[python] p4.gif measurements
- From: Michael Rienstra <ageless@xxxxxxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Wed, 22 Sep 2004 14:25:11 -0700
Jürgen,
Are these accurate to the best of your knowledge?
scale of p4.gif 798 px = 1160 mm
scale: 0.68793 px/mm
scale: 1.4536 mm/px
p4 wheelbase: 1160 mm (known, not measured from photo)
p4 seat height: 234 mm
p4 wheel OD: 641 mm
p4 front frame angle: 25 deg
p4 pivot angle: 65 deg
p4 steering axis to FWaP: 381 mm
p4 bottom of front frame tube to FWa: 19 mm
p4 FWaP to BB: 407 mm
p4 BB height: 528 mm
p4 height difference between seat and BB: 294 mm
p4 rear frame angle: 12 deg
p4 ground clearance: 139.5 mm
p4 seat base angle: 14 deg
p4 seat rear support angle: 56 deg
p4 seat rear support length: 368.5 mm
p4 rear frame length: 747 mm
p4 rear frame bend to seat rear support: 256 mm
And p4.gif is based on your size, correct? 860 mm inseam, 1790 mm
height?
Michael
PS: Whoops, the tubing weight I gave before was for the 1" x 0.5". The
weight for the tubing I'm using is 0.8265 lbs/ft (1.230 kg/m). So 2900
mm will weigh about 3.6 kg (8 lbs). That doesn't include a lot of other
little stuff like the linkages and the pivots, seat support stuff, etc.
I wonder if I could get away with 1" x 0.5" (25.4 mm x 12.7 mm)?
Probably not, that would be a lot weaker than 40 mm x 10 mm, even if
the walls are 10% thicker.
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