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  1. #1
    Ron Shiseiji's Avatar
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    Feb 2007
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    Alexandria, VA
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    1988 Schwinn High Sierra, 2006 Montaque Hummer, 2006 Fuji Crosstown 1, 2012 Civilian Corduroy Rebel
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    Chainwheel on Tracer® Romax Crank

    I am asking for advice on replacing my bent chainwheel. My '06 Montaque Hummer3 has a Tracer® Romax crank with a 42/34/24T chainwheel. I think the chainwheel has been bent since day one, but it took me till now to put a dial indicator on it. Run-out is a total of .04", from +.0185" to -.0125 in a run of about 2" across the crankarm on the 42T to .030" on the 34T and .08" on the 24T. I believe these are 170 mm crankarms.

    A friend advised I pull the chainwheel and use a vice to avoid lateral pressure on the crankset. It looks to me like the chainwheel is riveted (pinned??) to the crankarm not screwed like my '88 High Serra. So should I just get a new crank/chainwheel? If so, should I go for matching the teeth or just a decent price? I often have to climb a 1,000' 20% grade in 24/32 or 19.5 gear inches, but as the road is closed, I do 50' or so switchbacks. The rest of the time I mostly ride 34/11 or 80.4 gear inches to avoid the extream ends of the range though riding 24/11 generally an issue as far as my stamina.

    As always,

    TIA

    Ron

  2. #2
    Taking "s" outta "Fast" AfterThisNap's Avatar
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    the components on the montague/hummer are of extremely poor quality . I would just use a crecent wrench and bend the offending chainring out to where shifting quality is tolerable.
    Otherwise take it to your LBS and ask for a cheap mountain crankset. Alivio or Deore, both are significant upgrades, but again, the rest of the components won't be up to par.
    Carries suspicious allegiance to Brooklyn Machine Works.

  3. #3
    JRA...
    Join Date
    Oct 2003
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    philly
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    trek 520 & 736, DeRosa Professional, Fuji Professional, Raleigh International 3-speed, Saronni (any info people?), Humber 3-speed, Raleigh Sports, Carlton Grand Prix coming soon!
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    unless it's causing problems, leave well enough alone.

  4. #4
    Ron Shiseiji's Avatar
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    My reply has bombed 3X... anyway, thanks all. Why am I not surprised on the quality? I wondered when I couldn't find anything on the crank set. After reading the first reply, I decided to call Montaque to see if they would cut me a deal on a crank set. It is causing problems as the spread is big enough I can't get the index set. So I called Montaque, was very polite, went through the history, how little I have been able to ride the bike, my troubleshooting with the dial-indicator, mentioned I was unhappy with the quality when I found I couldn't remove the chainwheel. rivets faked to look like screw heads etc. They were pretty insistent I take it to a LBS, but I mentioned how I had purchased the dial indicator and buying a crank tool is not an issue. Paying the LBS $150+ ? is an issue. Played my "divorced Dad, 3 kids" card (all true) and how as an aircraft mechanic I just want to know what size the crank set is 'cause I am not spending money on something I can do myself, especially given how much I paid for the bike, less then 20 miles on it etc. When he asked where I had got the bike it came out I am in the Army. So, he is checking to see about a crankset to give me a "deal" on. Will see what happens next.

    Thanks again, am open to suggestions on what brand crank tool to get.

    Ron

  5. #5
    Senior Member Bill Kapaun's Avatar
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    Feb 2007
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    Mid Willamette Valley, Orygun
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    If they send you a free one, hopefully it's not worse

  6. #6
    Ron Shiseiji's Avatar
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    Yea Bill, my thought too. I have been doing some pricing, seems like I can get at least the next (minor) level up for < $90. I am 6'1" so wondering if I should try a set of 175mm. I am pretty ignorant (but ignorance is repairable, stupidity can be tough) so need to make sure I get the right parts. I am back to my orginal question to Montaque: What size is the Bottom Bracket? Are they generic for my purposes?

    I have found a Shimano Deore FC-M530 Crankset 48x36x26 for a Octalink V2 BB and a
    Shimano FC-M470 Crankset 44x32x22 Spline with no mention of what BB it goes on. Does that mean it is a British/I.S.O. ?

    Ron
    Last edited by Shiseiji; 02-23-07 at 02:39 PM.

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