Re: [ihc] Re: ihc-digest V7 #487

[bearbvd@xxxxxxxxxxxxxx (Greg Hermann)]

At 7:51 PM 5/25/04, salmineo@domain.elided wrote:

If anyone gets hold of that adapter plate, the most gentlemanly thing to do
would be to take it to a CNC equipped machine shop that has a 'tracer' head
for one of their machines. Have them map the thing with the tracer--from
that data they would be able to make as many more replicas of it as might
be wanted.

Greg

>Those overdrive units were used in all of those, and in Willys and
>Ramblers and Studebakers too (and maybe Packards), in the 1940s to as late
>as the 1970s.  If a car or pickup had overdrive in those years, chances
>are that it used the BW unit.  They were known as the Borg-Warner R-10 and
>R-11.  They looked identical, but the R-11 was supposed to be a
>heavier-duty version.  Having seen both, I will be damned if I can tell
>the two apart, except for the casting number.  Parts are pretty
>interchangeable.  Those numbers will help you find the breakdown and
>service information in the old Motor Age and Mitchell's Manuals/National
>Service Data books.  The D-20 units I have seen had a newer aftermarket
>aluminum adaptor that allowed the fitment of one of the passenger car or
>pickup units to the transfer case.  Control consists of a floor switch to
>disengage the unit when the driver wanted to pass and floored it.  There
>was also a dash mounted cable knob that engaged and disengaged the unit.
>Some cars like Rambler had instead of the floor switch a switch on the
>shifter that let the driver choose to turn it off.  It said "Overtake" if
>I remember correctly.  If you find one, I see no reason not to use it.
>They look plenty strong for most uses.  Like anything, they will break if
>abused.  I think they would be a nice upgrade on the older IHC pickups
>that used the BW transmissions, and a Ford unit should bolt right on.  I
>know of a fellow that had one of the D-20 units he was trying to sell last
>year.  If anyone is serious about wanting to get one, I can get his number
>if you need it.  He had two, but only one aluminum adaptor.  The whole
>mess was up for grabs for someone with $500, and he was pretty resolute.
>He may still have it.  Someone with some ability could machine a duplicate
>or two of the adaptor, and make the other unit usable, with a spare for
>the event that you come across another one at a swap meet.  I have some
>other info on these, including a wiring diagram for retrofitting into your
>rig, if you want it. The older NSD manuals show several variations on the
>wiring for these, which gives you a little more choice in control.
>-Colin Rush
>
>Date: Tue, 25 May 2004 09:01:32 -0700
>From: "Jim Grammer" <jgrammer@domain.elided>
>Subject: RE: [ihc] RE: Herm buddy
>
>>-----Original Message-----
>>From: Ed Sohm [mailto:idaemes@domain.elided]
>>Sent: Tuesday, May 25, 2004 8:27 AM
>>To: 'Greg Hermann'; 'Jim Grammer'; ihc@domain.elided
>>Subject: RE: [ihc] RE: Herm buddy
>
>>I'm going to tell what I have heard about these D20 OD units.  I have no
>>direct knowledge of them but was told they come off of older Chevy's.
>>My dad had a rusted out '58 Biscayne with a 3 speed overdrive.  When I
>>asked if this was the correct OD, I was told that it was.  I would be
>>promptly cut out of the will if I thought about stealing parts off of
>>Dad's "first car" so I will never know.  I would still have to
>find the
>>kit that is needed to put it on the back end of a D20.  It is cable
>>operated BTW.  Grain of salt and all.  Just something I heard on the BB
>>when the BB only had ~30 posts a day.
>
>>Ed
>
>Chubbies, Ferds, Studes, you name it. Even IH's(T-2 IIRC) :)
>
>The o/d unit is basically the same for them all, fitment details prolly vary
>some depending on which tranny they're mated to. I expect a 'spud shaft'
>adapter was used to adapt to the D20, just not sure if there are pertinent
>differences between the Ferd and Scout D20 requiring different parts for the
>o/d install. Pretty good rundown here:
>http://www.hydratech.com/pctc/Public_Documents/bwwiring.pdf
>
>More pics of the guts:
>http://www.hydratech.com/pctc/Public_Documents/bwrebuild.pdf
>
>The cable locks out the shift function of the o/d unit, which with OEM
>wiring was automatic(governer controlled solenoid). Hence the term
>'electric' overdrive.
>
>I like them enough to have amassed 4 T-2's, naturally none of them are in
>trucks at the moment ;(
>
>Jim
>
>
>
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