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today do i hear?sigpicComment
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I'm in the midst of a 72 hour work week. I can probably have dean come drop it off with his set tonight.1989 325is / 2.7, 274 cam, e30 M3 5-lug
1989 LN106 Hilux / 3.0TD SFA
1974 2002tii / stock
2002 IS300 / 5spd LSDComment
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Cool. Then i can pick up the redrilled style 5 centers and drop off omars lips in the morning.
I'm in a materials testing lab class this semester and need to come up with a final testing project. I was considering testing the strength of different fiberglass weaves.Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.
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The hubs don't get anywhere near hot enough to spheroidize the steel in the time frame the adapters seem to be failing.Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.
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Playing devils advocate even under extreme track conditions, I'd imaging glowing rotors might/might not be enough to effective alter the heat treatment, but that coupled with the forces on the bolts perhaps. Even further playing the devil's advocate one moderately extreme track session just hot enough to alter the heat treatment could cause a prolonged failure taking months to develop. That would be indicative of an altered crystalline structure and a ductile failure surface. Also are the bolts made of steel or some other metal?
Otherwise just remove that variable from my original post and it's still an interesting project.Last edited by mcr_driver; 03-21-2013, 01:54 PM.
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Your not properly thinking about heat transfer. Your lug nuts don't glow on the track. Or rotor hats for that matter. Only the parts that are in direct contact with the friction surface.
Plus a couple seconds of a somewhat hot temp won't do anything. Temp needs to be within 60% of melting temperature
Graph is for aluminum but you get the idea
Last edited by einstein57; 03-21-2013, 02:08 PM.Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.
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Has anyone used those ebay camber plates? Decent? Garbage? I'm in the market for someComment
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Your not properly thinking about heat transfer. Your lug nuts don't glow on the track. Or rotor hats for that matter. Only the parts that are in direct contact with the friction surface.
Plus a couple seconds of a somewhat hot temp won't do anything. Temp needs to be within 60% of melting temperature
Graph is for aluminum but you get the idea
http://aarontan.org/MSE250/Images/Fig11_27.jpg
I've seen guys with Alcon/AP brakes get their calipers up to temps over 400-500 degree's with extreme track duty. Granted these are extreme cases I'm not stating you're wrong I'm just reaching for an extreme scenario. All it takes to prove a theory valid is one application where it proves just that.
But now we're way off base of the original topic, failed bolts that shouldn't be failing. Mike needs to get you those failed bolts for some forum hilarity and hopefully even a bit of money back to mike. I remember when he told how it failed at castro's and the look of DAFUQ on Chris' face :rofl:
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One more exam one more exam one more exam one more.
1991 325iS turbo
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jou ma se poes in 'n fishpaste jar.
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I really do have my old lab coat packed away :rofl: Those courses were the most fun when I was at Bosco.
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