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Old 11-11-15 | 07:04 PM
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ThermionicScott
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Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)

Originally Posted by jimmuller
Just a terminology question, really. What would it mean other than merely "top tube length"?

(I'm trying to decide how comparable a particular frame is to others I have.)
It's a way to compare sloping TT bikes directly with the ones we know and love. (The actual TT length measurement is usually shorter than that.)
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