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I seem to recall that the starter bolt was unique.=C2=A0 Thanks for confirm=
ing that.=C2=A0=C2=A0
Dave=20
=20
On Wednesday, April 30, 2025 at 08:42:28 PM CDT, dave northrup <dave@ra=
nteer.com> wrote: =20
=20
I do believe that the float bowl top bolts and the bolt on the starter are =
Whitworth on the sidescreen cars
=20
=C2=A0
=20
From: Triumphs <triumphs-bounces@autox.team.net>On Behalf Of Don Hiscock
Sent: Wednesday, April 30, 2025 6:26 PM
To: John Macartney <johnbmacartney@gmx.com>
Cc: triumphs@autox.team.net
Subject: Re: [TR] Rocker feed screw.
=20
=C2=A0
=20
Thanks, Jonmac.=C2=A0 Most likely Sweden mandated a move to zinc and away f=
rom cadmium.=C2=A0 Cadmium plating has some health and environmental risks =
that are lessened with zinc plating.
=20
=C2=A0
=20
On Wed, Apr 30, 2025 at 5:20=E2=80=AFPM John Macartney <johnbmacartney@gmx.=
com> wrote:
=20
Don,
=20
=C2=A0
=20
It came about as I recall sometime in the late 60s when I was working for t=
he company in London. What started it (IIRC) was when there was an engineer=
ing change bulletin brought about by Sweden requiring cadmium plated fasten=
ers instead of zinc, or t=E2=80=99other way about on all cars for Sweden. T=
hat allegedly precipitated the Belgian assembly plant seeking to use metric=
fasteners in certain areas, though not all, in their build sequencing. Cov=
entry still built quite a lot of components that went into the kits for Bel=
gium and for a while, most if not all cars going to Sweden were built in Be=
lgium. Later on, Sweden destined cars reverted to UK build and I think it a=
ll died a very quick death and we reverted to imperial standard, apart from=
the cadmium and zinc issue which remained in place. However, it wasn=E2=80=
=99t plain sailing all the way in the Coventry and London service departmen=
ts because the fitters started moaning about not having appropriate sized s=
ockets and spanner=E2=80=99s for oddball UK home market cars that found the=
ir way in with strange metric hardware. All in all, one humongous cock-up a=
ll round and I don=E2=80=99t think anyone was sure who had suggested it all=
in the first place. Probably some acne ridden long-haired lout just out of=
university with a Divinity degree and who wanted to make his mark and chan=
ge the world. Quite likely the same person was later moved into Purchasing =
and decided to change the metallurgical spec for Stag cylinder heads - and =
that=E2=80=99s somewhere no-one needs to go, EVER!
=20
=C2=A0
=20
Jonmac
=20
On 30 Apr 2025, at 23:34, Don Hiscock <don.hiscock@gmail.com> wrote:
=20
I'm not aware of any Whitworth threads installed by S-T (at least on a side=
screen car).=C2=A0 There may be some Whitworth and BA threads on bought-in =
components, like SU carbs, Smiths, and possibly some Lucas.=C2=A0 But I'll =
be shocked sh*tless to learn legit Withworth threads=C2=A0were used in a S-=
T engine.
=20
=C2=A0
=20
Jonmac, I'd never heard that metric and inch fasteners=C2=A0were used on th=
e line at the same time depending on the end market for the vehicle.=C2=A0 =
That's a fascinating bit of trivia, and one of the reasons we love having y=
ou here!=C2=A0 What time period are you talking about for that?=C2=A0 Maybe=
1970s?
=20
=C2=A0
=20
On Wed, Apr 30, 2025 at 4:27=E2=80=AFPM John Macartney <johnbmacartney@gmx.=
com> wrote:
=20
I have my doubts about the offending item having Whitworth ancestry. While =
I=E2=80=99ve long been a Whitworth advocate and enthusiast (for purely patr=
iotic reasons) I think it might be worth going down a metric route. There w=
as a time when the factory briefly reverted to metric hardware that was mar=
ket specific for European build. Needless to say, certain bits of hardware =
went where they shouldn=E2=80=99t (or inadvertently wound up there). Might =
this be a possible avenue to explore? Evaluate metric fine and coarse pitch=
threads.
Jonmac
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs=C2=A0http://www.team.net/ar=
chive
ock@gmail.com
=20
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs=C2=A0 http://www.team.net/a=
rchive
sey@cs.com
=20
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<html><head></head><body><div class=3D"ydp4ac937a0yahoo-style-wrap" style=
=3D"font-family:Arial, Helvetica, sans-serif;font-size:16px;"><div><div dir=
=3D"ltr" data-setdir=3D"false">I seem to recall that the starter bolt was u=
nique. Thanks for confirming that. </div><div><br></div><d=
iv class=3D"ydp4ac937a0signature"><div style=3D"color: black; font-style: n=
ormal; font-size-adjust: none; font-weight: normal; font-stretch: normal; f=
ont-size: 12pt; line-height: normal; font-family: Arial, Helvetica, sans-se=
rif;"><div style=3D"color: black; font-style: normal; font-size-adjust: non=
e; font-weight: normal; font-stretch: normal; font-size: 12pt; line-height:=
normal; font-family: Arial, Helvetica, sans-serif;"><div><font size=3D"4">=
Dave <br></font></div><div><span style=3D"font-size:10.0pt;font-family:sans=
-serif;color:black;"><br></span></div><br></div></div></div></div>
<div><br></div><div><br></div>
=20
</div><div id=3D"ydpe91e013cyahoo_quoted_6991812458" class=3D"ydpe9=
1e013cyahoo_quoted"><div class=3D"ydpe91e013cyahoo-style-wrap" style=3D"fon=
t-family:Arial, Helvetica, sans-serif;font-size:16px;">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
=20
<div class=3D"ydpe91e013cquoted-text-header">
On Wednesday, April 30, 2025 at 08:42:28 PM CDT, da=
ve northrup <dave@ranteer.com> wrote:
</div>
</div><div style=3D"font-family:'Helvetica Neue', Helvetica=
, Arial, sans-serif;font-size:13px;color:#26282a;border-left: 1px solid #cc=
c;padding-left: 8px;margin: 0px 0px 0px 8px" class=3D"ydpe91e013cinline_rep=
ly_quote_container" data-split-quote-node=3D"true">
<div><br></div><div><br></div>
<div><div id=3D"ydpe91e013cyiv0239132177"><div>
<div class=3D"ydpe91e013cyiv0239132177WordSection1">
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"><span style=3D"font-size:11.=
0pt;font-family:sans-serif;">I do believe that the float bowl top bolts and=
the bolt on the starter are Whitworth on the sidescreen cars</span></p>=20
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"><span style=3D"font-size:11.=
0pt;font-family:sans-serif;"> </span></p>=20
<div id=3D"ydpe91e013cyiv0239132177yqt48286" class=3D"ydpe91e013cyiv0239132=
177yqt1507244442"><div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;=
padding:3.0pt 0in 0in 0in;">
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"><b><span style=3D"font-size:=
11.0pt;font-family:sans-serif;">From:</span></b><span style=3D"font-size:11=
.0pt;font-family:sans-serif;"> Triumphs <triumphs-bounces@autox.team.net=
>
<b>On Behalf Of </b>Don Hiscock<br clear=3D"none">
<b>Sent:</b> Wednesday, April 30, 2025 6:26 PM<br clear=3D"none">
<b>To:</b> John Macartney <johnbmacartney@gmx.com><br clear=3D"none">
<b>Cc:</b> triumphs@autox.team.net<br clear=3D"none">
<b>Subject:</b> Re: [TR] Rocker feed screw.</span></p>=20
</div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"> </p>=20
<div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">Thanks, Jonmac. Most l=
ikely Sweden mandated a move to zinc and away from cadmium. Cadmium p=
lating has some health and environmental risks that are lessened with zinc =
plating.</p>=20
</div>
</div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"> </p>=20
<div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">On Wed, Apr 30, 2025 at 5:20=
<span style=3D"font-family:sans-serif;">=E2=80=AF</span>PM John Macartney &=
lt;<a shape=3D"rect" href=3D"mailto:johnbmacartney@gmx.com"; rel=3D"nofollow=
" target=3D"_blank">johnbmacartney@gmx.com</a>> wrote:</p>=20
</div>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in;">
<div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">Don,</p>=20
</div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"> </p>=20
</div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">It came about as I recall so=
metime in the late 60s when I was working for the company in London. What s=
tarted it (IIRC) was when there was an engineering change bulletin brought =
about by Sweden requiring cadmium plated fasteners instead
of zinc, or t=E2=80=99other way about on all cars for Sweden. That alleged=
ly precipitated the Belgian assembly plant seeking to use metric fasteners =
in certain areas, though not all, in their build sequencing. Coventry still=
built quite a lot of components that went
into the kits for Belgium and for a while, most if not all cars going to S=
weden were built in Belgium. Later on, Sweden destined cars reverted to UK =
build and I think it all died a very quick death and we reverted to imperia=
l standard, apart from the cadmium
and zinc issue which remained in place. However, it wasn=E2=80=99t plain s=
ailing all the way in the Coventry and London service departments because t=
he fitters started moaning about not having appropriate sized sockets and s=
panner=E2=80=99s for oddball UK home market cars
that found their way in with strange metric hardware. All in all, one humo=
ngous cock-up all round and I don=E2=80=99t think anyone was sure who had s=
uggested it all in the first place. Probably some acne ridden long-haired l=
out just out of university with a Divinity
degree and who wanted to make his mark and change the world. Quite likely =
the same person was later moved into Purchasing and decided to change the m=
etallurgical spec for Stag cylinder heads - and that=E2=80=99s somewhere no=
-one needs to go, EVER!</p>=20
</div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"> </p>=20
</div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">Jonmac</p>=20
</div>
<div>
<p style=3D"margin-bottom:12.0pt;" class=3D"ydpe91e013cyiv0239132177MsoNorm=
al"><br clear=3D"none">
On 30 Apr 2025, at 23:34, Don Hiscock <<a shape=3D"rect" href=3D"mailto:=
don.hiscock@gmail.com" rel=3D"nofollow" target=3D"_blank">don.hiscock@gmail=
.com</a>> wrote:</p>=20
</div>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt;">
<div>
<div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">I'm not aware of any Whitwor=
th 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, S=
miths, and possibly some Lucas. But I'll be shocked sh*tless to
learn legit Withworth threads were used in a S-T engine.</p>=20
</div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"> </p>=20
</div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">Jonmac, I'd never heard that=
metric and inch fasteners were used on the line at the same time depe=
nding 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 per=
iod
are you talking about for that? Maybe 1970s?</p>=20
</div>
</div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal"> </p>=20
<div>
<div>
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">On Wed, Apr 30, 2025 at 4:27=
<span style=3D"font-family:sans-serif;">=E2=80=AF</span>PM John Macartney &=
lt;<a shape=3D"rect" href=3D"mailto:johnbmacartney@gmx.com"; rel=3D"nofollow=
" target=3D"_blank">johnbmacartney@gmx.com</a>> wrote:</p>=20
</div>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in;">
<p class=3D"ydpe91e013cyiv0239132177MsoNormal">I have my doubts about the o=
ffending item having Whitworth ancestry. While I=E2=80=99ve long been a Whi=
tworth advocate and enthusiast (for purely patriotic reasons) I think it mi=
ght be worth going down a metric route. There was a time when the
factory briefly reverted to metric hardware that was market specific for E=
uropean build. Needless to say, certain bits of hardware went where they sh=
ouldn=E2=80=99t (or inadvertently wound up there). Might this be a possible=
avenue to explore? Evaluate metric fine
and coarse pitch threads.<br clear=3D"none">
<br clear=3D"none">
Jonmac<br clear=3D"none">
** <a shape=3D"rect" href=3D"mailto:triumphs@autox.team.net"; rel=3D"nofollo=
w" target=3D"_blank">triumphs@autox.team.net</a> **<br clear=3D"none">
<br clear=3D"none">
ofollow" target=3D"_blank">http://www.team.net/donate.html</a><br clear=3D"=
none">
Archive: <a shape=3D"rect" href=3D"http://www.team.net/pipermail/triumphs"; =
rel=3D"nofollow" target=3D"_blank">http://www.team.net/pipermail/triumphs</=
a>
<a shape=3D"rect" href=3D"http://www.team.net/archive"; rel=3D"nofollow" tar=
get=3D"_blank">http://www.team.net/archive</a><br clear=3D"none">
<br clear=3D"none">
/options/triumphs/don.hiscock@gmail.com" rel=3D"nofollow" target=3D"_blank"=
>
http://autox.team.net/mailman/options/triumphs/don.hiscock@gmail.com</a></p=
>=20
</blockquote>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div></div>
</div>
</div></div><div class=3D"ydpe91e013cyqt1507244442" id=3D"ydpe91e013cyqt804=
55">** <a shape=3D"rect" href=3D"mailto:triumphs@autox.team.net"; rel=3D"nof=
ollow" target=3D"_blank">triumphs@autox.team.net</a> **<br clear=3D"none"><=
br clear=3D"none">Donate: <a shape=3D"rect" href=3D"http://www.team.net/don=
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