade, 1976 GL1000 (for sale) 81 cx500d(sold), 75 cb400f(sold), 1971 SL175(sold)

Re: Noisy transmission

Postby CaNorseman » Wed Jul 13, 2016 2:12 pm

I think I found a similar thread . Altennator dampers will be a great place to start. everything rubber on this has decayed

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Bluewaterhooker0
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Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: Noisy transmission

Postby Bluewaterhooker0 » Wed Jul 13, 2016 7:18 pm

CaNorseman wrote:I changed the oil and filter on my 91 aspencade prior to a long trip. I used Mobil 1 10-40 Synthetic for motorcycles. I am hearing more Drive train howl. Heard most at 70-85 mph.The noise stays the same pitch in 4th and 5th gear but disappears if I engage the clutch. Any Idea what is going on?


Engage the clutch, as in letting the lever out to engage the transmission ? It makes the noise mostly, or totally while the clutch is disengaged ? As in the lever is pulled in ? Why would you be driving down the road with the clutch disengaged ?

Alternator dampeners would tend to follow engine RPM's, not road speed. They are driven directly by the engine, as is the alternator.

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CaNorseman
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Location: Modesto,Ca
Motorcycle: 1991 GL1500 Aspencade, 1976 GL1000 (for sale) 81 cx500d(sold), 75 cb400f(sold), 1971 SL175(sold)

Re: Noisy transmission

Postby CaNorseman » Wed Jul 27, 2016 9:01 pm

I respect your opinions on other issues,But I see we don't communicate well. I engage the clutch by pulling the clutch lever and the clutch releases the drive of the engine from the transmission. Ok I'm not a techno wizard so try to relate to a poor redneck.I agree with your thought about the alternator dampers.

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CaNorseman
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Location: Modesto,Ca
Motorcycle: 1991 GL1500 Aspencade, 1976 GL1000 (for sale) 81 cx500d(sold), 75 cb400f(sold), 1971 SL175(sold)

Re: Noisy transmission

Postby CaNorseman » Wed Jul 27, 2016 9:06 pm

In my world a hoe is a gardening tool

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Bluewaterhooker0
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Re: Noisy transmission

Postby Bluewaterhooker0 » Thu Jul 28, 2016 12:02 am

CaNorseman wrote:I changed the oil and filter on my 91 aspencade prior to a long trip. I used Mobil 1 10-40 Synthetic for motorcycles. I am hearing more Drive train howl. Heard most at 70-85 mph.The noise stays the same pitch in 4th and 5th gear but disappears if I engage the clutch. Any Idea what is going on?


You might want to look at the drive shaft and universal joint. Those splines on the shaft need to be lubricated periodically with Moly paste to allow the spline to freely move in and out of its drive mechanism, or the universal joint may be in the early stages of failure. They can make more, or less noise when loaded and unloaded, as you describe when pulling the clutch. Many have described similar noises caused by failing joints. Usually the noise will change when loading with throttle, then cruising with an equal amount of light throttle, and then reverse loading the joint by releasing the throttle and "braking" with the engine resistance. That's my best guess.

Did this noise occurrence coincide with the oil change ? To a different oil than usual ? I use exactly the same oil, myself.

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spiralout
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1980 GL1100I (with '77 1000 engine)
1996 GL1500 SE

Re: Noisy transmission

Postby spiralout » Thu Jul 28, 2016 9:16 am

CaNorseman wrote: I engage the clutch by pulling the clutch lever and the clutch releases the drive of the engine from the transmission.

That would be disengaging the clutch. Engaging it would be releasing the lever so the clutch grabs. ;)

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CaNorseman
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Motorcycle: 1991 GL1500 Aspencade, 1976 GL1000 (for sale) 81 cx500d(sold), 75 cb400f(sold), 1971 SL175(sold)

Re: Noisy transmission

Postby CaNorseman » Thu Jul 28, 2016 8:22 pm

Thank you Bluewater.

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CaNorseman
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Motorcycle: 1991 GL1500 Aspencade, 1976 GL1000 (for sale) 81 cx500d(sold), 75 cb400f(sold), 1971 SL175(sold)

Re: Noisy transmission

Postby CaNorseman » Thu Jul 28, 2016 8:28 pm

Ok Ok. Engage or disengage is not the question. I pull the little lever on the left and the noise goes away. Thank to all for the fun topic. Haven't had one since the ex-wife left. :D




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