[mowbot] Re: 3 or 4 wheels?
Paul Jurczak (pauljurczak nospam at yahoo.com)
Tue, 25 May 1999 11:22:18 -0700 (PDT)
--- adamdb nospam at juno.com wrote:
> I like it! Add spikes, then you not only do you get non-slip tires,
> you
> get the added benefit of aeration. Of course you still need to worry
> about it running over and aerating something it shouldn't, but that's
> a
> problem for the proximity/bump detectors to solve.
>
> On Tue, 25 May 1999 10:29:56 -0400 "Michael Davenport"
> <michael.davenport nospam at wheatstoneenergy.com> writes:
> > A four-wheeled platform would be more stable. If you go with (4),
> > could you
> > make them all drive wheels? Same goes for three - that way as long
>
> > as one
> > wheel / tire is in contact with the terrain, it will move. (As
> long
> > as that
> > drive wheel / tire does not slip.)
> >
> > That brings me to another comment. If you have only two rear drive
>
> > wheels /
> > tires, and you are having traction problems, what about doing
> > something to
> > increase the coefficient of friction between the terrain (grass)
> and
> > the
> > tire, such as adding spikes or knobbies....you could remove the
> > rubber tire
> > and drive nails or screws from the inside pointing out (assuming
> > it's not an
> > inflatable tire).
> >
> > Michael Davenport
> >
>
> Adam Bryant (age 0x23)
> abryant nospam at peaktech.com (work)
> adamdb nospam at juno.com (home)
> Parker, CO, USA
> Robotics, RC Airplanes, anything using a PIC
I converted my mowbot to tricycle, which improved traction due to
continuous contact of driving wheels with the ground. In retrospect I
found that wheel slipping was mainly due to temporary setup of my
motion control - stop or maximum speed only with quick acceleration.
Lowering acceleration, would probably make 4 wheel platform quite
managable.
I like the idea of aerating spiked wheels!
Another question - can I post picture of my mowbot in progress on
official mowbot site? What should I do?
===
Paul Jurczak
<pauljurczak nospam at yahoo.com>
_________________________________________________________
Do You Yahoo!?
Get your free nospam at yahoo.com address at http://mail.yahoo.com