Author Topic: Primary case screws  (Read 542 times)

Offline Slash

  • Moving Up
  • **
  • Join Date: Oct 2020
  • Posts: 16
  • Karma: 0
Primary case screws
« on: 08.07. 2021 07:00 »
Can anyone tell me the lengths is the 15 screws on th s/a primary case? There are all sorts of odd ones in there at present.
1961 Tribsa

Offline BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 2544
  • Karma: 37
    • BSA National
Re: Primary case screws
« Reply #1 on: 08.07. 2021 07:16 »
Some where hidden on this site is a list of BSA/Triumph fasteners by part number
Hopefully Musky will remember where he hid it
Then find a copy of your parts list, probably one of them on here as well
Bike Beesa
Trevor

Offline Colsbeeza

  • Resident Legend
  • *****
  • Join Date: Aug 2015
  • Posts: 734
  • Karma: 5
Re: Primary case screws
« Reply #2 on: 08.07. 2021 09:36 »
Hi Slash,
Just what you want here:
             https://www.a7a10.net/forum/index.php?topic=13099.45
Col
1961 Golden Flash
Australia

Offline Minto

  • Resident Legend
  • *****
  • Join Date: Mar 2019
  • Posts: 732
  • Karma: 10
Re: Primary case screws
« Reply #3 on: 08.07. 2021 11:29 »
Not sure if this will be of any elp, it came with a new set of screws I purchased recently. It's for a plunger model, but mate help a little. Just make sure all the threads are cleaned out properly, the holes get full of all sorts of crap and prevent screws from reaching the proper depth.
52 A10 plunger
Aprilia RSVR

Offline Slymo

  • Valued Contributor
  • ****
  • Join Date: Jul 2018
  • Posts: 387
  • Karma: 3
Re: Primary case screws
« Reply #4 on: 12.07. 2021 02:09 »
I made a full set of fastenings for my SR and the Primary case ones were, other than the three 5/16 ones at the front, all the same length the differences being made up for by the depth of the countersunk holes on the cover at a guess I would say they were 2" long 1/4 Whitworth. The timing chest on the other hand was a real mixture. I'll measure one and get back to you.
NZ