Join Date: Nov 2014
Location: Beaverton, Oregon, United States
Repairing an aluminum swingarm
Looking to get some insight from the more experienced people here.
Today I had a sprocket nut back off of the carrier stud on my rear wheel. It machined a nice gouge into the swingarm that happens to line up with the weld where the box section meets the adjuster block. Pictures are worth thousands of words, see the attachments.
One of the local smaller custom motorcycle shops said they could weld it, but they were afraid of structural integrity and the need to re-anneal the swingarm after the repair. There are a few shops in town that may be able to do the annealing, or he thought possibly baking it in an oven at 425F for a few hours and letting it naturally cool might also suffice.
My questions are
1. Structural integrity after the repair, should I find a different swingarm?
2. Is annealing necessary, and can I do it in my oven?
3. If I bake my swingarm to anneal it, will it burn off the finish on there?
4. When I break the chain, do I do it at the master link and replace the master? Or do I do it opposite the master and add a second master link?
1994 Ducati 900 SS/CR
It's Italian. If I can get it to start, it'll win.