Viewing 17 posts - 1 through 17 (of 17 total)
  • Does anyone apart from Cotic . . .
  • Nicknoxx
    Free Member

    make a rigid fork with a disc brake mount on the front of the right hand leg?
    I'm looking for a slightly longer one and with the disc in the usual position it's not so easy to fit mudguards

    druidh
    Free Member

    A solution looking for a problem. There are lots of forks which will take a disk and mudguards.

    cp
    Full Member

    the other advantage is that under braking the effective pivot point of the wheel is in front of the dropout, so the resultant force acts to push the wheel into the dropout rather than out of the dropout.

    sorry, don't know any others. although it's practical, it's not exactly aesthetically pleasing eh?!

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    druidh
    Free Member

    cp – Member
    the other advantage is that under braking the effective pivot point of the wheel is in front of the dropout, so the resultant force acts to push the wheel into the dropout rather than out of the dropout.

    So – every other fork manufacturer has it completely wrong…….

    poppa
    Free Member

    More or less, onion.

    poppa
    Free Member

    More or less, onion.

    zokes
    Free Member

    So – every other fork manufacturer has it completely wrong…….

    Well, all except Pace did with canti mounts…

    poppa
    Free Member

    more or less, onion

    tails
    Free Member

    more or less, onion

    SidewaysTim
    Full Member

    Less please, unless they're pickled.

    cp
    Full Member

    from a purely mechanical point of view, yeah, they are all designed less than optimally.

    In the real world though, very few people have problems with the way the vast majority are, and it does look a hell of a lot better!

    geoffj
    Full Member

    it's not exactly aesthetically pleasing eh?!

    tis mudguards we are talking about no? 🙄

    <trying to be useful>

    What's wrong with bending the stays around the caliper?

    </trying to be useful>

    Northwind
    Full Member

    Onion- "So – every other fork manufacturer has it completely wrong…"

    They were put that way in the first place because motorbikes are like that, I reckon, not because it was the best place. Engineering wise it's undeniably not the best option. TBH front mount looks stupid and that alone is enough of a reason to go with a sub-par engineering solution in my book 😉

    druidh
    Free Member

    Northwind – Member
    > Onion- "So – every other fork manufacturer has it completely wrong…"

    They were put that way in the first place because motorbikes are like that,

    Like this one?

    All early motorbike disk brakes were fitted to the leading edge of the forks. Then they changed……

    Nicknoxx
    Free Member

    Still not as fugly as Thorn's fork with Vee brake calipers on the wrong side of the fork.

    Northwind
    Full Member

    No Onion, not like that one obviously- you've had to go back a way to find a motorbike with a front-mount caliper, that CB's got to be at least 30 years old. I said, pushbikes got trailing calipers because that's what motorbikes have, not had back in the dawn of time.

    Daffy
    Full Member

    The Cotic design does force the wheel into the dropout under braking, but it makes far less sense in a modern post mount config.

    The force generated on the calliper bolts by the calliper attempting to stop the wheel via the disc rotor is effectively forcing the calliper away from the fork mounts. On a conventional design (especially with smaller rotors) the force is pressing the calliper into the fork leg. Much less strain on the mounting bolts.

    + with angled dropouts the dropout alignment is almost parallel to a radius path to the calliper effective pivot point, meaning that the wheel would somehow have to have a force generated from above to force it from the dropout.

    Conventional is better.

    To answer the OPs question…sorry dunno.

Viewing 17 posts - 1 through 17 (of 17 total)

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