Hi Gang...my friend, Dennis Ortenburger, has written a new book on auto
racing in the 1960s.. Dennis has written several books, many specificaly on
Lotus To check out his new book at Xlibris.com go to
www.theredleatherdrivinggloves.com
Racer Bud..spitfire #21
----- Original Message -----
From: "Andrew Mace" <herald948@aol.com>
To: <rsrpsmith@gmail.com>; <N197TR4@cs.com>
Cc: <fot@autox.team.net>
Sent: Wednesday, November 26, 2008 1:36 PM
Subject: Re: [Fot] HELP! From Hawaii, and Happy Thankgiving
> -----Original Message-----
> From: robert smith <rsrpsmith@gmail.com>
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> ...I have a Triumph Spitfire that was Bob and Jimmy Coan's
> ex-race car, and I was doing very well with it at Hawaii's only race
> track, which is an autocross cross course near Hilo. Then, I broke the
> pinion gear, and maybe messed up a ring gear too. This car has an IRS
> set up, and the third member I need has a stamping on it that is
> either: FC16959, or EC16959. This is the stamping on the snout of the
> two piece differential. What I would like to do is either have my
> existing unit rebuilt, but with a 4:11 ratio for our little autocross
> track, or buy a unit that will fit and is already geared low, in the
> range of 4:11. ...
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> ==AM==
> Robert, FC would be correct, and that would be the original prefix for an
> early Spitfire. Originally, they were equipped with a 4.11:1, as were most
> Heralds (same diff.), but 4.55:1 gears were fairly common for racing
> applications (my old autocrosser, an ex-GP SCCA racer, has a welded 4.55),
> so it's likely(?) that your car has the 4.55 now. Anyway, again, the 4.11
> is about the most common gearset for those cars, and it shouldn't be too
> difficult to get a decent used set. (They seem to be unavailable new.)
>
> Canley Classics in the UK does list a "competition" 4.11:1 crown wheel and
> pinion; I'll assume that fits the later, beefier MkIV/1500 differential.
> And the 1972 model year "Federal" Spitfire MkIV came with a 4.11:1 diff,
> which might be the same. That would have the "FK" prefix as opposed to the
> more common "FH" prefix (3.89:1). You'd be able to use any later
> differential with only changes to the flanges on the driveshaft and axle
> shafts. U-joints are the same as are chassis mounts. (Only four stud holes
> on the later Spitfire cases to hold the swing spring, but that shouldn't
> be a problem, either.)
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> --Andy Mace
>
> *Mrs Irrelevant: Oh, is it a jet?
> *Man: Well, no ... It's not so much of a jet, it's more your, er, Triumph
> Herald engine with wings.
> -- Cut-price Airlines Sketch, Monty Python's Flying Circus (22)
>
> Triumph 10 / Herald / Sports 6 vehicle consultant for The Vintage Triumph
> Register
>
> Check out the North American Triumph Sports 6 (Vitesse 6) and Triumph
> Herald Database at its new URL:<http://triumph-herald.us>
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