rngdng wrote:
Jim, as I understand it, the 65 and 66 models were 50cc, going to 65 in 1967. Mine doesn't have a date code on the frame as it should but we identified it by some of it's parts.... My engine was a disaster. I thought I would never get the cylinder off, and I've seen a worse crank. I had to replace every piece of it.
Lane
Lane, I think you are right, I measured the bore and stroke from the marks in the cylinder. It is oversquare with a bore of 1.53" and a stroke of about 2.88" making the displacement 44.6cc. VIN number on the engine and the VIN stamped on the frame is 66S18389 indicating 1966 S1 (not sure what the S1 designates?) and 8389 the production number? This thing is stock to the bone, going to just clean up the paint and wax the body work, but the motor is getting the full treatment. As questioned earlier about the gas cap, these are premix bikes and the gas cap has a measuring cup on the reverse to add 3oz of 10w40! to the tank.
I was lucky, the motor was in very good shape except for bearings and seals. Would be cool to get Jim Hobbs to build an expansion chamber for it, but the chrome on this one is still quite good......
Once I get the cases cleaned, will be heading to the shop to get them and the head bead blasted before re-assembly. Working to source some new rims and replace the original Pirelli tires, spokes are re-useable. Hubs will need bead blasting.
UPDATE......
Got the cases stripped for cleaning. New bearings and seals on order. Stay tuned......
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