*Update* - Its not good...


Information and questions on GL1200 Goldwings (1984-1987)
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Psycheonabike
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*Update* - Its not good...

Post by Psycheonabike » Fri Mar 29, 2019 11:14 am



Spoke to mechanic re this mystery bumping I have been experiencing. Not good news. He has no idea what the problem is - suggested it might be a "...mixture of different things..." but wasn't prepared to be specific. Suggested the 'gearbox' but none of it fits in with the actual symptoms. It feels for the world like an uneven tyre or rim - but its definitely not!

Feeling pissed off right now :!:



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redbug
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Location: Broken Arrow,Ok
Motorcycle: 1983 Gl1100I
1986 Harley FLHT

Re: *Update* - Its not good...

Post by redbug » Fri Mar 29, 2019 12:10 pm

Did you ever get the fork oil changed? Might of missed the response but that was on mar 1st. If you did what, weight of oil and what amount did you use? Did you get right with the the air and suspension system? Try setting up your air system on the center stand using a hand pump vs side stand. You questioned steering head bearings one time. Are we good there?
" Riding on Tulsa Time "

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redbug
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Motorcycle: 1983 Gl1100I
1986 Harley FLHT

Re: *Update* - Its not good...

Post by redbug » Fri Mar 29, 2019 12:26 pm

redbug wrote:
Fri Mar 29, 2019 12:10 pm
Did you ever get the fork oil changed? Might of missed the response but that was on mar 1st. If you did what, weight of oil and what amount did you use? Did you get right with the the air and suspension system? Try setting up your air system on the center stand using a hand pump vs side stand. You questioned steering head bearings one time. Are we good there?
Just found this site www.gl1100goldwings.com All and only 1200s, more help for your situation,hope this helps.
" Riding on Tulsa Time "

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redbug
Posts: 525
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Location: Broken Arrow,Ok
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1986 Harley FLHT

Re: *Update* - Its not good...

Post by redbug » Fri Mar 29, 2019 2:39 pm

Did you start a new thread here? You need to put docs on instant mssg alert . Been waiting over two hours for a reply. Just takes a second to go brb.
" Riding on Tulsa Time "

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Fri Mar 29, 2019 3:47 pm

redbug wrote:
Fri Mar 29, 2019 2:39 pm
Did you start a new thread here? You need to put docs on instant mssg alert . Been waiting over two hours for a reply. Just takes a second to go brb.
I was driving.....

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redbug
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1986 Harley FLHT

Re: *Update* - Its not good...

Post by redbug » Fri Mar 29, 2019 4:11 pm

good, your motorcycle doing ok then?
" Riding on Tulsa Time "

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Fri Mar 29, 2019 4:34 pm

redbug wrote:
Fri Mar 29, 2019 4:11 pm
good, your motorcycle doing ok then?
No. I was 'driving not 'riding' as I was on my way to collect my bike.

To answer your questions.....no, I haven't changed to fork oil. The problem is at the rear of the bike.

Steering head bearings are fine according to mechanic. In fact everything 'regarding bearings, shocks, final drive, flange and swingarm is fine according to him

I have no idea what the problem is.

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redbug
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1986 Harley FLHT

Re: *Update* - Its not good...

Post by redbug » Fri Mar 29, 2019 5:35 pm

Man, a brain teaser for sure.
" Riding on Tulsa Time "

Good Hondog
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Re: *Update* - Its not good...

Post by Good Hondog » Fri Mar 29, 2019 5:51 pm

After reviewing everything you've done so far the only 2 things I can think of that's left to check on your bike is the rear brake rotor for warping and the removable frame section for correct tightness located on the bottom left side of the frame under the engine.

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CrystalPistol
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Re: *Update* - Its not good...

Post by CrystalPistol » Fri Mar 29, 2019 10:21 pm

Maybe I missed it, or just forgot? ….. but has the rear wheel been off, was the bearing still a tight fit on the FD side of wheel?
Image

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sat Mar 30, 2019 1:37 am

CrystalPistol wrote:
Fri Mar 29, 2019 10:21 pm
Maybe I missed it, or just forgot? ….. but has the rear wheel been off, was the bearing still a tight fit on the FD side of wheel?
Yep, all bearings checked, they were the first thing looked at actually.

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sat Mar 30, 2019 1:39 am

redbug wrote:
Fri Mar 29, 2019 5:35 pm
Man, a brain teaser for sure.
I know right!! I am sat by my laptop now. A cold and misty English morning.....to satisfy myself I am going to put that new UJ in, change the Swingarm bearings, change seals in brake caliper.

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sat Mar 30, 2019 1:42 am

Good Hondog wrote:
Fri Mar 29, 2019 5:51 pm
After reviewing everything you've done so far the only 2 things I can think of that's left to check on your bike is the rear brake rotor for warping and the removable frame section for correct tightness located on the bottom left side of the frame under the engine.
You know its funny that you mention the rear rotor. I think it is warped somewhat. There is a juddering when I use the reat brake and the rear wheel doesn't spin freely with it on. I'll pay extra attention to that today. Probably give the master Cylinder a good clean too.

Thanks everyone for your feedback - we will solve this mystery soon eh? :roll:

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CrystalPistol
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Re: *Update* - Its not good...

Post by CrystalPistol » Sat Mar 30, 2019 11:22 am

All it takes to "warp" a rotor some is a fall of a wheel onto a concrete floor when off for a tire change, doesn't have to be heat related. A wheel with tire still on it and rotor,just removed from bike, being rolled out of way, falls over on side. Ouch?

Friend's 1200 had a seized rear caliper, you could hardly push the bike and to ride it took a lot of throttle, when rear brake got hot, it would "judder". You could wedge the caliper a little with a small prybar, it'd push easy until that rear brake was used and caliper would stick clamped on rotor.

Seen brake hoses suffer internal defect and also stop fluid pressure release. Then, just crack a bleeder for a split second and if releases, hose is bad.
Image

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sat Mar 30, 2019 3:41 pm

Good Hondog wrote:
Fri Mar 29, 2019 5:51 pm
After reviewing everything you've done so far the only 2 things I can think of that's left to check on your bike is the rear brake rotor for warping and the removable frame section for correct tightness located on the bottom left side of the frame under the engine.
Removable frame section?

Good Hondog
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Re: *Update* - Its not good...

Post by Good Hondog » Sat Mar 30, 2019 4:21 pm

The frame just under the left side of the engine is actually bolted into place and not part of the welded assembly. It is typically unbolted and removed when the engine is to be taken out of the bike. Without that feature of the frame it would be impossible to remove a Goldwing engine from the bike. Look on either end of that removable piece and you'll see 2 bolts with acorn nuts. If that section was loose it would allow a lot of frame flex as you tried riding your bike.

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sat Mar 30, 2019 4:41 pm

Thanks....another go tomorrow!

tire joe
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Re: *Update* - Its not good...

Post by tire joe » Sat Mar 30, 2019 9:21 pm

Tire out of round , tire out of balance ,Tire delamination , water dirt or tools left in tire and warped brake rotor .

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sun Mar 31, 2019 2:30 am

tire joe wrote:
Sat Mar 30, 2019 9:21 pm
Tire out of round , tire out of balance ,Tire delamination , water dirt or tools left in tire and warped brake rotor .
All checked mate....the mystery remains.

Yesterday I gave the rear caliper a good clean with new seals. The slider was seized so that's free now. Also took out the swingarm pivot bolts. Right one was fine regreased and put back (didn't realise you could see the UJ through there!!) The left one had some rust just after the thread and little grease so cleaned and greased up. Despite having a new bearing and seal kit I didn't take the swingarm off as limited time yesterday.

Going to rebalance the carbs today and run a bit of Redex (UK version of Seafoam) through them. Check tyre pressures and take her out. Finding it easier to maintain with th lower fairing off and quite like the look of her without that too.

Facing all that the only other options now are changing UJ (though not convinced that's the problem). Change swingarm bearings. Maybe cush rubbers but all seemed good in the FD when I last looked. Could I be looking at the wrong end of the Bike? I mean I would swear night is day the problem is at the rear though especially as the bumpiness (can't think of another word to describe it) is worse under load - even more so under 20mph in 1st or 2nd gear and riding up a slight incline. Feels like the rear is going over speed bumps!!

Pulling hair out now!! 😫

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Maz
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Re: *Update* - Its not good...

Post by Maz » Sun Mar 31, 2019 5:04 am

Another thought - get a friend to ride with you on another bike and have him ride alongside, behind, everywhere around you to see if he can spot anything amiss. I know, when I ride in a group, someone will always spot something wrong with someone else's bike which you won't spot when it's standing still.
Maz
Ironically, Common Sense is the LEAST common of all senses!

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sun Mar 31, 2019 6:04 am

Maz wrote:
Sun Mar 31, 2019 5:04 am
Another thought - get a friend to ride with you on another bike and have him ride alongside......
Good shout! ;)

tire joe
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Re: *Update* - Its not good...

Post by tire joe » Sun Mar 31, 2019 9:35 am

I had a tire to start bumping one time , it was wore out. Hard to ride under 25 miles per hour, it showed no visible damage on the outside.

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sun Mar 31, 2019 9:51 am

Unfortunately these are less than a month old.

tire joe
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Re: *Update* - Its not good...

Post by tire joe » Sun Mar 31, 2019 11:01 am

Did you have these problems with bumping before the new tire was installed?

Psycheonabike
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Re: *Update* - Its not good...

Post by Psycheonabike » Sun Mar 31, 2019 11:08 am

Yeah, afraid so. Initially thought it was carbs but then noticed it was happening in neutral AND with the engine off.



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