85 GL1200 Goldwing rims&tire clearance


Information and questions on GL1200 Goldwings (1984-1987)
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highmilage
Posts: 10
Joined: Thu Jan 24, 2013 6:56 pm
Location: Port Angeles, Washington
Motorcycle: motorcycle 1985 Honda Goldwing GL1200 Aspencade

85 GL1200 Goldwing rims&tire clearance

Postby highmilage » Sat May 25, 2013 12:33 pm



My 85 Wing(recently acquired) has a wobble in the front at just about any speed when one loosens grip on handlebars,like stretching hands but keeping the palm of hand still resting on grip. This will happen fairly constistent,as I'm a retired mechanic the instinct of treating it like a car or truck kicked in,I attatched a dial indicator to check the lateral runout of the brake rotors as well as the rim. I don't know if this is a viable check but the results indicated that the rim had a .013" amount of runout,rotors had .009". Since typically rotors don't come into play unless your applying the brake I'm wondering if there is just an issue with the rim,couldn't see a seperated tread upon spinning the front tire either. Searched for anything loose nothing found, No visible dings in the rim,is there an issue with these 9 spoke rims warping? My other concern is the amount of clearance between the rear tire and the swing arm on right side,only about 1/4 of inch if that,while other side has an easy half inch or so,reason for concern is I noticed a spot on the right side wall that looked almost polished that was about half inch wide and go's completely around tire. Upon inspection it looked like at 1 point or another the rear tire had made contact with the swing arm,no damage whatsoever to tire and checked the rear lateral runout which was good,.001" and nothing visible touching the tire during rotation of wheel,as far as I know that may be reason rear tire was NEW when I purchased,any advice would be greatly appreciated!



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highmilage
Posts: 10
Joined: Thu Jan 24, 2013 6:56 pm
Location: Port Angeles, Washington
Motorcycle: motorcycle 1985 Honda Goldwing GL1200 Aspencade

Re: 85 GL1200 Goldwing rims&tire clearance

Postby highmilage » Sat May 25, 2013 2:45 pm

I posted the questions and have since learned from my old 81 Goldwing repair manuel that atleast in the 81 year model the lateral runout checks are to be performed with parts removed from bike and tested with variouse equipment "that I don't have" off the motorcycle. Am however wondering if the lateral tests I performed with tire,rotors and rim still on the bike are in any way a valid method of checking these tolerances. This 1985 Goldwing Aspencade is by far the best motorcycle i've ever had,just a few issue's the previouse owner didn't address.

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SilverDave
Posts: 367
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Location: Langley, BC
Motorcycle: 1985 GL1200 GoldWing Aspy

Re: 85 GL1200 Goldwing rims&tire clearance

Postby SilverDave » Sat May 25, 2013 10:10 pm

The rear clearance on a !1200 wing is very small... Usually you have to deflate the tire to get the rear wheel off and on ...
I once bought a fancy rear with RWL ( Raised White Lettering ) and it scrapped terribly... The dealer exchanged it for a blackwall and a 25 dollar restocking charge ..

Front wheels are VERY easy to remove ... The FCW '85 1200 is an very fine machine, but it is 27 years old... who knows whats happened to that wheel ?
For peace of mind , I'd remove it, and take it to a specialist wheel dealer...

They are not going to charge you very much to do a proper run out on both wheel and tire.... and you will feel better.

Tires, balance , bent wheels, Air Pressure, bearings , Steering bushings can all cause wobble .

If the wheel is bent... consider, after 27 years .. Its time to replace it.

If its the tire ( unlikely ) then tires are " Consumable ".

If its something else... find and test it .

oh...
wobble in front can often lead to " Death Wobble " a sort of tank slapper...

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Mooseman
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Location: Napa, CA
Motorcycle: 1996 GL1500SE 88k
1986 GL1200A (SOLD) 81K
1985 GL1200A (SOLD) 85K
1986 BMW K75c 25K

Re: 85 GL1200 Goldwing rims&tire clearance

Postby Mooseman » Sun May 26, 2013 12:25 pm

You didn't say what brand tire you are running. It makes a difference. The tire clearance is close and the Continental is the worst in my experience rubbing in the front and rear. It's been my experience that Dunlop's are the worst for cupping and wobble. Run 40psi in the front helps and also helps prevent cupping. Tire type and road surface are also a factor.
Enjoy the ride. They are all good, just some better than others.
Mooseman

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highmilage
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Location: Port Angeles, Washington
Motorcycle: motorcycle 1985 Honda Goldwing GL1200 Aspencade

Re: 85 GL1200 Goldwing rims&tire clearance

Postby highmilage » Sun May 26, 2013 2:06 pm

Mooseman wrote:You didn't say what brand tire you are running. It makes a difference. The tire clearance is close and the Continental is the worst in my experience rubbing in the front and rear. It's been my experience that Dunlop's are the worst for cupping and wobble. Run 40psi in the front helps and also helps prevent cupping. Tire type and road surface are also a factor.

I have Dunlops on both front and rear,am running that exact pressure,,Thanks for the advice,with the possiblilty of it turning into deathwobble i've no choice but to take to a shop with the proper equipment to give'er a good looking over. I was suspiciouse of several factors before purchasing and a short test drive doesn't cut it when acquiring particularly a used bike,however am still happy overall with this Wing.

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Mooseman
Posts: 383
Joined: Thu Sep 10, 2009 11:10 am
Location: Napa, CA
Motorcycle: 1996 GL1500SE 88k
1986 GL1200A (SOLD) 81K
1985 GL1200A (SOLD) 85K
1986 BMW K75c 25K

Re: 85 GL1200 Goldwing rims&tire clearance

Postby Mooseman » Sun May 26, 2013 4:15 pm

Since you are running Dunlop's. If you have any cupping at all, it will cause a wobble. Do let us know what you find.
Enjoy the ride. They are all good, just some better than others.
Mooseman

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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 85 GL1200 Goldwing rims&tire clearance

Postby WingAdmin » Wed May 29, 2013 1:58 pm

I had a wobble on my 1100 that turned out to be incorrectly installed swingarm pivot bolts, leading to lateral play in the swingarm. There are a great many different things that can cause wobble, not just runout. Loose/worn bearings in wheels, swingarm pivot and steering head, along with tires, wheels, etc.

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highmilage
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Location: Port Angeles, Washington
Motorcycle: motorcycle 1985 Honda Goldwing GL1200 Aspencade

Re: 85 GL1200 Goldwing rims&tire clearance

Postby highmilage » Thu May 30, 2013 3:45 pm

I contacted the dealership that sold me the Wing,after describing the problem they told me they would repair at NO cost to me! I did sign documents stating "as is",however they were very accommadating regarding this issue. The bike is still there waiting for parts,apparently they have access to a website that addressed this issue stating that it was a common problem particularly at speeds of 30 to 40 mph at decelleration. According to there information the steering stem bearings are the culprit,the article went on further to say that the bearings have been changed to a differant type,specifically for this issue. I'm currently awaiting parts arrival,(supposed to be in a week). Having read these articles they acquired i'm hopefull the wobble will be a thing of the past when I get it back,and as soon as I know I will post the results,if these not only new but different design bearings cure my particular problem I would absolutely post the entire article they gave me if I knew how! The documents consist of about 4 pages of how to install along with the bearing part numbers. I may be jumping the gun "so to speak",but if this cures the issue,again atleast on my wing,I would like to share the info with the obviouse disclaimer that because of so many possibilities that could cause front end wobble,that this will not be the cure-all for every aspect of this type of problem. Any information regarding how to post these articles would be appreciated; I don't have a scanner,all i've got is a smartphone with internet capability,regardless if this cures my problem the information i'm shure would be helpfull in some scenerio's,just want to contribute in an effort to help us all ride safe!




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