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  1. #1
    Senior Member Monkey Face's Avatar
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    Colnago Ace - English or Italian bottom bracket?

    I'm waiting for delivery of a 2010 Colnago Ace that has a FSA Mega Exo bottom bracket for a Gossamer Megaexo Compact chainset.

    I want to order a crankset upgrade and change from compact to regular, can anyone tell me what thread Colnago uses on the Ace - English 68mm or Italian 70mm?

    I thought I'd seen somewhere that Colnago have switched to English, but I may be mistaken.

    Also - while we're here - do I need to add any links to the chain if I'm going from 50 to 53? (I'm keeping the cassette at 12-25.)

    Thanks.

  2. #2
    Senior Member Retro Grouch's Avatar
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    Shouldn't be too hard to figure out and frankly, if there's any doubt at all, the bike that you're working on is your most reliable source for this kind of information.

    1. Measure the width of the frame's bottom bracket shell. 68 mm = English. 70 mm = Italian.
    2. Loosen the old bottom bracket. If the drive side has a left hand thread, it's English. If it's a right hand thread, it's Italian.

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    the left side is always right hand thread so remove that first and id the bb shell before removing the right side

  4. #4
    Senior Member Retro Grouch's Avatar
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    Relative to the chain link question:

    It really depends on how the chain was sized originally. For no more trouble than it is to resize the chain, I'd do it.

    I'd tell you how (there's several ways), but that's one of those "popcorn" tread issues and I don't want to be the first to post. I'll let somebody else go first so I can show them some arcane situation in which another way might be better.

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    depends on how the chain was sized originally. if it was big-big method then you need to add links. test the length with the new ring and you will know if you need to add or not

  6. #6
    Senior Member Monkey Face's Avatar
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    Quote Originally Posted by Retro Grouch View Post
    Shouldn't be too hard to figure out and frankly, if there's any doubt at all, the bike that you're working on is your most reliable source for this kind of information.

    1. Measure the width of the frame's bottom bracket shell. 68 mm = English. 70 mm = Italian.
    2. Loosen the old bottom bracket. If the drive side has a left hand thread, it's English. If it's a right hand thread, it's Italian.
    Google throws up zilch - that's why I'm here.

    I wonder if anyone can actually tell me which it is, because the store I ordered it from is closed and I want to order a new crankset over the weekend, before I get (and am able to measure for myself) the bike.

  7. #7
    Bianchi Goddess Bianchigirll's Avatar
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    Quote Originally Posted by Retro Grouch View Post
    Shouldn't be too hard to figure out and frankly, if there's any doubt at all, the bike that you're working on is your most reliable source for this kind of information.

    1. Measure the width of the frame's bottom bracket shell. 68 mm = English. 70 mm = Italian.
    2. Loosen the old bottom bracket. If the drive side has a left hand thread, it's English. If it's a right hand thread, it's Italian.
    the OP is still awaiting the arrival of the frame in question. I would be really suprised if it is not English. is the frame carbon?
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte SOLD, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  8. #8
    Senior Member Monkey Face's Avatar
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    Quote Originally Posted by Bianchigirll View Post
    the OP is still awaiting the arrival of the frame in question. I would be really suprised if it is not English. is the frame carbon?
    It is carbon BG. Thanks.

    I'd be ashamed to admit to you that the Colnago is replacing a Bianchi Infinito - which it is - but because my wife has an Infinito that she hardly uses (same size as mine), I decided to sell one of them and dip my toe into a first Colnago (and pocket the change as it happens).

    If the Ace is anywhere near as good as the Bianchi it'll be a great bike, but just so there's not too close a comparison I'm going 53/39 (proper gearing) on the Colnago.

  9. #9
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by Bianchigirll View Post
    the OP is still awaiting the arrival of the frame in question. I would be really suprised if it is not English. is the frame carbon?
    That's what I think too but sometimes 1 measurement is worth 1,000 guesses. Another alternative would be to order one of each and return the bottom bracket that doesn't work.

  10. #10
    biked well well biked's Avatar
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    The Taiwan-built Colnagos such as the CLX 2.0's are English thread, and since the Ace is also Taiwan-built I would expect it to be English thread as well. I don't know about the high end Italian-built carbon models such as the new C59, it might well be Italian threaded. We have a 2010 Master X Light in our shop, it's still hand brazed in Italy and has Italian threads.

  11. #11
    Senior Member Monkey Face's Avatar
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    I'm obsessing as always - scouring eBay like I can't wait.

    The reality is that there's no post 'til Monday, so I can find out for sure then, but thanks for all your input.

    I think it does sound like English WB - why outsource everything to Taiwan for cost purposes and then not standardise something like the BB shell? (I'd expect that of the French maybe, but that's another bee in another bonnet!)

  12. #12
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    Wait until you have the frame. The delay can't be that much and it will save the cost and aggrivation of ordering and returning the wrong bb and crank.

    If you are considering buying on e-bay, thare is a chance you will get the wrong type anyway, even if you order the right one.

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