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Thread: Spoked Rear Wheel, Disc Brake

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  1. #1
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    Spoked Rear Wheel, Disc Brake

    I want to convert my 78 R100S from rear drum to a disc brake. I have all the parts I need, but I can not find a spoke wheel with a disc brake hub???? All there is are snowflakes. Are they THAT rare?

  2. #2
    Administrator 20774's Avatar
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    Didn't the early R100RS come with spokes? Assuming it had a rear disk, then they might be pretty rare.
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    Sir Darby Darryl Cainey's Avatar
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    Quote Originally Posted by 20774 View Post
    Didn't the early R100RS come with spokes? Assuming it had a rear disk, then they might be pretty rare.
    No, all the R100RSs with spokes had drum brakes, only the ones with snowflakes had the option of drum or disc
    brakes.
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    How about the S? I know there was a 1978 R100S with a rear disc. What wheel did that have?

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    Sir Darby Darryl Cainey's Avatar
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    Quote Originally Posted by EMSimon View Post
    How about the S? I know there was a 1978 R100S with a rear disc. What wheel did that have?
    The same, the only difference is the handelbars & faring.
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    Does that mean, I cannot get a spoke rear wheel with a disk brake? I have to get one made?

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    Quote Originally Posted by EMSimon View Post
    How about the S? I know there was a 1978 R100S with a rear disc. What wheel did that have?
    Disc on snowflakes only, or aftermarkets (Lesters, etc.)

    Why do you want the disc rather than a drum? If you're looking for the spokes to give that "period authenticity/appearance", i would think that a drum set-up would enhance that look, not detract from it. No?
    Ride Safe, Ride Lots

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    You may need to have a hub custom built

    I don't think your going to find a OEM BMW spoked rear wheel or hub to fit your bike that mounts a disc brake, I don't think they made them OEM. I'm almost certain that if there's a Lester rear wheel disc brake it will not be for sale. I know that Morris mags are out there (I have a set for a pending project) and they do make a rear disc wheel for Air heads but you will need to fabricate a caliper mount. Morris mags look almost like Lesters but just a little lighter in weight and a little better looking in my opinion.

    Woodys Wheel Works is an excellent resource and vendor for custom stuff and the staff has a wealth of knowledge regarding what works and what might be a very expensive and unproductive experiment.

    I had given thought to having a disc mounting adapter made for a spoked wheel hub until I compared the stopping power of the rear disc on my R 100S and the drum brake on my R 90/6 and found that there is not much of a difference between them.

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