[TR] Rocker feed screw.

[Don Hiscock]

Are you referring to the Tenax studs on the windscreen frame, Dave?  I'd
have guessed those were BA threaded.

On Wed, Apr 30, 2025 at 8:35 PM DAVID MASSEY <dave1massey at cs.com> wrote:

> There are Whitworth fasteners used on the TR3 windshield.  I bought a set
> of Whitworth taps and dies when I restored my windscreen for that reason.
> But, no, that is not the engine.
>
> Dave
>
>
>
>
> On Wednesday, April 30, 2025 at 05:34:25 PM CDT, Don Hiscock <
> don.hiscock at gmail.com> wrote:
>
>
> I'm not aware of any Whitworth threads installed by S-T (at least on a
> sidescreen car).  There may be some Whitworth and BA threads on bought-in
> components, like SU carbs, Smiths, and possibly some Lucas.  But I'll be
> shocked sh*tless to learn legit Withworth threads were used in a S-T engine.
>
> Jonmac, I'd never heard that metric and inch fasteners were used on the
> line at the same time depending on the end market for the vehicle.  That's
> a fascinating bit of trivia, and one of the reasons we love having you
> here!  What time period are you talking about for that?  Maybe 1970s?
>
> On Wed, Apr 30, 2025 at 4:27 PM John Macartney <johnbmacartney at gmx.com>
> wrote:
>
> I have my doubts about the offending item having Whitworth ancestry. While
> I’ve long been a Whitworth advocate and enthusiast (for purely patriotic
> reasons) I think it might be worth going down a metric route. There was a
> time when the factory briefly reverted to metric hardware that was market
> specific for European build. Needless to say, certain bits of hardware went
> where they shouldn’t (or inadvertently wound up there). Might this be a
> possible avenue to explore? Evaluate metric fine and coarse pitch threads.
>
> Jonmac
>
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