Need help to identify overdrive trans

[Jwilli]

1930 Cabriolet has overdrive that I can't identify. I need your help. Markings appear to be A10-1D. No electrical connections. Has push - pull button, also has shift lever. Previous owner is deceased. Info says that od trans was installed in 2004, no other info. Appears to be a Borg Warner. All help is appreciated. Thanks in advance.

[Jwilli]

It appears that I also need help in posting pictures right side up.

[1931flathead]

looked good before I posted it

[Jwilli]

Originally Posted by 1931flathead

looked good before I posted it

Mine looked good before I posted it too.

[scrapiron]

As I understand it, the lever is in/out OD,,,the push/pull is for reverse in main, as reverse won't work in overdrive.

[Jwilli]

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The push pull is to activate OD. Pushed in the OD is activated, Pulled out reverse works. Now what is the lever for? Does it have high and low range?

[Gary WA]

Ok!

[Jwilli]

Originally Posted by Gary WA

Ok!

Thanks Gary. How did you do that?

[Gary WA]

Originally Posted by Jwilli

Thanks Gary. How did you do that?

Save the pics to comp,then turn right way and reload to barn using Go Advanced.

[Keith True]

There are really two controls to operate that overdrive.That knob runs the lockout,and freewheeling.That other lever is used in place of a solenoid.If you show a picture of the other side of that unit with the controls we can point out which control does what.

[Kurt in NJ]

it looks like a borg warner, the overdrive needs to be 'locked out" for reverse , use of reverse in overdrive will damage the unit ----it also probably needs it's own oil seperate from trans,rear

[Jwilli]

It does have plugs for the oil. There is No solenoid. I just got this A running, it had been stored in a heated basement for the last 7 years. Had to de-rust the gas tank. Built a dead leg below the gas valve, raised the intake apx 1 inch above bottom of tank. This arrangement is working well. I do have 3 other A's none of which have overdrive. Have done lots of search, have not found this trans.

[michael a]

So is that a good overdrive unit and yes I would like pictures of the operating side of the unit and can you still get them

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[Bob C]

Like was mentioned above it looks like a Borg Warner overdrive, they were
used behind a lot of different transmissions.

Bob

[Jwilli]

Operating side pictures. This side has 1-7 over H6 markings.

[Jwilli]

Again pictures are upside down.

[Gary WA]

ok!

[Keith True]

The cable is the lockout,the OD needs to be locked out to use reverse.Somebody has replaced the solenoid with that square post setup.There is a cam affair inside that pushes the rod like a solenoid would.Yours just happens to be run by a lever.I had the same design,but it was run by a cable.That is actually what activates the overdrive,not that cable.Tom W.just sent me some pictures of one he has,it is a conversion like yours,and like one I used to have.I understood these to all be 33%over,but I really have no idea if that is fact or just most seem the be that ratio.I used one a few years ago,but I really didn't like the high ratio.Mostly I didn't like the cable shift on mine.The one I had,Toms,and yours all have the same workmanship on that post activator.Same looking welds and gussets too.It makes me think they were from the same builder but I can't seem to find out who that was.

[Jwilli]

Thanks everyone, we are making progress.

[petew]

I believe what you have there is a modified Borg Warner R10 overdrive.
It’s the same overdrive that is found in 1949-1951 Fords and several other cars of the era.
The solenoid and the governor appear to have been done away with . Those were the components that would normally cause trouble , without them it should work forever !
It uses GL1 gear oil that is still available from NAPA to work properly .