Post by: MikeT on August 09, 2022, 05:06:50 PM
Post by: Wittsend on August 09, 2022, 05:20:19 PM
auction: #122857259827Try model engineering supplies.
:RHD
Post by: g6anz on August 09, 2022, 06:23:32 PM
Post by: Wittsend on August 09, 2022, 06:31:16 PM
:stars
Post by: autorover1 on August 09, 2022, 10:25:28 PM
Post by: Craig T on August 10, 2022, 10:28:32 AM
Craig.
Post by: g6anz on August 10, 2022, 11:02:54 AM
http://www.classicregulator.com/electronic-regulators-old/terminal-screws-14-bsf-headed#:~:text=These%20are%20the%20grub%20screws,have%20a%201.4%22%20BSF%20thread.
Post by: Rustandoil on August 10, 2022, 11:58:43 AM
https://www.spaldingfasteners.co.uk/1-4-26-x-3-8-brass-bsf-cup-point-grub-screws/
Post by: autorover1 on August 10, 2022, 12:45:43 PM
If they are a course thread are they BSW rather than BSF?I was thinking of course compared with BA threads
Craig.
Post by: discosport152 on August 11, 2022, 07:22:51 PM
Post by: Wittsend on August 11, 2022, 08:17:41 PM
We need to see what the OP actually has.
A bit of research on eBay shows that over the years Lucas changed the form of the terminal screws :stars
And so this is a very hard question to answer without seeing the regulator in question.
Post by: MikeT on August 12, 2022, 07:05:23 AM
Post by: Marky Harvey on August 13, 2022, 07:38:53 AM
Post by: Herald1360 on August 13, 2022, 02:50:56 PM
BSW, BSF even BSP...
Could BSB be British Standard Brass- apparently another pipe thread (though not apparently a British Standard on at all :thud
Post by: Betsy1969 on August 14, 2022, 10:40:59 AM
Post by: Herald1360 on August 14, 2022, 02:02:29 PM
Post by: g6anz on August 14, 2022, 04:05:12 PM
Post by: Wittsend on August 14, 2022, 05:15:05 PM
All I can suggest is that the Topic Starter phones up the Distributor Doctor, describes what he has and maybe the DD can pop some in the post.
:RHD
Post by: Supercal2007 on August 14, 2022, 05:34:54 PM
BSB??? :starsBRITISH STANDARD BRASS, essentially the same as BSC. All 26tpi regardless of diameter.
BSW, BSF even BSP...
Could BSB be British Standard Brass- apparently another pipe thread (though not apparently a British Standard on at all :thud
I dont have a control box to identify it for you.
Post by: Oilierthanthou on August 14, 2022, 06:12:26 PM
The definitive answer is, it's quarter inch BSF.
I also removed one from my 1937 Austin, it's the same.
I also checked them against my BA tap and die sets, and my British Cycle set, and my BSW set, and my metric set. It does not match any of those. I also have 26TPI BSB set, but there is no point in checking that, as BSB and BSF standards coincide and would be identical at quarter inch. But BSB was used for tubing, not engineering components.
Post by: Marky Harvey on August 14, 2022, 06:29:30 PM
Post by: Tom on August 14, 2022, 08:02:41 PM
I have just removed one from my 1959 model to measure it.
The definitive answer is, it's quarter inch BSF.
:o Thank you!
Post by: whitehillbilly64 on August 15, 2022, 10:10:21 PM
whitehillbilly
Post by: diffwhine on August 16, 2022, 12:11:13 AM
I can't easily check, as I'm in Albania! :tiphat
Post by: Rustandoil on August 16, 2022, 05:43:40 AM
^^^At a guess, I'd say they were too small, but thinking on the same lines, the grub screws in a standard round electrical junction box might be right.
That's a good shout :o