• Question - I’m building a Kepler Disc and would really like to give 650b a try.
    I was thinking of using 700c with fenders for winter, taking fenders off and swapping out wheels for 650b in the summer.
    But is there any point in having 2 wheelsets? I’ve got my CAAD10 for good weather so this would be used for basically anything else, winter, gravel, canal paths and such.

  • imo if you've got a good weather bike just build the kepler with plus 650b and guards. Perfect for winter and rough stuff. No need for the 700c wheelset.

  • Just stick with 650b, they're already perfect for the winter, it's lighter, it's stronger, a lower BB is handy etc. and you can always get those 700x60mm mudguard which actually cover a 650b 48-50mm tyres well with ample room.

  • I've got a Kepler disc and have a 700c wheelset, but i've not used them since I went 650b. I leave the 700c 50mm Gilles Berthoud fenders on all year - i'm not sure that 65mm would fit at the bridge without a decent amount of cutting.

  • I’ve started with 700c wheels on my Kepler disc with SKS guards and then built 650b dynamo / Novatec wheels and put 650b GB guards on. The front clearance is tight and a bit fiddly but I’ve not had any problems so far. The wheel size feels agile and doesn’t feel slower than 700 so I’m keeping it like this. If I ever take it on an off road ride I’d take the guards off and possibly swap tyres if it’s wet. Hope that helps.

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