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Thanks, Jonmac. Most likely Sweden mandated a move to zinc and away from
cadmium. Cadmium plating has some health and environmental risks that are
lessened with zinc plating.
On Wed, Apr 30, 2025 at 5:20=E2=80=AFPM John Macartney <johnbmacartney@gmx.=
com>
wrote:
> Don,
>
> It came about as I recall sometime in the late 60s when I was working for
> the company in London. What started 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 car=
s for
> Sweden. That allegedly 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 Swede=
n
> were built in Belgium. Later on, Sweden destined cars reverted to UK buil=
d
> and I think it all 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 departments because the fitters started moaning about not having
> appropriate sized sockets and spanner=E2=80=99s for oddball UK home marke=
t cars
> that found their way in with strange metric hardware. All in all, one
> humongous cock-up all 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-haire=
d
> lout 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 mov=
ed
> 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!
>
> Jonmac
>
> On 30 Apr 2025, at 23:34, Don Hiscock <don.hiscock@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 engi=
ne.
>
> 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=E2=80=AFPM John Macartney <johnbmacartney@gm=
x.com>
> wrote:
>
>> I have my doubts about the offending item having Whitworth ancestry.
>> While I=E2=80=99ve long been a Whitworth advocate and enthusiast (for pu=
rely
>> 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 th=
at
>> was market specific for European build. Needless to say, certain bits of
>> hardware went where they shouldn=E2=80=99t (or inadvertently wound up th=
ere). Might
>> this be a possible avenue to explore? Evaluate metric fine and coarse pi=
tch
>> threads.
>>
>> Jonmac
>> ** triumphs@autox.team.net **
>>
>> Donate: http://www.team.net/donate.html
>> Archive: http://www.team.net/pipermail/triumphs
>> http://www.team.net/archive
>>
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/triumphs/don.hiscock@gmail.com
>>
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Tha=
nks, Jonmac.=C2=A0 Most likely Sweden mandated a move to zinc and away from=
cadmium.=C2=A0 Cadmium plating has some health and environmental risks tha=
t are lessened with zinc plating.</div></div><br><div class=3D"gmail_quote =
gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Apr 30=
, 2025 at 5:20=E2=80=AFPM John Macartney <<a href=3D"mailto:johnbmacartn=
ey@gmx.com">johnbmacartney@gmx.com</a>> wrote:<br></div><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid r=
gb(204,204,204);padding-left:1ex"><div dir=3D"auto"><div dir=3D"ltr"></div>=
<div dir=3D"ltr">Don,</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">It c=
ame about as I recall sometime in the late 60s when I was working for the c=
ompany in London. What started 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 =
allegedly precipitated the Belgian assembly plant seeking to use metric fas=
teners in certain areas, though not all, in their build sequencing. Coventr=
y 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 Sweden were built in Belgiu=
m. Later on, Sweden destined cars reverted to UK build and I think it all d=
ied 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 departments b=
ecause the fitters started moaning about not having appropriate sized socke=
ts and spanner=E2=80=99s for oddball UK home market cars that found their w=
ay in with strange metric hardware. All in all, one humongous cock-up all r=
ound 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 uni=
versity with a Divinity degree and who wanted to make his mark and change t=
he 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!</div><div dir=3D"ltr"><br></=
div><div dir=3D"ltr">Jonmac</div><div dir=3D"ltr"><br>On 30 Apr 2025, at 23=
:34, Don Hiscock <<a href=3D"mailto:don.hiscock@gmail.com"; target=3D"_bl=
ank">don.hiscock@gmail.com</a>> wrote:<br><br></div><blockquote type=3D"=
cite"><div dir=3D"ltr"><div dir=3D"ltr"><div class=3D"gmail_default" style=
=3D"font-size:small">I'm not aware of any Whitworth threads installed b=
y S-T (at least on a sidescreen car).=C2=A0 There may be some Whitworth and=
BA threads on bought-in components, like SU carbs, Smiths, and possibly so=
me Lucas.=C2=A0 But I'll be shocked sh*tless to learn legit Withworth t=
hreads=C2=A0were used in a S-T engine.</div><div class=3D"gmail_default" st=
yle=3D"font-size:small"><br></div><div class=3D"gmail_default" style=3D"fon=
t-size:small">Jonmac, I'd never heard that metric and inch fasteners=C2=
=A0were used on the line at the same time depending on the end market for t=
he vehicle.=C2=A0 That's a fascinating bit of trivia, and one of the re=
asons we love having you here!=C2=A0 What time period are you talking about=
for that?=C2=A0 Maybe 1970s?</div></div><br><div class=3D"gmail_quote"><di=
v dir=3D"ltr" class=3D"gmail_attr">On Wed, Apr 30, 2025 at 4:27=E2=80=AFPM =
John Macartney <<a href=3D"mailto:johnbmacartney@gmx.com"; target=3D"_bla=
nk">johnbmacartney@gmx.com</a>> wrote:<br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,2=
04,204);padding-left:1ex">I have my doubts about the offending item having =
Whitworth ancestry. While I=E2=80=99ve long been a Whitworth advocate and e=
nthusiast (for purely patriotic reasons) I think it might be worth going do=
wn a metric route. There was a time when the factory briefly reverted to me=
tric hardware that was market specific for European build. Needless to say,=
certain bits of hardware went where they shouldn=E2=80=99t (or inadvertent=
ly wound up there). Might this be a possible avenue to explore? Evaluate me=
tric fine and coarse pitch threads.<br>
<br>
Jonmac<br>
** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumphs@au=
tox.team.net</a> **<br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"noreferr=
er" target=3D"_blank">http://www.team.net/pipermail/triumphs</a>=C2=A0 <a h=
ref=3D"http://www.team.net/archive"; rel=3D"noreferrer" target=3D"_blank">ht=
tp://www.team.net/archive</a><br>
<br>
hs/don.hiscock@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://autox=
.team.net/mailman/options/triumphs/don.hiscock@gmail.com</a><br>
</blockquote></div>
</div></blockquote></div></blockquote></div>
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