The 20 amps on the A-type is only momentary. As soon as the lever moves,
contacts in the solenoid open, and the draw drops to roughly 2 amps, same
as the J type.
On Wednesday, April 14, 1999 8:50 PM, Bob Hutton [SMTP:bob@calc.com.au]
wrote:
>
> Peter,
>
> The operation of the solenoids is different between the 'A' and 'J'
types.
> The 'A' type activates a lever and draws about 20 amps whereas the 'J'
type
> operates only an oil valve and draws only 2 amps approx.
>
> Bob Hutton
>
> -----Original Message-----
> From: owner-triumphs@autox.team.net
> [mailto:owner-triumphs@autox.team.net]On Behalf Of Peter Wilson
> Sent: Thursday, 15 April 1999 1:38
> To: triumphs@autox.team.net
> Cc: tgordon@saginaw-city.k12.mi.us
> Subject: Re: TR6 O/D question
>
>
>
> Hi Tony,
>
>
> I have installed a hybrid O/D in my '69 TR6, with bits of saloon, Rover
and
> others. The saloon gearbox is basically the same as the TR except for
gear
> ratios (wider in the saloon) and input spline (I think 1" for saloons and
> 1.125" for TRs.
>
>
> The A-type overdrive is also basically the same, except for the
> number/strength of springs inside and perhaps the accumulator diameter
and
> spring. Others may have more data on this, but I know that you can uprate
> the saloon O/D to TR specs by swapping a few internal parts. Running the
> standard saloon O/D internals in a TR would probably work, but you would
get
> a much slower O/D engagement and a possible risk of slippage.
>
>
> The only external difference is the one you have noticed - the saloon has
a
> horizontal solenoid mount (and sometimes a protective box, whilst the TR
has
> a vertical mount (and sometimes stone shield).
>
>
> Although the solenoid and its function are identical, I understand that
the
> saloon orientation will not fit in a TR chassis. You will need to
purchase a
> TR side cover/solenoid mount to rectify this difference.
>
>
> I hope this helps,
>
>
> Peter Wilson (peter.wilson@vsl.com.au)
>
> Adelaide, South Australia
>
>
> >Has anyone had any experience with fitting a saloon O/D g/box to a TR6?
>
> >(mine is a 72 with the early or pre-Stag-type gearbox). Are there any
>
> >significant differences in clutch type/splines, throw out bearing,
>
> >crankshaft bush?
>
> >
>
> >Also, the gearbox does not look like the A-type in either the TRF cat.
or
>
> >the Bentley Workshop manual. It has the correct shape for the A-type,
but
>
> >the solenoid location and mounting is not the same. The solenoid is in
the
>
> >correct place (RH side of g/box looking aft). I did notice a message
from
>
> >a few days ago that indicated that the solenoid can be encased - well,
this
>
> >one certainly is, but is not vertical but inclined to the rear of the
g/box
>
> >and is housed in a rectangular housing. Don't know if that presents any
>
> >further problems ....?
>
>
>
>
> Peter Wilson (Peter.Wilson@vsl.com.au)
>
> Manager - Mechanical Systems Group
>
> <bold>VISION ABELL PTY LTD
>
> </bold>======================================
>
> <smaller><smaller>Second Avenue, Technology Park,
>
> Mawson Lakes, South Australia 5095
>
> Tel: +61 8 8300 4400
>
> Fax: +61 8 8349 7420
>
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>
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