Joined: Aug 2003
Posts: 3,520
Likes: 12
From: Colorado Springs, CO
Bikes: 1959 Bottecchia Milano-Sanremo (frame), 1966 Bottecchia Professional (frame), 1971 Bottecchia Professional (frame), 1973 Bottecchia Gran Turismo, 1974 Bottecchia Special, 1977 Bottecchia Special (frame), 1974 Peugeot UO-8
Ok, I made some measurements. The narrow end of the square taper is 12.41mm. The tapered portion is 16.0mm long. And the wide end of the tapered portion is 13.53mm. Based on the graphic shown below:
A) 28mm (non-drive side)
B) 57mm
C) 32mm (drive side)
D) 117mm
The only markings are the line marking the drive side and the word "Ofmega" in the middle of the spindle.
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1959 Bottecchia Milano-Sanremo(frame), 1966 Bottecchia Professional (frame), 1971 Bottecchia Professional (frame),
1973 Bottecchia Gran Turismo, 1974 Bottecchia Special, 1977 Bottecchia Special (frame),
1974 Peugeot UO-8, 1988 Panasonic PT-3500, 2002 Bianchi Veloce, 2004 Bianchi Pista
Last edited by Kommisar89; 10-01-18 at 06:53 PM.