[TR] Triumphs Digest, Vol 18, Issue 45
DAVID MASSEY
dave1massey at cs.com
Thu May 1 08:14:22 MDT 2025
Cool. Thanks.
Dave
On Wednesday, April 30, 2025 at 10:52:11 PM CDT, John Finlayson <john_finlayson at telus.net> wrote:
Have you tried British Tools Fasteners? I have not purchased anything from them but have reviewed their website. This is their help page.
British Fastener Specs
On Wed, Apr 30, 2025 at 11:51 AM <triumphs-request at autox.team.net> wrote:
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Today's Topics:
1. Re: TR] Rocker Shaft locating screw (Roger Elliott)
2. Re: TR] Rocker Shaft locating screw (DAVID MASSEY)
3. Re: TR] Rocker Shaft locating screw (Roger Elliott)
4. Re: TR] Rocker Shaft locating screw (DAVID MASSEY)
----------------------------------------------------------------------
Message: 1
Date: Tue, 29 Apr 2025 13:10:10 -0500
From: Roger Elliott <elliottr at rmi.net>
To: triumphs at autox.team.net
Subject: Re: [TR] TR] Rocker Shaft locating screw
Message-ID: <a92baf9c-88d6-4b9d-a0ff-e9fcb1ec26dd at rmi.net>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
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>
> To: 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
>
> **triumphs at autox.team.net **
>
> Donate:http://www.team.net/donate.html
> Archive:http://www.team.net/pipermail/triumphs http://www.team.net/archive
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Message: 2
Date: Tue, 29 Apr 2025 23:34:48 +0000 (UTC)
From: DAVID MASSEY <dave1massey at cs.com>
To: "triumphs at autox.team.net" <triumphs at autox.team.net>, Roger
Elliott <elliottr at rmi.net>
Subject: Re: [TR] TR] Rocker Shaft locating screw
Message-ID: <1214400213.3372950.1745969688851 at mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"
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>
To:?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
** triumphs at autox.team.net **
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Message: 3
Date: Tue, 29 Apr 2025 18:48:48 -0500
From: Roger Elliott <elliottr at rmi.net>
To: "triumphs at autox.team.net" <triumphs at autox.team.net>
Subject: Re: [TR] TR] Rocker Shaft locating screw
Message-ID: <71e4b6e4-b150-42e1-bd0d-07f6dac066ac at rmi.net>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
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
>
> **triumphs at autox.team.net <mailto:triumphs at autox.team.net> **
>
> Donate:http://www.team.net/donate.html <http://www.team.net/donate.html>
> Archive:http://www.team.net/pipermail/triumphs <http://www.team.net/pipermail/triumphs> http://www.team.net/archive <http://www.team.net/archive>
>
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> ** triumphs at autox.team.net **
>
> Donate: http://www.team.net/donate.html
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Message: 4
Date: Wed, 30 Apr 2025 11:58:45 +0000 (UTC)
From: DAVID MASSEY <dave1massey at cs.com>
To: "triumphs at autox.team.net" <triumphs at autox.team.net>, Roger
Elliott <elliottr at rmi.net>
Subject: Re: [TR] TR] Rocker Shaft locating screw
Message-ID: <467697119.3508541.1746014325551 at mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"
Wikipedia has a fairly comprehensive page on Whitworth bolts
https://en.wikipedia.org/wiki/British_Standard_Whitworth
It looks like it might be a 7/32 which is between M5 and M6.? Good luck finding one of those.
Moss has them and Rimmer Brothers have them (part no 104859).? I suspect there is one old bloke in the Lake District who still has the tooling and is making them in his retirement.? Such was the nature of the British Auto Industry in the early years after the war.
Seriously, I'll bet Rimmer contracted a large quantity (1,000?) be produced and sold half of them to Moss.
But these are hex head rather than Pozidrive.? I have only a passing familiarity with machine shop operations but I suspect that making the hex head version is much easier to make using an NC lathe and hexagonal feed stock.? Making a Pozidrive (or even Philips) would require a stamping operation to form the head.? If you insist on Pozidrive maybe you can arrange a swap with someone who has a Pozidrive screw and is willing to use the hex head.
Dave
On Tuesday, April 29, 2025 at 07:30:40 PM CDT, Roger Elliott <elliottr at rmi.net> wrote:
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
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