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Thread: 650b tubes?

  1. #1
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    650b tubes?

    I need to get some tubes. Is a 650c * 35-43 mm going to work?
    Can i use a 26" tube? Where to get?
    Thanks

  2. #2
    TNC
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    Depending on what size 650B tire you're using, I like to get a true 2.35/26" standard tube to use for a NeoMoto/Blunt setup. I'm not talking about some heavy duty or DH/FR level tube. The common standard tube you get from shops and such that are often classified as 1.95/2.25 or thereabouts will work too, but they fit a little tighter, and I think the tiny bit bigger 2.35 standard tube works better at only a few grams heavier. You almost have to look in a wholesaler's catalog to find this tube, as most shops don't stock them. Look at the weights of the tubes to make sure you're not ordering...or buying from stock...a very heavy DH/FR model. I think the last one I bought was a standard Kenda tube...just slightly larger at 2.35, and only a few cents more expensive. I used this tube setup on my Neo/Blunt setup last year for two weeks at Moab, and it was totally reliable. I'm using the ghetto tubeless setup now on my Neo/Blunt setup, and it's holding up.

  3. #3
    Old man on a bike
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    I just used regular old 26" tubes for my new 650b wheels, works fine.
    "...the people get the government they deserve..."
    suum quique

  4. #4
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    650b tube

    Quote Originally Posted by TNC
    Depending on what size 650B tire you're using, I like to get a true 2.35/26" standard tube to use for a NeoMoto/Blunt setup. I'm not talking about some heavy duty or DH/FR level tube. The common standard tube you get from shops and such that are often classified as 1.95/2.25 or thereabouts will work too, but they fit a little tighter, and I think the tiny bit bigger 2.35 standard tube works better at only a few grams heavier. You almost have to look in a wholesaler's catalog to find this tube, as most shops don't stock them. Look at the weights of the tubes to make sure you're not ordering...or buying from stock...a very heavy DH/FR model. I think the last one I bought was a standard Kenda tube...just slightly larger at 2.35, and only a few cents more expensive. I used this tube setup on my Neo/Blunt setup last year for two weeks at Moab, and it was totally reliable. I'm using the ghetto tubeless setup now on my Neo/Blunt setup, and it's holding up.
    Well i looked at the tube that was using for a couple of months a 26 by 1. I had a flat on the trail and put in a 26 by 1.5-2 from performance brand and it lasted about 1/2 mile and the tube exploded with about a 5 inch split. Maybe i did not instal right on the trail.
    Setup is blunt and 2.3 neo motos
    thanks+

  5. #5
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    You will be fine using regular 26er tubes. When I used tubes on my 29er I always used 26er tubes and had no issues.

  6. #6
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    I actually found a set of 28" tubes in a prototype wheelset. Don't ask me where they come from. I personally run 26" tubes.

  7. #7
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    650b tubes

    Quote Originally Posted by pwh4130
    I actually found a set of 28" tubes in a prototype wheelset. Don't ask me where they come from. I personally run 26" tubes.
    I was just a little confused because when i first got the wheelset on the tube box it said 650b but the tube was 26 by 1.5. In my rush to change tube i must have not got tube all inside tire and it blew out 1/2 mile later. Put in a 26 by 2.1 tube tonight with a little more care and it is working fine.
    Thanks

  8. #8
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    been running a 26x1.5-2.3 Spec tube for the last three years in the front on my rigid 69er, knock on wood I haven't flatted in 3 years on that bike
    Quote Originally Posted by thefuzzbl
    aluminium has a tendency to fail when you need it most. i.e. you end up with a bad day.

  9. #9
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    tubes

    Do tubes have a shelf life? I have been tubless for about 4 years until the 650bs.
    I used a 4 year old performance tube and the tube held air for two days in garage.
    Tonight i put the bike in truck and the tube had a blow out about a 4 or 5 inch cut.
    I am ready for the ghetto tubeless.
    I did not have any problems with the tubes i first got for the 650b's.

  10. #10
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    I think Conti makes 28" tubes. I recall installing some on a set of 29" wheels and they were a bit small....I figured back then they'd be great for 650B. Finding them ready for sale at a shop is harder to come by than the 2.35"x26" tubes TNC recommended, which is what I also use.

  11. #11
    Doesntplaywellwithmorons!
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    I use Kenda Superlight 26 x 1.9/2.1 sized tubes in my Neo-Motos. If they were a 26" tire I'd just use the 26 x 1.5/1.75 size like I have in all my 2.35 tires for years.
    I don't post to generate business for myself or make like I'm better than sliced bread

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