Clutch Actuation Arm

[fatbaldbob]

Had the R80/7 on the ramp the other day to do a job and noticed the clutch actuation arm was rubbing on the frame rail when operated, in fact its caused quite a gouge in it. An iternet search throws nothing up ref this, the frame appears straight and I've certainly not crashed it, the bike is heavily modified in a sort of flat tracker fashion, this was done by someone else.

Do the clutch actuation arms come in different lengths and perhaps its the wrong one? I had a look at a mates and his had a good 10mm clearance from the frame.

Any ideas

 

[oldenoughtoknowbetter]

Sometimes one of the clutch lever pivot lugs snaps off the rear gearbox cover, usually on the ones with the pivot pin held in place with a circlip. That would cause the lever to swing out of true. First thing to check I would think.

 

[fatbaldbob]

Thanks for that, I'll have a look

 

[fatbaldbob]

Still never worked out whats going on, have resorted to removing the arm applied heat and bent it so it's clear of the frame. Sorted now but there must have been something amiss?

 

[Beemerboff]

There is a recent thread on ADV rider re adjusting the arm.
The poster suggests setting the nipple of the cable 201 mm from the case using the adjustment on the cable at the lever, then adjusting the lever with the adjustment at the end of the lever at the push rod to give the required free play in the cable.
Recons pull is much lighter this way too - might even try it myself if it ever stops raining, 6 1/2 '' in a day and a half and it has gone through the shed around the same deep leaving around an inch of sticky black slime everywhere!
Entire state lost power too when around 27 of the towers on the main power grids were blown over so a real fun couple of days!

 

[Ogmios]

I could be totally wrong - you have been warned!
Isn't there some adjustment by way of the swing arm pivot bearings?
i.e; by screwing them 'in' or 'out' it moves the back end of the engine to the left or right (to align the shaft).
So, if you dont get the adjustment right the gearbox is too close to a frame rail and thus the arm can rub it.

As i say - i could be wrong, but i'm almost sure it's the same as a Guzzi in that respect.

 

[solidstate100]

I could be totally wrong - you have been warned!
Isn't there some adjustment by way of the swing arm pivot bearings?
i.e; by screwing them 'in' or 'out' it moves the back end of the engine to the left or right (to align the shaft).
So, if you dont get the adjustment right the gearbox is too close to a frame rail and thus the arm can rub it.

As i say - i could be wrong, but i'm almost sure it's the same as a Guzzi in that respect.

The engine (and therefore box) are mounted solidly in the frame. The swing arm pivot bearings adjust...........the swing arm!

 

[Ogmios]

The engine (and therefore box) are mounted solidly in the frame. The swing arm pivot bearings adjust...........the swing arm!

yeah, that would make sense really.



Unlike me. :


~~~
Carry on there

 

[fatbaldbob]

Well the mystery has been solved, took the bike to an Airhead guru who diagnosed the problem in an instant: I brought this as a bit of a project it was a badly built cafe racer and I am turning it into a flat tracker style thing. So whoever did the original build cocked it up, man who knows took one look and said there are no spacers between the engine and frame, should be one each side therefore the frame has been pulled in and left no clearance for the clutch arm. Could also be why I had trouble aligning the swinging arm.

Anyway, he recognised the bike as its very distinctive and turns out its been a piece of shit thats passed through many hands as its been nothing but trouble. He also knew the previous owner and a lot of the work that had and hadn't been done. First thing he looked at was wheels, he said it was famous as at some stage someone built a spoked rim to the hubs and the spokes were different lengths meaning the hub was not in the centre and the bike rode up and down like a clown bike. Fortunately that seems to have been sorted, I have also had to sort numerous other niggles but could not sort wobbly rear wheel and swing arm despite new bearings, now looks like a mis match of parts from different bikes, have now given up and left it with a man who knows, so hopefully i'll finally get a sorted decent bike. What annoys me is this bike was bought from a dealer as a sorted bike with a full mot, it was not safe to be ridden from the day it arrived; no brakes, floppy rear wheel and swing arm, oil leak from shaft output probably due to wiggly swing arm, loose steering head bearings, not charging and a duff battery. If he wasn't so far away I would have taken it back (brought on eBay and delivered via courier). So hopefully I will get it sorted soon, as man who knows is on the job, so looking forward to next summer.

 

[solidstate100]

Well, the thing is, at least you now know and can quantify its faults - its probably (touches wood) as bad as its gonna get, the only way is up from here!

No spacers! Jesus!

I dont doubt what you say as I myself have seen some true horrers that begger belief, but I am amazed it passed a (ahem "legal)" MOT........