Knocked this up to remove the freewheel gears off the mountain bike. Couldn’t be bothered waiting 5 days for a delivery. Rough as a badgers arse, but it did the job and will probably never be used again.
I found dowels that were a good fit in either side of the swingarm pivot bolt and the rear axle. Each end is a different size. Then used a 600mm rule to measure the overall distance from end to end of the dowels. Then subtract 1/2 diameter of each side's dowels. My wheel is set exactly by the graduations and the measures were exactly the same. I think some effort was put into jigging the swingarms during fabrication.
I didn't think it is such an issue with modern bikes and alloy swingarm. The early stuff with steel arms were quite away out .. or so I'm told .
Must just be mine but we are only talking a couple of mill here ,I have mesured the marks from the end of the swing arm and from just in front of the axle where the adjusters are they are definitely out by 2 mm the guy with the marking punch must of had a bad day
it's less than 0.5deg out but still I'm surprised. To fabricate those pieces is clever stuff, welding order etc. so it comes out straight.
I did adjust the chain today and used the swing arm to axle method and the steel straight edge method, both spot on together so this is why I think the marks are out ,,the chain and sprockets line up too ,,,,, I've never had uneven tyre ware or handling problems
