Where should I look..


Information and questions on GL1000 Goldwings (1975-1979)
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Fetacheese
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Location: Aurora,In
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Where should I look..

Postby Fetacheese » Sat Mar 08, 2014 10:26 am



I been fighting a high pitch whine that started in the middle of last summer.
I tried and tried to narrow the area it is coming from with out success . One time it sounds like it's coming from the front and other times it sounds like it might be coming around the clutch housing area. The Clutch does not slip and I have replaced the timing belt idlers with newer ones ,although used. The whine begins after a short distance in to my ride and only after things have warmed up a bit ,never when I first start the bike up.

It's driving me to a point where I have to start wearing ear plugs,:>) as I can not stand to hear that sound.

Any ideas where I should start looking. Have even used a stethoscope trying to locate where the sound is coming from, with no success.
Thanks.
Feta.



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triketrash
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Location: Shelton, WA
Motorcycle: 1981 GL1100 Interstate

Re: Where should I look..

Postby triketrash » Sat Mar 08, 2014 10:51 am

Does the whine correlate with speed or rpm? In other words, as you increase rpm do you hear it more? Does the bike have to be moving to make the sound?

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Fetacheese
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Re: Where should I look..

Postby Fetacheese » Sat Mar 08, 2014 11:06 am

triketrash wrote:Does the whine correlate with speed or rpm? In other words, as you increase rpm do you hear it more? Does the bike have to be moving to make the sound?


Yes the whine does correlate with rpm. It also does it at idle after a good warm up ,but does not whine with the start up when cold.

Thanks.
Feta.

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Sagebrush
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Location: Raleigh, NC
Motorcycle: 1981 GL1100
1982 GL1100
2001 GL1800 CSC Trike
2002 GL1800

Re: Where should I look..

Postby Sagebrush » Sat Mar 08, 2014 6:19 pm

Check your tach cable or the tack itself. Unplug the cable at the back of the tach if the problem goes away then its the tack. If it doesn't remove the cable where it mounts at the fuel pump if it goes away then its the cable.

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Fetacheese
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Re: Where should I look..

Postby Fetacheese » Sat Mar 08, 2014 7:05 pm

That's a new one on me since I would not have thought to look there myself.
Thanks ,I'll check it out tomorrow hopefully.

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Fetacheese
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Re: Where should I look..

Postby Fetacheese » Sun Mar 09, 2014 3:50 pm

checked the tech drive on both ends as Sagebrush suggested. No cigar.
After checking a bit more, it appears as though the whining sound ( actually it's more like a shrill ) is closer to the clutch housing or towards the rear of the engine . Don't know what's back there to be making that sound when the engine comes up to temperature .. Throw out bearing ,the starters clutch ?
Feta.

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Fred Camper
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Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: Where should I look..

Postby Fred Camper » Sun Mar 09, 2014 8:27 pm

Been known to come from an exhaust header with a collapse internal. My understanding is that something internal can get crushed and then the exhaust results in a whistle.

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Fetacheese
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Motorcycle: 75 GL- 1000

Re: Where should I look..

Postby Fetacheese » Sun Mar 09, 2014 10:35 pm

The noise was there when I had the original horse shoe muffler on the bike .The noise remains still with the 1100 system.

The closest I can figure it's coming from somewhere in the rear part of the motor.
I don't know enough on the make up of the clutch or what else is in that part of the motor that could be making that noise when things get hot. Today I took the bike for a short ride and when I got back home I really had to listen for it unlike yesterday day when I went for a fifty mile ride . When approaching a stop sign or coming up to a red light at a slow speed I could hear the shrilling sound (sounds very much like a dry bearing) quite well .The noise would stop when I disengage the clutch momentarily and commence again if I were to give it gas while the clutch is disengaged. That's what makes me think it's clutch related some way .
Thanks for the thought Fred.
Feta.

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Fred Camper
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Re: Where should I look..

Postby Fred Camper » Mon Mar 10, 2014 9:25 pm

Could it be the shaft or final drive. Those unload with the clutch. But I tend to think the clutch bearing.

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Fetacheese
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Re: Where should I look..

Postby Fetacheese » Mon Mar 10, 2014 9:45 pm

I don't think it's drive shaft related or the final drive . Makes the same noise when in natural.

Next nice day I'm going to drive to my buddy's house and have him run along side of the bike :D .I don't know what else to do. :mrgreen:
Feta.

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Fetacheese
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Re: Where should I look..

Postby Fetacheese » Tue Mar 11, 2014 9:52 am

I'm wondering if it might be the sprague clutch that makes the whining noise when things get hot.

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Fred Camper
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Re: Where should I look..

Postby Fred Camper » Tue Mar 11, 2014 8:53 pm

Sprague makes sense to me.

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Fetacheese
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Re: Where should I look..

Postby Fetacheese » Wed Mar 12, 2014 9:46 am

I guess the next step would be is to verify it's the Sprague that's making the noise . But how would I do that. Any suggestions.
Feta.

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terryt
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Motorcycle: 1979 gl1000 trike

Re: Where should I look..

Postby terryt » Wed Mar 12, 2014 12:16 pm

Fetacheese wrote:I guess the next step would be is to verify it's the Sprague that's making the noise . But how would I do that. Any suggestions.
Feta.

have y

Try flushing the engine out, run the engine until hot, drain the oil into a clean container, pour in the engine flush as per there instructions run it again drain out, refill with old oil, run for about 5 miles drain out fit new filter and oil

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Fetacheese
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Joined: Sat Feb 08, 2014 5:46 pm
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Re: Where should I look..

Postby Fetacheese » Wed Mar 12, 2014 6:03 pm

terry t.
Thanks for the tip. I will do as you suggested the next nice day we get.
Feta.




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