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Subject: 
Re: SSClagorpion
Newsgroups: 
lugnet.technic
Date: 
Thu, 15 Apr 2004 16:09:47 GMT
Viewed: 
8013 times
  
In lugnet.technic, Steve Hassenplug wrote:

looks good.  But slow.

Thinking about this more.......

One of the reasons that makes this slow is the inherent piston friction which
combined with pressure defines the rate of expansion and contraction.  So the
rate is not very negotiable.

But using

rate * time = distance

and turning it around for time we get

time = distance/rate

Since we cannot really control rate well, we must reduce distance to decrease
time.

In the past, to avoid stresses to structure, I've always made the piston/switch
linkage work so that the piston never pushes or pulls the switch to its limits.
i.e. The throw due to piston expansion contraction never exceeds the max throw
of the switch handle.

But...... if I use as little piston expansion/contract as I can to flip the
switch, I end up with the shortest time for piston expansion/contraction.  Cut
the piston throw in half, and double your walk rate.

I'll start on new designs using this concept.  Because I'm building something
that wants to tear itself apart, I'm going to use studded beams for extra
strength.


Steve

Kevin



Message has 1 Reply:
  Re: SSClagorpion
 
In lugnet.technic, Kevin L. Clague wrote: <snip> (...) So using #1 axle connectors as the linkage, we get a reduced piston expansion, down to 86% of maximum. Using technic axle joiner perpendicular, we can reduce the range to 70% of maximum. I can't (...) (20 years ago, 15-Apr-04, to lugnet.technic)

Message is in Reply To:
  Re: SSClagorpion
 
(...) That was my second choice. Ok, three motors. If it can be worked out, we COULD combine #1 and #3, right? Leaving: 1) Function (walk/turn) 2) Direction (forward/backward/stop) I assume both of these groups are controlled only by motors, and at (...) (20 years ago, 14-Apr-04, to lugnet.technic)

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