[Fot] TR type A OD

[Jack Wheeler]

 I always used the earlier A-Type O/D (with the large accumulator) in my race car.  Raced for 24 seasons and never had an O/D mechanical failure.  It is a verry stout unit.  I'm not sure the change took place with the introduction of the 4-Synchro box.  I think some of the large accumulator overdrives I used came out of early TR-4's.  I'm pretty sure all of the TR-4A's had the later design with the smaller accumulator.

Jack

    On Monday, December 25, 2017, 2:25:29 PM EST, Larry Young via Fot <fot at autox.team.net> wrote:  
 
 There should be a difference between 3 synchro and 4 synchro box 
mainshafts. The earlier boxes used the large accumulator which is more 
desirable for racing.
  - Larry

On 12/24/2017 7:47 AM, van.mulders.marcel--- via Fot wrote:
> I believe there are 2 types of the mainshaft for an A-type O/D gearbox of the TR6. The change is somewhere in the 1972 model en
> later on a J-type was fitted. Part no of the latest A-type main shaft is UKC1933. It has the smaller tip to the inputshaft bearing.
> Marcel
> ----- Oorspronkelijk bericht -----
> Van: "fot" <fot at autox.team.net>
> Aan: "fot" <fot at autox.team.net>, "Greg Blake" <gblake58tr3 at icloud.com>
> Verzonden: Zondag 24 december 2017 13:59:08
> Onderwerp: Re: [Fot] TR type A OD
>
> Greg,
>
> You're not using the excellent article on the A type overdrive found on the Buckeye Triumphs technical site.
>
> Ed Woods
>> On December 23, 2017 at 10:50 PM Greg Blake via Fot <fot at autox.team.net> wrote:
>>
>>
>> I am attempting to rebuild an A type OD over the holiday weekend. I tried to separate the rear OD housing from the main OD housing after removing the rear output flange and speedo drive. Once i removed the 6 nuts and washers, I had to tap the studs with a brass drift to get the rear housing to separate from the main housing. But now i can't get the rear OD housing to come completely off. I can get about a 1/4" gap between the rear and main housing but it won't come all the way off. What am I doing wrong?
>>
>> Thanks. Greg
>>
>> Sent from my iPhone
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