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  1. #1
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    Can we just call it 27.5?

    Hey all, after riding a sweet proto 27.5er the other day, and having owned a 5" travel 29er for a whole 3 weeks i'm really looking foreward to a mid sized wheelset on a 160ish travel do it all trailbike.

    I'm in a shop all day trying to explain what the heck 650b is and why. Can we just come up with a catchy name for it?

    I've been in this gig for 20 years now and i honestly don't know what 650b is. I did sell 26x1 3/8 and 27x1 1/4 Schwinns back in the day though

    I see Enve, Intense, Schwalbe and others are trying to use "27.5" Unless someone has a better name i'd say lets go with it.

    I'm going to start a bike brand called Sevener Because it just rolls off the tongue! Not.
    Giant Reign Advanced 27.5/Rockshox Pike/Sram XX1
    Giant STP/ Rockshox Revelation
    Salsa Mukluk/Rockshox Bluto/Sram X1

  2. #2
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    Do you know what 700c is?

    I'm for sticking with 650b, or just B.
    Quote Originally Posted by banks
    That is one big f'n dude!
    Yes I am!

  3. #3
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    I would love to see the chart, or the history of 700c, 650a,b, and xyz as well.

    I see 700, 584 and 698, where is 650? 584 + a road tire? My point exactly.

    Giant Reign Advanced 27.5/Rockshox Pike/Sram XX1
    Giant STP/ Rockshox Revelation
    Salsa Mukluk/Rockshox Bluto/Sram X1

  4. #4
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    I see 700 as a cyclocross tire, not a road tire where it is commonly used. Your point isn't much of one.

    5 years of so we've referred to it as 650b, and now we change because some people don't get it? Mountain bike was a brand name just like Kleenex and it stuck to an entire activity, mountains or not. Why not just let 650b, be.
    Quote Originally Posted by banks
    That is one big f'n dude!
    Yes I am!

  5. #5
    GJDinoBiker
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    Quote Originally Posted by IF52 View Post
    Do you know what 700c is?

    I'm for sticking with 650b, or just B.
    I'm for B

  6. #6
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    I prefer 650b or six-fitty
    My Bike: http://forums.mtbr.com/showpost.php?...3&postcount=49

    On-One Whippet 650b XC machine

  7. #7
    GJDinoBiker
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    Quote Originally Posted by dhbomber View Post
    I prefer 650b or six-fitty
    too many syllables

  8. #8
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    Quote Originally Posted by dhbomber View Post
    I prefer 650b or six-fitty
    I like six-fifty too

  9. #9
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    ...not sure what the OP has been doing for 20 yrs and not know about standard wheel sizes....You are not going to find many if any shops that are in this realm yet, they are dependent on the industry. You can make your own 6" travel 650B bike today, I am on my third build in that category. Weyless 67, Jamis XAM2, now Santacruz Butcher.
    Last edited by Morpheous; 05-22-2012 at 11:27 AM.

  10. #10
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    Quote Originally Posted by krispy@go-ride.com View Post
    I would love to see the chart, or the history of 700c, 650a,b, and xyz as well.

    I see 700, 584 and 698, where is 650? 584 + a road tire? My point exactly.

    650b is really old, something like 50-60 years. It was use in Europe for touring bikes so the the size comes from the rim diameter plus a larger touring tire. The rim size made a bit of a comeback in the late 80s/early 90s in the form of custom road bikes for small riders, women in particular. I don't know the exact dates but you get the general idea.
    Only two infinite things exist: the universe and stupidity. And, I am unsure of the universe
    - Albert Einstein

  11. #11
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    How about two seven point fiver? Or even six hundred fifty B 'er. Six five oh'er?
    "Your opinion may vary, but it's stupid." -Rich Dillen

  12. #12
    swag ho Administrator
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    I think the naming has had 5 years to bake. 27.5 has lost maybe cause it has a silly decimal point.

    The 650b ship has sailed and there's no turning back.

    fc

  13. #13
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  14. #14
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    Twenty-seven half or 650b. I think twenty-seven half sounds more mtb and 650b more roady, but
    either is fine by me as long as they keep giving us more options.

  15. #15
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    I prefer 650B over 27.5, It sounds a lot better to me. Funny thing is I can't quantify that opinion really.
    I think maybe it was introduced to me by that name way back when and anything else just sounds wrong.

  16. #16
    www.derbyrims.com
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    How about following motorcycle wheel sizing labels.... call the wheels by their rim sizes in inches, 22, 23, and 24.5.

    Whatever... 650b has a sophisticated sound to it... 27.5 would fit better for current sales sophistry

  17. #17
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    Sixfifty B

  18. #18
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    It would make much more sense to describe wheels with the rim size, because the tire diameter fluctucates so much due to tire size. 559mm, 584mm, and 622mm. Or even rounding to 56cm, 58cm, and 62cm. It may be too late for that.

    I think 27.5" is stupid. Doesn't sound good, and makes people think that the rim size exactly splits the difference between 26" + 29", when it is really much closer to 26".

  19. #19
    Dude, got any schwag?
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    Really? No offense to the OP or any of you, but who gives a rip? When we're all out on the trail, is it important at all what we call it?

    SHARP = SHutup And Ride Pal.
    Billy

    Speed is sweet, it's like an avenue to
    ... Shredtopia!

  20. #20
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    Quote Originally Posted by thad View Post
    It would make much more sense to describe wheels with the rim size, because the tire diameter fluctucates so much due to tire size. 559mm, 584mm, and 622mm. Or even rounding to 56cm, 58cm, and 62cm. It may be too late for that.

    I think 27.5" is stupid. Doesn't sound good, and makes people think that the rim size exactly splits the difference between 26" + 29", when it is really much closer to 26".
    MUCH closer?

    559
    584 (+25mm/4.5%)
    622 (+38mm/6.5 %)

    I guess we need to switch to 650A (590mm BSD) to use 27.5"?

    Much like everything else 650b, its going to be the manufacturers that set the terms here, and 27.5 seems to be gaining traction from what I see.

    27.5" is easier to explain to the customer that doesn't have any idea what 650b is (26", 27.5", 29" makes more sense thatn 26", 650B, 29").

    It also prevents confusion with 650C (571mm BSD). 700c works because 700a, b, and d are all practically obsolete. 700B (635 BSD) tires are out there, but everyone calls them 28".

  21. #21
    mnoutain bkie rdier
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    six fitty yo

  22. #22
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    Quote Originally Posted by mobaar View Post
    MUCH closer?
    559
    584 (+25mm/4.5%)
    622 (+38mm/6.5 %)
    In comparison to 26":
    584/559= 1.0447 4.5% larger
    622/559= 1.1127 11.3% larger

  23. #23
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    Quote Originally Posted by francois View Post
    I think the naming has had 5 years to bake. 27.5 has lost maybe cause it has a silly decimal point.

    The 650b ship has sailed and there's no turning back.

    fc


    The 27.5 names wreaks of MBA and their stupid aversion to the metric system...the whole world compares weights of bike parts in grams. Except MBA. WTS?

    (Yes, I get that 650b doesn't really mean anything.)

  24. #24
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    Quote Originally Posted by thad View Post
    In comparison to 26":
    584/559= 1.0447 4.5% larger
    622/559= 1.1127 11.3% larger
    And? My point was that 650b is pretty close to the middle of 26/29. Saying its not close ENOUGH to call it 27.5 is pretty silly. Should we go with 27.16"?

    27.5" makes perfect sense in the overall scheme of 26" and 29" wheels/tires we have currently.

  25. #25
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    Eh, my point is that 26" and 29 wheels are not actually 26/29 in diameter. Totally depends on tire size. 26 X 1.9 < 2.2 < 2.5 < 3.0
    So why not label the rim size, and the tire size, and then everything is accurate.

    If you must use some arbitrary inch size that is not accurate, 26", 27", 29" is closer.

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