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The situation is. I am doing an A65 rebuild. I Have it mostly together and have just come back to it after about a year :) Engine is in, electrics mostly done and wheels fitted.
My problem is the chain, visibly, does not run true and in fact touches the casing on the return (lower) run. The frame is as true as I can measure and the engine fits fine, all the through bolts and and plates are a good fit so I dont see that being a problem. The Swinging arm does not show any sign of damage. I already have the longer Half spindle fitted so I can't reasonably move the wheel further to the right to line the chain up.
Question is have I got completely the wrong Swinging arm. My model has the brake drum on the right opposite side to the chain. Was the difference between what I have and the Quick Release arm so radically different. Or do I have an arm off a completely different model. A7/10 for instance. I cant remember what they were like Because the arm fits at its pivot perfectly I dont suspect any damage at that point.
So, once again, your advice is sought. Just for once lord let it be something simple. But I suspect its the wrong arm.
Mike 8) 8) 8)
Hi Mike,
Can you post a photo of your swinging arm/sprocket?
Dave.
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I'll try to do that as soon as I can get it back on the bench.
Mike 8) 8) 8) 8)
:) :) :) :)
Well this is quite surprising. Bike on the bench and a couple of us with torches. The inside of the casing has had a weld repair at some time Un noticed by me at any stage of rebuild. The weld finish is excellent and smooth, however it is a couple of mm thicker than the original casing, enuff so for the chain to just touch. A 1mm spacer was enuff to run the chain straight and I hope it will continue to run clear. Glad I didn't do anything radical like pulling bits apart.
Sometimes it all works out.
Mike 8) 8) 8)