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Emyr

Member since Jul 2010 • Last active Sep 2017

Programmer, bike polo player, fatbike rider.

Welshman in Manchester.

Most recent activity

  • in LFGSS Cycling Club
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    Emyr

  • in Bikes & Bits
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    Yes...

    Normal MTB SpideRing: 49mm CL, 137mm spindle.
    FatCAAD spindle 23mm wider, 71mm CL, so the Fat SpideRing runs about 10mm further out that normal.

  • in Bikes & Bits
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    But yes, outboard RaceFace BSA30 in a shell that should be 100mm wide. FatCAAD uses 120mm BB30/PF30/whatever.

  • in Bikes & Bits
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    Nope, 1x on a 160m spindle, but with a narrower chainline than Fat CAAD's 71mm because that has a 190mm OLD rear, whereas my frame is 170mm OLD.

  • in Bikes & Bits
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    I've ordered a 51 gram 30T SS (not NW) titanium chainring:

    Includes some spacers as the titanium is a bit thinner at the splines than the stock spiders & SpiderRings, should let me tweak the chainline a bit.

  • in Mechanics & Fixin'
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    The rim's quite deep and not lightly built, so that will help spread loads across the spokes.

  • in Bikes & Bits
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    You need to add 0.65mm worth of thickness all round the tube.

    I'd use a layer of self-amalgamating tape (or insulation tape if you're cheap and you hate your bike, yourself and Tester), a few wraps of beverage can, then another layer of tape.

  • in Bikes & Bits
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    Do you also have the 5x110mm spider? I could do with knowing how far inboard the 104mm spider middle-ring runs compared with the 110mm spider. (I'd assume the 130mm spider would be the same offset as the 110mm, but hard to check)

  • in Bikes & Bits
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    Raceface BSA30 was about £28 on CRC last month. Some people reckon they don't last, but then some people manage to wreck Shimano HT2 bearings too...

  • in Mechanics & Fixin'
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    Is there any way of finding out before hand what spacers I'll need to run the Si Cranks in with a RF 73mm spindle in a BSA BB?

    Maths!

    Cannondale publish PDFs listing the spacers required for various applications.

    Scalpel PF30x73mm:
    137mm spindle
    DS: bearing shield (2mm?), 14mm spacer
    NDS: bearing shield (2mm?), wave washer, 1-3 shims (0.5mm), 19mm spacer

    So for BSA30x73mm, lose the bearing shields, make space for 10.5mm external cups:
    134.5mm RF spindle (call it 134mm for calculations)
    DS: 4mm spacer
    NDS: wave, shims, 9mm spacer.

    Your chainline will be ~1.5mm narrower than the same spider/ring on a Scalpel.

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