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I didn't spin but I did lock up one rear wheel with a Detroit Locker
diff. Large bang, it didn't like that. Detroit Locker was OK, but the
one way clutch / roller arrangement in the OD broke into multiple
pieces. What's funny is that it still worked perfectly. I had some
debris fall out later when I changed the tranny oil so I took the OD
apart and the inner part of the one way roller assembly came out in 3 or
4 pieces.
Cheers, Tony
On 12/24/2019 12:49 PM, David Gott via Fot wrote:
> Speaking of spinning the OD backwards, which it wonâ??t do, what happens
> if you spin the car while overdrive is engaged? Â Probably my biggest
> concern for running one of these in a race car... Â I was thinking Iâ??d
> use it on track and maybe autocross, but I think that is ill advised
> now that I bring up that question. Â Has anyone ever spun and rolled
> backwards, with OD engaged?
>
> Dave G
>
>
> Sent from Yahoo Mail for iPhone
> <https://overview.mail.yahoo.com/?.src=iOS>
>
> On Tuesday, December 24, 2019, 12:47 PM, Greg Blake
> <gblake58tr3@icloud.com> wrote:
>
> If this is for a race car, you might consider shiming the
> accumulator spring to get closer to 500psi.
>
> Sent from my iPhone
>
>> On Dec 24, 2019, at 10:51 AM, David Gott via Fot
>> <fot@autox.team.net> wrote:
>>
>>  I was able to test my overdrive by chucking a 1/2â?? electric
>> drill on the input shaft and turning the whole transmission.
>> Â (Make sure to spin the right direction!). Pretty sure I used 4th
>> gear. Â I was able to determine that my OD pressure is at 350
>> psi, so Iâ??ll have to shim the spring I guess.
>>
>> Secondary question; the OD seemed to stick on me, but I did not
>> have a load on the output flange, due to being on the bench; Iâ??m
>> assuming this might be an issue? Â Or would a load coax the OD to
>> releasing as appropriate?
>>
>> Hopefully I donâ??t hijack your thread too much!
>>
>> Thanks,
>> Dave Gott
>> 62 TR4 (â??Aâ?? type on the bench)
>>
>> Sent from Yahoo Mail for iPhone
>> <https://overview.mail.yahoo.com/?.src=iOS>
>>
>> On Tuesday, December 24, 2019, 11:25 AM, Jack Wheeler via Fot
>> <fot@autox.team.net> wrote:
>>
>> I have tested overdrives like this for years. My drive motor
>> only spins in one direction, which makes sure the output
>> shaft only spins in the same direction the shaft would be
>> spinning when the car is driven in a forward speed.
>> Therefore, I don't know what would happen if you spun it in
>> the wrong direction.
>>
>> Jack
>>
>> On Monday, December 23, 2019, 10:05:53 PM EST, Glenn Franco
>> via Fot <fot@autox.team.net> wrote:
>>
>>
>> Merry Christmas
>> Quick Question
>> A friend of mine started testing his A-Type Overdrives by
>> back spinning the output flange (to the prop shaft) with a
>> pulley and electric motor.
>> I've seen this done by spinning the transmission INPUT shaft
>> with a pulley and electric motor but not from the rear.
>> Any chance of damaging the overdrive since the overrunning
>> clutch is only going to spin in the one direction, can it
>> lock up the overdrive?
>> Thanks in advance
>> Glenn
>>
>> _______________________________________________
>>
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>>
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>
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>
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<p>I didn't spin but I did lock up one rear wheel with a Detroit
Locker diff. Large bang, it didn't like that. Detroit Locker was
OK, but the one way clutch / roller arrangement in the OD broke
into multiple pieces. What's funny is that it still worked
perfectly. I had some debris fall out later when I changed the
tranny oil so I took the OD apart and the inner part of the one
way roller assembly came out in 3 or 4 pieces.</p>
<p>Cheers, Tony<br>
</p>
<div class="moz-cite-prefix">On 12/24/2019 12:49 PM, David Gott via
Fot wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1979045858.2094816.1577213393868@mail.yahoo.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--[if gte mso
9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]-->
Speaking of spinning the OD backwards, which it wonâ??t do, what
happens if you spin the car while overdrive is engaged? Â Probably
my biggest concern for running one of these in a race car... Â I
was thinking Iâ??d use it on track and maybe autocross, but I think
that is ill advised now that I bring up that question. Â Has
anyone ever spun and rolled backwards, with OD engaged?
<div><br>
</div>
<div>Dave G<br>
<br>
<br>
<a href="https://overview.mail.yahoo.com/?.src=iOS";
moz-do-not-send="true">Sent from Yahoo Mail for iPhone</a><br>
<br>
<p class="yahoo-quoted-begin" style="font-size: 15px; color:
#715FFA; padding-top: 15px; margin-top: 0">On Tuesday,
December 24, 2019, 12:47 PM, Greg Blake
<a class="moz-txt-link-rfc2396E"
href="mailto:gblake58tr3@icloud.com";><gblake58tr3@icloud.com></a>
wrote:</p>
<blockquote class="iosymail">
<div id="yiv0957845862">
<div>If this is for a race car, you might consider shiming
the accumulator spring to get closer to 500psi. <br
clear="none">
<br clear="none">
<div dir="ltr">Sent from my iPhone</div>
<div dir="ltr"><br clear="none">
<blockquote type="cite">On Dec 24, 2019, at 10:51 AM,
David Gott via Fot <a class="moz-txt-link-rfc2396E"
href="mailto:fot@autox.team.net";><fot@autox.team.net></a> wrote:<br
clear="none">
<br clear="none">
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
I was able to test my overdrive by chucking a 1/2â??
electric drill on the input shaft and turning the
whole transmission. Â (Make sure to spin the right
direction!). Pretty sure I used 4th gear. Â I was able
to determine that my OD pressure is at 350 psi, so
Iâ??ll have to shim the spring I guess.
<div><br clear="none">
</div>
<div>Secondary question; the OD seemed to stick on me,
but I did not have a load on the output flange, due
to being on the bench; Iâ??m assuming this might be an
issue? Â Or would a load coax the OD to releasing as
appropriate?</div>
<div><br clear="none">
</div>
<div>Hopefully I donâ??t hijack your thread too much!</div>
<div><br clear="none">
</div>
<div>Thanks,</div>
<div>Dave Gott<br clear="none">
62 TR4 (â??Aâ?? type on the bench)<br clear="none">
<br clear="none">
<a rel="nofollow" shape="rect" target="_blank"
href="https://overview.mail.yahoo.com/?.src=iOS";
moz-do-not-send="true">Sent from Yahoo Mail for
iPhone</a><br clear="none">
<br clear="none">
<p class="yiv0957845862yahoo-quoted-begin"
style="font-size:15px;color:#715FFA;padding-top:15px;margin-top:0;">On
Tuesday, December 24, 2019, 11:25 AM, Jack Wheeler
via Fot <a class="moz-txt-link-rfc2396E"
href="mailto:fot@autox.team.net";><fot@autox.team.net></a> wrote:</p>
<blockquote class="yiv0957845862iosymail">
<div id="yiv0957845862">
<div>
<div
class="yiv0957845862ydp7dbf0fe6yahoo-style-wrap"
style="font-family:Helvetica Neue,
Helvetica, Arial,
sans-serif;font-size:13px;">
<div dir="ltr">I have tested overdrives like
this for years. My drive motor only spins
in one direction, which makes sure the
output shaft only spins in the same
direction the shaft would be spinning when
the car is driven in a forward speed.Â
Therefore, I don't know what would happen
if you spun it in the wrong direction.</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">Jack<br clear="none">
</div>
<div><br clear="none">
</div>
</div>
<div
class="yiv0957845862ydpfd023d29yahoo_quoted"
id="yiv0957845862ydpfd023d29yahoo_quoted_7545444271">
<div style="font-family:'Helvetica Neue',
Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;">
<div class="yiv0957845862yqt9559972606"
id="yiv0957845862yqt71890">
<div> On Monday, December 23, 2019,
10:05:53 PM EST, Glenn Franco via Fot
<a class="moz-txt-link-rfc2396E"
href="mailto:fot@autox.team.net";><fot@autox.team.net></a> wrote: </div>
<div><br clear="none">
</div>
<div><br clear="none">
</div>
<div>
<div
id="yiv0957845862ydpfd023d29yiv2459643629">
<div dir="ltr">
<div>Merry Christmas</div>
<div>Quick Question</div>
<div>A friend of mine started
testing his A-Type Overdrives by
back spinning the output flange
(to the prop shaft) with a
pulley and electric motor.</div>
<div>I've seen this done by
spinning the transmission INPUT
shaft with a pulley and electric
motor but not from the rear.</div>
<div>Any chance of damaging the
overdrive since the overrunning
clutch is only going to spin in
the one direction, can it lock
up the overdrive?</div>
<div>Thanks in advance</div>
<div>Glenn</div>
<div><br clear="none">
</div>
</div>
</div>
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