1983 Bianchi Osprey "Purple" Bottom Bracket.
03-07-21, 03:28 PM
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1983 Bianchi Osprey "Purple" Bottom Bracket.
Hi folks. I have a Bianchi Osprey MTB 1983 Metallic Violet is colour I believe. SN #H2C26953. I was wondering if anyone can assist in pointing me to the correct bottom bracket and Axle (5R) replacement parts. The following are the measurements. Any help will be appreciated. TIA.
Length=68mm, O.D.=40mm, appears to be 10-11 Threads/cm.
Axle Part# is "5R, Boron, L-3". No other Part #s. Cups have rubber seals.
Overall Axle length=145mm, Crank Arm Threads=10mm,
bearing seat area is 5mm longer on Drive side.
Crank arm nut threads=10mm, Crank arm square taper area=20mm.
Center of axle between bearing seats is 50mm.
Drive side threads are left handed.
Length=68mm, O.D.=40mm, appears to be 10-11 Threads/cm.
Axle Part# is "5R, Boron, L-3". No other Part #s. Cups have rubber seals.
Overall Axle length=145mm, Crank Arm Threads=10mm,
bearing seat area is 5mm longer on Drive side.
Crank arm nut threads=10mm, Crank arm square taper area=20mm.
Center of axle between bearing seats is 50mm.
Drive side threads are left handed.
Last edited by JohnBlauw; 03-07-21 at 03:32 PM. Reason: Additional info.
