[python] Re: FWD tadpole for velomobile
- From: Vi Vuong <vi_vuong@xxxxxxxxx>
- To: "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx>
- Date: Thu, 25 Aug 2011 07:42:15 -0700 (PDT)
Hi Dirk,
Regarding suspension, is this what you have in mind?
http://www.youtube.com/user/scbvideoboy, great build video log...
Vi
>________________________________
>From: "dirk@xxxxxxxxxx" <dirk@xxxxxxxxxx>
>To: python@xxxxxxxxxxxxx
>Sent: Thursday, August 25, 2011 4:00 AM
>Subject: [python] Re: FWD tadpole for velomobile
>
>
> 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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