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  1. #1
    Ut In Omnibus Glorificetu TimothyH's Avatar
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    American Classic MTB Race 29 Tubeless

    Does anyone use American Classic MTB Race 29 Tubeless wheels for gravel on a cross or gravel bike?


    I don't even know if the question makes sense. I know little about mountain bikes and even less about MTB wheels. The description of the wheels say that they are Shimano/Sram compatible. Is there a difference between road/cross cassettes and what goes on these wheels? Would these wheels accept an ultegra or 105 road cassette?
    http://atlantabikerides.blogspot.com/
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    It's a little confusing but the information is there on the righthand column of specs. So ... these wheels are not rim-brake compatible. The hubs look they come in different flavors. And down the page, the rims are 28mm wide, so you couldn't use (for example) 23mm road tires.

    When in doubt, contact them directly and tell them exactly how you want to use them.

  3. #3
    Senior Member Kopsis's Avatar
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    29er MTB rims are the same effective rim diameter (ERD) as 700c road rims. Assuming the CX/gravel bike has disk brakes (and the standard 135mm OLD rear hub spacing), these should fit. Note that those wheels are available with three different dropout styles (standard QR, 15mm thru axle, and 9mm thru axle), so you'd need to know what the bike takes (front and rear may be different). Shimano splined 10/11 speed freehubs are the same for road and MTB so you can mount a road cassette with no problems.

  4. #4
    Ut In Omnibus Glorificetu TimothyH's Avatar
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    Quote Originally Posted by Kopsis View Post
    Shimano splined 10/11 speed freehubs are the same for road and MTB so you can mount a road cassette with no problems.
    This is what I wanted to know. thanks.
    http://atlantabikerides.blogspot.com/
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  5. #5
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    Those would be so fantastic with Schwalbe S-One 30c tires, I bet! If I ran discs, I'd be looking hard at those...
    As it is, I run two sets of AC tubeless wheels, Argent and Victory30.
    Chaad--'95 DeKerf Team SL, '02 Lemond Buenos Aires, '05 Novara Buzz, '73 Schwinn Collegiate, '06 Mountain Cycle Rumble, '09 Dahon Mariner D7, '12 Mercier Nano, '12 Breezer Venturi

  6. #6
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    Quote Originally Posted by TimothyH View Post
    This is what I wanted to know. thanks.
    Not quite, 11 speed road cassettes/freehubs are wider than a 10/11 speed MTB, so if your looking at using current 11 speed Shimano road cassettes (5800/6800) with this wheelset, it won't work.

  7. #7
    Ut In Omnibus Glorificetu TimothyH's Avatar
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    Quote Originally Posted by chaadster View Post
    Those would be so fantastic with Schwalbe S-One 30c tires, I bet! If I ran discs, I'd be looking hard at those...
    As it is, I run two sets of AC tubeless wheels, Argent and Victory30.
    This is what got me thinking...

    American Classic Race 29?er Wheelset Review |


    Quote Originally Posted by jimc101 View Post
    Not quite, 11 speed road cassettes/freehubs are wider than a 10/11 speed MTB, so if your looking at using current 11 speed Shimano road cassettes (5800/6800) with this wheelset, it won't work.
    Yes, I'm looking at current Shimano 11 speed and am under the impression that people run wheels on CX bikes. Do you think they just run the MTB cassette? Will that work with a road chain? Dropout spacing and thru axle/QR aside, how do you think they run these wheels on a CX bike? Or am I completely off base here?

    I'm asking this all out of ignorance and really appreciate the replies.
    http://atlantabikerides.blogspot.com/
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  8. #8
    Ut In Omnibus Glorificetu TimothyH's Avatar
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    Looked at the article/review and the links to the bike he uses. He has the wheels on a Frankenbike build off a 29'er frame. That's how he runs these wheels. It's basically a mountain bike.

    What the heck is a Monster Cross Bike? |

    He says that three people he knows are running these wheels on CX bikes tho.
    http://atlantabikerides.blogspot.com/
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  9. #9
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    Quote Originally Posted by TimothyH View Post
    Yes, I'm looking at current Shimano 11 speed and am under the impression that people run wheels on CX bikes. Do you think they just run the MTB cassette? Will that work with a road chain? Dropout spacing and thru axle/QR aside, how do you think they run these wheels on a CX bike? Or am I completely off base here?

    I'm asking this all out of ignorance and really appreciate the replies.
    The Am Classic website shows these as available with Shimano/SRAM 9/10/11 speed hubs. I would expect that the hub would take 11-speed road cassettes and use a spacer for mounting 10-speed cassettes. You probably want to explicitly confirm that since Shimano 11-speed mountain hubs actually fit on a 10-speed hub (by overhanging the hubshell).

  10. #10
    Ut In Omnibus Glorificetu TimothyH's Avatar
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    Quote Originally Posted by gsa103 View Post
    The Am Classic website shows these as available with Shimano/SRAM 9/10/11 speed hubs. I would expect that the hub would take 11-speed road cassettes and use a spacer for mounting 10-speed cassettes. You probably want to explicitly confirm that since Shimano 11-speed mountain hubs actually fit on a 10-speed hub (by overhanging the hubshell).
    Yeah, I guess that's the question right there.

    Gonna bookmark this thread and will post back if I ever get an answer.
    http://atlantabikerides.blogspot.com/
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  11. #11
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    Quote Originally Posted by gsa103 View Post
    The Am Classic website shows these as available with Shimano/SRAM 9/10/11 speed hubs. I would expect that the hub would take 11-speed road cassettes and use a spacer for mounting 10-speed cassettes. You probably want to explicitly confirm that since Shimano 11-speed mountain hubs actually fit on a 10-speed hub (by overhanging the hubshell).
    It doesn't say anything about 11 speed road. 11 speed MTB is a different spec to 11 speed road, and the two aren't compatible. From reading the documentation on the link, everything says MTB, nothing says road/CX in any way. Confirmation from the manufacture would be key in this case.

  12. #12
    Team Water Andy_K's Avatar
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    I wouldn't be so sure that a rim that wide would work in a tubeless setup with CX/gravel tires. It's my understanding that narrower tires are prone to burping on wide rims.

  13. #13
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    Quote Originally Posted by jimc101 View Post
    It doesn't say anything about 11 speed road. 11 speed MTB is a different spec to 11 speed road, and the two aren't compatible. From reading the documentation on the link, everything says MTB, nothing says road/CX in any way. Confirmation from the manufacture would be key in this case.
    11-speed MTB is kind of a mish-mash of specs at the moment. Shimano XT/XTR have only 11-40 or 11-42 cassettes and will fit onto a standard 8/9/10 speed hub. SRAM 11-speed uses the XD drive hub for their 10-42 cassette. If you want a narrower range cassette the only option is a SRAM/Shimano/Campy road cassette. I suspect many CX racers are using road 11-32 cassettes. Also given that 11-speed hubs are backward compatible, I expect that all newer wheels would be designed for the eventual 11-speed transition.

  14. #14
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    I'm confused. The freehub body will take a road cassette, so what's the issue?
    Chaad--'95 DeKerf Team SL, '02 Lemond Buenos Aires, '05 Novara Buzz, '73 Schwinn Collegiate, '06 Mountain Cycle Rumble, '09 Dahon Mariner D7, '12 Mercier Nano, '12 Breezer Venturi

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    11spd road cassettes are wider than Shimano 11spd mountainbike cassettes and will not fit on a MTB freehub. So it isn't clear if those wheels can or cannot fit an 11spd road cassette just because they can take an road 10spd and 11spd mtb cassette.

  16. #16
    Ut In Omnibus Glorificetu TimothyH's Avatar
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    The author of the review of these wheels wrote:

    Three of these cyclists are running the wheels on their CX bikes (for gravel racing), such is their improved performance over stock CX wheelsets.

    I asked in the comments section and the author replied:

    The newer versions of these wheels with the 11 speed body (I believe any hub shell marked from D onwards is 11 speed compatible) work just fine with road or CX type cassettes. For example, two of my teammates are running various combinations of the SRAM 1170 cassette, in conjunction with a SRAM Red 22 drivetrain. I cannot speak for the older generation wheels, but perhaps one of those 3rd party cassettes that fit 11 gears into the space of 10 will work. Worst case scenario, call American Classic with your questions about which generation of wheel is specifically 11 speed compatible.

    Guess I'll take his word for it and nice of him to reply.

    The bike I'm looking at is a 2015 CAADX. It comes with Maddux CX 2.1 Disk wheels. Note sure how wide they are but they have Sammy Slick 38's on them.


    -Tim-
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  17. #17
    just keep riding BluesDawg's Avatar
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    Jayson O'Mahoney (JOM) knows his ****. He's an accomplished racer, leader of a strong gravel racing team and a regular contributor on Bike Rumour. If he says something works, you can believe it has been tried and proven. His team regularly dominates the gravel events in Middle Georgia that I help produce (Red Clay Ramble) and others I participate in (Sack O' Suds, Fried Green 50, Honey Bee Stinger and more).
    The more you ride your bike, the less your ass will hurt.

  18. #18
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    Quote Originally Posted by FrozenK View Post
    11spd road cassettes are wider than Shimano 11spd mountainbike cassettes and will not fit on a MTB freehub. So it isn't clear if those wheels can or cannot fit an 11spd road cassette just because they can take an road 10spd and 11spd mtb cassette.
    I think there is only one Shimano 11 speed freehub body, and both road 11spd and mtb 11spd cassettes will fit. Sure, XT 11spd cassettes may need a spacer on an 11 spd freehub, but that doesn't have any relevance to whether a road 11 speed cassette fits on an 11spd freehub body, which it does.
    Chaad--'95 DeKerf Team SL, '02 Lemond Buenos Aires, '05 Novara Buzz, '73 Schwinn Collegiate, '06 Mountain Cycle Rumble, '09 Dahon Mariner D7, '12 Mercier Nano, '12 Breezer Venturi

  19. #19
    Ut In Omnibus Glorificetu TimothyH's Avatar
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    Quote Originally Posted by BluesDawg View Post
    Jayson O'Mahoney (JOM) knows his ****. He's an accomplished racer, leader of a strong gravel racing team and a regular contributor on Bike Rumour. If he says something works, you can believe it has been tried and proven. His team regularly dominates the gravel events in Middle Georgia that I help produce (Red Clay Ramble) and others I participate in (Sack O' Suds, Fried Green 50, Honey Bee Stinger and more).
    Cool. Thanks a bunch @BluesDawg! I guess that settles it then.

    I'm in Cobb County, northwest Atlanta. Hope to get out on some of the gravel up here in the wildlife management areas and especially some of the forest service roads around the Cohutta.

    Almost bought a bike last night.
    http://atlantabikerides.blogspot.com/
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