Wednesday 30 June 2021

Magneto refurb...

 Quite a while ago, I refurbished the magneto drive (K2F) but like the rest of the bike, I am dubious as to how well it was done, so another strip down was done - you guessed it - a few bits missing and the end float was wrong. New bits are now ordered and I await their delivery. One thing that is not available at the moment is a points set (brass plate variety) but I have a spare. I did manage to get a decent spark out of it, however!! 



Monday 28 June 2021

And it's - off we go!!

Well, it's been a while but I have now progressed to getting the workshop mainly sorted and now I'm turning my attentions to the 3T.

When we moved, the gearbox was behaving strangely and the kickstart didn't seem to work. When the bike was put up onto my lift, I then found I could not even turn the bike over, so I have decided to start again and dismantle the gearbox. (I may even do the same to the engine!!)

When I eventually got the cover plate off, the kickstart spring was broken and it was not engaging in gears.

I think that the box was not indexing correctly. Once dismantled, I noticed that one camplate roller was very rough and if looked like the index was wrong. In fact the fork selector and roller were blued and very rough.....a spare to the rescue again!

The photo below shows the mounting lugs for the speedo drive. There is a gear above the sprocket (hidden) that drives the speedo.



Photo below shows the use of a vertical bar in the vice to support the gearbox - much better than trying to use blocks of wood etc.




These are the components for the kickstart ratchet - Somewhere in the garage is the washer on the right which decided to fly off the bench!! Good job I had a spare.


The camplate seems to have been using a pointed plunger. The older ones are more like a chisel point. I will use that type - see photo below.






Now the gearbox is back together and the indexing seems to be working much better with all gears being selected correctly. A new kickstart spring has also been installed. I will put gasket sealant on the mating faces and then it is ready to go back into the bike.