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Did I order the wrong size wheel ?

  • 16-10-2009 4:53pm
    #1
    Super Freak
    Registered Users, Registered Users 2 Posts: 620 ✭✭✭


    This....
    http://www.chainreactioncycles.com/Models.aspx?ModelID=42917

    For my Trek 4500 Mountain bike. I broke a couple of spokes and rather than get it repaired I ordered a new wheel, cheaper and quicker, or so I thought.

    I just spent an hour changing over the cassette but I can't get the tyre on:mad: I've measured the new and old diameter and the new wheel is 10mm in diameter larger.

    Is this the correct wheel for a 26" Mountain bike? Customer support is now closed for the weekend at CRC.

    Kieran


Comments

  • #2
    kona
    Registered Users, Registered Users 2 Posts: 7,525 ✭✭✭kona


    Super Freak wrote: »
    This....
    http://www.chainreactioncycles.com/Models.aspx?ModelID=42917

    For my Trek 4500 Mountain bike. I broke a couple of spokes and rather than get it repaired I ordered a new wheel, cheaper and quicker, or so I thought.

    I just spent an hour changing over the cassette but I can't get the tyre on:mad: I've measured the new and old diameter and the new wheel is 10mm in diameter larger.

    Is this the correct wheel for a 26" Mountain bike? Customer support is now closed for the weekend at CRC.

    Kieran

    discontiued item..you sure thats the wheel? you do have to push the bead of the tyre into the rim, they are never the same size in a MTB


  • #3
    Super Freak
    Registered Users, Registered Users 2 Posts: 620 ✭✭✭Super Freak


    Yes positive, It was on special offer and is now discontinued.

    No problem taking the tyre off, no tools needed. I can't even get the tyre close even with levers and a lot of force.

    Thanks Kona.


  • #4
    Lumen
    Registered Users, Registered Users 2 Posts: 31,245 ✭✭✭✭Lumen


    According to Sheldon...

    26" MTB wheel has a 559mm BSD.
    A 700c road wheel has a 622mm BSD.

    bead-seat-diameter.jpg


  • #5
    Super Freak
    Registered Users, Registered Users 2 Posts: 620 ✭✭✭Super Freak


    Old wheel BSD = 560mm

    New wheel BSD = 570mm :confused:

    Thanks Lumen. Going to head in to Halfords now to see what they have. I won't be spending a lot as cheap wheels can be had on CRC.

    Kieran


  • #6
    kona
    Registered Users, Registered Users 2 Posts: 7,525 ✭✭✭kona


    Super Freak wrote: »
    Old wheel BSD = 560mm

    New wheel BSD = 570mm :confused:

    Thanks Lumen. Going to head in to Halfords now to see what they have. I won't be spending a lot as cheap wheels can be had on CRC.

    Kieran

    Well, youve seen a good reason not to buy cheap wheels. What size tyres do you have? Unless they are waaaaaay off, im sure any mechanic could put them on.

    Sometimes some air in the tube can help


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  • #7
    Lumen
    Registered Users, Registered Users 2 Posts: 31,245 ✭✭✭✭Lumen


    Super Freak wrote: »
    New wheel BSD = 570mm :confused:

    According to Sheldon's chart, that's most likely a 650c triathlon/shortarse wheel (571mm BSD).


  • #8
    kona
    Registered Users, Registered Users 2 Posts: 7,525 ✭✭✭kona


    put the wheel in the frame bare, and see if the brakes line up with the rim.


  • #9
    Super Freak
    Registered Users, Registered Users 2 Posts: 620 ✭✭✭Super Freak


    Thanks guys,

    Didn't buy in Halfords, I'll call CRC on Monday and see what they have to say. The tyres are 26" mountain bike tyres and there is no way they are going on. Can't even get the first bead over. I can get these tyres fully on and off my MTB wheel without tools.

    I know I bought cheap, It's only for my hack mountain bike, don't want to spend a lot on it as I'll probably replace it next year.

    Kieran


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