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Dual high trany installed backwords.
Posted: July 31st, 2015, 4:47 pm
by KimVanOrder
So, on an old doodle bug, gramps had a transmission mounted behind the regular transmission to speed it up. Can an AA Dual High tranny be mounted in backwards to make it an Overdrive?
KVO
Re: Dual high trany installed backwords.
Posted: July 31st, 2015, 7:18 pm
by Stakebed
yes and no... they do work, for awhile but run VERY hot and will eventually kill themselves.
Re: Dual high trany installed backwords.
Posted: July 31st, 2015, 7:32 pm
by macswoods
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Re: Dual high trany installed backwords.
Posted: July 31st, 2015, 8:03 pm
by Stakebed
well the "dual high" in its standard config is a 1:1 ratio but when engauged its a 2:1 ratio using planetary gears. Planetary gears just dont like to be ran the other way around. plus they are also noisy due to planetary nature.
Re: Dual high trany installed backwords.
Posted: August 1st, 2015, 5:07 pm
by KimVanOrder
Thanks for the info. I guess it is back to the drawing board for me. Thanks again.
KVO
Re: Dual high trany installed backwords.
Posted: August 1st, 2015, 10:23 pm
by Stakebed
I thought someone mentioned an overdrive used in old old old (like 1960's) volvos could be adapted... but to me that seems rarer than the warford setup...
Re: Dual high trany installed backwords.
Posted: August 1st, 2015, 10:53 pm
by spectria
Stakebed wrote:I thought someone mentioned an overdrive used in old old old (like 1960's) volvos could be adapted... but to me that seems rarer than the warford setup...
That Volvo overdrive was a great source of income in my shop (needing repairs frequently)...