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  1. #1
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    New question here. Swtch between 11-32 and capreo?

    What issues will I encounter if I switch from a wheelset with a 11-32 cassette to a wheelset with a Capreo 9-26 cassette? Is it just a matter of a derailer adjustment? Or will chain length need to be adjusted?

    I'm thinking about a road wheelset for my hardtail that uses the capreo and a mountain set that uses the 11-32. I foresee making the switch maybe 1 or 2 times a month. I plan to get a light wheelset for the road since my hardtail is pretty light at about 22 pounds with mountain wheels and tires. I figure I can get it to around 20 with lighter tires and wheels. So if the capreo swap is easy I can raise the gearing for the road at the same time.

    Another option is to swap to 700 cc rim for the roadset but I have v-brakes meaning I'd need to move them each time I switch. Do the adaptors for this 700-26 brake swap work as well as advertised?

  2. #2
    MTJ
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    Why?

    To specifically answer the questions you asked: The chain will probably be ok as long as you carefully avoid cross-chaining. You'll know as soon as you have the new wheel on, and you probably have 2 or 3 links you can safely remove anyway. The derailleur will need a little tweaking, but probably not much - the hubs won't have exactly the same spacing, so you'll have to tweak your barrel adjusters and maybe your limit screws.

    I'm not going to try to talk you out of it if you're just doing it for the sake of doing something different, but there are better ways to accomplish what you're trying to do. A 9 tooth cog is a huge gear on a 26 inch wheel. What chainrings are you running? I used to run a 46 tooth big ring and could do about 33mph in the 46-12, my biggest gear at the time (on 700c wheels). A 44-11 would be actually a slightly higher gear, so the same rpm gets me to 34+ mph. Even if I adjust that for skinny tires on 26 inch wheels, we're still looking at 28-30 mph. How fast do you need to go?

  3. #3
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    Why? Good question. I'm really just thinking ahead and saying what if. See, I picked up biking last October. At the time, I could not picture myself riding more than 10 miles at a time but now I'm doing centuries. Yea, right now I have no need - and could not take avantage of - more gear but what about later? I'm too inexperienced to know I'll still feel that way in six months. I'm committed in my head to purchasing a wheelset for use on the road with this bike and was toying around with the capreo idea to provide a little room to grow... That might not come to pass but I'm not sure there is any downside, it's not going to cost any more - probably less. It'll be a little heavier and I may end up never going to the 10 or the 9 tooth ring but I'm not sure it's going to hurt anything. With a 22 tooth small ring in the front I think I'll be able to climb any road hill around here.

  4. #4
    Nouveau Retrogrouch SuperModerator
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    You do realize the Capreo hub/cogs are designed for small wheel (16-20") bikes so they can have "normal" gearing without needing huge chainrings?


    There is no good reason to use the setup with 700c wheels. The wheelset would be of little use for your current or any future bikes IMO. If/when you buy a road bike it will have wheels of at least the same quality and be appropriately geared.

    This is all ignoring that mtb rear hubs are 135mm wide and road hubs are 130mm.
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  5. #5
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    Quote Originally Posted by shiggy
    You do realize the Capreo hub/cogs are designed for small wheel (16-20") bikes so they can have "normal" gearing without needing huge chainrings?


    There is no good reason to use the setup with 700c wheels. The wheelset would be of little use for your current or any future bikes IMO. If/when you buy a road bike it will have wheels of at least the same quality and be appropriately geared.

    This is all ignoring that mtb rear hubs are 135mm wide and road hubs are 130mm.
    Point taken but we're talking about using a mountain bike on the road - something it wasn't really designed for so that shouldn't weigh too heavily that the Capreo wasn't "designed" for this. Capreo's hubs are 135 mm like mountain bikes and both of the small wheeled folders I own (so I have other possible uses for the hub if the mountain bike on the road thing is a waste of time and effort.). And it has a gear setup more like a road bike than a mountain bike - less overall range with closer ratios on the gears. And mountain bikes are not geared as high as road bikes - something the capreo addresses with the 9 tooth cog. Kinda seems like a good fit to me. Seems that I'm in a minority on that opinion though. No one over at bikeforums seems to think this makes sense either. hmmm.... food for thought ...

  6. #6
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by ride-a-day
    Point taken but we're talking about using a mountain bike on the road - something it wasn't really designed for so that shouldn't weigh too heavily that the Capreo wasn't "designed" for this. Capreo's hubs are 135 mm like mountain bikes and both of the small wheeled folders I own (so I have other possible uses for the hub if the mountain bike on the road thing is a waste of time and effort.). And it has a gear setup more like a road bike than a mountain bike - less overall range with closer ratios on the gears. And mountain bikes are not geared as high as road bikes - something the capreo addresses with the 9 tooth cog. Kinda seems like a good fit to me. Seems that I'm in a minority on that opinion though. No one over at bikeforums seems to think this makes sense either. hmmm.... food for thought ...
    You need to consult a gear chart
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  7. #7
    MTJ
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    If I can chime back in here

    I'll expand on Shiggy's statement there. Assuming you run a 90rpm cadence and are using 1.5" smooth tires on 26 inch mtb rims, a 44-9 combo would equal 32.4 mph. 110 rpm would put you over 40 mph. You probably couldn't generate enough torque to spin either of those rpms unless you were headed down a steep hill. . It's just too big a gear.

    Not to mention the extreme stress you're going to put on your drivetrain. You're going to be putting all of that torque through 4 teeth on the cogset. That's it. That's a lot for 4 little teeth to handle. The smaller the cog, the smaller the chainring, the greater the wear.

    Do you have any road bike experience? The comment you made about the 9-26 having close spacing like a road cassette doesn't jive - I ride a 12-23 on my road bike, and the widest range I know is a 12-27, which is still significantly smaller than the 9-26 of the Capreo. A 26 inch wheel with a 1.5" tire is only 5% smaller in circumference than a 700c wheel with a 23mm tire, and you're going way overboard trying to compensate for the difference.

    Here's the best concrete example I can give you. Time Trial bikes use wheels that are basically the same diameter as mountain bikes (ok, they're 12mm bigger). A rider in the Tour de France uses an 11-21 cassette and a 53 or 54 tooth chainring, so their top gear is about 4.9:1. Your 44 tooth chainring and 9 tooth cog are about the same ratio. So if you can push the same gear that Jan Ullrich does, go for it. Otherwise it's just too big a gear.

    I hope you know we're not trying to beat you up, this just isn't a feasible idea.

  8. #8
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    No - I didn't feel like I was being beat up on but I really didn't see why every one was saying it was a bad idea. Thanks for taking the time to explain it. I'm not getting that from looking at a gear chart - but your explanation makes good sense.

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