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Thread size for original Paddy Hopkirk pedal

Posted: Tue Jun 15, 2021 10:52 am
by Andrew1967
Need to get some new threaded screws and nuts for the original PH throttle pedal that is going back into HOY.

Any idea on the thread size ? I'm presuming BA ?

Could get something from my local fasteners (probably metric) but not passing that way any time soon and might be easier just to get from the usual internet site.

Re: Thread size for original Paddy Hopkirk pedal

Posted: Tue Jun 15, 2021 11:16 am
by Polarsilver
Andrew, i think your correct re BA .. also get nylock nuts to back up the thread as they can strip within that horse shoe type backplate .

Re: Thread size for original Paddy Hopkirk pedal

Posted: Tue Jun 15, 2021 11:34 am
by Andrew1967
Hmm, there's no thread there anyway Norman and there were nuts on the old screws that I end up shearing off as sized solid. Nylocs a good idea anyway.

Wondering what size BA ?

Re: Thread size for original Paddy Hopkirk pedal

Posted: Tue Jun 15, 2021 12:14 pm
by Peter Laidler
I'd say 4BA at a guess and scaling-up. If you're stuck, come back to me Andy

Re: Thread size for original Paddy Hopkirk pedal

Posted: Tue Jun 15, 2021 1:27 pm
by Andrew1967
Will do Peter. :)

I’d say it’s max 2mm diameter, probably only 1.6 or 1/16 so probably 3 or 4 BA, having found some info on the net

Re: Thread size for original Paddy Hopkirk pedal

Posted: Tue Jun 15, 2021 3:05 pm
by Peter Laidler
If it is 4BA then the long imperial rounded/machine head bolts used to fit switches and plugs to the sockets in the wall are 4BA Andy. I've got a zillion nuts

Re: Thread size for original Paddy Hopkirk pedal

Posted: Tue Jun 15, 2021 3:29 pm
by Andrew1967
Must be 3BA then Peter, as I've been there and tried that :lol:

Re: Thread size for original Paddy Hopkirk pedal

Posted: Tue Jun 15, 2021 10:49 pm
by seandoyle
Don’t forget to inform your insurance company as since I fitted one,the car feels noticeably faster LOL