rear shocks bottom out with max pressure, forks seized?


Information and questions on GL1100 Goldwings (1980-1983)
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Roadgypsy
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Motorcycle: 1980 GL1100 Goldwing w/ vetter package 1985 Suzuki Madura GV1200

rear shocks bottom out with max pressure, forks seized?

Postby Roadgypsy » Tue Jun 16, 2015 7:52 am



Just tried my new wing a mile to work today, and noticed I seem to have no rear support despite gauge reading 43psi, max pres by the sticker on frame. Then noticed my front forks weren't moving at all as far as can tell, I know the seals were leaking, maybe no oil at all? Is there any kind of ride adjustment for rear shocks on an 80 or just the varied air pressure?



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WingAdmin
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Re: rear shocks bottom out with max pressure, forks seized?

Postby WingAdmin » Tue Jun 16, 2015 9:50 am

How are your rear springs? When you say you have no rear support, do you mean the back end doesn't compress? Or it's sagged and compressed all the way, all the time?

If you push the bike forwards gently, then suddenly grab the front brakes hard on, do the front forks compress at all?

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Roadgypsy
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Re: rear shocks bottom out with max pressure, forks seized?

Postby Roadgypsy » Tue Jun 16, 2015 9:58 am

Forgot to try front brake trick, was going to do that when got home. I put it on center stand and bounced the front wheel to no visible effect. The rears do compress and expand, but bottom out with a push, let alone my full 300 lbs. Maybe they're aftermarket and take a higher pressure? Was gonna search the brand name when got home too. They had about 25 psi on the ride, I pumped them up to 43 to no apparent difference while sitting.

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WingAdmin
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Posts: 17045
Joined: Fri Oct 03, 2008 4:16 pm
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1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: rear shocks bottom out with max pressure, forks seized?

Postby WingAdmin » Tue Jun 16, 2015 10:16 am

Roadgypsy wrote:Forgot to try front brake trick, was going to do that when got home. I put it on center stand and bounced the front wheel to no visible effect. The rears do compress and expand, but bottom out with a push, let alone my full 300 lbs. Maybe they're aftermarket and take a higher pressure? Was gonna search the brand name when got home too. They had about 25 psi on the ride, I pumped them up to 43 to no apparent difference while sitting.


The rear shocks should be able to support the bike reasonably well with no air pressure at all. If the shocks are bottoming out with just a push, then either the springs are totally worn out, or the shocks are undersized for the bike.

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Roadgypsy
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Joined: Sat Jun 13, 2015 4:54 pm
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Motorcycle: 1980 GL1100 Goldwing w/ vetter package 1985 Suzuki Madura GV1200

Re: rear shocks bottom out with max pressure, forks seized?

Postby Roadgypsy » Tue Jun 16, 2015 7:30 pm

Got home and the forks bounce when hit the brake. Looks like my rears are showa 461's, initial search says they're for a 900 so maybe too small, will have to research more when not on phone. I did also read that if I'm filling the rear suspension with the wheel on ground, it's not all getting to shocks.

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Wilcoy02
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Re: rear shocks bottom out with max pressure, forks seized?

Postby Wilcoy02 » Tue Jun 16, 2015 9:06 pm

If you want to replace the springs and seals here is my video. Cost me less than $100.00 to do both rear shocks. Part numbers are in #12
Watch the first one and you will see why one should not use an air hose to pump up the shocks. This will blow your seals clean out.

viewtopic.php?f=11&t=27146




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