Front forks Questions


Information and questions on GL1500 Goldwings (1988-2000)
  • Sponsored Links
User avatar
bstig60
Posts: 808
Joined: Sat Jun 29, 2013 9:14 pm
Location: Nevada City, CA. Jupiter, FL.
Motorcycle: 1999 GL1500AC ASP
1999 Virago XV1100LC
1994 Time Out Camping Trailer
Contact:

Front forks Questions

Postby bstig60 » Sun Jul 05, 2015 11:53 pm



I have a low mileage 99 GL1500. If I hit a pothole it gives the front end quite a jolt and makes considerable noise. The front end is stock and there is no sign of problems with the steering head bearings or the fork seals. I have a fork brace installed. I checked the air in the forks this afternoon and found the left for had no air in it and the right one had about 3.5 lbs. Since I don't have an extension long enough for my hand pump and I am not willing to use my air compressor for such a small amount of air, I let the air out of the right fork so now at least they match. As I recall running 0 lbs of air in the forks is OK. I had not noticed any handling problems at all other than the pothole issue mentioned above. I am taking off tomorrow afternoon on a short trip, about 140 miles. I am wondering if less air in the forks will make for a softer ride. The front forks seemed pretty stiff before. Suggestions???


Bill

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Front forks Questions

Postby WingAdmin » Mon Jul 06, 2015 1:13 pm

Do you know if you have Progressive springs? If so, there should be 0 psi in both forks.

When is the last time you checked/flushed/changed your fork oil?

User avatar
bstig60
Posts: 808
Joined: Sat Jun 29, 2013 9:14 pm
Location: Nevada City, CA. Jupiter, FL.
Motorcycle: 1999 GL1500AC ASP
1999 Virago XV1100LC
1994 Time Out Camping Trailer
Contact:

Re: Front forks Questions

Postby bstig60 » Mon Jul 06, 2015 1:23 pm

I bought the bike about seven months ago with 3300 miles on it, so I don't know if the pork oil has ever been changed or not. As far as I know I do not have progressive Springs, the front end is stock
Bill

User avatar
ct1500
Posts: 813
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500
Contact:

Re: Front forks Questions

Postby ct1500 » Mon Jul 06, 2015 5:14 pm

Regardless of mileage, as it is new to you the one fork that had no air should serve as an indicator that all might not be well up front.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

User avatar
Dusty Boots
Posts: 573
Joined: Mon Oct 26, 2009 4:25 pm
Location: Alvinston, SW ON
Motorcycle: 1992 GL1500Aspencade

Re: Front forks Questions

Postby Dusty Boots » Wed Jul 08, 2015 4:54 pm

I'd go for your ride and then think about changing out the fork oil. Although there are not many miles on the bike, the fork oil that's in there is old and needs to be changed out.
Whether you want to change over to a set of Progressive springs or not is your decision, but varying the amount and weight of fork oil will affect your ride.
Do a search here and read up on it.

User avatar
bstig60
Posts: 808
Joined: Sat Jun 29, 2013 9:14 pm
Location: Nevada City, CA. Jupiter, FL.
Motorcycle: 1999 GL1500AC ASP
1999 Virago XV1100LC
1994 Time Out Camping Trailer
Contact:

Re: Front forks Questions

Postby bstig60 » Fri Jul 10, 2015 9:24 pm

Thanks, Dusty. That is what I am going to do. I will put Progressive Spings in the forks when I do the oil change. I have always used 15w oil in the forks on all my bikes. Is it advisable here or should I stick with the ATF?
Bill

User avatar
wingman12
Posts: 610
Joined: Fri Aug 22, 2014 5:01 pm
Location: Land of Lincoln
Motorcycle: 1999 gl1500 se

Re: Front forks Questions

Postby wingman12 » Fri Jul 10, 2015 10:20 pm

I just recently went to the progressive springs and everything I read said 15w and do not not use ATF in the front forks, ok in the air shocks. :D :D

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Front forks Questions

Postby WingAdmin » Mon Jul 13, 2015 11:55 am

The progressive springs are a bit more stiff, and obviously 15 weight oil will increase damping resistance somewhat, so as long as you are OK with the firm front end, go with 15W fork oil. This is what I did in my 1500.

ATF is 10 weight. Even if I was going to use 10 weight oil, I would still use fork oil over ATF, as fork oil typically has additives specifically intended for forks that you normally won't find in ATF. Things like seal softener (to keep seals soft, pliable and sealed) and friction modifiers such as moly, to help reduce slider stiction.

User avatar
bstig60
Posts: 808
Joined: Sat Jun 29, 2013 9:14 pm
Location: Nevada City, CA. Jupiter, FL.
Motorcycle: 1999 GL1500AC ASP
1999 Virago XV1100LC
1994 Time Out Camping Trailer
Contact:

Re: Front forks Questions

Postby bstig60 » Mon Jul 13, 2015 7:39 pm

Thanks for the reply's...... The progressive springs should give a good ride and firm up as they compress. I will use fork oil, just not sure if I want to go the 15w route or stay with 10w. Seals are good, but I may just go ahead and replace them too while I have the forks off the bike. I will probably postpone this until the majority of my riding is done for the season.


Bill


Return to “GL1500 Information & Questions”




Who is online

Users browsing this forum: No registered users and 3 guests