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Hey Bob,
And happy Thanksgiving. When I was running Fletcher's old car I ran a diff
cooler to help with failures. At the time it was set up with a belt on the
right side stub axle and mechanical pump. If I did it today I would use an
electric pump.
I also burned through a couple rears before I properly matched my
revs...too much pressure on the diff...using it to slow the car instead of
my brakes.
I think I turned some of my fastest times 1:25 at Summit Point but
sacrificed a diff going down the shoot with poor rev matching. I may still
have that pinion with no teeth left around somewhere to remind me.
I really think a cooler would help longevity if you don't currently run
one...and yes any form of LSD, especially a torsen/quafe creates a ton more
heat to try to dissipate...even more fluid capacity is good.
Cheers
On Wed, Nov 21, 2018, 10:19 AM Jack Wheeler via Fot <fot@autox.team.net
wrote:
> 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
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/fot
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/jwheeler1947@yahoo.com
>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/fot
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>
>
>
--0000000000006cf426057b2eeb91
Content-Transfer-Encoding: quoted-printable
<div dir=3D"auto">Hey Bob,<div dir=3D"auto"><br></div><div dir=3D"auto">And=
happy Thanksgiving. When I was running Fletcher's old car I ran a diff=
cooler to help with failures. At the time it was set up with a belt on the=
right side stub axle and mechanical pump. If I did it today I would use an=
electric pump.</div><div dir=3D"auto">I also burned through a couple rears=
before I properly matched my revs...too much pressure on the diff...using =
it to slow the car instead of my brakes.</div><div dir=3D"auto">I think I t=
urned some of my fastest times 1:25 at Summit Point but sacrificed a diff g=
oing down the shoot with poor rev matching. I may still have that pinion wi=
th no teeth left around somewhere to remind me.</div><div dir=3D"auto">I re=
ally think a cooler would help longevity if you don't currently run one=
...and yes any form of LSD, especially a torsen/quafe creates a ton more he=
at to try to dissipate...even more fluid capacity is good.</div><div dir=3D=
"auto"><br></div><div dir=3D"auto">Cheers</div></div><br><div class=3D"gmai=
l_quote"><div dir=3D"ltr">On Wed, Nov 21, 2018, 10:19 AM Jack Wheeler via F=
ot <<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a> wrote:<=
br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;borde=
r-left:1px #ccc solid;padding-left:1ex"><div><div class=3D"m_-1364502047064=
798880ydpc7dbbde5yahoo-style-wrap" style=3D"font-family:Helvetica Neue,Helv=
etica,Arial,sans-serif;font-size:13px"><div></div>
<div>Should be a lot of used carriers around?<br></div><div><br></d=
iv>
=20
</div><div id=3D"m_-1364502047064798880ydpb94af08dyahoo_quoted_3319=
891977" class=3D"m_-1364502047064798880ydpb94af08dyahoo_quoted">
<div style=3D"font-family:'Helvetica Neue',Helvetica,Ar=
ial,sans-serif;font-size:13px;color:#26282a">
=20
<div>
On Tuesday, November 20, 2018, 11:34:42 PM EST, Robert =
Lang via Fot <<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank" re=
l=3D"noreferrer">fot@autox.team.net</a>> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id=3D"m_-1364502047064798880ydpb94af08dyiv8313936=
560"><div><div class=3D"m_-1364502047064798880ydpb94af08dyiv8313936560ydp24=
3c3563yahoo-style-wrap" style=3D"font-family:Helvetica Neue,Helvetica,Arial=
,sans-serif;font-size:13px">Hi,</div><div class=3D"m_-1364502047064798880yd=
pb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Hel=
vetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><br></div><div class=
=3D"m_-1364502047064798880ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wr=
ap" 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 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 o=
f metal bits in there. Some of the big pieces bounced around in the diff an=
d 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 acc=
epted practice to clean off the dings to prevent stress risers and re-use i=
t or is this a "tosser".</div><div class=3D"m_-136450204706479888=
0ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:=
Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><br></div><div cl=
ass=3D"m_-1364502047064798880ydpb94af08dyiv8313936560ydp243c3563yahoo-style=
-wrap" style=3D"font-family:Helvetica Neue,Helvetica,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 lists both of those units. To be hone=
st, 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 l=
ike Thompson and Palmer (like 1.5 to 2 seconds a lap.) Speaking of GKN, I k=
now nothing about them other than "clutch type differential". Fee=
l free to chime in if you have experience with those units.<br></div><div c=
lass=3D"m_-1364502047064798880ydpb94af08dyiv8313936560ydp243c3563yahoo-styl=
e-wrap" style=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font=
-size:13px"><br></div><div class=3D"m_-1364502047064798880ydpb94af08dyiv831=
3936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica Neue,Hel=
vetica,Arial,sans-serif;font-size:13px">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 ope=
n. 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.</di=
v><div class=3D"m_-1364502047064798880ydpb94af08dyiv8313936560ydp243c3563ya=
hoo-style-wrap" style=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-se=
rif;font-size:13px"><br></div><div class=3D"m_-1364502047064798880ydpb94af0=
8dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica =
Neue,Helvetica,Arial,sans-serif;font-size:13px">Off topic - looks like I=
9;m not driving at ButtonWillow, I got a reply from Joe Siam that he has no=
thing available for that date. Oh well. Look like my budget is going to gea=
rs and stuff anyway... ;-)</div><div class=3D"m_-1364502047064798880ydpb94a=
f08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetic=
a Neue,Helvetica,Arial,sans-serif;font-size:13px"><br></div><div class=3D"m=
_-1364502047064798880ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" s=
tyle=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13p=
x">c ya,</div><div class=3D"m_-1364502047064798880ydpb94af08dyiv8313936560y=
dp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica Neue,Helvetica,A=
rial,sans-serif;font-size:13px">Bob Lang<br></div></div></div>_____________=
__________________________________<br><a href=3D"mailto:fot@autox.team.net"=
rel=3D"nofollow noreferrer" target=3D"_blank">fot@autox.team.net</a><br><b=
r><a href=3D"http://www.fot-racing.com"; rel=3D"nofollow noreferrer" target=
=3D"_blank">http://www.fot-racing.com</a><br><br>Donate: <a href=3D"http://=
www.team.net/donate.html" rel=3D"nofollow noreferrer" target=3D"_blank">htt=
p://www.team.net/donate.html</a><br>Archive: <a href=3D"http://www.team.net=
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r" target=3D"_blank">http://autox.team.net/mailman/options/fot/jwheeler1947=
@yahoo.com</a><br><br><br></div>
</div>
</div></div>_______________________________________________<br>
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</blockquote></div>
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