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Re: C/R Gear Boxes

To: fot@autox.team.net
Subject: Re: C/R Gear Boxes
From: Herald948@aol.com
Date: Wed, 6 Dec 2000 12:00:40 EST
In a message dated 12/05/2000 8:48:22 PM Eastern Standard Time, rgk@flash.net 
writes:

[...snip...]

>  1972 PCS Spitfire Mk4
>  1 - 2.65
>  2 - 1.78
>  3 - 1.25
>  4 - 1.00
>  Alternate
>  1 - 2.93
>  2 - 1.78
>  3 - 1.25
>  4 - 1.00
>  Alternate
>  1 - 3.75
>  2 - 2.16
>  3 - 1.39
>  4 - 1.00
>  Final drives: 3.89, 3.20, 4.10, 4.55,  4.87

I find the above list curious in that listed are the "old" C/R gearset with 
2.93 first gear (ala Vitesse 1600) and the newer GT6/Vitesse 2L gearset (2.65 
first), as well as the old "stock" Spitfire/Herald 1200 gearset (3.75 first), 
but no mention of the "stock" Spitfire MkIV gearset with its 3.51 
(synchro-)first gear. Wonder why, as it was introduced with the 1971 model 
MkIV?

Also...
  
>  1972 PCS GT6 , GT6+, GT6 MK3
>  Alternate
>  1 - 1.80
>  2 - 1.49
>  3 - 1.20
>  4 - 1.00
[...]

Just out of curiosity, was this a "competition-only" gearset; if not, where 
did this gearset come from? I've never seen any such ratios listed for any 
normal production Triumphs.

Kas, Mike C., Ted S. -- any thoughts on either question?

--Andy Mace  

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