66cm Proteus Road Bicycle

This frame is very large. Handbuilt in the early 1980's, it was designed for 27" wheels and was built up with a pair that is for sale as a separate listing. 700s are possible if a longer-reach brake caliper is used; the installed Campagnolo Record sidepulls were about 55mm reach.

68mm Cinelli English-threaded bottom bracket

Campagnolo dropouts front and rear, tapped for adjusters in rear

26.4mm seat tube inner diameter. 

60cm Top Tube center-to-center

43-45cm Wheelbase

248mm head tube with 30.2mm inner diameter

26.4mm crown race seat

Recessed Brake Bolt Holes on Brake Bridge and Fork Crown

The rear dropouts are absolutely, perfectly aligned and the frame is straight. There is a dent in the left fork leg, as shown in the last photo.
Please contact us if you would like to have the bottom bracket chased, faced, and cleaned, the fork threads chased and cleaned, or the frame prepped in any way prior to shipment. These things can be done for an additional fee.

Returns Accepted for this item if it's within 30 Days