B40 wheel offsets

Started by chaz, 14 Dec, 2020, 10:52

Previous topic - Next topic

chaz

just had the hubs powder coated and the new spokes and rims have arrived,
unfortunately didnt take the offset measurement.
its a 1965 B40 ex flat tracker running 18" rims but 7" full width B40 and C15 hubs.
can anyone tel me the offsets so as I can get themrebuilt before christmas. thanks

JulianS

The full width hub B40 wheels are built centre of rim to centre of spoke flange, according to my notes.

chaz

thanks Julian, I would have thought there would be a chart somewhere on the internet after all this time. I had a look through my book of B series notes . wheels were taken apart before the offset could be checked.

Pete A10

When I did mine I seem to recall an offset of 3/16 inch. I got it from the Rupert Ratio "Everything but the engine" book. Unfortunately I gave the book to the guy that bought the B40 when I'd finished it so I can't check. Does anybody else on the forum have the Rupert Ratio book to check

Crazy Mike

Just checked RR Everything but the Engine.
The offset for 7" full width front hub is 3/16th "
Offset for C15 full width rear hub is 1/8 "
Hope this helps.