Old 11-20-18, 05:05 PM
  #48555  
RiddleOfSteel
Master Parts Rearranger
 
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Join Date: Mar 2015
Location: Portlandia's Kuiper Belt, OR
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Bikes: 1982 Trek 720 - 1985 Trek 620 - 1984 Trek 620 - 1980 Trek 510 - Other luminaries past and present

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Originally Posted by abshipp
RoS, did you happen to measure the angles of your 77 SLT?

I've always been curious about mine but there is frustratingly little information out there about the geometry.
I did! 74° HT and 74° ST with a 57.5cm TT (measured CTC). 25" / 63.5cm frame size. 70mm BB drop, measured. Calculated fork rake of 49mm with a calculated trail of 46mm (give or take a mm or two). Apart from the Paramount, it took Schwinn a while--into the '80s--to release really any geometry information on lesser bikes. Often, it was just a 58cm frame that they would give seat tube angle, head tube angle, and wheelbase information on. Well, that and frame size which was always a CTT measurement.
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