bikerumor monday mystery pic from first flight bicycles statesville nc

Photo from the folks at First Flight Bicycles. If you think you know what this part is, post your answer in the ‘comments’ section– the correct answer will be posted there on Tuesday!

To send in your own Mystery Pic to be considered for the Monday feature, click here and attach your photo with all pertinent information.


  1. A Pinion P1.18-gearbox frame without its own casing?
    And is that a lefty? Reminds me of Rob English’ lefty racing bike.
    Maybe it the monster of Loch Ness…

  2. Front half of a collapsible tandem? There looks to be room for a fork and wheel up front but not at the back.
    Or a trick bike for doing front wheelies?

  3. Looks like some sort of Titan Flex frame. Not sure what’s going on with the BB though but the beam seat post part looks like other Titan Flex frames.

  4. Looks like some kind of gauge.. only for what? Does not seem to me like a actual frame to be ridden. Testing different bottom brackets, chain lines???

  5. ^^ Phil must be the closest. Some of kind of fitting bike with a gearbox. No way to ride it with that rear monostay unless it uses some sort of non-traditional hub/wheel. Although it does seem to angle to the right side so maybe room for a wheel…

  6. I seem to recall this as a chain drive internal gearbox racing frame (using a lefty hub with a cog bolted on the disc mount I think). I think the gearbox was just a short cage mech and (8speed?) cassette.

  7. doubt it’s for a gearbox… none of them are shaped that way – pinion, rohloff, etc, and they don’t mount in the frame that way.

    another thought I had is that it is an alignment gauge for a frame welding jig, but if that were the case, there’d be more mounting positions, and the chain “stay” is entirely too long.

    my best guess is that its the front end of some kind of work bike, either a trailer or maybe from a pedicab. possibly with some kind of moped integration.

What do you think?