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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
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<html><head></head><body><div class=3D"ydp243c3563yahoo-style-wrap" style=
=3D"font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 1=
3px;">Hi,</div><div class=3D"ydp243c3563yahoo-style-wrap" style=3D"font-fam=
ily: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;"><br></=
div><div class=3D"ydp243c3563yahoo-style-wrap" style=3D"font-family: Helvet=
ica Neue, Helvetica, Arial, sans-serif; font-size: 13px;">I broke a diff at=
Thompson back in October and I finally did a post-mortem. Looks like a cou=
ple 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. So=
me 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 f=
ind no cracks in the center section, it it accepted practice to clean off t=
he dings to prevent stress risers and re-use it or is this a "tosser".</div=
><div class=3D"ydp243c3563yahoo-style-wrap" style=3D"font-family: Helvetica=
Neue, Helvetica, Arial, sans-serif; font-size: 13px;"><br></div><div class=
=3D"ydp243c3563yahoo-style-wrap" style=3D"font-family: Helvetica Neue, Helv=
etica, Arial, sans-serif; font-size: 13px;">Speaking of Tran-X, does anyone=
sell those now or are we limited to Quaife and GKN? I see that Rimmer list=
s 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 - th=
at 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 uni=
ts.<br></div><div class=3D"ydp243c3563yahoo-style-wrap" style=3D"font-famil=
y: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;"><br></di=
v><div class=3D"ydp243c3563yahoo-style-wrap" style=3D"font-family: Helvetic=
a Neue, Helvetica, Arial, sans-serif; font-size: 13px;">Also, I am nearly 1=
00% 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 crac=
ked the case open. I was assuming that the pinion head had sheared off base=
d on how the car felt when the diff broke. It was BANG and done - box full =
of neutrals.</div><div class=3D"ydp243c3563yahoo-style-wrap" style=3D"font-=
family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;"><br=
></div><div class=3D"ydp243c3563yahoo-style-wrap" style=3D"font-family: Hel=
vetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;">Off topic - lo=
oks 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 goi=
ng to gears and stuff anyway... ;-)</div><div class=3D"ydp243c3563yahoo-sty=
le-wrap" style=3D"font-family: Helvetica Neue, Helvetica, Arial, sans-serif=
; font-size: 13px;"><br></div><div class=3D"ydp243c3563yahoo-style-wrap" st=
yle=3D"font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size=
: 13px;">c ya,</div><div class=3D"ydp243c3563yahoo-style-wrap" style=3D"fon=
t-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;">B=
ob Lang<br></div></body></html>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/pipermail/fot
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