Bottom Bracket


<Gran Sport Cotterd> 1st generation mid 1950s ??
No engraved letters on the barrel.

Shape of Right cup is unusual.
O-rings had built-in inside both cups  

The finish of cups are great and perfect.

engraved "PATENT CAMPAGNOLO"





<Record> for 1st generation crank set 1958
BSC (Strada)

68 - S - 120
Italian (Strada)

70 - S - 120



<Record> Con Sfere circa 1960.
Italian (Strada)

70 - SS - 120
BSC (Strada)

68 - SS - 120
small bearing.
Look likes Super Record



<Bearing>
Fit Con Sfere BB

Small bearing
Normal bearing



<Crank Fixing Bolt>
1st (1958)

for 1st generation.
2nd (1960)

for Con Sfere
Alloy (1970s)  

never seen others (mine only)

(The explanation about Fixing Bolt)

Left
Center
Right
group 1st Record 1958 Con Sfere BB Special order
Year 1958 1960 1970s
colour steel black
material steel
chrome
steel alloy
weight (piece/g) 27.5 9.5
size of letters small normal
PATENTと
CAMPAGNOLO
の刻印の配列
PATENTと
CAMPAGNOLOの配
列(向き)が反転
中心から外に向かって
いる。PATENTと
CAMPAGNOLOの配
列(向き)は同じ。







<Special Size>
1950s. (Strada)

74 - S- 120

1950s is "S". Past 1960s is "SS"

often use Italian brand
1960s (Pista)

65 - P - 110





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