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Re: [Fot] Differential Setup

To: FOT Triumph <fot@autox.team.net>
Subject: Re: [Fot] Differential Setup
From: Robert Lang via Fot <fot@autox.team.net>
Date: Mon, 22 Jul 2019 12:53:51 +0000 (UTC)
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <898793127.2888179.1563800031968.ref@mail.yahoo.com> Intel Mac OS X 10.12; rv:68.0) Gecko/20100101 Firefox/68.0
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Hi,
Thanks for the replies. On my initial setup, the ring gear was too tight 
against the pinion. I just moved the shims around to get things to free up and 
the pattern seems to be okay. So, I think, by extension, you need to set 
bearing preload, then pinion depth via shims on the gear side of the carrier 
and then backlash via the shims on the smooth side. That's what I did and 
that's what worked.

The funny thing is, I did this setup YEARS ago with my 4.33 setup (and an 
Oerlikon gear courtesy of Carsten Conrads) and I ran that setup for over 10 
years in autocross. When I pulled it apart to scavenge the Quaife, the gears 
were perfect, so I musta done something right! But for the life of me I could 
not remember how I got there. Dumb luck is probably the answer.
Now I gotta get this sucker in a car and run it for some break-in miles..
As for pulling the carrier bearings off, I gotta make a better tool setup. I 
broke a two-jaw puller in the process and wound up having to cut off two 
carrier bearings to get the shims installed.

Thanks for the input!
Regards,Bob Lang

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<html><head></head><body><div class=3D"yahoo-style-wrap" style=3D"font-fami=
ly:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir=
=3D"ltr" data-setdir=3D"false">Hi,</div><div dir=3D"ltr" data-setdir=3D"fal=
se"><br></div><div dir=3D"ltr" data-setdir=3D"false">Thanks for the replies=
. On my initial setup, the ring gear was too tight against the pinion. I ju=
st moved the shims around to get things to free up and the pattern seems to=
 be okay. So, I think, by extension, you need to set bearing preload, then =
pinion depth via shims on the gear side of the carrier and then backlash vi=
a the shims on the smooth side. That's what I did and that's what worked.<b=
r></div><div dir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" d=
ata-setdir=3D"false">The funny thing is, I did this setup YEARS ago with my=
 4.33 setup (and an Oerlikon gear courtesy of Carsten Conrads) and I ran th=
at setup for over 10 years in autocross. When I pulled it apart to scavenge=
 the Quaife, the gears were perfect, so I musta done something right! But f=
or the life of me I could not remember how I got there. Dumb luck is probab=
ly the answer.</div><div dir=3D"ltr" data-setdir=3D"false"><br></div><div d=
ir=3D"ltr" data-setdir=3D"false">Now I gotta get this sucker in a car and r=
un it for some break-in miles..</div><div dir=3D"ltr" data-setdir=3D"false"=
><br></div><div dir=3D"ltr" data-setdir=3D"false">As for pulling the carrie=
r bearings off, I gotta make a better tool setup. I broke a two-jaw puller =
in the process and wound up having to cut off two carrier bearings to get t=
he shims installed.<br></div><div dir=3D"ltr" data-setdir=3D"false"><br></d=
iv><div dir=3D"ltr" data-setdir=3D"false">Thanks for the input!</div><div d=
ir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"=
false">Regards,</div><div dir=3D"ltr" data-setdir=3D"false">Bob Lang<br></d=
iv></div></body></html>
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