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Frame Tapped Hole Sizes?
Posted: Wed Nov 08, 2017 2:09 pm
by blaat!
Anybody know what size tap "A" and "B" are supposed to be? Seems like an M10 for both, but mine are not in great shape so it is hard to tell. When I thread an M10 in it is very loose. It could just be corrosion and wear over the years though.
Thanks.
Jim
tapped.jpg
Re: Frame Tapped Hole Sizes?
Posted: Wed Nov 08, 2017 3:07 pm
by ranton_rambler
A and B are fine and normal pitch, but I can't remember which way round.
Re: Frame Tapped Hole Sizes?
Posted: Wed Nov 08, 2017 4:27 pm
by Eldert
both are 7 /16 unf .
Eldert
Re: Frame Tapped Hole Sizes?
Posted: Wed Nov 08, 2017 5:49 pm
by blaat!
WAIT, WHAT? They are not metric? That is madness. Thanks Eldert!
Re: Frame Tapped Hole Sizes?
Posted: Wed Nov 08, 2017 6:25 pm
by ducwiz
When I got my w/c 350D frame powder coated in 1982, I had to clean both threads for the footpeg after the processing. As I had no access to any "inched" taps then, I used a metric M11x1.25, which worked for me.
cheers Hans
Re: Frame Tapped Hole Sizes?
Posted: Thu Nov 23, 2017 11:10 am
by Vintmoto
Yes, those and the rear set mounting lugs are the 7/16 unf size. Story goes that the factory got a good deal on foot pegs in that size. Who knows for sure.