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  1. #1
    Vintage Bike Fan
    Join Date
    Dec 2011
    Location
    Hollywood, CA
    My Bikes
    Nishiki Cresta current Commuter Project, Miyata 1200, Trek Cirrus, Peugeot Montreal Express, Motobecane Roadie, Trek 1000 Aluminum 58cm ~ Nishiki Competition, Tri-A, Peugeot Canyon Express
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    Replacing the small chainwheel on a 12 speed road bike

    I own a few repair books and spoke with a couple of the local mechanics at the bike co-op and all of them tell me that I have to remove the crank in order to r&r the small chainwheel. But, I looked at the chainwheels and the crank and it looks like I can remove the CW's without pulling the crank... I kept looking and looking and I was convinced that I didn't need to remove the crank in order to change the CW's. But... I'm a rookie working on bikes... What do I know... So... I bought a crank puller, I bought the chainwheel nut wrench... and so I now have all the tools just in case I'm wrong and need to pull the crank.

    Well lo and behold... I didn't need that chainwheel special wrench as there was no problem loosening the CW nuts & bolts, however, the wrench was only $3 and I'm sure I'll need it on some of my other bikes. And... since I didn't need to pull the crank... I didn't need the crank puller and this turned into a VERY simple job needing only the 5mm allen wrench to do the job.

    No doubt in many instances the crank might need to be removed, however, I just want to tell people, that this is not always the case and I'd probably guess that a MAJORITY of cases, the crank will not need to be removed when replacing a chainwheel on a 2 CW road bike.

    My case, I have a 52t/42t and wanted to replace the 42t with a 39t and that was a piece of cake.
    Nishiki Tri-A ~ My favorite everyday rider
    Peugeot '85 Canyon Express ~ My freight hauler w/rear rack & panniers
    Nishiki Bravo MTB ~ My ugly duckling... So ugly no one steals it when I leave it overnight at the Metro station

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    Bikes Needing New Owners
    Project Bike - Trek Cirrus 520 '87 56cm ~ Trek 1000 Aluminum 58cm Ready to ride ~
    Miyata 1200 100% original except seat/pedals ~ Miyata 712 ~ Nishiki Competition '73 Ready to ride ~ Motobecane ~ Peugeot

  2. #2
    Bianchi Goddess Bianchigirll's Avatar
    Join Date
    Apr 2009
    Location
    Camp Hill, PA
    My Bikes
    Too many to list here check my signature.
    Posts
    20,223
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    I have done that many times, it is simply a matter of what model the crank is. I think on some of the newer ones, and older odd stuff like TA and Nevar, you really do need to remove it. also it is always possible some of the people you wre talking to simply assumed you were talking about the granny ring when you used the term inner ring.
    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

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