Hi Dirk & Gerald Here is a blend of several ideas from suggestions. It's a cross between a quad / outrigger / shopping cart / solar panel, and a pivot overload... http://www.youtube.com/watch?v=IK9ynAhUFUc Vi > >Hi Vi, > >a simple solution would probably be a non tilting, rigid front part with a >central drive unit powering an axle that is connected to the drive wheels on >either side. Since you cannot fall over that easily, you could probably lower >the pivot angle to get more lean-steer effect (and seat rise for that matter) >only on the back part on which you are seated. So the majority of the total >mass would shift during a turn. > >Another idea i had some time ago was to have a similar setup, but not with a >stiff axle through the center of the front wheel, but a stiff axle in front of >those driven wheels. This axle would also act as a rotation center for a >suspended front wheel on either side (putting a normal bikes rear wheel drive >chain to that axle on either side). A "steeringhandle" would then be used to >solely adjust the lean factor, but not the steering which is still controlled >by your feet. >I planned to have similar sprokets on the wheelaxle and the driving axle in >front, to create not lag during suspension. >Also, i wanted to use stiff ropes from paragliders connected to both front >wheel centers and "hang" the frame onto them while connecting them with the >lean-steer-handles. Leansteering would then pull the frame up on one side of >the frame, while lowering it on the other... > >greetings, >DirkS > >>________________________________ >From: Gerald <bepb@xxxxxx> >To: python@xxxxxxxxxxxxx >Sent: Sunday, August 21, 2011 8:55 PM >Subject: [python] AW: FWD tadpole for velomobile > > >Hi >I think there is or maybe was a front wheel driven tadpod from Russia, the >S-327. On the page http://www.trike.ru/en/photos.php are some pictures off an >three wheel drive tadpod trike, S-3 3x3 which could be an evolvement. >But both are steered by handelbars. > >Gerald