Scraping sound when wheeling bike....

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Correction, due to circlip 47 not installed correctly, all parts in brake drum sprocket had moved right not left..... I think, rather confusing anyhow it was wrong!
 
DogT said:
Good deal.

Dave
69S


And thanks for your observation Dave from the posted photo that the swing arm appeared to touch the primary case, as on taking another look over the weekend you were right! :D
 
Good to see that it was a easy fix, now to the next fix up, and enjoy it even more when you get it right and taking it out for a run.

Ashley
 
Pjr1440 said:
In a couple of weeks I will look at the primary case shims as I checked clearance of the swing arm, while the rear wheel was off and the swing arm is touching the primary case, so I need to fix this.

Before you dig too deeply into the primary, try just loosening the mounting nut for the cover and see if the inner cover moves away from the swingarm. The flat surface of the inner cover is very thin. If the cover mounting nut is overtightened it can bend the inner to the point it fouls the chain or the swingarm. I found that some Hylomar in the grove for the o-ring and a new o-ring meant I could get away without cranking down on the nut to get a seal. Loctite on the nut kept it together.
 
rpatton said:
Pjr1440 said:
In a couple of weeks I will look at the primary case shims as I checked clearance of the swing arm, while the rear wheel was off and the swing arm is touching the primary case, so I need to fix this.

Before you dig too deeply into the primary, try just loosening the mounting nut for the cover and see if the inner cover moves away from the swingarm. The flat surface of the inner cover is very thin. If the cover mounting nut is overtightened it can bend the inner to the point it fouls the chain or the swingarm. I found that some Hylomar in the grove for the o-ring and a new o-ring meant I could get away without cranking down on the nut to get a seal. Loctite on the nut kept it together.


Sounds good, will do. Given one extra washer in rear hub, and the fact that when I changed the oil filter it was so tight that it took a large screwdriver inserted three times with three guys hauling on it to unscrew the filter, never know my luck with this tip!
 
Re: Scraping sound when wheeling bike.... Update

Thought I would give a quick update on progress....l

1. Rear wheel started scraping again. Pulled apart again, and put in new circlip no47, also realised that washer no 21 was missing (this was the in correct one I removed last time - not even close to correct size or thickness), so ordered one and installed. Now appears all good.

2. Visually confirmed shims in place behind main primary bolt. Loosened off the primary nut ( hmmm that was very very tight) and the inner primary did move out further away from Chain, and left more space from the swingarm. Changed primary oil, checked for cracks, no worries there.

Then I changed oil, polished her, compression tested her and all good with two pots registering 120psi, but broke throttle cable on last compression test kick. Ordered new one, arrived brocken. Ordered another..... Will arrive new week.... Finally I am busting for a good ride it's been a while!

Thanks for your help on these problems guys, made it a lot easier!
 
Pjr

Thanks for update and good to hear getting close to the road.
Feedback is usefull so we know what ultimately solves problem so when similar symptoms come up with others we have a good idea what advice to give for solution.

When you installed circlip did you set it so the sharp edge is pointing to outside to best resist slipping out?

Bob
 
rx7171 said:
Pjr

Thanks for update and good to hear getting close to the road.
Feedback is usefull so we know what ultimately solves problem so when similar symptoms come up with others we have a good idea what advice to give for solution.

When you installed circlip did you set it so the sharp edge is pointing to outside to best resist slipping out?

Bob

Well I specifically looked at the circlip knowing that the advice is to install sharp edge out, but both sides where the same. It was a new circlip from old britts. Of interest the old circlip was significantly more compressed, ie the distance between both open ends was larger. It took quite a lot of effort to get it to clip into the grove. I think the trick is to put it in the grove with no bearing in place and measure the gap on the open end of the circlip. Then install the bearing and circlip and check the gap, this encouraged me to keep working it in for some time till it finally clicked in correctly.
 
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