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Thanks for the info & excellent report Henry, albeit not good news.Glad no
more damage was done, sent you a couple emails.
Glen Efinger
On Sunday, August 4, 2024 at 01:54:00 PM EDT, yellow04 via Fot
<fot@autox.team.net> wrote:
I am throwing this out there as a public service announcement, I broke a
part that I thought we had bulletproof solution to. At PittRace last
weekend I broke one of Southwick's aluminum front hubs. The area of the
hub that the inner race presses into sheared off, thankfully the wheel
was retained by the outer bearing and stayed on the car. I don't know
for how many laps that would have been the case!
Has anybody else heard of one of these hubs failing?
Discussions with Richard Good, who took over manufacturing these hubs
revealed his hubs are turned from a stronger material, the GoodParts
hubs are made from 7075 T6 aluminum, while Southwick made theirs from
6061 T6. Yes, it is a little heavier, but the GoodParts hub is still
about a pound lighter than stock. If you are unsure where your hubs were
made, I provided details in the writeup.
I have also been in contact with Chuck Gee, our resident metallurgist.
He is suggesting anybody running these Southwick hubs should start a
program of dye penetration testing.
Pictures and writeup here.
https://tr250racer.com/southwick-front-hub-failure/
Hope this helps everybody keep the shiny side up!
Henry Frye
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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<html><head></head><body><div class=3D"ydp686ac369yahoo-style-wrap" style=
=3D"font-family:Arial, Helvetica, sans-serif;font-size:16px;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false">Thanks for the info & ex=
cellent report Henry, albeit not good news.</div><div dir=3D"ltr" data-setd=
ir=3D"false">Glad no more damage was done, sent you a couple emails.</div><=
div dir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdi=
r=3D"false">Glen Efinger<br></div><div><br></div>
=20
</div><div id=3D"ydp96e07d7eyahoo_quoted_3230421447" class=3D"ydp96=
e07d7eyahoo_quoted"><div class=3D"ydp96e07d7eyahoo-style-wrap" style=3D"fon=
t-family:Arial, Helvetica, sans-serif;font-size:16px;">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
=20
<div class=3D"ydp96e07d7equoted-text-header">
On Sunday, August 4, 2024 at 01:54:00 PM EDT, yello=
w04 via Fot <fot@autox.team.net> wrote:
</div>
</div><div style=3D"font-family:'Helvetica Neue', Helvetica=
, Arial, sans-serif;font-size:13px;color:#26282a;border-left: 1px solid #cc=
c;padding-left: 8px;margin: 0px 0px 0px 8px" class=3D"ydp96e07d7einline_rep=
ly_quote_container" data-split-quote-node=3D"true">
<div><br></div><div><br></div>
<div><div dir=3D"ltr">I am throwing this out there as a pub=
lic service announcement, I broke a <br></div><div dir=3D"ltr">part that I =
thought we had bulletproof solution to. At PittRace last <br></div><div dir=
=3D"ltr">weekend I broke one of Southwick's aluminum front hubs. The area o=
f the <br></div><div dir=3D"ltr">hub that the inner race presses into shear=
ed off, thankfully the wheel <br></div><div dir=3D"ltr">was retained by the=
outer bearing and stayed on the car. I don't know <br></div><div dir=3D"lt=
r">for how many laps that would have been the case!<br></div><div dir=3D"lt=
r"><br></div><div dir=3D"ltr">Has anybody else heard of one of these hubs f=
ailing?<br></div><div dir=3D"ltr"><br></div><div dir=3D"ltr">Discussions wi=
th Richard Good, who took over manufacturing these hubs <br></div><div dir=
=3D"ltr">revealed his hubs are turned from a stronger material, the GoodPar=
ts <br></div><div dir=3D"ltr">hubs are made from 7075 T6 aluminum, while So=
uthwick made theirs from <br></div><div dir=3D"ltr">6061 T6. Yes, it is a l=
ittle heavier, but the GoodParts hub is still <br></div><div dir=3D"ltr">ab=
out a pound lighter than stock. If you are unsure where your hubs were <br>=
</div><div dir=3D"ltr">made, I provided details in the writeup.<br></div><d=
iv dir=3D"ltr"><br></div><div dir=3D"ltr">I have also been in contact with =
Chuck Gee, our resident metallurgist. <br></div><div dir=3D"ltr">He is sugg=
esting anybody running these Southwick hubs should start a <br></div><div d=
ir=3D"ltr">program of dye penetration testing.<br></div><div dir=3D"ltr"><b=
r></div><div dir=3D"ltr">Pictures and writeup here.<br></div><div dir=3D"lt=
r"><br></div><div dir=3D"ltr"><a href=3D"https://tr250racer.com/southwick-f=
ront-hub-failure/" rel=3D"nofollow" target=3D"_blank">https://tr250racer.co=
m/southwick-front-hub-failure/</a><br></div><div dir=3D"ltr"><br></div><div=
dir=3D"ltr">Hope this helps everybody keep the shiny side up!<br></div><di=
v dir=3D"ltr"><br></div><div dir=3D"ltr">Henry Frye<br></div><div dir=3D"lt=
r">_______________________________________________<br></div><div dir=3D"ltr=
"><a href=3D"mailto:fot@autox.team.net"; rel=3D"nofollow" target=3D"_blank">=
fot@autox.team.net</a><br></div><div dir=3D"ltr"><br></div><div dir=3D"ltr"=
><a href=3D"http://www.fot-racing.com"; rel=3D"nofollow" target=3D"_blank">h=
ttp://www.fot-racing.com</a><br></div><div dir=3D"ltr"><br></div><div dir=
=3D"ltr">Donate: <a href=3D"http://www.team.net/donate.html"; rel=3D"nofollo=
w" target=3D"_blank">http://www.team.net/donate.html</a><br></div><div dir=
=3D"ltr">Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"nofollow=
" target=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http://www=
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f=3D"http://autox.team.net/mailman/options/fot/fubog1@aol.com"; rel=3D"nofol=
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.com</a><br></div><div dir=3D"ltr"><br></div><div dir=3D"ltr"><br></div></d=
iv>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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