Suspension


Information and questions on GL1500 Goldwings (1988-2000)
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danw
Posts: 13
Joined: Sun Sep 05, 2010 3:03 pm
Location: United Kingdom
Motorcycle: 2000 GL1500SE

Suspension

Postby danw » Wed Oct 06, 2010 1:40 pm



Just a question for all you experienced wingers re the suspension. I ride a GL1500 SE 2000, I find the bike very sensitive to changes in the suspension pressure, too low and it is sluggish to high and it is skittish particularly on coming to a stop, just right and it handles perfectly as if on rails. During the week I ride solo and need about 48psi for very tame gentle bike which is excellent for heavy traffic, stop start work in Edinburgh, on the weekends I carry pillions a friend and my Mrs alternatively and need 52 psi for one and 53 psi for the other and the bike is just beautiful, however just lately I have found the suspension system building pressure itself over the course of a ride and when left unattended for instance this morning I set it at 48psi before leaving home and gradually found the bike becoming more and more skittish as I rode to work a ride of about 35 mins finding it to be 56psi when I got to work, on the way home it increased from48 to 60 psi in the space of about 8 miles and I had to stop and drop it again after which it remained at 48 for the rest of the ride home about 15miles. Any thoughts ideas, suggestions, comments as to why the bike is doing this, is it operator error and what can I do about it. Also I would be interested to know if there is any impact on tyre traction and function relevant to suspension pressure.



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robb
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Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: Suspension

Postby robb » Thu Oct 14, 2010 5:11 pm

My 89 rides best with 48-55 psi in shock. Have noticed that on a sunny day when surface temp increases there is expansion in shock. Have seen as much as 15 psi increase. Night not be very noticable to some, but at under 5'8" I can. Riding near 80 mph on superslab it will increase regardless of temp.

BikerGuy
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Location: Weatherford, Tx
Motorcycle: 2008 Goldwing
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Re: Suspension

Postby BikerGuy » Mon Nov 01, 2010 7:55 pm

Putting about 8 pounds in your front shocks makes a difference too. I thought that the gauge read the pressure from the rear air chock and the front air shocks, but it doesn't.

FYI, something I learned - There's only one air shock in the rear and that's the only one the onboard compressor fills. The 2 air shocks on the front have to be filled manually. But be careful using an air compressor. Just a quick burst of air and that's it. Then let the air out until you get the pressure you want - 5 to 8 pounds. otherwise if you put in too much air, you can blow out the seals....... I would use the onboard compressor with the air hose that attaches to it because it pumps out very little air compared to a real air compressor.

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detdrbuzzard
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Re: Suspension

Postby detdrbuzzard » Wed Nov 03, 2010 6:36 am

use a hand or foot pump for the front, it is very easy to blow the seals
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BikerGuy
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Re: Suspension

Postby BikerGuy » Wed Nov 03, 2010 1:41 pm

The onboard compressor isn't strong enough to blow the seals unless you purposely overfill it. It just blows puffs of air.. It's hardly a compressor! :roll:

detdrbuzzard wrote:use a hand or foot pump for the front, it is very easy to blow the seals

danw
Posts: 13
Joined: Sun Sep 05, 2010 3:03 pm
Location: United Kingdom
Motorcycle: 2000 GL1500SE

Re: Suspension

Postby danw » Sun Nov 28, 2010 4:25 pm

Thanks for your information guys however things have got worse since my last post. The compressor seems to run constantly now any the bike is increasing rear suspension pressure as I ride ans in the space of a few miles it can increase from 48 psi to 50-56 psi in the space of four to five miles. I really don't know what is happening here except that the handling is affected as I ride. So don't know what to do other than over haul the whole system.

Any suggestions most welcome.

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thornev
Posts: 18
Joined: Mon Oct 04, 2010 9:04 am
Location: Poughkeepsie, New York
Motorcycle: 1993 GL1500SE

Re: Suspension

Postby thornev » Mon Nov 29, 2010 4:28 pm

If it is indeed the case that the compressor runs simply by turning on the bike, it's time for service. That sounds dangerous. Although it takes a press of 2 buttons simultaneously to get the compressor working (at least on my 1993 GL1500 SE), it sounds as if a button is stuck in the ON position.

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BillyBoy
Posts: 5
Joined: Sat Aug 04, 2012 7:47 pm
Location: Port Charlotte Fl.
Motorcycle: 1994 GL 1500 Aspencade

Re: Suspension

Postby BillyBoy » Tue Aug 21, 2012 10:19 pm

Hi
I have a problem with too much air in rear shock. [ 87 psi on gage, max. is about 53psi ]
I tried to lower the pressure with the 2 bottons up front. They don't work.
Is there a way to lower the pressure in rear shock manualy without using the front controls ?
Thanks

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robb
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Re: Suspension

Postby robb » Tue Aug 21, 2012 10:41 pm

I have pumped rear to 75psi to avoid falling over around kids and was shocked to see mid 80's after a few hours in sun. Was told by dealer tech it can handle 100psi before leaking.

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robb
Posts: 1040
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Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: Suspension

Postby robb » Thu Aug 23, 2012 8:38 pm

Remove the airline in right bag to see if pressure will go down, or remove bag and pull line from shock.

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BillyBoy
Posts: 5
Joined: Sat Aug 04, 2012 7:47 pm
Location: Port Charlotte Fl.
Motorcycle: 1994 GL 1500 Aspencade

Re: Suspension

Postby BillyBoy » Fri Aug 24, 2012 5:15 am

Thanks for the help. I'll try that today.




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