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Re: [Fot] Broken Diffs

To: Robert Lang <robertlangtr6@yahoo.com>
Subject: Re: [Fot] Broken Diffs
From: Jack Wheeler via Fot <fot@autox.team.net>
Date: Wed, 21 Nov 2018 14:40:36 +0000 (UTC)
Cc: "fot@autox.team.net" <fot@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <1704375447.3826399.1542757789135.ref@mail.yahoo.com> <1704375447.3826399.1542757789135@mail.yahoo.com> x64; rv:63.0) Gecko/20100101 Firefox/63.0
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 Should be a lot of used carriers around?

    On Tuesday, November 20, 2018, 11:34:42 PM EST, Robert Lang via Fot 
<fot@autox.team.net> wrote:  
 
 Hi,
I broke a diff at Thompson back in October and I finally did a post-mortem. 
Looks like a couple of bolts backed out and when the shit hit the fan, the 4 or 
5 that were still holding on sheared off. In any case, lots of metal bits in 
there. Some of the big pieces bounced around in the diff and there's some 
gouges in the Tran-X center section. The question to the group is - assuming 
that I find no cracks in the center section, it it accepted practice to clean 
off the dings to prevent stress risers and re-use it or is this a "tosser".
Speaking of Tran-X, does anyone sell those now or are we limited to Quaife and 
GKN? I see that Rimmer lists both of those units. To be honest, I'm not a fan 
of Quaife because I have to run the rear a lot softer to prevent wheel spin in 
the tight stuff - that kills my times at places like Thompson and Palmer (like 
1.5 to 2 seconds a lap.) Speaking of GKN, I know nothing about them other than 
"clutch type differential". Feel free to chime in if you have experience with 
those units.

Also, I am nearly 100% certain that I was using new lock washers and Red 
Loctite high strength thread compound, so the bolts backing out was a total 
surprise when I cracked the case open. I was assuming that the pinion head had 
sheared off based on how the car felt when the diff broke. It was BANG and done 
- box full of neutrals.
Off topic - looks like I'm not driving at ButtonWillow, I got a reply from Joe 
Siam that he has nothing available for that date. Oh well. Look like my budget 
is going to gears and stuff anyway... ;-)
c ya,Bob Lang
_______________________________________________
fot@autox.team.net

http://www.fot-racing.com

Archive: http://www.team.net/pipermail/fot


  
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<html><head></head><body><div class=3D"ydpc7dbbde5yahoo-style-wrap" style=
=3D"font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 1=
3px;"><div></div>
        <div>Should be a lot of used carriers around?<br></div><div><br></d=
iv>
       =20
        </div><div id=3D"ydpb94af08dyahoo_quoted_3319891977" class=3D"ydpb9=
4af08dyahoo_quoted">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
               =20
                <div>
                    On Tuesday, November 20, 2018, 11:34:42 PM EST, Robert =
Lang via Fot &lt;fot@autox.team.net&gt; wrote:
                </div>
                <div><br></div>
                <div><br></div>
                <div><div id=3D"ydpb94af08dyiv8313936560"><div><div class=
=3D"ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-fami=
ly:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">Hi,</div><=
div class=3D"ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"=
font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><=
br></div><div class=3D"ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap"=
 style=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-siz=
e:13px;">I broke a diff at Thompson back in October and I finally did a pos=
t-mortem. Looks like a couple of bolts backed out and when the shit hit the=
 fan, the 4 or 5 that were still holding on sheared off. In any case, lots =
of metal bits in there. Some of the big pieces bounced around in the diff a=
nd there's some gouges in the Tran-X center section. The question to the gr=
oup is - assuming that I find no cracks in the center section, it it accept=
ed practice to clean off the dings to prevent stress risers and re-use it o=
r is this a "tosser".</div><div class=3D"ydpb94af08dyiv8313936560ydp243c356=
3yahoo-style-wrap" style=3D"font-family:Helvetica Neue, Helvetica, Arial, s=
ans-serif;font-size:13px;"><br></div><div class=3D"ydpb94af08dyiv8313936560=
ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica Neue, Helvetica=
, Arial, sans-serif;font-size:13px;">Speaking of Tran-X, does anyone sell t=
hose now or are we limited to Quaife and GKN? I see that Rimmer lists both =
of those units. To be honest, I'm not a fan of Quaife because I have to run=
 the rear a lot softer to prevent wheel spin in the tight stuff - that kill=
s my times at places like Thompson and Palmer (like 1.5 to 2 seconds a lap.=
) Speaking of GKN, I know nothing about them other than "clutch type differ=
ential". Feel free to chime in if you have experience with those units.<br>=
</div><div class=3D"ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" st=
yle=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:1=
3px;"><br></div><div class=3D"ydpb94af08dyiv8313936560ydp243c3563yahoo-styl=
e-wrap" style=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;f=
ont-size:13px;">Also, I am nearly 100% certain that I was using new lock wa=
shers and Red Loctite high strength thread compound, so the bolts backing o=
ut was a total surprise when I cracked the case open. I was assuming that t=
he pinion head had sheared off based on how the car felt when the diff brok=
e. It was BANG and done - box full of neutrals.</div><div class=3D"ydpb94af=
08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica=
 Neue, Helvetica, Arial, sans-serif;font-size:13px;"><br></div><div class=
=3D"ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-fami=
ly:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">Off topic =
- looks like I'm not driving at ButtonWillow, I got a reply from Joe Siam t=
hat he has nothing available for that date. Oh well. Look like my budget is=
 going to gears and stuff anyway... ;-)</div><div class=3D"ydpb94af08dyiv83=
13936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica Neue, H=
elvetica, Arial, sans-serif;font-size:13px;"><br></div><div class=3D"ydpb94=
af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helveti=
ca Neue, Helvetica, Arial, sans-serif;font-size:13px;">c ya,</div><div clas=
s=3D"ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-fam=
ily:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">Bob Lang<=
br></div></div></div>_______________________________________________<br><a =
href=3D"mailto:fot@autox.team.net"; rel=3D"nofollow" target=3D"_blank">fot@a=
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_______________________________________________
fot@autox.team.net

http://www.fot-racing.com

Archive: http://www.team.net/pipermail/fot



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