Subject:
|
Re: SSClagorpion - Status Report
|
Newsgroups:
|
lugnet.technic
|
Date:
|
Mon, 20 Dec 2004 16:40:35 GMT
|
Viewed:
|
26924 times
|
| |
|
|
In lugnet.technic, Kevin L. Clague wrote:
> In lugnet.technic, Joseph Greene wrote:
> > Well I have a leg design at current using 2 large cylinders that gets ~21
> > cycles/minute with 1 leg and a 6 way radial pump (I don't have enough pumps to
> > fill out the full 12 way...) but it's sturdy and strong and fully self
> > cycling...the problem is working a circuit to have 4 legs moving in tandem at a
> > time.. so I'm looking into a linkage design to handle the forward-backward
> > motion and a wired linkage design for the up-down motion..., how are you
> > planning your legs? individual motion with cylinders on all? how many
> > cylinders/leg?
>
> 21 cyles per second is good. It will go much slower with 7 more legs.
Yeah, I'm estimating 1~2 cycles per minute with all 8.
>
> Do you plan on having all the legs be self cycling? How will the legs stay
> coordinated?
The very reason I'm looking at a linkage solution....
>
> I plan on one pison for vertical, and one (maybe two) for horizontal. Do you
> know the lock mechanism used on folding chairs and folding tables? I plan on
> using that mechanism to lock legs into vertical down position.
>
> I'm interested in hearing about your wired leg design. Using all LEGO parts? I
> tend to stay away from modified or non-LEGO parts.
All lego accept possibly for the string/wire with crimped loops to loop over
pins.
MODIFIED LEGO! Never.. Back back.. foul fiends! The Lego is sacred.. ok.. just
kidding, I'm not that crazy, but close.. the only deliberately modified Lego
piece I own is and axle joiner which wa sheated on one end to form it so I could
attach a 12 turn RC motor to my Lego.. it's disastrous results cured me forever
of the modding urge.
> > The travel on a large cylinder seems to be ~5 studs, while the switch throw is
> > 3 end to end.. is that about right?
>
> Yes, so I'll need to only move 3/5 the volume of air needed in full throw
> designs. • Hmm.. I'll think on that a bit...
>
> > I've found I can avoid the leakage if I'm using the cylinders in oblique angles,
> > thus minimizing the leteral torque, but I coud be wrong...
>
> In PhD hexapod walker, I had reliability problems because of the sheer number
> parts involved: 12 large pistons, 4 small pistons, 26 switches for leg piston
> instrumentation, and 48 switches for behavior modification.
>
> > Mine is mostly Black and yellow as that is what I have the most of.. alas some
> > white has intruded as well...
>
> In general try to stay away from black, because it is hard to take pictures of,
> and see the internal design.
I LDraw a lot of it anyway...
> > Given my current design, it's going to be huge.. on the order of 2'x3'... does
> > that sound similar?
>
> Yes, huge it is. The radial compressors, plus two RCX's, and the 8 legs make
> for a large design.
>
> I tried to make an inchworm out of small pneumatics (to make things faster), but
> it had so much reliablity problems, I could never get it to work.
>
> Kevin
Hmm..
inchworm... hmm...
|
|
Message has 1 Reply:
Message is in Reply To:
 | | Re: SSClagorpion - Status Report
|
| (...) 21 cyles per second is good. It will go much slower with 7 more legs. Do you plan on having all the legs be self cycling? How will the legs stay coordinated? I plan on one pison for vertical, and one (maybe two) for horizontal. Do you know the (...) (20 years ago, 19-Dec-04, to lugnet.technic)
|
300 Messages in This Thread:
(Inline display suppressed due to large size. Click Dots below to view.)
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
