Debadge side of BS
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porsche gt3
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From: Newport Beach, CA, ARIZONA
08 clk63 amg black series
Ya kept the car, just got alot of paint and powder coating done. i think i am going to go to the willow springs event in 2 weeks and take it on the track for the first time, then i will see if i need more mods.
pics are of the side debadged as promised
pics are of the side debadged as promised
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porsche gt3
Thanks for the pics! Looks good! Any full car pics those black stock wheels look insane.
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From: Houston, TX
2012 ML350 Bluetec
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2008 BS
They are a matte/flat black...the lighting makes it look otherwise in the one pic.
I believe the work was done in Texas. I will ask my car guy to confirm as my only involvement is writing checks...
I believe the work was done in Texas. I will ask my car guy to confirm as my only involvement is writing checks...
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CLK 63 Black Series, 2009 S550, 2011 Range Rover Supercharged, BMW F800 GS Anniv Edition
Why is that ? I assume you're referring to the overageing that could occur and the resulting fatigue life of the wheel. It all depends though...Lots of factors to consider in regards to the exact metallurgy used in the forging process etc. Take a look at the following from the ASM Handbook:
356-T6: aging at 305 to 315 °F for 2 to 5 hours
Yield stress = 185 MPa
Ultimate stress = 262 MPa
Fracture strain = 0.05
356-T7: aging at 435 to 445 °F for 7 to 9 hours
Yield stress = 165 MPa
Ultimate stress = 220 MPa
Fracture strain = 0.06
Based on this data, a 400 °F treatment for less than 1 hour shouldn't reduce the fatigue strength significantly. And usually, wheels never need to baked in the oven more than 45 minutes.
356-T6: aging at 305 to 315 °F for 2 to 5 hours
Yield stress = 185 MPa
Ultimate stress = 262 MPa
Fracture strain = 0.05
356-T7: aging at 435 to 445 °F for 7 to 9 hours
Yield stress = 165 MPa
Ultimate stress = 220 MPa
Fracture strain = 0.06
Based on this data, a 400 °F treatment for less than 1 hour shouldn't reduce the fatigue strength significantly. And usually, wheels never need to baked in the oven more than 45 minutes.
Last edited by LZH; Jan 23, 2011 at 04:25 PM.
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From: SC Lowcountry, USA
AMG GT C Roadster
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2008 BS
Mellow,
If you go to a reputable place they can do the powder coating under 400 degrees which is not hot enough to have an impact on the wheels. I checked and my wheels were done at 350 degrees.
http://my.execpc.com/~davewrit/Powder.html
If you go to a reputable place they can do the powder coating under 400 degrees which is not hot enough to have an impact on the wheels. I checked and my wheels were done at 350 degrees.
http://my.execpc.com/~davewrit/Powder.html
Last edited by ecampbell; Jan 24, 2011 at 08:00 AM.
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Joined: Jun 2004
Posts: 409
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From: SC Lowcountry, USA
AMG GT C Roadster
Mellow,
If you go to a reputable place they can do the powder coating under 400 degrees which is not hot enough to have an impact on the wheels. I checked and my wheels were done at 350 degrees.
http://my.execpc.com/~davewrit/Powder.html
If you go to a reputable place they can do the powder coating under 400 degrees which is not hot enough to have an impact on the wheels. I checked and my wheels were done at 350 degrees.
http://my.execpc.com/~davewrit/Powder.html
It really depends on the powder used. Many have cure schedules of 400 degrees or more. You can't just do it for 350 instead... well, I guess you could but the cure time would probably go up to be much longer, and be exposed to high heat for longer periods.
I don't want to reduce any strength in my wheels and take the risk. They are already built at extremely low weights. At these temps for this long you are actually changing the characteristics of the aluminum.
This is why reputable forged wheel manufacturers like BBS, Fiske, and Champion don't recommend powercoating their forged wheels. I'm no metallurgy engineer, but I'd rather not take the chance.
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2008 BS
The debate to powdercoat or not has been going on for more then 10 years. i have never seen a powdercoat related failure that want also related to a pothole or some other hit (the rim would have failed whether no matter if had been powdercoated or not).
I agree curing at a high temperature but there is nothing wrong with curing at low temps and you CAN cure at 350.
Anyways, this is a back and forth discussion that can go on forever.
I agree curing at a high temperature but there is nothing wrong with curing at low temps and you CAN cure at 350.
Anyways, this is a back and forth discussion that can go on forever.
Last edited by ecampbell; Jan 24, 2011 at 10:08 AM.
