Dusty,
I do the same as you. Engage on the throttle and disengage coasting. Been doing
it that way without any problems for many miles. Plus I love the surge when
that sucker kicks in.
My Laycock de Normanville service manual says the Three Speed Unit was designed
to provide instantaneous gear changes. Using the clutch defeats that design
intention IMHO.
Bud
Extreme Parts Racing (more than just a haircut)
71TR6 CC57365 (Good 6)
71 Spitfire MK IV Race Car #3
69 Spitfire MK III (back up FE engine/dinghy car)
93 Minnie Winnie Race Support Vehicle
77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)
On Feb 21, 2018, at 9:39 AM, dustin nicholson via Fot <fot at autox.team.net>
wrote:
> Reviving an old question. Do you clutch when shifting in or out of overdrive?
>
> I do not. I go in to overdrive while on the throttle and out of overdrive
> while off the throttle. It?s smooth that way so I don?t use the clutch.
>
> I don?t seem to be shortening the overdrive?s life span with this method.
> What do you do?
>
> And yes, avoid column mounted overdrive switch. I routinely hit it by
> accident on the Street TR6 when autocrossing which is really annoying since
> it has a J Type that?s wired to work in all four gears (also a bad idea as it
> takes forever for a J Type to build up pressure and engage overdrive in first
> gear... about a 5-10 second delay)
>
> Dusty Nicholson
> 1971 Spitfire FP #4
>
> Sent from my iPhone
>
> On Feb 21, 2018, at 8:24 AM, Barr, Scott via Fot <fot at autox.team.net>
> wrote:
>
>> Concur. I like the switch mounted on the shifter. Early on, my GT6 had the
>> stock column-mounted stalk switch. That was awful, as it was too easy to
>> hit it accidentally while steering. V. disruptive while cornering!
>>
>> Scott (B.)
>>
>> From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of Jack Wheeler
>> via Fot
>> Sent: Wednesday, February 21, 2018 6:54 AM
>> To: Greg Blake via Fot <fot at autox.team.net>
>> Subject: Re: [Fot] Adding type A OD
>>
>> For all of my 24 years of SCCA racing, I had the O/D switch mounted on my
>> shift lever. Very convenient, and allowed for faster shifting.
>>
>> Jack Wheeler
>>
>>
>> On Wednesday, February 21, 2018, 4:14:18 AM EST, Greg Blake via Fot <fot at
>> autox.team.net> wrote:
>>
>>
>> Looking for what Bosch relay I could substitute for the standard Lucas part
>> number. Originally is not an issue as this is under the dash in my race car.
>>
>> Also looking for advice on OD switch location for the race car. What do you
>> guys like to use? I was thinking a button on the steering wheel or on the
>> shifter must be convenient.
>>
>> Appreciate the ideas.
>>
>> Greg
>>
>> Sent from my iPhone
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