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  1. #1
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    I am new to this community and found it searching for an ansewer to my problem. I have a 2000 Trek 720 Hybird bike. The rear wheel "folded up" om me when I was turning a corner slowly. I am looking for a replacement wheel and do not know who made this rim. I located some Vuelta Airline 1 wheel sets on E-Bay for about the same price my local dealer wants for just a rear rim.
    My question is this: Will my cassette work on any 700C rim? These Vuelta rims have Shimano RM-40 aluminum hubs.
    Will these rims work on a hybird bike and will they be a strong rim?
    Sorry to bother you, but I am leary of my stock rims after they folded over on me. I did get the rear wheel straightened, but the braking is horrible due to the bends in the edge.
    Last edited by so2315; 08-11-05 at 01:30 PM. Reason: update

  2. #2
    18 dog baby
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    Nope, your casette probably won't work on this wheelset. The altus group is for 9/8 speed systems, while the 2000 Trek 720 has a 7 speed casette. Sorry. I'm sure there's a way to make it work, if you use some spacers and what not, but I'm neither that intelligent nor mechanically inclined.
    Maybe your local wrench can help you out.
    But at any rate, since you're new to the forum, let me extend the obligatory NYCBikes warning: look out. Sometimes they suck.
    mah-ha

  3. #3
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    You can have your current hub rebuilt with any 700c rim of the correct spoke-count. Rims have a range of acceptable tyre widths. You should avoid racing rims, and go for touring/hybird style rims which are a bit wider. The cross section of a rim can vary from box to deep V shaped. Box is more compliant and comfortable, V is stiffer and more aerodynamic (only useful for v fast racers).
    If you go for new wheels, note that the space between the rear dropouts may be 130 or 135mm (probably the latter for a hybrid). Most pre-built wheels are 130mm.
    A good bike shop should take care of all these details but its helps to know.

  4. #4
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    Here is the wheel I am looking at: http://cgi.ebay.com/ws/eBayISAPI.dll...DME:B:AAQ:US:1
    You don't think it will work on a Hybird 720?

  5. #5
    Senior Member juicemouse's Avatar
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    Quote Originally Posted by so2315
    Here is the wheel I am looking at: http://cgi.ebay.com/ws/eBayISAPI.dll...DME:B:AAQ:US:1
    You don't think it will work on a Hybird 720?
    Can't say for sure, but I think it will work. Your Trek definitely has 135mm rear dropout spacing, so you need to find a wheel with a hub that matches that dimension. On Shimano's European site, I found a rear hub with an FH-RM40 part number as part of the Acera group. Unfortunately, there aren't any specs listed for it, and I couldn't find it anywhere else. I'd guess that since it's part of a pseudo-MTB group that the rear hub has 135mm spacing. Either ask the eBay seller or just go with your LBS for peace of mind.
    It is my belief that every person in this world has something to teach, and everything to learn.

    In memory of Jim Price (aka. sydney) ...

  6. #6
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    thanks for the quick replies. I decided to go to the local Trek Dealer. Although they do not have an exact match, it is close enough and you wouldn't know unless I told you.
    I also have the comfort of knowing it will be done right, and they are going to tune up the gear shifting for me as that has been problematic.

  7. #7
    cyclist forever robthebiker's Avatar
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    go to your local bike shop
    they should be able to help you
    RobTheBiker

  8. #8
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    UPDATE:
    I went to the LBS and explained the chain slipping to them. They made some adjustments and so I am good to go. I hopped on the bike in the showroom and it did it again!!! Upon further inspection it was found the stock Sun? cassette had a hirline crack in the small gear. Replaced it with a Shimano cassette and now everything is fine. Are the Sun cassetee's junk???

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