bikerumor monday mystery pic

Photo from the collection of Jeff Archer of First Flight Bicycles. If you think you know what this 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. Well, it must be a part of a DeLorean (I’m guessing maybe a Flux Capacitor shunt resistor?), since today is Sunday, but in the website it’s already Monday…

  2. I remember these brakes. the macmahon scissor links were so powerfull!! the precursor to the bat wing which in my opinion were the best pre v braks brake.

  3. Yeah, McMahon Scissors Brake. Hope it’s made of better material than my MRC Decelerator cantilever, which was made of pot metal that deformed, bulged, and cracked on me.

  4. This is a McMahon Racing Components Power brake “scissor type” – with Link U-Brake Flex Plate.
    It’s from about 1991-1996.

    To Spencer: I think this is not the “batwing”. That was a “simple” V brake.

What do you think?