[TR] O/D safety switch

[David Porter]

No,
  this particular installation relies on an external contact by the gear 
shift lever itself. Not an internal position of the 3rd/4th shift rod. 
The usual Lucas pressure switch is mounted on the side at the very 
rearmost part of the extension assembly, not on the top in the more or 
less center section... this allows only using O/D in 4th gear.. better 
than nothing I guess..
Dave
On 8/31/2014 1:01 PM, Jeff Scarbrough wrote:
> 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 at 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/
>>
>> ** triumphs at autox.team.net **
>>
>> Donate: http://www.team.net/donate.html
>> Archive: http://www.team.net/archive
>> Forums: http://www.team.net/forums
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/triumphs/fishplate@gmail.com
>

-- 
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 
87107 505-352-1378 Go HERE: my world www.porterbikes.com/