Done: MTB rapidfires on drop Bar
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  1. #1
    RoadBikeReview Member
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    Post Done: MTB rapidfires on drop Bar

    Hi Everyone,

    I thought I'd share a recent project I did on a commuter.
    I've been using downtube friction shifters on a 8 speed Freewheel but the shifting was annoying requiring constant trimming. On the lowest gear, the lever is almost parallel to the ground which snags my shorts.

    I thought about upgrading to a pair of brifters or bar ends but I don't like bar ends and STI are $$ so I came up with a cheaper alternative. I decided to mount a pair of rapidfires on my drop bars.

    People have tried unsucessfully because the clamp Dia (22.2 mm) of the shifters are too narrow to fit over drop bars (23.8 mm).

    I used Shimano STX-RCMC38 Rapidfire because it has a removable and meaty clamp to work with. A few minutes of sanding on the drum sander and Voila!

    I'm quite pleased with the results. She works perfectly on the SunRace Freewheel and it's well protected from crashes.

    Here's how it looks.









    Last edited by spartacus001; 08-03-2011 at 05:08 PM.

  2. #2
    RoadBikeReview Member
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    Good work, it looks great!
    "Those who like it, like it A LOT!"

  3. #3
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    Thumbs up

    The more, the merrier. STI are too freaking expensive! sadpanda.us/images/398106-GISLXNX .jpg

    I used 7 speed on this build, but I've done it with 8 speed before on a racing bike. It took a long time with sandpaper wrapped on a stick, but was much faster with the drill and sanding bit method. I think they look better with the indicators, but they don't really do anything on this position.

    You can put them back on flatbars later by using shims made from steel cans.
    Last edited by camping biker; 12-22-2011 at 03:53 PM.

  4. #4
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    Good job on build. Nice Miele!

    Awesome underrated bikes. Must ride smooth as butter. I just built my Miele up with 8spd gripshifts and a flat bar.

  5. #5
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    Good job. I've got a Miele like that with Biopace chainrings.

  6. #6
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    cool solution. you then did the same for the front derailleur?

  7. #7
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    I do both shifters. I have also done this to 7 speed/v-brake combos from "hybrid" bikes to put drops on them. You have no "hoods" but it works great anyway. If you use intercept levers on the tops, you don't need hoods anyway. If you grew up with 70's 10 speeds you might not even use your brake hoods.

  8. #8
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    Great idea with the beer can shims camper biker.

    Good Eye Jlandry. I didn't think anyone would recognized the Biopace rings.

    I didn't convert the front shifter as I'm on the small ring 90% of the time in the city.
    How I mounted MTB shifters on Drop Bars
    http://forums.roadbikereview.com/com...st3483521.html

    Light Review Cree XML 1800 Lumen
    http://forums.roadbikereview.com/com...mp-269236.html

  9. #9
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    That's really slick looking.

    I kind of wish that Paul would offer a 23.8-24mm version of this Thumbies so that you could do something similar with bar-end shifters.
    GRAVELBIKE.COM - ride everything

  10. #10
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    Thanks. I am using them now (with the steel shims made from food can) on the original "flat" bar the bike came with. I switched back because I implemented a dual throttle control system for a small engine. With the engine, its more comfortable to sit up and the leverage is nice for assisting the engine to speed. Motor Bicycle Friction Drive with ambidextrous throttle controls - YouTube

    All my bikes are "parts bikes", so I like to move things around and try different components till I get a bike "dialed in" for a style of riding or purpose for the bike.

    Quote Originally Posted by spartacus001 View Post
    Great idea with the beer can shims camper biker.

    Good Eye Jlandry. I didn't think anyone would recognized the Biopace rings.

    I didn't convert the front shifter as I'm on the small ring 90% of the time in the city.

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