Crown

Board: Other Sports Cars Language: English Region: Worldwide Share/Save/Bookmark Close

Forum - Thread

    Mar 7, 2005 8:29:17 PM

    Grant
    Rennteam VIP
    Grant
    Loc: Denver, CO , United States
    Posts: 12586, Gallery
    Registered on: Aug 21, 2002

    Carbon Fiber - Magnesium Wheels

    Autovelocity (www.autovelocityinc.com) has CF-Mag wheels that are incredibly light. The 18x10.5" wheels are claimed to be double the strength of the stock Corvette Z06 wheels and only weigh 8 lbs/ea (forthcoming hollow titanium spoke version claimed to weigh 5.5 lbs). Price is $1.5k/ea for barrel and $200-$1,500/ea for the center section - can be custom ordered in any size and color.

    Mar 7, 2005 8:40:59 PM

    fritz
    Rennteam VIP
    fritz
    Loc: BaWü , Germany
    Posts: 10248, Gallery
    Registered on: Jul 23, 2003
    Reply to: Grant

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    Grant said:
    Autovelocity (www.autovelocityinc.com) has CF-Mag wheels that are incredibly light. The 18x10.5" wheels are claimed to be double the strength of the stock Corvette Z06 wheels and only weigh 8 lbs/ea (forthcoming hollow titanium spoke version claimed to weigh 5.5 lbs).



    Any kamikaze pilots out there ready to test these wheels?

    Mar 7, 2005 8:45:56 PM

    Grant
    Rennteam VIP
    Grant
    Loc: Denver, CO , United States
    Posts: 12586, Gallery
    Registered on: Aug 21, 2002
    Reply to: fritz

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    fritz said:
    Quote:
    Grant said:
    Autovelocity (www.autovelocityinc.com) has CF-Mag wheels that are incredibly light. The 18x10.5" wheels are claimed to be double the strength of the stock Corvette Z06 wheels and only weigh 8 lbs/ea (forthcoming hollow titanium spoke version claimed to weigh 5.5 lbs).



    Any kamikaze pilots out there ready to test these wheels?



    They claim that they survived 5 million impact cyle tests better than any alloy wheels...

    Mar 7, 2005 8:55:30 PM

    Carlos from SpainM
    Rennteam Moderator
    Carlos from Spain
    Loc: Spain. , Spain
    Posts: 21152, Gallery
    Registered on: Feb 9, 2003
    Reply to: Grant

    Re: Carbon Fiber - Magnesium Wheels

    Has anybody in competition used such a type of wheel construction? I would guess they'd be the first to invent and develop them if they'd work?
    Anyhow, very interesting to say the least...

    Mar 7, 2005 9:03:50 PM

    Grant
    Rennteam VIP
    Grant
    Loc: Denver, CO , United States
    Posts: 12586, Gallery
    Registered on: Aug 21, 2002
    Reply to: Carlos from SpainM

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    Carlos from Spain said:
    Has anybody in competition used such a type of wheel construction? I would guess they'd be the first to invent and develop them if they'd work?
    Anyhow, very interesting to say the least...



    Yes, if they survive the stresses of racing, then I would feel pretty confident of their strength. Many racing classes' rules probably prohibit their use, but maybe some types of racing would allow them? By using these and some PCCB-type brake rotors, one could really reduce this source of rotating and unsprung mass alot - this weight reduction is by far the most beneficial to acceleration, braking, and handling (significant improvement to lap times).

    Of course, a wheel failure at high speed is beyond dangerous...

    Mar 7, 2005 9:18:41 PM

    fritz
    Rennteam VIP
    fritz
    Loc: BaWü , Germany
    Posts: 10248, Gallery
    Registered on: Jul 23, 2003
    Reply to: Grant

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    Grant said:
    They claim that they survived 5 million impact cyle tests better than any alloy wheels...



    At the risk of sounding like a party pooper, I didn't find the "quality" of this company's web site to be very convincing.
    Who are they? What do they actually do? Are they based in Tulsa, OK, USA, or is there a Tulsa OK on Taiwan? Do Taiwanese companies have product liability insurance?

    I'll stop now. I sound too much like a p. p..

    Mar 7, 2005 9:29:37 PM

    Grant
    Rennteam VIP
    Grant
    Loc: Denver, CO , United States
    Posts: 12586, Gallery
    Registered on: Aug 21, 2002
    Reply to: fritz

    Re: Carbon Fiber - Magnesium Wheels

    Fritz - yeah, their website is crap, but the owner has published some seemingly credible reports on Lotus Elise, Honda NSX, and Ferrari websites. Yes, they are US-based (don't know if that's a good thing or not in your book )

    www.ferrarichat.com

    www.elisetalk.com

    Mar 7, 2005 9:39:13 PM

    fritz
    Rennteam VIP
    fritz
    Loc: BaWü , Germany
    Posts: 10248, Gallery
    Registered on: Jul 23, 2003
    Reply to: Grant

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    Grant said:
    Yes, they are US-based (don't know if that's a good thing or not in your book )




    Well, it beats Taiwan! Just kidding!

    It's just that the content and syntax of the web site text seemed far removed from Oklahoma.

    Thanks for the links.

    Mar 8, 2005 12:01:15 AM

    Moogle
    Rennteam Master
    Moogle
    Loc: Bay Area , United States
    Posts: 5019, Gallery
    Registered on: Aug 9, 2003
    Reply to: fritz

    Re: Carbon Fiber - Magnesium Wheels

    5-6 pound rims... oh man. i think ive finally found my rims

    Mar 8, 2005 10:30:35 AM

    jecey
    Junior
    jecey
    Loc: Belgium
    Posts: 121, Gallery
    Registered on: Dec 31, 2003
    Reply to: Moogle

    Re: Carbon Fiber - Magnesium Wheels

    friend of mine has that for his bike :
    http://www.ram.mc/wheels/BST/gallery/BSTgallery.htm

    Mar 8, 2005 11:26:12 AM

    Ryan in SD
    Senior
    Ryan in SD
    Loc: San Diego
    Posts: 604, Gallery
    Registered on: Nov 14, 2004
    Reply to: jecey

    Re: Carbon Fiber - Magnesium Wheels

    Yet another thing that makes me want to smack myself...why hasnt anyone thought of this before??? Like that tweel thingy...

    Or how about a carbon fiber tweel!! JK

    Mar 8, 2005 12:19:43 PM

    Carlos from SpainM
    Rennteam Moderator
    Carlos from Spain
    Loc: Spain. , Spain
    Posts: 21152, Gallery
    Registered on: Feb 9, 2003
    Reply to: jecey

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    jecey said:
    friend of mine has that for his bike :
    http://www.ram.mc/wheels/BST/gallery/BSTgallery.htm



    In bikes the advantage of the lower weight should much more noticeable than in a cars, not only because of the decrease unsprung weight and the suspension, but because since bikes turn by tilting into the curve, and the heavier the wheel the more resistance it offers to tilting, since the wheel is spinning it has a tendency to stand upright and avoid tilting, so the lighter the wheel, the more agile the bike becomes in the bends because there is less resistance of the wheel to stay upright due to the spinning. So its interesting, what do the MotoGP bikes use?

    Mar 8, 2005 10:08:54 PM

    fritz
    Rennteam VIP
    fritz
    Loc: BaWü , Germany
    Posts: 10248, Gallery
    Registered on: Jul 23, 2003
    Reply to: Carlos from SpainM

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    Carlos from Spain said:
    So its interesting, what do the MotoGP bikes use?



    What do they use? Magnesium? Titanium?

    Anybody out there who knows?

    Mar 8, 2005 11:43:01 PM

    Carlos from SpainM
    Rennteam Moderator
    Carlos from Spain
    Loc: Spain. , Spain
    Posts: 21152, Gallery
    Registered on: Feb 9, 2003
    Reply to: fritz

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    fritz said:
    Quote:
    Carlos from Spain said:
    So its interesting, what do the MotoGP bikes use?



    What do they use? Magnesium? Titanium?

    Anybody out there who knows?



    I always thought they were Forged and Magnesuim but now I'm not sure

    Mar 9, 2005 7:26:07 AM

    jandreas
    Junior
    jandreas
    Loc: STX , U.S. Virgin Islands
    Posts: 75, Gallery
    Registered on: Nov 6, 2002
    Reply to: Carlos from SpainM

    Re: Carbon Fiber - Magnesium Wheels

    There is a Dutch manufacturer that has had TUV approval of their carbon fiber truck wheels for the past year or so. It will be interesting to see if the autovelocity wheels are as durable.

    Mar 9, 2005 9:07:34 AM

    jecey
    Junior
    jecey
    Loc: Belgium
    Posts: 121, Gallery
    Registered on: Dec 31, 2003
    Reply to: jandreas

    Re: Carbon Fiber - Magnesium Wheels

    in Moto GP they use magnesium forged wheel, because the carbon is too stiff. Difficult to imagine that, but a magnesium or alu. alloy wheel has some deformations.
    After 2 or 3 hours of use, they replace the wheels.

    Mar 9, 2005 5:34:14 PM

    Grant
    Rennteam VIP
    Grant
    Loc: Denver, CO , United States
    Posts: 12586, Gallery
    Registered on: Aug 21, 2002
    Reply to: jecey

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    jecey said:
    in Moto GP they use magnesium forged wheel, because the carbon is too stiff. Difficult to imagine that, but a magnesium or alu. alloy wheel has some deformations.
    After 2 or 3 hours of use, they replace the wheels.



    Jecey - Why is it bad to be stiff? Is it a safety or a performance issue?

    Mar 9, 2005 10:29:40 PM

    fritz
    Rennteam VIP
    fritz
    Loc: BaWü , Germany
    Posts: 10248, Gallery
    Registered on: Jul 23, 2003
    Reply to: Grant

    Re: Carbon Fiber - Magnesium Wheels

    Quote:
    Grant said:
    Quote:
    jecey said:
    in Moto GP they use magnesium forged wheel, because the carbon is too stiff. Difficult to imagine that, but a magnesium or alu. alloy wheel has some deformations.
    After 2 or 3 hours of use, they replace the wheels.



    Jecey - Why is it bad to be stiff? Is it a safety or a performance issue?



    I'm guessing that Jecey, when describing carbon composite as being "stiff", is referring to its "brittle" character. Carbon composites tend to break up under high impact forces, instead of deforming as many metals and alloys would. Carbon composites do tend to absorb a lot of energy before breaking up, especially in relation to their weight.

    I suspect that, whereas a metal wheel which deforms under extreme loads might still tend to retain air, a wheel which shatters would not maintain pressure, and would thus allow the tire to collapse suddenly.

    Apr 14, 2005 5:38:08 PM

    Mithras
    Expert
    Mithras
    Loc: Toronto, Canada , Canada
    Posts: 1981, Gallery
    Registered on: Mar 16, 2005
    Reply to: fritz

    Re: Carbon Fiber - Magnesium Wheels

    I know Dymag in the UK has bike wheels in Carbon.

    ALMS & the FIA GT series for cars specifically prohibit carbon wheels (not sure who else does though).

    There was an interesting article I read awhile back about an engineering team that made its own carbon wheels when competing in the SAE university formula car race in Canada & the US.

    Apr 23, 2005 8:11:16 PM

    2BWise
    Newbie
    2BWise
    Loc: Cincinnati
    Posts: 1, Gallery
    Registered on: Mar 4, 2005
    Reply to: Mithras

    Re: Carbon Fiber - Magnesium Wheels

    I was at the Formula SAE competition and saw the school's carbon rims, they were pretty sweet, and then combined with their carbon body, wings, and undertray the car was basically a a rolling piece of carbon.
     
    Edit

    Forum

    1. All 

    Boards

     
    Board Subject Last post Rating Views Replies
    Porsche Sticky SUN'S LAST RUN TO WILSON, WY - 991 C2S CAB LIFE, END OF AN ERA (Part II) 4/17/24 7:16 AM
    GnilM     		781251 1798
    Porsche Sticky Welcome to Rennteam: Cars and Coffee... (photos) 4/7/24 11:48 AM
    Boxster Coupe GTS     		442663 565
    Porsche Sticky OFFICIAL: Cayman GT4 RS (2021) 5/12/23 12:11 PM
    W8MM     		263400 288
    Porsche Sticky OFFICIAL: Porsche 911 (992) GT3 RS - 2022 3/12/24 8:28 AM
    DJM48     		261737 323
    Porsche Sticky The new Macan: the first all-electric SUV from Porsche 1/30/24 9:18 AM
    RCA     		85863 45
    Porsche Sticky OFFICIAL: Taycan 2024 Facelift 3/15/24 1:23 PM
    CGX car nut     		5936 50
    Porsche The moment I've been waiting for... 2/1/24 7:01 PM
    Pilot
     
     
     
     
     
    		 881497 1364
    Porsche 992 GT3 7/23/23 7:01 PM
    Grant     		819135 3868
    Porsche GT4RS 4/21/24 11:50 AM
    mcdelaug     		392318 1454
    Porsche Welcome to the new Taycan Forum! 2/10/24 4:43 PM
    nberry     		392215 1526
    Others Tesla 2 the new thread 12/13/23 2:48 PM
    CGX car nut     		375209 2401
    Porsche Donor vehicle for Singer Vehicle Design 7/3/23 12:30 PM
    Porker     		369422 797
    Porsche Red Nipples 991.2 GT3 Touring on tour 4/11/24 12:32 PM
    Ferdie     		289975 668
    Porsche Collected my 997 GTS today 10/19/23 7:06 PM
    CGX car nut
     
     
     
     
     
    		 261885 812
    Lambo Huracán EVO STO 7/30/23 6:59 PM
    mcdelaug     		240749 346
    Lotus Lotus Emira 6/25/23 2:53 PM
    Enmanuel     		231260 101
    Others Corvette C8 10/16/23 3:24 PM
    Enmanuel     		221636 488
    Others Gordon Murray - T.50 11/22/23 10:27 AM
    mcdelaug     		169895 387
    Porsche Back to basics - 996 GT3 RS 6/11/23 5:13 PM
    CGX car nut     		141654 144
    BMW M 2024 BMW M3 CS Official Now 12/29/23 9:04 AM
    RCA     		118175 303
    Motor Sp. 2023 Formula One 12/19/23 5:38 AM
    WhoopsyM     		109354 685
    Porsche 2022 992 Safari Model 3/7/24 4:22 PM
    WhoopsyM     		84621 239
    AMG Mercedes-Benz W124 500E aka Porsche typ 2758 2/23/24 10:03 PM
    blueflame     		75387 297
    Porsche 992 GT3 RS 3/3/24 7:22 PM
    WhoopsyM     		54225 314
    Motor Sp. Porsche 963 3/16/24 9:27 PM
    WhoopsyM     		25478 237
    Ferrari Ferrari 296 GTB (830PS, Hybrid V6) 1/21/24 4:29 PM
    GT-Boy     		21230 103
    BMW M 2022 BMW M5 CS 4/8/24 1:43 PM
    Ferdie     		19588 140
    AMG G63 sold out 9/15/23 7:38 PM
    Nico997     		16645 120
    AMG [2022] Mercedes-AMG SL 4/23/24 1:24 PM
    RCA     		13919 225
    Motor Sp. 24-Hour race Nürburgring 2018 5/25/23 10:42 PM
    Grant     		11301 55
    126 items found, displaying 1 to 30.