[python] Re: FWD tadpole for velomobile
- From: "dirk@xxxxxxxxxx" <dirk@xxxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Thu, 25 Aug 2011 13:00:57 +0200 (CEST)
Hi all,
if the cross beam with the two wheels is suspended and allows for some lean
steering, this could work. You could attach some handle bars to it to control
the leaning.
- DirkS
Gerald <bepb@xxxxxx> hat am 24. August 2011 um 21:16 geschrieben:
> Hi Vi,
> Very unusual, the for a four wheel configuration. But I think if the
> tadpod would stand on an uneven surface, you might face hanging in the
> air with the driven wheel.
>
> For the three wheel configuration, I think, the issue is a suitable
> drivetrain. Thats why I dug out the Russian trike. If nothing else, the
> hubs of the frontwheels are about what you need.
>
> But maybe a trike configuration python with a two part shell fairing
> would also be an option.
> Two part in a way that allows the fairing to bend with the trike.
>
> Gerald
>
>
>
>
>
>
>
> On 24.8.11 16:33 , Vi Vuong wrote:
> > 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
> >
>
http://dirk.steuwer.de
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