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  1. #1
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    New fenders for an old bike with 650A wheels?

    I want to put modern fenders on one of my old bikes, which has 650a wheels. All of the options I've seen are for mountain bike 26" or 700c. Which would be the better option?

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    I reckon you should be able to fit ones intended for either size wheel. 650A is 590mm bead seat diameter, compared to the 559mm bead seat diameter of a standard 26" wheel. That's only 31mm difference in diameter, or 15.5mm difference in radius, as long as the 650A and 26" rims have the same width of tyre mounted on them. That's less than 3/4 " of difference, which is within the adjustment range of most mudguards with adjustable stays, so a decent set for a 26" wheel ought to fit yours. A set with fixed-length stays might not, depending how large your tyres are.

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    S'Cruzer pierce's Avatar
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    further, a 650a wheel likely has a much skinnier tire than a 26", so the OD of the tire+wheel is likely pretty similar. of course, 26" fenders tend to be really wide, and might look strange on a 650a x 28 or whatever.

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    Low car diet JiveTurkey's Avatar
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    What's the tire width?
    Quote Originally Posted by slopvehicle View Post
    Not wearing a helmet makes me more aware of my surroundings. I find myself anticipating the hardness of concrete 50 or 100 feet in front of me, it's almost a zen-like connection between my face and the pavement.

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    Plastic fenders? Not much choice there. Metal fenders? There are 650b fenders which are for all intents and purposes interchangeable with 650a fenders. Aluminum fenders can be manipulated to get different radius curves. I've spread fenders for 559 (26" decimal) to fit 507 (24" decimal).

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    Senior Member Medic Zero's Avatar
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    Quote Originally Posted by krome View Post
    Plastic fenders? Not much choice there. Metal fenders? There are 650b fenders which are for all intents and purposes interchangeable with 650a fenders. Aluminum fenders can be manipulated to get different radius curves. I've spread fenders for 559 (26" decimal) to fit 507 (24" decimal).
    +1 Honjo makes beautiful fenders for 650, IIRC so does Velo Orange.
    ISO: 22" GT Rebound frame, year 2000 model

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    Quote Originally Posted by JiveTurkey View Post
    What's the tire width?
    37, I think. I don't want to spend a ton of money on this, and I'm looking for black fenders. Most of the metal ones I've seen are bare metal or chrome, and are also expensive...so I was thinking along the lines of SKS, Planet Bike, or similar.

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    Senior Member Bill Kapaun's Avatar
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    Quote Originally Posted by agmetal View Post
    I want to put modern fenders on one of my old bikes, which has 650a wheels. All of the options I've seen are for mountain bike 26" or 700c. Which would be the better option?
    650A has a tire with a nominal 26" DIAMETER.
    Same as MB's.

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    S'Cruzer pierce's Avatar
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    you might see if you can find a pair of the Blackburn 26" fenders to look at. I have the Blackburn 700x45's on my hybrid, and really like them. they have an aluminum liner, but are black plastic on the outside, and a nice stay adjustment system. they seem to run a bit narrow

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    Low car diet JiveTurkey's Avatar
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    650A x 37mm has an overall diameter of 664 mm, which is about the same as the dia. of 26 x 2.1" (666 mm).

    As long as the 26" fenders aren't too wide for the frame and fork, I'd go with those.

    Hybrid fenders are typically 45 mm wide and meant for 28-35 mm tires. These will probably work if the 26" fenders are too wide. They're meant for a larger diameter, but the fenders should be able to bend to fit.
    Quote Originally Posted by slopvehicle View Post
    Not wearing a helmet makes me more aware of my surroundings. I find myself anticipating the hardness of concrete 50 or 100 feet in front of me, it's almost a zen-like connection between my face and the pavement.

  11. #11
    tcs
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    Wald 89-26 lightweight chromed steel fenders are natively designed for 26x1 3/8 (a.k.a. ISO37x590mm a.k.a. EA3 a.k.a. 650A) wheels and tires. Your LBS can get 'em; they're widely available on the 'net.
    "When man first set woman on two wheels with a pair of pedals, did he know, I wonder, that he had rent the veil of the harem in twain? A woman on a bicycle has all the world before her where to choose; she can go where she will, no man hindering." The Typewriter Girl, 1899.

    "Every so often a bird gets up and flies some place it's drawn to. I don't suppose it could tell you why, but it does it anyway." Ian Hibell, 1934-2008

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    S'Cruzer pierce's Avatar
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    phew, the Wald stuff I've seen has been rather poor quality. can't say I've seen those fenders though.

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    Both the blackburn and sks fenders I'm currently working with on a 26" build seem to be radiused slightly bigger than 559. Not a problem pulling them back in --but they might be just fine for 590. And I plan on using the blackburn now for a 650B (584) that looks like it will fit just fine.
    David Green, Naperville, IL USA "The older I get, the better I used to be" --Lee Trevino

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    Quote Originally Posted by agmetal View Post
    I want to put modern fenders on one of my old bikes, which has 650a wheels. All of the options I've seen are for mountain bike 26" or 700c. Which would be the better option?
    The 26" Planet Bike ones with adjustable rods for mounting should do fine for your A's which as said by others don't normally run really wide tires. They have a good bit of range of adjustment. Width wise, I use them for Schwalbe Marathon Plus tires at 26" x 1 3/4" (which is a tall and very robust tire, but not terribly wide) and it fits and looks good...visually sort of looks like a smaller 650B roll.

    As always; putting off the shelf fenders on most any bike will require the do-er to spend some time sorting cats and tuning the mounts. Not atypical to need to bend a few things, go fetch a different length bolt, or get a Sheldon Bolt, etc., to get it all just right. For the adjustable rod mounts, you can end up with the rods sticking up out of the top quite a bit which I feel is unsightly, dangerous, and easy to get snagged on. After I sort the cats and have given it a trial run, I mark the length, tag them and then take them off to be cut to length and to coin the tops a bit with a file before assembling them for final use.

    Hope that helps.
    /Kerry

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    S'Cruzer pierce's Avatar
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    that bit about the rods sticking up is a big reason I like the blackburns. you have to cut the stays off to the approximate length required, and then they fit into a compression clamp for final adjustment, so there are no tips sticking up. I used the cutter in the base of a pair of full sized vice grips, this worked OK, but a a double-hinged mini-bolt cutter worked much better. or a dremel cutoff wheel.

  16. #16
    tcs
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    Quote Originally Posted by pierce View Post
    phew, the Wald stuff I've seen has been rather poor quality. can't say I've seen those fenders though.
    Gran Bois fenders, $189
    Wald fenders, $18
    "When man first set woman on two wheels with a pair of pedals, did he know, I wonder, that he had rent the veil of the harem in twain? A woman on a bicycle has all the world before her where to choose; she can go where she will, no man hindering." The Typewriter Girl, 1899.

    "Every so often a bird gets up and flies some place it's drawn to. I don't suppose it could tell you why, but it does it anyway." Ian Hibell, 1934-2008

  17. #17
    Senior Member Medic Zero's Avatar
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    Quote Originally Posted by tcs View Post
    Gran Bois fenders, $189
    Wald fenders, $18
    That seems a little high for Honjos. I thought they were running about $150, I seem to recall paying right about $100 for my set on sale.
    ISO: 22" GT Rebound frame, year 2000 model

  18. #18
    S'Cruzer pierce's Avatar
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    Quote Originally Posted by tcs View Post
    Gran Bois fenders, $189
    Wald fenders, $18
    Blackburn fenders, $35

  19. #19
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    I like the look of those Blackburn ones, may have to see if I can find those locally.

    @tcs: the Wald fenders are chrome. I want black.

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    Quote Originally Posted by tcs View Post
    Gran Bois fenders, $189
    Wald fenders, $18
    TCS; Recommend check www.amazon.com; and search on Brandname +Fenders such as "Planet Bike" +fenders. Or just see them all with search on Bike +Fenders. Last time I bought them (2011) they ran $29, but were on sell for $19.99/pair with free Prime Shipping. So I bought a half-dozen sets in 700C and 26". If they weren't on sale, I would have checked ebay and Nashbar. They mounted very well, look right, and have held up perfectly in my use (but I am not an extreme rider...).

    //Kerry

  21. #21
    tcs
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    Quote Originally Posted by ksisler View Post
    TCS; Recommend check...
    Actually, a comprehensive reading of this thread will show:
    1) I'm not the OP. I don't need a set of fenders.
    2) I was just informing the OP of another, inexpensive option for his self-described 'old' bike...which as it turned out, would have been unnecessary if the OP had been clear on all requirements.
    3) I was confirming the quality on the Wald fenders might be sketchy - they're really cheap.
    4) I actually don't set prices for Bicycle Quarterly's store, nor do I control any other retailer's overstocks, sales prices or sales timing.

    No good deed goes unpunished on Bike Forums.
    "When man first set woman on two wheels with a pair of pedals, did he know, I wonder, that he had rent the veil of the harem in twain? A woman on a bicycle has all the world before her where to choose; she can go where she will, no man hindering." The Typewriter Girl, 1899.

    "Every so often a bird gets up and flies some place it's drawn to. I don't suppose it could tell you why, but it does it anyway." Ian Hibell, 1934-2008

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