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Subject: 
Re: My First Stacking Attempt
Newsgroups: 
lugnet.org.ca.rtltoronto
Date: 
Wed, 7 Feb 2001 05:08:07 GMT
Viewed: 
1356 times
  
In lugnet.org.ca.rtltoronto, Rob Stehlik writes:
> I just had some more thoughts on your mechanism... Using curved guides up front
> should elimenate most of your block alignment problems. Use a couple of those
> big sloped znap pieces like Chris did. This way, you would only have to drive

That was the plan, but it's a little more insidious than that. :(  It's not
just the floor plane, it's the alignment in the other plane-ie, it's if a
block hops into the wheels (ie, being bumped by another block behind it, or
being bumped by an imperfection in the floor) at a weird angle in relation
to the floor.

However, the guides you suggest I think will help a lot.

> the grabber wheels when a block is on the way in. Then you could rig up a
> direction splitter and use one direction of the motor to drive the wheels, and
> the other direction to split open the mechanism. The flex axles should allow a

Actually, I was planning (but let me know if you think this is silly) to
leave them on all the time.  Continously, driven off a secondary battery box.

> lot of flexibility (imagine that!) in the drive system. So putting all of this
> together shouldn't be too hard. As far as the split goes, you are on the right
> track with the slanted pieces. I did something similar on my robot. I can send
> you a quick Ldraw file if you like...

Could you?  I now have a frame that splits nicely with a little bit of
elasticity, and is reasonably strong with hardpoints that could be connected
to a chassis. If you spread the sides, then let go, the frame returns back
to normal due to a rubber band.

I'm going to try and power said plunger/slants with a wormdriven linear
translation (ie, Leo Dorst mechanism) and a micromotor...and I have an idea
(I'm thinking of using those three by three flat "wings") as how to build
it, but I'd like to see what you'd recommend.

thanks!
Calum



Message has 1 Reply:
  Re: My First Stacking Attempt
 
(...) Ummm.... I probably wouldn't do it, but I haven't seen how well the spinning tires work. I am also partial to minimizing motors. But your plan is a lot simpler. (...) Sounds like you are well on the way! I will either bring a demo model of my (...) (26 years ago, 8-Feb-01, to lugnet.org.ca.rtltoronto)

Message is in Reply To:
  Re: My First Stacking Attempt
 
I just had some more thoughts on your mechanism... Using curved guides up front should elimenate most of your block alignment problems. Use a couple of those big sloped znap pieces like Chris did. This way, you would only have to drive the grabber (...) (26 years ago, 2-Feb-01, to lugnet.org.ca.rtltoronto)

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