[Fot] Close ratio gears

[Mike Harmuth]

I have a close ratio set from a TR7 in a Spitfire 3 rail box. John at
Quantium makes them up. He has the input shaft cut down and hardened to
match whatever Triumph they're attached to. I'm using a 10 spline version
to fit a 1296 SJ engine but he makes them for GT6 and 1500's as well. Full
syncro, the only downside is, while close ratio rearing, 3rd gear isn't the
optimum range for the torque curve of my engine.
Rock solid, the only problem I had was when the diff chipped a tooth. It
locked up at speed and among other fun stuff twisted the driveshaft, broke
the tailpiece and bent the output shaft. The same gears are still in it, 15
years later.

mike h
[image: P1010697.JPG]
[image: tranny crack.jpg]

On Fri, Jan 20, 2023 at 12:03 PM Scott Janzen via Fot <fot at autox.team.net>
wrote:

> I use them, and have had occasion to replace them once due to clearance
> issues..
>
> On Jan 17, 2023, at 10:21 PM, DAVE HOGYE via Fot <fot at autox.team.net>
> wrote:
>
> I'm using one.
> Wouldn't mind having another one.  Should have bought one when they were
> available at $600 or what ever it was.
> It's difficult to understand the reasoning behind not letting a more
> modern and available option to be used.  Toyota, Miata, T5 or what ever.
> Had I known that to date, absolutely no tech inspector would ever even look
> at or question my gear box or if I was using rack and pinion steering, I
> may have gone that route in the first place.  I don't think these items
> make the car or driver go much faster and spoil the competition.  Some are
> using these already anyhow.  I've heard the argument many times, that
> basically the original option with over-drive had 7 gears.  Why wouldn't
> any 5-speed be allowed.  Thegridsaregettingsmaller.com.  I like to add
> .com. to anything.  And, I'mnotsleepingverywellthesedays.com.  That sort
> of thing...com.   Gdamn$85sycrorings.com.  Hehehe.com.
> Dave H.
>
>
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