Goldwing GL1200 Aspencade, 1984. Front wheel vibration


Information and questions on GL1200 Goldwings (1984-1987)
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calito52
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Location: ushuaia, Tierra del Fuego, Argentina
Motorcycle: 1984 GL1200 Aspencade

Goldwing GL1200 Aspencade, 1984. Front wheel vibration

Post by calito52 »



Hi everybody,
I would appreciate any info in how to solve a shimming problem in my bike.
This high vibration appears when I get my hands off the steering, at 30 mph.
Can not finfd the problem in the repair manual.
Thanks
Carlos

PS Tire pressure is Ok,
Steering is new


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newday777
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Re: Goldwing GL1200 Aspencade, 1984. Front wheel vibration

Post by newday777 »

calito52 wrote:Hi everybody,
I would appreciate any info in how to solve a shimming problem in my bike.
This high vibration appears when I get my hands off the steering, at 30 mph.
Can not finfd the problem in the repair manual.
Thanks
Carlos

PS Tire pressure is Ok,
Steering is new
You said steering is new. Meaning????
If the steering bearngs were replaced, were they torqued with a torque wrench in the proper, specified way and torque? This is the place that is the main cause of head shake, especially if the bearings are ball bearings. Tapered head bearings, properly torqued eliminate head shake at the 45-30 mph range while in deceleration. (Others may say tires, and other factors play into it but.... ) Only a torque wrench, steering nut socket and new tapered bearings properly installed and properly torqued will end the deceleration shakes.

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calito52
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Location: ushuaia, Tierra del Fuego, Argentina
Motorcycle: 1984 GL1200 Aspencade

Re: Goldwing GL1200 Aspencade, 1984. Front wheel vibration

Post by calito52 »

Problem solved!!
We went through the manual procedure and use the torque values (they didnt have the exact value before) and it seems to work as it should.
Thank you very much!! :D :D
Ushuaia is not the end of the world, is the begining of everything.

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CrystalPistol
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Re: Goldwing GL1200 Aspencade, 1984. Front wheel vibration

Post by CrystalPistol »

Not to slam anyone .... but I sometimes read these threads about shake when taking hands off handlebars at coast down and I have to ask myself "WHY?".

I mean ..... why are we taking hands off at coast down anyway? That's when there is a weight shift to the front which will shorten trail and put the bike is a less stable condition anyway. Sure, you can torque the tapered roller stem bearings tighter, even if just to spec .... all good .... good to have her "right" .... but why hands off? There's already a specific method of checking stem bearing preload.

Anyway .... back to your regular programming ....... :D
Make Courtesy your "Code of the Road" …

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MikeB
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Re: Goldwing GL1200 Aspencade, 1984. Front wheel vibration

Post by MikeB »

Some folks may do it on coast down just to check and see if they have a shimmy. It can be done at constant speed to check but maybe they don't realize it.
Anyway, a little shimmy between 30 and 40 seems to be prevalent on any Goldwing.
MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 18 Years / Flight Engineer C-130E - C-141B - 6 Years. Retired.
Industrial Maintenance Tech - 22 years.
Retired in Tacoma, WA

Grindl
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Motorcycle: 1978 GL-1000 , 1983 GL-1100A Aspencade

Re: Goldwing GL1200 Aspencade, 1984. Front wheel vibration

Post by Grindl »

There are multiple causes for front-end shimmy beside loose neck bearings , which tend to be the obvious , and "go-to" normal fix . Let me list a few , from experience .

1. Worn fork slider bushings
2. Improper amount of fork oil - Not enough or unbalanced amount per side .
3. Wheel bearing starting to go bad . One side only .
4. Low fork air pressure
5. And believe it or not ; Low air pressure on rear shocks , or worn out mechanical rear shocks can cause a change to the rake / trail , in some instances , that can create shimmy .
6. And of course ; Low tire pressure . Seems funny to me , that the same folks who always whine about tire mileage and / or a occasional shimmy , are also the same ones who want a really "soft" ride , and when I check their tire pressures , they are almost always 8-10 lbs. low . Hmmm....

There is also one more cause of front-end shimmy that has absolutely nothing to do with the bike . Pavement ! Sometimes certain types of pavement , or the manner in which the pavement was "laid down" can also cause minor shimmy . Either when accelerating or decelerating .
Look beyond the obvious when dealing with front-end issues . It may save your life .



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