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Several possibilities come to mind.. for some (very odd) reason upon a
load the voltage drops enough to allow the solenoid to drop out (check
your fan belt) or as others mentioned the clutch assembly is not fully
engaged (bent thrust carrier posts) and most likely, given your
description, is that the bearings in the uni direction clutch and the
face of the annulus, where the bearings sit in their "ramps" are worn
and slip under heavy load. This I would think would make some sort of
noise. Also check that the brake ring is not cracked. And lastly or
firstly make sure that the operating lever is properly adjusted..
TR's were not fitted with a throttle switch, which would be the first
thing to consider...as that is the same symptom based on throttle position..
DaveP
On 10/6/2015 9:53 AM, Rye Livingston wrote:
> Looking for comments and suggestions.
>
> I just installed a TR4 rebuilt overdrive transmission in my 1960 TR3.
> Everything is running well and the OD is pretty cool. I don't know
> what to expect or how it should work, but this doesn't seem right to
> me. When I'm up to 60 mph or so and flip the switch, it shifts into
> OD no problem. If I'm accelerating at the time, it won't shift until
> I let up on the gas so there isn't any load. As I experimented with
> this, driving down HWY 1 along the Pacific Coast Highway, there are
> short rolling hills and as I am going up the hill and flip the switch,
> it won't shift into OD until again I've crested the hill and have let
> up on the gas a bit.
>
> Now 3rd gear, I wondered if I'd ever use OD in 3rd gear, but I do find
> when driving along a 4 lane blvd with the speed about 45 mph, 3rd gear
> with OD is pretty nice. So while cruising along like that when I
> accelerate fairly aggressively, like an automatic transmission,
> without me touching the switch, it will drop out of OD by itself as I
> accelerate, and when the load is reduced as I let up on the gas, it
> will shift back into OD.
>
> I told the mechanic who rebuilt the transmission about this and he
> said that isn't right, and his first question was if the oil level OK
> so I checked. I took out the side fill plug and can see the oil level
> and it just starts to ooze over the threads. So that's not the problem.
>
> What is normal shifting for an OD transmission?
>
> Thanks,
>
> Rye
>
>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
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--
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM
87107 505-352-1378 Go HERE: my world www.porterbikes.com/
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Several possibilities come to mind.. for some (very odd) reason upon
a load the voltage drops enough to allow the solenoid to drop out
(check your fan belt) or as others mentioned the clutch assembly is
not fully engaged (bent thrust carrier posts) and most likely, given
your description, is that the bearings in the uni direction clutch
and the face of the annulus, where the bearings sit in their
"ramps" are worn and slip under heavy load. This I would think would
make some sort of noise. Also check that the brake ring is not
cracked. And lastly or firstly make sure that the operating lever is
properly adjusted..<br>
TR's were not fitted with a throttle switch, which would be the
first thing to consider...as that is the same symptom based on
throttle position..<br>
DaveP<br>
<br>
<div class="moz-cite-prefix">On 10/6/2015 9:53 AM, Rye Livingston
wrote:<br>
</div>
<blockquote cite="mid:791de236-8b96-401a-af41-1e7297b967ee@me.com"
type="cite">
<div>Looking for comments and suggestions. </div>
<div><br>
</div>
<div>I just installed a TR4 rebuilt overdrive transmission in my
1960 TR3. Everything is running well and the OD is pretty cool.
I don't know what to expect or how it should work, but this
doesn't seem right to me. When I'm up to 60 mph or so and flip
the switch, it shifts into OD no problem. If I'm accelerating
at the time, it won't shift until I let up on the gas so there
isn't any load. As I experimented with this, driving down HWY 1
along the Pacific Coast Highway, there are short rolling hills
and as I am going up the hill and flip the switch, it won't
shift into OD until again I've crested the hill and have let up
on the gas a bit.</div>
<div><br>
</div>
<div>Now 3rd gear, I wondered if I'd ever use OD in 3rd gear, but
I do find when driving along a 4 lane blvd with the speed about
45 mph, 3rd gear with OD is pretty nice. So while cruising
along like that when I accelerate fairly aggressively, like an
automatic transmission, without me touching the switch, it will
drop out of OD by itself as I accelerate, and when the load is
reduced as I let up on the gas, it will shift back into OD.</div>
<div><br>
</div>
<div>I told the mechanic who rebuilt the transmission about this
and he said that isn't right, and his first question was if the
oil level OK so I checked. I took out the side fill plug and
can see the oil level and it just starts to ooze over the
threads. So that's not the problem.</div>
<div><br>
</div>
<div>What is normal shifting for an OD transmission?</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Rye</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">
** <a class="moz-txt-link-abbreviated"
href="mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a> **
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/archive";>http://www.team.net/archive</a>
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</pre>
</blockquote>
<br>
<div class="moz-signature">-- <br>
Dave Porter
Porter Custom Bicycles
2909 Arno St. NE
Albuquerque, NM 87107
505-352-1378
Go HERE: my world <a class="moz-txt-link-abbreviated"
href="http://www.porterbikes.com/";>www.porterbikes.com/</a>
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