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Re: [TR] O/D safety switch

To: David Porter <frogeye@porterscustom.com>
Subject: Re: [TR] O/D safety switch
From: Jeff Scarbrough <fishplate@gmail.com>
Date: Sun, 31 Aug 2014 15:01:50 -0400
Cc: "Triumphs \(triumphs@autox.team.net\)" <triumphs@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: triumphs@autox.team.net
References: <C11A4D073AAF8042BECE2B3D862F4EF820AAB549@MP-DUP-MBX-02.AD.QUEENSU.CA> <540332B7.4060104@porterscustom.com>
Not being intimate with the GT6 transmission, but assuming that it
works the same as the Spitfire and TR6 gearboxes, the switch should
operate via a notch in the shaft, or a notch in the fork.  As I
understand it, the switch dropping into the notch locks out the signal
to the solenoid.  The OD switch on the column/shift knob remains
engaged, and so shifting between gears keeps the OD working  except
for the brief period when the lever passes through neutral where the
switch plunger drops into the notch..

So, the position of the switch mounting shouldn't affect whether or
not it works in 3rd gear.  I'm guessing you have some other problem,
but what it is is still a mystery.

Jeff Scarbrough
Corrosion Acres, Ga.

On Sun, Aug 31, 2014 at 10:35 AM, David Porter
<frogeye@porterscustom.com> wrote:
> Listers,
>  My recently acquired GT6+ is equipped with an O/D (yea!) but the safety
> switch mounted at the distal end of the gearbox extension only allows for
> 4th gear operation. I saw a picture of a safety switch mounted more or less
> over the forks.. question is/are is this a MK3 improvement or is it a
> extension assembly from a TR other car that just happens to interchange?
> Dave in Abq.
>
> --
> Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 87107
> 505-352-1378 Go HERE: my world www.porterbikes.com/
>
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