Results 1 to 12 of 12

Thread: 3 Piece Rims

  1. #1
    Join Date
    Jun 2005
    Location
    East Coast of the United States
    Posts
    11,806

    3 Piece Rims

    If a wheel is made of one piece, then how come rims sometimes have more than 1 piece, like sometimes I hear 3 piece rim, or two piece rim? If it's made in separate pieces, wouldn't that weaken the rim? So confused!

    What exactly does the extra pieces do?

    Thanks guys.

  2. #2
    Join Date
    Aug 2003
    Location
    NEW YORK
    Posts
    6,985
    I think this is what it is

    The outside ring is heated up so it expands and the center is placed inside it. Then when it cools down it tightens around the ring and it is welded usually by a machine, this makes them very strong.
    John says:
    so i had to dump acid into the block tank today
    i'm afraid to fap
    cause i got it on my hands

  3. #3
    Join Date
    Feb 2004
    Location
    Connecticut, USA
    Posts
    6,066
    Quote Originally Posted by baddabang
    I think this is what it is

    The outside ring is heated up so it expands and the center is placed inside it. Then when it cools down it tightens around the ring and it is welded usually by a machine, this makes them very strong.
    Yep.
    Also some pieces are screwed into place(some BBS wheels).

  4. #4
    Join Date
    Aug 2003
    Location
    NEW YORK
    Posts
    6,985
    Quote Originally Posted by johnnynumfiv
    Yep.
    Also some pieces are screwed into place(some BBS wheels).
    Really that dosent compromise strength? Well obviously not BBS wheels are great
    John says:
    so i had to dump acid into the block tank today
    i'm afraid to fap
    cause i got it on my hands

  5. #5
    Join Date
    Apr 2003
    Posts
    5,457
    I am not exactly sure as to why some wheels are made into 3 piece other than the fact that it allows for a specfic style of wheel to be made to different offset by bolting on different size shell. With possible benefit of in case of damage you might just need to replace the shell if they are bent...
    University of Toronto Formula SAE Alumni 2003-2007
    Formula Student Championship 2003, 2005, 2006
    www.fsae.utoronto.ca

  6. #6
    Join Date
    Jul 2003
    Location
    Northampton, Pennsylvania
    Posts
    7,989
    Big lip. Small lip. Adjustability ftw.
    [O o)O=\x/=O(o O]

    The things we do for girls who won't sleep with us.

    Patrick says:
    dads is too long so it wont fit
    so i took hers out
    and put mine in

  7. #7
    Join Date
    Jun 2005
    Location
    East Coast of the United States
    Posts
    11,806
    Thanks.

  8. #8
    Join Date
    Mar 2005
    Posts
    1,508
    For a time 3 piece wheels were lighter for their strength. The outside part of the wheel is spun steal. The hub was alloy. Basically this allowed engineers to use the thin, strong steal where it was optimal and aluminum or magnesium in the center where it's bulk was advantageous.
    Another benefit was repair. A three piece wheel could be disassembled after a wreck. This isn't a big concern for street cars but it is for race cars. The three part wheels I’m familiar with have been bolt together wheels.

  9. #9
    Join Date
    Aug 2005
    Location
    New York City
    Posts
    2,057
    it seems to me, not sure but is a built wheel cheaper then a forged becuase well forge, u need a block and just gets chunks cut and drilled out and laser cut. time and money and waste. but puttin pieces seems cheaper. can this be verified. sorry for the ands. lol
    Gone:
    09 Ducati Monster 696
    09 Audi Q5 3.2
    03 Infiniti G35 Sedan
    07 Honda Civic Coupe LX 5spd

    Current:
    10 BMW 335d
    12 Audi Q5 2.0t
    10 VW Jetta TDI
    11 Ducati Monster 796

  10. #10
    Join Date
    Feb 2004
    Location
    Connecticut, USA
    Posts
    6,066
    You still have to manufacture the pieces though.

  11. #11
    Join Date
    Feb 2005
    Location
    Location: Location: (UK)
    Posts
    2,496
    Standard alloys you get on most cars are made with much cheaper metal than wheels used in racing, so more metal needs to be used to give them strength and they end up weighing only slightly less than steel wheels.

    In my experience Peugeot are the worst, but all of their standard wheels weigh more than other manufacturers.
    PPC - Put a V8 in it!

  12. #12
    Join Date
    Apr 2003
    Posts
    5,457
    Quote Originally Posted by coolieman1220
    it seems to me, not sure but is a built wheel cheaper then a forged becuase well forge, u need a block and just gets chunks cut and drilled out and laser cut. time and money and waste. but puttin pieces seems cheaper. can this be verified. sorry for the ands. lol
    The centers and the shells still needs to be made. The centers can be CNC machined from a billet or forged still. While the shells are spunned. The cost saving though comes from the fact as I mentioned before, by mating to different spunned shells(and most manufacturers makes the shells in variaties of sizes and combo), they can accomodate different dimension fairly easily. While a forged/cast one piece are limited by the mold, and retooling costs a lot of money. In those cases then you need to resort to adapter or spacer....
    University of Toronto Formula SAE Alumni 2003-2007
    Formula Student Championship 2003, 2005, 2006
    www.fsae.utoronto.ca

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. The GT gets rims!!!
    By werty in forum User's rides
    Replies: 13
    Last Post: 12-12-2005, 03:54 PM
  2. Truck Photoshoot #2: GT gets rims
    By werty in forum Multimedia
    Replies: 22
    Last Post: 11-11-2005, 05:08 PM
  3. Stock steel rims in alloy?
    By QBridge in forum Miscellaneous
    Replies: 5
    Last Post: 10-09-2005, 03:32 AM
  4. Replies: 1
    Last Post: 08-18-2005, 12:21 PM
  5. New Momo Rims
    By elmajul in forum User's rides
    Replies: 5
    Last Post: 05-03-2004, 04:22 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •