My 1952 VH500 has petrol tank bolts 5/16" X 18tpi. To me this seems to be a BSW thread, which seems odd. The bike has not been used since 1960 and has very very few signs of being "messed about with" and it does not look like a bodge. I checked Drags lists but actual thread type isn't...

Thanks,
I'm getting my original mag back with bearing failure repaired next week. Its had a full rewind etc. recently, so hopefully it will perform Ok, but I think I start a saving up campaign for a B-TH for next spring.

An old thread, but I'm interested as to peoples experience of the B-TH (Alton) magneto. For my '52 VH. Has the "2 bolt hole" fixing proved to be a problem? Just having had bearing failure on the Lucas M01 I'm a bit disillusioned. I must have had about 10 bikes over the years with Lucas mag...

Pointy screw is for rear chain lubrication.

Good news one the quality of Draganfly's fork tubes ! I spoke to Colin about the poor quality of ones I had recieved. He apologised and said they "have several suppliers" and he would see if he could get a better pair. He phoned me to tell me he had suceeded, saying something to the effect...

Mine is not swing arm, but plunger frame.
The oil seal is accessible by removing clutch, primary casings and gearbox sprocket.

I thought of that, but didn't have a spare bit of chain. And I'm sure I would have needed something stronger than that bit of box section.
The sprocket and its nut were a couple who had been together 69 years and clearly wanted to make it to a 70th anniversary. It was a shame to dissapoint them.

Partly following the plea for more use of the forum, but I was going to anyway! Stripping down the primary drive of my ''52 VH500 to do the gearbox output oil seal, all went well until I got to the gearbox sprocket nut. (A primary chain with no detatchable link in it ? Could it be the original?) I m...

Rugged? One way of describing it.
Crudely made is the other when you can actually feel it.

pm sent.