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Re: [Fot] Gearbox thoughts

To: fubog1 <fubog1@aol.com>
Subject: Re: [Fot] Gearbox thoughts
From: Scott Janzen <sjanzen@me.com>
Date: Thu, 15 Oct 2015 18:31:50 -0400
Cc: "fot@autox.team.net" <fot@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <0C6E18F6-AD39-4F4F-8367-582F45C17FB8@verizon.net> <1506c5aeea2-4971-b07a@webprd-m23.mail.aol.com>
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Oops, one more thing to add to my pre-race prep.  Every race weekend, really=
?

Sent from my mobile device=20

On Oct 15, 2015, at 12:35 PM, fubog1 <fubog1@aol.com> wrote:

I haven't converted one to the Stag type thrust bearing but I do advocate ch=
anging the gearoil regularly (every race or 2), they live a lot longer. The t=
rash in the gearoil eats the washers up, exacerbating the load/wear issue.
Glen



-----Original Message-----
From: Dean Tetterton <tr3a58@verizon.net>
To: FOT Triumph <fot@autox.team.net>
Sent: Thu, Oct 15, 2015 12:11 pm
Subject: [Fot] Gearbox thoughts

Since we have been thinking about gearbox's. The Stag layshaft was changed b=
y
Triumph to try and make them last longer due to the additional torque of the=
 V8.
They added needle bearings in place of the brass thrust washers at each end a=
nd
an additional bearing  in the lay gear at the end where 1st gear is. Has any=
body
tried this set up in a racing box? Does it help in the wearing of the laysha=
ft?


The addition of needle bearings means that the spacing of the box inside
where the lay gear rides is greater. The needle bearings being thicker than t=
he
thrust washers. This means that the Stag box is different inside.=20
I have been
able to make a tool that will cut the inside of a TR box to be the same as a=

Stag. I plan to build a box using the needle bearings. Don't at this time pl=
an
to put another bearing inside the lay gear. If I make the lay gear deeper
inside, I am afraid it will not be hard enough for the bearings to ride insi=
de.


Before doing all this, has any body gone down this road before. If so what
has been the experience?=20
Also any body with thoughts chime in. Is it worth the
effort?

Dean
T.

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<html><head><meta http-equiv="content-type" content="text/html; 
charset=utf-8"></head><body dir="auto"><div>Oops, one more thing to add to my 
pre-race prep. &nbsp;Every race weekend, really?<br><br>Sent from my mobile 
device&nbsp;</div><div><br>On Oct 15, 2015, at 12:35 PM, fubog1 &lt;<a 
href="mailto:fubog1@aol.com";>fubog1@aol.com</a>&gt; 
wrote:<br><br></div><div><font color="black" size="2" face="Arial, Helvetica, 
sans-serif">I h<font size="2">aven't converted one to the Stag type thrust 
bearing but I do advocate changing the gearoil regularly (every race or 2), 
they live a lot longer. The trash in the gearoil eats the washers up, 
exacerbating the load/wear issue.<br>
Glen<br>
</font>

<div> <br>

</div>



<div> <br>

</div>



<div> <br>

</div>



<div 
style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original 
Message-----<br>

From: Dean Tetterton &lt;<a 
href="mailto:tr3a58@verizon.net";>tr3a58@verizon.net</a>&gt;<br>

To: FOT Triumph &lt;<a 
href="mailto:fot@autox.team.net";>fot@autox.team.net</a>&gt;<br>

Sent: Thu, Oct 15, 2015 12:11 pm<br>

Subject: [Fot] Gearbox thoughts<br>

<br>




<div id="AOLMsgPart_1_78d61825-9875-41c7-afe5-fceca221496f" style="margin: 
0px;font-family: Tahoma, Verdana, Arial, Sans-Serif;font-size: 12px;color: 
#000;background-color: #fff;">

<pre style="font-size: 9pt;"><tt>Since we have been thinking about gearbox's. 
The Stag layshaft was changed by
Triumph to try and make them last longer due to the additional torque of the V8.
They added needle bearings in place of the brass thrust washers at each end and
an additional bearing  in the lay gear at the end where 1st gear is. Has anybody
tried this set up in a racing box? Does it help in the wearing of the layshaft?


The addition of needle bearings means that the spacing of the box inside
where the lay gear rides is greater. The needle bearings being thicker than the
thrust washers. This means that the Stag box is different inside. 
I have been
able to make a tool that will cut the inside of a TR box to be the same as a
Stag. I plan to build a box using the needle bearings. Don't at this time plan
to put another bearing inside the lay gear. If I make the lay gear deeper
inside, I am afraid it will not be hard enough for the bearings to ride inside.


Before doing all this, has any body gone down this road before. If so what
has been the experience? 
Also any body with thoughts chime in. Is it worth the
effort?

Dean
T.

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</tt></pre>
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