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Bikerumor Monday Mystery Pic

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bikerumor monday mystery pic first flight bicycles mombat

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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23 Comments
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Reformed Roadie
Reformed Roadie
9 years ago

Mavic Bottom Bracket…no threads required…perfect for frames with cross-threaded BB.

Kelly Smith
9 years ago

Yes I agree, Mavic Bottom Bracket for shells with stripped or damaged threads.could also adjust chain line.Great Mavic Quality.

Parkcyc
Parkcyc
9 years ago

Mavic 610 bottom bracket. Needed a specific chamfering tool so it could be used and installed properly. I still have one and the tools. Worked beautifully but weighed a freaking ton!

huelse
huelse
9 years ago

Mavic 616 R.D. bottom bracket

Wingnut
Wingnut
9 years ago

Mavic…but the cups are on backwards….

Your Face
Your Face
9 years ago

I swear we have already have had this.

Your Face
Your Face
9 years ago

Yup, right here; https://bikerumor.com/2012/12/17/bikerumor-monday-mystery-pic-64/#comments. I am sure it is a slightly different model, but same company and era.

joby
joby
9 years ago

Mavic BB; needs special chamfering tool to cut the shell in order to seat the black bushings on the ‘cups’.

NASH
NASH
9 years ago

Not a mystery pic as it was posted already.

Fatboy
Fatboy
9 years ago

hydraulic dropper for Campy seatpost

jud
jud
9 years ago

mavis early version of press in, almost. Usually used back in the day when a mechanic strips your threads in the b.b. .

spokejunky
spokejunky
9 years ago
Cykelposten
9 years ago

Only available in ISO taper so not a good repair solution unless you ran Campag….. Am running 3 of these – all on Mavic cranks though…. .

Cykelposten
9 years ago

Wingnut – cups aren’t on backwards – it’s the MTB version which was wider so would fit 73mm shells.

Cykelposten
9 years ago

Actually from photo looks like it has 1 MTB lockring and one road lockring. What’s the story there?

Laurens
9 years ago

Yeah, Mavic’s old BBs – I still have one mounted in an old Trek 8700 frame, alloy/carbon from 1991.
Damaged the BSA thread on that frame, so the Mavic was the only solution after that.
Wish they’d still make those rather than helmets and stuff.

Matt
Matt
9 years ago

On a similar vein, is there currently any way to run a square-taper crankset in a pressfit frame?

royalewithcheese
royalewithcheese
9 years ago

@Matt, there are aluminum sleeves with BSA threads that you can press into a BB30 frame with a headset press, they aren’t easy to get out if you ever decide to run a BB30 crank though.

Rick Jacobson
Rick Jacobson
9 years ago

Yup, it’s a Mavic BB. I have one on my 1983 KHS Professional. Swapped the original Superbe Pro Crank for the lighter, stiffer, and oh-so beautiful Mavic Crankset. The bike currently runs on the original derailleurs and brakes, Shimano 7sp shifters and freewheel, Campy Record hubs and seatpost, and Modolo brake levers. And yes, the all play well together!

Your Face
Your Face
9 years ago

So Rick, you’re running a campy seatpost. Nice.

MAvic
MAvic
9 years ago

Mavic’s worst invention ever. An anuglar pressure fit bb that required you to mill your frame to accept it. I had to use green loctite all the time on mine to keep it from moving under extreme loads. The only good thing about that BB was the ability to dial in the chainline.

greg padley
greg padley
9 years ago

Great BB! Now who has the shop tool kit from Mavic for chamfering the bottom bracket shell, adjusting the hubs, removing and installing the sealer cartridge bearings from these wonderful parts? Yea, that would be me!

Matt
Matt
9 years ago

@royalwithcheese
Lesson I learned the hard way. If your PF shell isn’t perfectly round, then there’s no way for the aluminum shell to fit into it.

…but not being perfectly round it kind of the whole point of pressfit. You can be slightly off and PF still works find. Would love to find a non-permanent solution for a pressfit squaretaper.

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