Lately our local rides have had some fairly extreme tricky tight turns in them and I relented to fashion and used the clutch on my hot rod
TY175 in these turns. It didn't go well because that particular clutch self-engages. As soon as it starts to drive, it just hooks up solid. It was such a pain I went and got on a different old bike (with a nice clutch) to finish the ride.So, soon after the first of the tight section rides I pulled the clutch mechanism and the clutch apart looking for things to make it engage more nicely. I didn't find much wrong so reassembled everything nicely greased and tried lighter gearbox oil. It was a bit better but the next ride had some equally severe turns in the sections and after a couple of engine stalls, I vowed to myself to have another go at improving things.
This leads to my photos from the next attempt to improve the clutch action.
For people not familiar, this is a TY175 clutch release camshaft. One edge of the flat area pushes on the end of the clutch pushrod. The rounded pushrod end eventually wears a dent/pock in the face of the flat bit. I suspect that having a dent/pock there may affect the action of the clutch.
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So this story is about getting rid of the dent/pock.
About 30 years ago, I removed a really severe dent/pock from it by welding up the dent and then restoring the profile. That seemed to work for a long while but it obviously needed another treatment. This time I thought that instead of building it up with weld, instead I'd remove metal until the dent/pock disappeared. For this I used a hand stone/oil stone, moving it in little circles. It takes ages to remove metal this way but at least it stays nice and flat if you take enough care as you go.
The second photo shows what one looks like before getting attention and the one that I'm almost finished stoning.
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There are actually two dent/pocks visible. This is because you can adjust the camshaft up and down to get the cable pulling at 90 degrees and this one has been used in two positions.
