(...) Thank you for this illustration. I see your point. These parts should have been originally modeled rotated 90 degrees around Z so that the liftarm "thickness" would have been the same a brick "width". I think I can safely say that I have (...) (21 years ago, 1-Jan-04, to lugnet.cad.dat.parts, FTX)
(...) Indeed but... too late now :-( (...) ...but using plates on side of liftarms can be very helpful to stiffen chassis built with them. Philo (21 years ago, 2-Jan-04, to lugnet.cad.dat.parts, FTX)