george1100
New Member
The serial number on my 1990 (i think), black lightning is 66008890012, the decoding of this number does not make sense. need help
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I'll bet you are right. I forgot about the alternate sequence with the dropout spacing code. The first 6 = 126 spacing. As an aside, 66 was offered stock but only as a frameset.it could also be a 60cm,
6-60-8-08-90012
or a 66cm. Cannondale made special requests. 66 would be insane though.
might be better to see the SN, and measure the frame.![]()