The overdrive on the Ford was made by Borg Warner I suppose, the BMC saloons
powered by the C engine (Austin Wolseley Princess and Morris) had these
overdrives as options. Why they didn't use the Laycock variety (as Austin
Healey) I dont know, might have something to do with car weight.
Sven Ordell
-----Ursprungligt meddelande-----
Fren: owner-healeys@autox.team.net [mailto:owner-healeys@autox.team.net] Fvr
Dave & M
Skickat: den 25 augusti 2006 20:35
Till: John Sims
Kopia: 'John Miller'; healeys@autox.team.net
Dmne: Re: OD Concern----revised
Wow, you guys go way back, how ancient are you anyway? Anybody remember
the "Columbia" two speed vacuum shifted rear axles in the early Fords?
Very long ago I put a V8 engine in a 1940 Chevy. The transmission was a
1948 Packard with overdrive, had a 1938 floor shift top adapted to it.
As you say, the manual pull knob was used to lock out the OD, otherwise
the transmission would free wheel below OD cut in speeds. The free
wheeling actually provided for clutchless shifting below OD cut in speed
if desired. Manual lockout was used to provide compression braking at
lower speeds if desired.
Kick down from OD to direct (passing gear) was available anytime the
throttle was floored.
Packard, Nash, 50's Fords & a few others had this OD arrangement.
Dave Russell
BN2
John Sims wrote:
> And, I remember that mine was fun to drive!
>
> John Sims, BN6 Aberdeen, NJ
>
> www.healey6.com
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