Well it's another stinker today, so instead of doing a pie run I wandered outside to play with the T500. I'd installed the new speedo yesterday, but for some reason the speedo drive wasn't working? I jacked it up and dropped the front wheel and looked at everything. I'd rotate the wheel out of the forks, and the speedo drive would turn, but when I reinstalled it, it didn't work? Weird.
Then a small explosion went off in my tiny brain. There is a chrome dress cover for what should be a spacer that seats between the head of the axle and the RHS bearing, but there was no spacer there. As you all should know, I bought this bike in pieces, and while it had a front wheel attached to the forks, the spacer had long gone. I took some measurements, and machined up a spacer, did a test fit and made an adjustment by trimming 1.5mm off the OA length, did another test fit, tightened the axle down, and this time, the speedo drive turned freely. I screwed in the speedo cable and spun the wheel, and yep, this time the cable was turning freely. Sweet!
I also installed the NOS front brake cable. When I compared them side to side I was confused because the overall length were identical, but then I realised that the outer sheath on the repro cable was 20mm too short, making the cable 20mm too long, which explained why the brand new cable was at max adjustment. I installed the NOS cable and called it good.
I thought it a good opportunity to swap in the 13T NOS OEM front sprocket that Alan found on Ebay for me, to replace the 15T sprocket that came with the chain and sprocket set. To remove the sprocket cover to get to the sprocket you have to remove the left footpeg assembly, then the kick starter, the shifter pedal, and the sprocket cover, which is a bit of a chore. I did a comparison between the two sprockets:
T500 Saturday 22 Jan 2022 by
Terry Prendergast, on Flickr
Quite a difference. And quite a difference to ride too. I first adjusted a bit more slack out of the clutch to reduce the clutch dragging (it's still there, but not as bad) then started it on the first kick (gotta love that) and took off. The difference was immediate, no more slipping the clutch to take off, just take off like you do on any other bike.
I did an extended ride around the block (not too far, until I get it registered I don't want to draw too much attention to myself, which is difficult on a noisy smoke belching two stroke) and was happy that the speedo worked perfectly, and of course as I've only just built the engine the odometer will actually reflect my mileage since the engine build. All I need to do now before I take it in for it's Roadworthy inspection is replace both tyres and tubes.
T500 Saturday 22 Jan 2022 1 by
Terry Prendergast, on Flickr