 Hub failure at Summit Point, thank God it was at low speed |
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 Sep 25 2010, 05:09 PM
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Experienced Member  Group: Advanced Members Posts: 1,019 Joined: 18-September 04 From: State College, PA Member No.: 462  |
I was at Summit Point yesterday for FATT. During my 2nd heat I had my left front hub fail. It let loose in turn 5-6 or so, and if you know Summit, that's about the slowest part of the track. Which is right after the part of the track with the highest pucker factor IMO (downhill at 80-100 depending, about a 30 degree turn a little off camber and max braking soon as you're through it). So I am OK and there is no body damage.
The hub flange sheared right off, and the wheel getting pushed back it must have bent up either the brake caliper or the slide pins, the caliper doesn't float any more. A guy with a TA next to me thankfully had a spare hub, so I got that on and drove carefully home. This was a Mike Minear hub so I'm contacting him to see if he wants to inspect it. I'll probably get a new one from him over the winter. I'm thankful that was all relatively low drama. If that happened almost anywhere else on track, well all the other places are pretty high speed, and it would've been a real wreck, literally. Chris |
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Jan 11 2011, 12:38 AM
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newbie Group: Members Posts: 22 Joined: 28-June 10 From: Kamloops, B.C. Member No.: 15,428 |
Yes, but a Dana 70 axle shaft does not carry any weight, it only has torsional loads on it to drive the wheel. The weight is supported by a beefy spindle with big tapered roller bearings that are about 4 inches apart. Your spindle will have alot of bending forces on it and that ring groove is a huge stress riser right where the bending force is going to occur...Just my 2 cents.
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Posts in this topic
SuperMacGuy Hub failure at Summit Point Sep 25 2010, 05:09 PM
00 SS Chris,
I'm glad you and your car are OK. I g... Sep 25 2010, 06:40 PM marka Howdy,
How much time was on the hubs and when was... Sep 25 2010, 10:16 PM CMC #37 Wow! Glad you are ok. Do let us know what happ... Sep 26 2010, 09:42 PM 00 SS As soon as I know, I let you all know. Sep 26 2010, 09:48 PM rocky The carousel is the slowest part of that track I a... Sep 27 2010, 07:19 PM cozog Did you get much warning? When mine failed it was ... Sep 28 2010, 02:12 PM rmackintosh VERY glad that you are OK! Glad it is all ... Sep 28 2010, 02:20 PM SuperMacGuy There wasn't really much warning. In fact ther... Sep 28 2010, 04:36 PM Chevy053 QUOTE (SuperMacGuy @ Sep 25 2010, 11:09 A... Sep 28 2010, 05:24 PM Doug Phillips A friend in a Corvette just replaced his driver si... Oct 4 2010, 12:29 PM
marka Howdy,
QUOTE (Doug Phillips @ Oct 4 2010, 08... Oct 4 2010, 07:44 PM Doug Phillips QUOTE (marka @ Oct 4 2010, 03:44 PM) Howd... Oct 5 2010, 12:53 PM SuperMacGuy QUOTE (marka @ Oct 4 2010, 03:44 PM) Was ... Oct 5 2010, 04:37 PM 00 SS Chris,
I think Mark was asking if the Corvette me... Oct 7 2010, 07:00 PM Doug Phillips QUOTE (00 SS @ Oct 7 2010, 03:00 PM) Chri... Oct 7 2010, 07:25 PM Casey_SS Any updates on this? Very glad you were able to e... Oct 12 2010, 04:45 AM SuperMacGuy I have not heard from Mike yet. But, at the autocr... Oct 27 2010, 01:50 AM Lawson3565 I am Doug's friend and it was my 92 Vette that... Oct 27 2010, 02:23 AM robz71lm7 QUOTE (SuperMacGuy @ Oct 26 2010, 09:50 P... Oct 27 2010, 12:42 PM marka Howdy,
What sorta time was on the hubs from Mike ... Oct 27 2010, 03:12 PM SuperMacGuy QUOTE (marka @ Oct 27 2010, 11:12 AM) Wha... Oct 27 2010, 05:00 PM SuperMacGuy Here's a couple pix from the first failed one ... Oct 28 2010, 02:37 AM roostmeyer Wow no beech marks or necking, looks like they wen... Oct 28 2010, 06:22 PM PeteL QUOTE (roostmeyer @ Oct 28 2010, 02:22 PM... Oct 29 2010, 12:46 AM v7guy has there been any updates on this? Nov 3 2010, 08:30 AM 01badz28 QUOTE (v7guy @ Nov 3 2010, 03:30 AM) has ... Nov 10 2010, 08:05 PM robz71lm7 It would be interesting if some other owners of th... Nov 13 2010, 02:56 AM SuperMacGuy QUOTE (robz71lm7 @ Nov 12 2010, 09:56 PM)... Nov 13 2010, 06:14 PM 00 SS I have some dye penatrant on order. I'm going... Nov 13 2010, 08:31 PM Chevy053 QUOTE (00 SS @ Nov 13 2010, 03:31 PM) I h... Jan 10 2011, 04:16 PM ReEntryRacer Wow! Somebody from the 'loops! Not m... Jan 11 2011, 03:45 AM SuperMacGuy I talked to Mike several days ago. Here's some... Jan 15 2011, 08:11 PM 85t5mcss QUOTE (SuperMacGuy @ Jan 15 2011, 08:11 P... Jan 16 2011, 12:38 AM StanIROCZ QUOTE (SuperMacGuy @ Jan 15 2011, 03:11 P... Jan 16 2011, 06:30 PM 00 SS Thanks for the offer on the seal catalog. But tha... Jan 16 2011, 06:21 PM StanIROCZ Also, having a case and core in a part should perf... Jan 16 2011, 06:57 PM PeteL I evaluated the broken parts for Mike. The main i... Jan 17 2011, 01:01 AM StanIROCZ QUOTE (PeteL @ Jan 16 2011, 08:01 PM) The... Jan 17 2011, 04:36 AM PeteL QUOTE (StanIROCZ @ Jan 16 2011, 11:36 PM)... Jan 18 2011, 01:07 AM 00 SS The part was "supposed" to be a forging.... Jan 17 2011, 06:02 PM StanIROCZ QUOTE (00 SS @ Jan 17 2011, 01:02 PM) Car... Jan 17 2011, 08:37 PM 00 SS They only made C5 hubs. They never completed thei... Jan 17 2011, 09:59 PM StanIROCZ Does the tone ring have the same tooth count? Wou... Jan 17 2011, 10:54 PM PeteL QUOTE (StanIROCZ @ Jan 17 2011, 05:54 PM)... Jan 18 2011, 01:16 AM SuperMacGuy QUOTE (StanIROCZ @ Jan 17 2011, 05:54 PM)... Jan 18 2011, 03:40 PM 00 SS A new upright with a C6 Z06 hub would be a good so... Jan 17 2011, 11:03 PM 00 SS Primarily A. They are a stronger factory design u... Jan 18 2011, 03:44 PM CMC #37 I know someone who went the Corvette hub route on ... Jan 18 2011, 05:40 PM 00 SS Any details of how they implemented it and which c... Jan 18 2011, 06:16 PM CMC #37 QUOTE (00 SS @ Jan 18 2011, 01:16 PM) Any... Jan 18 2011, 06:19 PM Chevy053 Does anyone know how long the C6-Z06 or 'Hardb... Jan 25 2011, 08:35 PM Mojave QUOTE (Chevy053 @ Jan 25 2011, 02:35 PM) ... Jan 26 2011, 01:49 AM |
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