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Thread: Hub sheared!

  1. #1
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    Default Hub sheared!

    Left front hub sheared this afternoon at the IT Spectacular - at speed!. Tons of grease inside the wheel. Could that be from the CV joint? Which went first, the hub, or the CV?
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
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  2. #2
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    Bill,

    Quite likely you broke the hub first. Hubs and Bearings are Maintenance items on all race cars. FWD requires that they be replaced more often than RWD usually. I would also reccomend checking torque on ther axle nut before each on track session.
    Chris "The Cat Killer" Childs
    Angry Sheep Motorsports
    810 417 7777
    angrysheepmotorsports.com

    IT,SM,SS,Touring, and Super Touring

  3. #3
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    Default

    damn those mopar hubs...
    Chris Rallo "the kid"
    -- "wrenching and racing" -- "will race for food!" -- "Onward and Upward"

  4. #4
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    Quote Originally Posted by Rabbit07 View Post
    Bill,

    Quite likely you broke the hub first. Hubs and Bearings are Maintenance items on all race cars. FWD requires that they be replaced more often than RWD usually. I would also reccomend checking torque on ther axle nut before each on track session.
    Chris: Thanks. Think I'll look into the Green Bearings again. They don't have to be pressed in (can be changed at the track without having to take out the spindle) and they cost about the same as new bearings and having them pressed in.

    What should I check on the CV joint to repair it, or should I just go ahead and replace the half shaft?
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

  5. #5
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    Default

    Bill,

    Don't trust the stub shaft on the existing Halfshaft anymore. I would replace it. Try to get a NOS OEM shaft if possible or a remaned OEM. The cheap aftermarket ones from Autozone ect are trouble as I have found out.

    What I do is keep a set of axles and a spare set of front Kuckles already built up in the trailer with me.

    Cheers
    Chris "The Cat Killer" Childs
    Angry Sheep Motorsports
    810 417 7777
    angrysheepmotorsports.com

    IT,SM,SS,Touring, and Super Touring

  6. #6
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    Default

    Cool! Thanks, boss. I'll send you the video sometime. Only time the camera got to work all weekend, and all I got was 5 laps.

    It was interesting with about 5 or 6 guys starting behind me. My wife missed my first lap because she was so used to seeing me at the end of the pack!!!!!!!
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

  7. #7
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    What are the green bearings??? please send me some info on them.

  8. #8
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    Default

    Bill,

    Where did the hub break? Bearing? spindle? Can you grab some pictures of the failure?

    That is the first l-body hub failure that I can remember hearing about. I would be very interested in any other information you have. Where these new bearings/spindles or did they come with the car? Any idea how many track miles you have on them?

    As Chris already said, get a new halfshaft and obviously I would inspect the other side as well.

    I hope everything else is okay and easily repairable.
    ~Matt Rowe
    ITA Dodge Neon
    NEDiv

  9. #9
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    Default

    I busted a stock Neon hub after a season of circle tracking, followed by a season of ice racing on bolts. It never came all the way apart, I thought I'd killed a clutch or CV at first. The (*searching for proper terms now) flat portion of the hub that has the bolt circle cracked away from the center of the hub. It is still in place, but will rotate quite easily. I kept it as a souvenier of an odd failure. Or maybe a lucky failure- I quit driving before the wheel exited the chassis in an ever so exciting manner.

    IIRC, Mopar performance catalogue says you are to change the ACR hubs and bearings every 12 track hours.

  10. #10
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    I was 2 cars behind you when it happened...

    Sure was interesting back where I was so I expect it was really exciting for you.

    BTW...I have great video of the whole thing...
    Except I just got a ChaseCam and can't figure out how to post it yet.

    You coming to WOR games or the 24 at Nelson?

    Edit: No wrong person...It was the left REAR at turn 15 Mid-O
    (a yellow car that said Bishop something? on the side)
    Last edited by dlg208; 08-12-2008 at 07:25 AM.
    Dave Gills
    ITB Red Pinto #80
    Grove City, Pa.

  11. #11
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    Quote Originally Posted by dlg208 View Post
    I was 2 cars behind you when it happened...

    Sure was interesting back where I was so I expect it was really exciting for you.

    BTW...I have great video of the whole thing...
    Except I just got a ChaseCam and can't figure out how to post it yet.

    You coming to WOR games or the 24 at Nelson?
    Dave: Would love to see the video! Yes, it was exciting! I am watching my video right now. I am surprised that it snapped in a left hander as it was the left hub that failed - maybe when it unweighted.... I really thought that I had bought the wall that time for sure.

    I may be up to Nelson to instruct at the PDX. If not, I'll find someone who's coming my way.

    BTW, T&S got your home state wrong. They saw Grove City, and put OH instead of PA!

    Thanks for the note.
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

  12. #12
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    Quote Originally Posted by DaveBrooks View Post
    What are the green bearings??? please send me some info on them.
    Dave: That's Green Bearings, not green bearings! Green is the brand name. I got one when I bought the car. I'll need to dig and find the name of a distributor, I think there is one up near Toledo. The bearing/hub does not need to be pressed into the spindle - therefore you don't have to take the spindle off to change it. So it can be done at the track.

    When I find the info, I will send it to you.
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

  13. #13
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    Quote Originally Posted by Matt Rowe View Post
    Bill,

    Where did the hub break? Bearing? spindle? Can you grab some pictures of the failure?

    That is the first l-body hub failure that I can remember hearing about. I would be very interested in any other information you have. Where these new bearings/spindles or did they come with the car? Any idea how many track miles you have on them?

    As Chris already said, get a new halfshaft and obviously I would inspect the other side as well.

    I hope everything else is okay and easily repairable.
    Matt: As Streetwise said, the flat that holds the wheel bolts sheared away from the hub. Hub still turns, and there was enough rough areas that I could press it back together and winch the car back on the trailer. May have to lift the front off the trailer to get the car into the garage again.

    I will take some picks for you as soon as i get it into the garage.

    I had replaced both hubs and bearings when I bought the car - back in 02. But I did not get any track time until 2006. Best guess is that there was about 10 track hours on them.
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

  14. #14
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    Quote Originally Posted by dlg208 View Post
    I was 2 cars behind you when it happened...

    Sure was interesting back where I was so I expect it was really exciting for you.

    BTW...I have great video of the whole thing...
    Except I just got a ChaseCam and can't figure out how to post it yet.

    You coming to WOR games or the 24 at Nelson?

    Edit: No wrong person...It was the left REAR at turn 15 Mid-O
    (a yellow car that said Bishop something? on the side)
    Dang! Would have liked to see what that looked like from the outside.

    The spin that you cought was Dave Gran in the Sunday morning qualifying race! Yeah, his off was probably exciting, too!
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

  15. #15
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    Quote Originally Posted by RacerBill View Post
    Dave: That's Green Bearings, not green bearings! Green is the brand name. I got one when I bought the car. I'll need to dig and find the name of a distributor, I think there is one up near Toledo. The bearing/hub does not need to be pressed into the spindle - therefore you don't have to take the spindle off to change it. So it can be done at the track.

    When I find the info, I will send it to you.
    I would be interested in this also.
    Darryl Pritchett
    ITA #92 Dodge Neon
    2008 SE DP Champion
    2010 CFL Region ITA Champion

  16. #16
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    Getting closer. I need to dig out the hub and the box I've got buried in the spares bins.
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

  17. #17
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    A good rule of thumb is that a hub failure is caused by something getting loose--the nut holding the bearing pack 95% of the time.

    Unfortunately, that is always a "thrilling failure". At least now you may know it's coming if you felt anything strange just before it happened.

  18. #18
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    Quote Originally Posted by joeg View Post
    A good rule of thumb is that a hub failure is caused by something getting loose--the nut holding the bearing pack 95% of the time.

    Unfortunately, that is always a "thrilling failure". At least now you may know it's coming if you felt anything strange just before it happened.
    Joeg: Thank goodness is was just 'thrilling' and not expensive! And I will always remember to look up published advice (such as the handling guide from polybushings.com) before making any adjustments to tire pressures, etc.

    Well, the good news is that I will have to take the front suspension apart and I can check and see how to get a little more neg. camber up there.

    You guys get snow up there in Buffalo yet?
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

  19. #19
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    Lots of hail..I suppose that is close to snow!

    I have experienced two hub failures...ugh...each with a lap to go in the race. Finished each race (crawling), but the second time it happened, I destroyed a lot more parts than would be expected. These were Front FWD failures.

    The brake caliper and hose prevents complete wheel departure.

  20. #20
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    Default

    Here are a couple of pics.
    Attached Images Attached Images
    Bill Stevens - Mbr # 103106
    BnS Racing www.bnsracing.net
    92 ITA Saturn
    83 ITB Shelby Dodge Charger
    Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
    Simpson Performance Products - simpsonraceproducts.com

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