[TR] TR] Rocker Shaft locating screw

[Roger Elliott]

Thanks Dave,

I have a couple of the screws. (though mine have a Pozidriv head 
instead.  The problem is I have 2 rocker shafts that were tapped for the 
wrong size. So, I am trying to figure out if I could tap them to the 
right size.

What I said on a previous post was wrong.  I went back to a hardware 
store and the locating screw slid right into the M6x1 tester with out 
having to turn it.  So it is smaller than that. It would not go into a M5x.8

I suspect you are right about it being a Whitworth.

Thanks,
Roger

On 4/29/25 18:34, DAVID MASSEY wrote:
> Moss lists these as
>
> https://mossmotors.com/323-215-screw-shaft-locating
>
> It may be whitworth or something.
>
> Dave
>
>
>
>
> On Tuesday, April 29, 2025 at 02:34:18 PM CDT, Roger Elliott 
> <elliottr at rmi.net> wrote:
>
>
> The locating screw is smaller than 1/4 inch.  Hard to tell that in the 
> picture below.  More like a #12 screw.
>
> The locating screw seems to screw into a M6x1 sizer at the hardware 
> store.  But strangely a M6x1 bolt won's screw into the hole.
>
> It appears to be 27tpi according to my gauge.
>
> Looks very close to m5x.8
>
> Thanks,
> Roger
>
> On 4/28/25 21:28, aribert neumann wrote:
> The screw is 1/4 inch.  I don't remember if fine thread: 28 tpi or 
> coarse thread:20 tpi   For grins, I would get a known M6x1 fastener 
> and see if it threads in.
>
>
>
>
> --------- Forwarded message ----------
> From: Roger Elliott <elliottr at rmi.net <mailto:elliottr at rmi.net>>
> To: triumphs at autox.team.net <mailto:triumphs at autox.team.net>
> Cc:
> Bcc:
> Date: Sun, 27 Apr 2025 18:20:35 -0500
> Subject: [TR] Rocker Shaft locating screw
> Anyone know what size the rocker shaft locating screw is? I just
> received a rocker shaft that the screw will not go into.  Checked with
> drill bits.  An 11/64 drill bit would go into old rocker shafts easily,
> but not into the new one.
>
> Shouldn't make any difference, but this is for a GT6 mark 1.
>
> Thanks,
> Roger Elliott
>
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