Why not make the cross bar between the forks a torsion suspension? It could be either independent or on a center pivot to move both rear wheels in a self leveling mode. Even simpler would be a small leaf spring with a fork on each end. As shown suspension forks would not function well. From: "dirk@xxxxxxxxxx" <dirk@xxxxxxxxxx> To: python@xxxxxxxxxxxxx Sent: Wednesday, August 10, 2011 6:00 AM Subject: [python] Re: python Digest V9 #118 Hi Marek, i think with two forks, strain should notbe a problem. However, the inclination of 45° to the wrong side could prove to be bad fpr damping perfomance. Imagine you hit a small curbside: the suspension should act along the line "contact point tire/curbside" - "center of wheel" So a damped seat could perform better with good positioning, than this design. Ideally, damping the wheel is best, since you have less "umdamped weight" (ungefederte Masse) greetings, Dirk "bnmm@xxxxxxx" <bnmm@xxxxxxx> hat am 5. August 2011 um 00:56 geschrieben: > Listees, > > > would it be possible to use suspension forks with a design like this? > (using python steering) > www.openbike.org/wiki/File:Evij-trike.jpg > > It seems that the forks are inclined ca 45°, would there be too much > shearing strain? Else, if it works ok, is it a good idea in the first > place or would it be better to suspend back rest or seat instead? > > > Cheers, > Marek > > > -- > Marek Möhling > Naunynstr. 82 > 10997 Berlin > Germany > Tel: +49 30 347 676 95 > Fax: +49 30 484 988 218 > ============================================================ > > This is the Python Mailinglist > > //www.freelists.org/list/python > > Listmaster: Jürgen Mages jmages@xxxxxx > > To unsubscribe send an empty mail to > python-request@xxxxxxxxxxxxx > with 'unsubscribe' in the subject field. > > ============================================================ > http://dirk.steuwer.de