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I had a little time this weekend to work on the early TR3 tranny again and I=
test fitted the gears on the mainshaft. This early box has the funky three e=
ared thrust washer, with holes.
I have two questions I hope can be answered. The three eared washer locks on=
to the splines on the mainshaft but there is a significant gap for the hub t=
o slide on the mainshaft. Is that hub supposed to slide or does another wash=
er go in front ? And, why the holes?=20
I don't see the extra washer in parts books.
I'm getting a custom bushing made to use a TR4 input shaft on the early main=
shaft.
Thanks in advance.
Sent from my iPhone
> On Aug 19, 2015, at 7:35 PM, malaboge@aol.com wrote:
>=20
> I agree, loose is the way to go with that bushing. The original style also=
had a chamfered edge on the rear of the inside diameter, probably to help t=
he insertion of the third motion shaft into that bushing. The nose of the or=
iginal third motion shaft (rear mainshaft) had a scroll cut into it to help l=
ubrication, but the original bushings were smooth on both inside and out.
>=20
> I think the factory went to the larger needle style bearing to alleviate t=
he wear issue in the bushing as it allowed the trans to pop out of third gea=
r on decel when that bushing got worn enough to allow movement at that inter=
face.
>=20
> Good luck and check the triangular thrust spacer at the back of the box fo=
r cracks emanating from the corners of the teeth cut into it.
>=20
> my bushings are a bit worn as well...
> Nick in Nor Cal
>=20
>=20
>=20
> -----Original Message-----
> From: rkramer3 <rkramer3@austin.rr.com>
> To: Enquiries Road & Track <enquiries@roadandtrack.net.au>; fot <fot@autox=
.team.net>
> Sent: Wed, Aug 19, 2015 3:01 pm
> Subject: Re: [Fot] early TR3 input shaft question
>=20
>=20
>=20
>=20
> That's the type of info I was looking for. Thanks Terry=20
>=20
> Bob Kramer=20
>=20
> rkramer3@austin.rr.com=20
>=20
> =20
>=20
> ---- Enquiries Road & Track <enquiries@roadandtrack.net.au> wrote: =20
>=20
> > the hard bronze bush system was used on all vanguards and non syncro TR=
;s.=20
>=20
> > The bush needs to float between main-shaft spigot and input shaft inner=
, so=20
>=20
> > about 0.003" clearance both inside and outside. we always made them wit=
h a=20
>=20
> > deep cut spiral in them to transfer oil. they will feel sloppy and the=20=
>=20
> > input shaft will move around, but its no hassle in a race car box that=20=
>=20
> > comes apart regularly and is not expected to last 100,000 miles. Use LG=
3=20
>=20
> > spec bronze material to make them=20
>=20
> > =20
>=20
> > Terry=20
>=20
> =20
>=20
>=20
>=20
> =20
>=20
>=20
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<html><head><meta http-equiv="content-type" content="text/html;
charset=utf-8"></head><body dir="auto"><div>I had a little time this weekend to
work on the early TR3 tranny again and I test fitted the gears on the
mainshaft. This early box has the funky three eared thrust washer, with
holes.</div><div><br></div><div>I have two questions I hope can be answered.
The three eared washer locks onto the splines on the mainshaft but there is a
significant gap for the hub to slide on the mainshaft. Is that hub supposed to
slide or does another washer go in front ? And, why the
holes? </div><div><br></div><div>I don't see the extra washer in parts
books.</div><div><br></div><div>I'm getting a custom bushing made to use a TR4
input shaft on the early mainshaft.</div><div><br></div><div>Thanks in
advance.</div><div><br>Sent from my iPhone</div><div><br>On Aug 19, 2015, at
7:35 PM, <a href="mailto:malaboge@aol.com";>malaboge@aol.com</a>
wrote:<br><br></div><blockquote type="cite"><div>
<div id="AOLMsgPart_1_7e03571d-ec10-4ba6-8d77-fb845e6ab42b"> <font
size="4"><font face="Comic Sans MS, sans-serif">I agree, loose is the way to go
with that bushing. The original style also had a chamfered edge on the rear of
the inside diameter,<font face="Comic Sans MS, sans-serif"> probably to help
the insertion of the third motion shaft into that bushing. The nose of the
original third motion shaft (rear mainshaft) had a scroll cut into it to help
lubrication<font face="Comic Sans MS, sans-serif">, but the original bushings
were smooth on both inside and out.<br>
<br>
<font face="Comic Sans MS, sans-serif">I think the factory went to the <font
face="Comic Sans MS, sans-serif">larger needle style bearing to alleviate the
wear issue in the bushing as it allowed the trans to pop out of third gear on
decel when that bush<font face="Comic Sans MS, sans-serif">ing got worn enough
to allow movement at that interface.<br>
<br>
<font face="Comic Sans MS, sans-serif">Good luck and check the triangular
thrust spa<font face="Comic Sans MS, sans-serif">cer at the back of the box for
cracks emanating from the corners of the teeth cut into it.<br>
<br>
<font face="Comic Sans MS, sans-serif">my bushings are a bit worn as well...<br>
<font face="Comic Sans MS, sans-serif">Nick in Nor Cal</font><br>
</font></font></font></font></font></font></font></font></font></font>
<div style="font-family:Comic Sans MS, sans-serif;color:black;font-size:14pt;">
<br>
</div>
<div> <br>
</div>
<div><br>
</div>
-----Original Message-----<br>
From: rkramer3 <<a
href="mailto:rkramer3@austin.rr.com";>rkramer3@austin.rr.com</a>><br>
To: Enquiries Road & Track <<a
href="mailto:enquiries@roadandtrack.net.au";>enquiries@roadandtrack.net.au</a>>;
fot <<a href="mailto:fot@autox.team.net";>fot@autox.team.net</a>><br>
Sent: Wed, Aug 19, 2015 3:01 pm<br>
Subject: Re: [Fot] early TR3 input shaft question<br>
<br>
<br>
<div id="AOLMsgPart_0_42480307-7b3e-4dda-89fc-c21f0787460f" style="margin:
0px;font-family: Tahoma, Verdana, Arial, Sans-Serif;font-size: 12px;color:
#000;background-color: #fff;"> <br>
<br>
<pre style="font-size: 9pt;"><tt>That's the type of info I was looking for.
Thanks Terry <br>
Bob Kramer <br>
<a href="mailto:rkramer3@austin.rr.com";>rkramer3@austin.rr.com</a> <br>
<br>
---- Enquiries Road & Track <<a
href="mailto:enquiries@roadandtrack.net.au";>enquiries@roadandtrack.net.au</a>>
wrote: <br>
> the hard bronze bush system was used on all vanguards and non syncro
TR;s. <br>
> The bush needs to float between main-shaft spigot and input shaft inner,
so <br>
> about 0.003" clearance both inside and outside. we always made them with
a <br>
> deep cut spiral in them to transfer oil. they will feel sloppy and the
<br>
> input shaft will move around, but its no hassle in a race car box that
<br>
> comes apart regularly and is not expected to last 100,000 miles. Use LG3
<br>
> spec bronze material to make them <br>
> <br>
> Terry <br>
<br>
<br>
</tt></pre> <br>
</div>
<br>
</div>
</div></blockquote></body></html>
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