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. daggone it! I saw these once when I was looking at a new crank system for Icon. The spindle shape was perfect and replicated beam loading from a textbook point of view. I can’t stress my brain enough to find the right cells with the answer. Beer probably washed them away, anyway. I’m thinking McMahon or something like that. When do we get the answer?

  2. Is there a chance that it could be a Mrazek …. I recall that they also made a machined SS and alu crank … but I would have to surf through my mid 90’s editions of MTB Action to be sure.

    • Answer from Jeff at First Flight Bicycles: “Dan/Ed or Dan-Ed Crank, first names of the guys who owned the company.” Also, see his link (jeff’s comment above) for the belt-drive version.

What do you think?