Rear fork and chain lubricator

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Hi

How much movement is normal in the horizontal side direction for the rear wheel (and fork),when it stands on the center stand (when you push it)?
I see this is a result of the rubber isolatics that the whole assembly is mounted on ,but i can push my rear wheel at least 1 cm each way ,and wonder if that is normal :?:

I also wonder if there is an automatic chain lubricator on my 72 roadster. The thing is that i have read that there should be one ,but i cant find any. Is the reason why my chain is so oily just oil-leaks :D hehe.
 
:!: Depends what you mean by normal. It's certainly not correct but lots of them get that bad !

As a guide, if the movement feels "spongy" and rubbery then it is probably isolastics, but if it goes "clunk- clunk" then more likely swing arm pivot or loose engine mounts.

The amount of movement you should have depends on how strong you are. I have seen 6' (1m.80) Ministry testers grab the rear wheels of well set up Commandos and seen them move more than I would have thought possible.

I think you need to do some dismantling and investigation. The front Iso is the easiest place to start.

The chain oiler is fed from a "tee" on the return feed to the oil tank. Many of us have blanked them off due to the problem you describe.
 
wear in the swing arm bearings or the gearbox cradle tube will cause movement. Mine is all in good nick & some small amount of spongy movement can be detected, but 1 cm seems a lot. If s/a spindle tube is worn oversize spindles can be bought, but on mine I made 2 clamps to crush the tube on to the swinging arm spindle. This uses surprisingly little force & makes a safer location than the 1/4 inch bolt in the centre. My tube wasnt worn, but i didnt want to ride the bike with the spindle fixed with just that piddly little bolt!. If you want more details let me know
 
Sounds like a lot of movement to me!! If you do find out that it is swingarm rather than isolastics, I would recommend modifying your swingarm by welding nuts on to the cradle and threading in a bolt on both sides to stabilize (INOA fix??) or using lockring collars (easier). I used the latter and it worked great. My bike handles much better than before and I probably only had 2-3 mm of movement before I started. But first you probably should disassemble the swingarm to see if the bushings look excessively worn. I bought the lockring collars from Heinz Kegler in New Mexico. Very slick. Cost around 60 bucks. Please mail e offlist if you would like his coordinates.


fireflake purple said:
Hi

How much movement is normal in the horizontal side direction for the rear wheel (and fork),when it stands on the center stand (when you push it)?
I see this is a result of the rubber isolatics that the whole assembly is mounted on ,but i can push my rear wheel at least 1 cm each way ,and wonder if that is normal :?:

I also wonder if there is an automatic chain lubricator on my 72 roadster. The thing is that i have read that there should be one ,but i cant find any. Is the reason why my chain is so oily just oil-leaks :D hehe.
 
It looks to me that it is the isolatics in the front of the engine that is moving when i push and shakes the wheel and swing arm.- the engine is moving ,and i have not detected any movement in the pivot .

Anyway i think i have to take a closer look on it. That can maybe be dangerous to drive with ? ,of course it depends on how bad it is.
 
If you say there is no movement in the (swinging arm?) pivot then I would think the front (and probably the rear) isolastic mounting is badly in need of re-shimming? The clearance should be set to 0.010" (0.25mm) or slightly less for better handling.
 
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