Subject:
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Re: 3 segments hexapod
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 10 Jan 2006 22:21:39 GMT
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Viewed:
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5245 times
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Hi Mark,
In lugnet.technic, Mark Bellis wrote:
> In lugnet.technic, Sigurd van Strakenburg wrote:
> (SNIP)
> > steering whit a midstop
> > don't work so i did not bother hooking it up.
> >
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?f=157060
> >
> > please let my no what you think of it :)
> >
> > sigurd
>
> Hi Sigurd,
>
> Would it help your mid-stop steering if you spaced the axle joints of the outer
> mid-stop valve switch levers further apart (reducing their angles relative to
> the centre switch)?
the problem is not the mid-stop system, but the hexapod dont turn as i expected
(it don't turn at all) when it's body is curved.
>
> With the same spacing of the valves along the beam, I have the levers spaced
> apart with a 1x4 brick with holes:
> http://www.brickshelf.com/gallery/mbellis/Technic/Pneumatics/Trinary-Logic-System/cascaded_trinary_logic_evo1_zoom.jpg
>
> See the right of the picture, behind the axle joints, that the distance between
> the black 3L pins in the outer two valve switch axle joints is 4L, with the pins
> having the slightly narrower end touching the brick. The slightly wider end is
> above the axle joint. The difference in these two distances can be critical in
> order for mid-stop steering to work.
>
> I used 2L liftarms and cams to make the 1x4 brick with holes move in a
> parallelogram along the beam, moving with the centre valve switch, rather than
> the brick rotating around the pivot of that switch as your 24mm pulley does.
> Sorry it's a bit difficult to see!
thanks anyway, your midstop system looks impresive!!!
>
> Nice robot! • thanks :)
>
> Mark
Sigurd
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Message is in Reply To:
 | | Re: 3 segments hexapod
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| In lugnet.technic, Sigurd van Strakenburg wrote: (SNIP) (...) Hi Sigurd, Would it help your mid-stop steering if you spaced the axle joints of the outer mid-stop valve switch levers further apart (reducing their angles relative to the centre (...) (19 years ago, 24-Dec-05, to lugnet.technic)
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