UN72

GaryGkn
GaryGkn Posts: 1,199
edited October 2007 in Workshop
Does anyone know where you can buy old stock UN72 sealed cartridge bottom brackets? I am looking for the UN72 that has removeable plasic cups as I only need the cartridge my cups are 26 tpi.

Much appreciated Gary

Comments

  • onbike 1939
    onbike 1939 Posts: 708
    These do come up on ebay but nothing there at the moment. Try Spa Cycles.
  • maddog 2
    maddog 2 Posts: 8,114
    CRC has UN73s

    any good?
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • Monty Dog
    Monty Dog Posts: 20,614
    Gary - I've got a UN72 in my garage superfluous to requirements - your're welcome to it for the price of postage. PM me if interested. It's standard BS thread and from memory, thread condition is good. FWIW UN72 has alloy cups - it's the 52 that had plastic cups that used to break.
    Make mine an Italian, with Campagnolo on the side..
  • GaryGkn
    GaryGkn Posts: 1,199
    Cheers Monty, I am trying to get one to fit my Raleigh Twenty.

    http://www.sheldonbrown.com/raleigh26.html
    http://house-of-yes.com/phil-wood-y-bottom-bracket/
    http://www.parker-international.co.uk/p ... roogle2481
    http://www.sjscycles.co.uk/product-Shim ... ket-30.htm

    Shimano UN72 With Phil Wood Rings

    It happens that Shimano UN72 bottom brackets can also be used with Phil Wood retaining rings. The UN72 model is the only Shimano series you can use this way, because the other Shimano models have the right side threads machined into the cartridge body.
    Unfortunately, for the 2003 model year, Shimano has replaced teh UN72 bottom bracket with the revised UN73 design. The UN73 is a fine bottom bracket, but it does not have a removeable mounting ring on the right side. The threads are part of the shell, as with the other Shimano cartridges, so the UN73 will not work with Phil Wood rings.

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