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Bikerumor Monday Mystery Pic

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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.

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Sean
Sean
10 years ago

Old Rotor cranks that did funny things with timing?
http://www.rotorbikeusa.com/products/RS4x_cranks.html

Doubt it, after looking further at it.

Kris Hicks-Green
Kris Hicks-Green
10 years ago

MMC (Magic Motorcycle Components) crank?

Ripnshread
Ripnshread
10 years ago

Bullseye cranks?

Kris Hicks-Green
Kris Hicks-Green
10 years ago

Not MMC. Cyclone? Arm shape is about right, but the spider is a little different than the version I’ve seen.

jud
jud
10 years ago

white industry crank and b.b. .

Iowa Cyclist
Iowa Cyclist
10 years ago

Ahh, the Campy Frame Extender, circa 1982. Am I right?!?

Gordon
Gordon
10 years ago

That is a good mystery pic. I was thinking Prototype Action-Tec crankset and BB? Or a Gonzo Ti Bb and crank?

Luke
Luke
10 years ago

Look like Bullseye cranks to me.

Your Face
Your Face
10 years ago

Campy Seatpost.

O'school
O'school
10 years ago

Dan/Ed cranks. Ahead of their time. I think they even had a belt drive too

kurti_sc
kurti_sc
10 years ago

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?

Nick C
Nick C
10 years ago

fo sho DanEd with a big ol’ U.S.A. machined on the outside. and a nice bb conversion and hexagonal spindle to arm interface.

Ripnshread
Ripnshread
10 years ago

What is with the bb? How does it attach to a frame? 2

ant1
ant1
10 years ago

1950s campy track seatpost, to be exacter.

Jeff
Jeff
10 years ago
Chris S.
Chris S.
10 years ago

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.

E. N. Gineer
E. N. Gineer
10 years ago

@kurti_sc: And the pockets in the crank arms precisely coincide with the highest stressed area XD

Gillis
Gillis
10 years ago

prototype raceface crankset

Jed
Jed
10 years ago

It’s a potatooooo!

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