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dont forget, a f good part of the "syncro problem" in all these gearboxes
is worn out mating outer sleeves, gear tapers and dog teeth
the "big" gearbox in TR's, Salons & Stags all have much the same issue, and
you might find an even bigger application/market there
Most of the repro syncros ive seen for the "big" box are worse than worn
out factory ones. The most common problems ive enountereed are wrong brass
used for the backing, wrong cone angle and wrong dog teeth shape, with a
few even being badly out of round, so doomed to failure.
whilst ive not been doing such repairs commercially for a few years now, at
the end of my triumph gearbox building career, we were dismantling dozens
of old gearboxes just to raid 1st and 4th syncro rings and move them into
other boxes needing 2nd and 3rd. this was better than the new ones on offer
at the time from vendors like Moss, Rimmers etc and even some of the UK's
specialist transmission parts suppliers (basically, the people making them).
ive had a fair bit of recent experience with coated syncro rings in late
model Toyota gearboxes in race applications. . The factory coating has gone
thru several iterations , some of them not very good at all, so caution on
this front also.
our race Lotus has syncros supplied by a US firm
https://synchrotech-transmissions.com/carbon-synchros
keep us all informed please. US$75 is not unexpected or unreasonable for a
boutique order, if they actually work!. The Toyota gearbox
"carbon" syncros currenty retail for about US$45-$50 ea
Terry
On Sat, May 29, 2021 at 11:10 PM Rick Parent via Fot <fot@autox.team.net>
wrote:
> So, I am considering making a run of forged steel, heat treated Syncro's
> with a Carbon friction surface for the Spit / GT6 transmissions, you know
> parts that last more than one weekend and probably last a lifetime
> comparatively speaking. The questions is, is anyone interested? They will
> be expensive, probably $75ish each depending on the size of the order I can
> place. I should have some available for testing in the next 60 days or so.
>
> Secondarily, is there other Triumph transmissions that have syncro issues
> or is it just the Spitfires?
>
> If you are interested let me know how many you would like and I will start
> a list.
>
> Rick Parent
>
> "*Doing the right thing is always the right thing, regardless of
> consequences*"
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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> http://autox.team.net/mailman/options/fot/enquiries@roadandtrack.net.au
>
>
>
--000000000000a9844605c37e791c
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">dont=C2=A0forget, a f good part of the "syncro proble=
m" in all these gearboxes is worn out mating outer sleeves, gear taper=
s and dog teeth=C2=A0<div><br></div><div>the "big" gearbox in TR&=
#39;s, Salons & Stags all have much the same issue, and you might find =
an even bigger application/market there<div><br></div><div>Most of the repr=
o syncros ive seen for the "big" box are worse than worn out fact=
ory ones. The most common problems=C2=A0ive enountereed=C2=A0are wrong bras=
s used for the backing, wrong cone angle=C2=A0and wrong dog teeth shape, wi=
th a few even being badly out of round, so doomed to failure.=C2=A0</div><d=
iv><br></div><div>whilst=C2=A0ive not been doing such repairs commercially=
=C2=A0for a few years now, at the end of my triumph gearbox=C2=A0building c=
areer, we were dismantling dozens of old gearboxes just=C2=A0to raid 1st an=
d 4th syncro rings and move them into other boxes needing 2nd and 3rd. this=
was better than the new ones on offer at the time from vendors like Moss, =
Rimmers etc and even some of the UK's specialist transmission parts sup=
pliers (basically, the people making them).</div><div><br></div><div>ive ha=
d a fair bit of=C2=A0 recent experience=C2=A0with coated syncro rings in la=
te model Toyota gearboxes in race applications. . The factory=C2=A0coating =
has gone thru several iterations , some of them not very good at all, so ca=
ution on this front also.</div><div><br></div><div>our race Lotus has syncr=
os supplied by a US firm=C2=A0<a href=3D"https://synchrotech-transmissions.=
com/carbon-synchros">https://synchrotech-transmissions.com/carbon-synchros<=
/a>=C2=A0</div><div><br></div><div>keep us all informed please. US$75 is no=
t unexpected or unreasonable=C2=A0 for a boutique order, if they actually w=
ork!. The Toyota gearbox "carbon"=C2=A0syncros=C2=A0currenty=C2=
=A0retail for about US$45-$50 ea</div><div><br></div><div><div><div dir=3D"=
ltr" class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=
=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr">=
<div><div dir=3D"ltr"><div><div dir=3D"ltr"><div>Terry<br><br></div></div><=
/div></div></div></div></div></div></div></div></div></div></div></div><br>=
</div></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"=
gmail_attr">On Sat, May 29, 2021 at 11:10 PM Rick Parent via Fot <<a hre=
f=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>> wrote:<br></div>=
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style=3D"font-f=
amily:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px"=
><div dir=3D"ltr">So, I am considering making a run of forged steel, heat t=
reated Syncro's with a Carbon friction surface for the Spit / GT6 trans=
missions, you know parts that last more than one weekend and probably last =
a lifetime comparatively speaking. The questions is, is anyone interested? =
They will be expensive, probably $75ish each depending on the size of the o=
rder I can place. I should have some available for testing in the next 60 d=
ays or so.</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">Secondarily, is=
there other Triumph transmissions that have syncro issues or is it just th=
e Spitfires?</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">If you are in=
terested let me know how many you would like and I will start a list.</div>=
<div><br></div><div><div style=3D"font-family:Helvetica,Arial,sans-serif;fo=
nt-size:16px"><div dir=3D"ltr">Rick Parent</div><div dir=3D"ltr"><br></div>=
<div dir=3D"ltr">"<i>Doing the right thing is always the right thing, =
regardless of consequences</i>"</div><div dir=3D"ltr"><br></div></div>=
</div></div></div>_______________________________________________<br>
<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net<=
/a><br>
<br>
<a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" target=3D"_blank">=
http://www.fot-racing.com</a><br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" targe=
t=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http://www.team.n=
et/pipermail/fotUnsubscribe/Manage" rel=3D"noreferrer" target=3D"_blank">ht=
tp://www.team.net/pipermail/fot<br>
t/enquiries@roadandtrack.net.au" rel=3D"noreferrer" target=3D"_blank">http:=
//autox.team.net/mailman/options/fot/enquiries@roadandtrack.net.au</a><br>
<br>
<br>
</blockquote></div>
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_______________________________________________
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http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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