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  1. #1
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    Bob Trailer w/170mm hub

    Want to use my Bob Trailer with the 170mm rear hub.

    BobGear has 3 different length skewers; 140, 145, 160mm, all too short.

    Anyone use the Bob with their fatty and come up with a solution?
    Cutting the rod and weld in an extension chromoly piece?


  2. #2
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    Coastkid amongst others have done this, i just googled it!

    coastrider: Fatbike Trailer...

    BOB trailer on a Fatback

  3. #3
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    Thanks Scotsman,
    I was just unusually lazy googling.

  4. #4
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    Quote Originally Posted by Flying_Scotsman View Post
    Coastkid amongst others have done this, i just googled it!

    coastrider: Fatbike Trailer...

    BOB trailer on a Fatback

    Yes, but coastkid has done it with his Pugsley which, as far as i know, has 135mm rear hub spacing.

  5. #5
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    I got my B.o.B to fit my Norco Bigfoot 6.3 (4" wide tyres with 170 mm rear hub) this way:
    1. I bought an Extrawheel bike Trailer quick release for 140 - 190 mm hubs. I removed the skewer rod and this fitted straight into a Bob skewer head. I had to saw off 20 mm off the skewer as it was too long for my 170 mm rear hub.
    2. I also got a 28 inch B.o.B fork, which was easily widened by hand, and this now fits ok although the gear cable housing rubs against the trailer fork.

    So now I can use my B.o.B on my 26" MTB as well as my Fatty with just a change of the trailer fork.

  6. #6
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    The Robert Axle Project addresses this:

    Robert Axle Project | Thru-Axles for Fat Bikes

  7. #7
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    Quote Originally Posted by Ghoulwe View Post
    The Robert Axle Project addresses this:

    Robert Axle Project | Thru-Axles for Fat Bikes
    Not exactly. Those are 12 mm thru-axles, not quick release axles.

  8. #8
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    PITA. Thi sis another reason I don't understand why there isn't a 135mm symmetrical fatbike out there. Plus all the other headaches. So many problems with 170mm spacing and so few drawbacks to 135mm, namely: 1) can't run a normal rear cassette due to chainrub. Boohoo, good riddance, I never want to use one again since derailleurs always get whacked and cause problems, 2) can't remove wheel without deflating it first, big deal, how often do you remove your wheel?, 3) may have chainrub issues on the tire, so you'll need a chainguard there, pretty easy fix IMHO, 4) MAY not be able to run full 5" tires, limited to 4", but I'm not certain about this, I'll know in a couple weeks!

    Doesn't make sense to me that no one makes one so I'm building my own in a frame building course I'm taking over the next couple weeks.

  9. #9
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    One other thing, before putting a fat tire on your Bob, test it out first with the regular one, because with my Extrawheel I found that a regular 2" tire or whatever it is worked fine on sand, and I had a lot of weight in there. No need for a fat tire. The trailer tire isn't driven and it doesn't steer so it just rides overtop of the sand just fine. Not sure if the smaller diameter Bob tire would affect this but I suspect not.

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