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I am trying to compare frame geometry of a couple of frames using CAD
however when I try to input the geometry of a Spesh Epic 29er Medium I am getting some odd shapes
here is the manual pic
[img] 
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here is the manual geometry
[img] 
[/img]
but when I enter all this I am getting the BB (datum point) above the wheel axles (wheels are to scale):
[img] 
[/img]
Posted : 09/12/2012 10:39 pm
331 is from where the wheels touch the ground, not a random hovering point?
Posted : 09/12/2012 10:49 pm
Topic starter
331 is from where the wheels touch the ground, not a random hovering point?
yep thanks, however the drawing is fully constrained as it is,
Spesh diagram implies the fork is dead straight with no rake, i have removed this and put the wheel forward based on the wheelbase geom, seems okay now
Posted : 09/12/2012 11:23 pm