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Old 07-17-16, 05:21 AM
  #18  
Prowler 
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Join Date: Nov 2013
Location: Near Pottstown, PA: 30 NW of Philadelphia
Posts: 1,286

Bikes: 2 Trek Mtn, Cannondale R600 road, 6 vintage road bikes

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The key measurement for me is from the top of the pedal spindle to the sit bone location. I don't actually know what that is but I made a 'gauge' that has that and I use it on all my bikes so it's set the same. ST and crank arm lengths vary, even saddle heights vary (though most of them are Vetta TriShock) so this gauge (story stick) gives me a quick check. My best fits are 57/58cm but I ride a 61, a well slammed 62cm Moto and the well stretched Trek Mtn bikes.

My story stick also has a mark for sit bone to back-of-the-brake-hoods which helps determine needed stem length and seat set-back. Between these two measurements my basic triangle of contact points is about the same on all 8 bikes. Works for me.

Last edited by Prowler; 07-17-16 at 05:24 AM.
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