Subject:
|
Re: The Great Ball Contraption
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Fri, 21 Jan 2005 21:30:04 GMT
|
Viewed:
|
5548 times
|
| |
|
|
In lugnet.robotics, Jordan Bradford wrote:
| |
In lugnet.robotics, Steve Lane wrote:
| |
In lugnet.robotics, Steve Hassenplug wrote:
| |
I’m not exactly sure how many “teeth” = 1 stud, but I know it’s not a whole
number.
|
It’s exactly 2.5. 10 teeth on a gear rack, divided by 4.
|
I’m using two upside-down 1x16 TECHNIC beams to straddle 24-tooth gears on
each end (see my great ASCII art below, top-down view, not to scale). I might
not even need tension in the chain at all; the tread links slide on the flat
bottom part of the beams, and that seems to work fine. I haven’t yet built a
support structure to test the chain for real.
|
I have just placed wheels regularly spaced along my chain to support it.
| |
My “buckets” are simple and work pretty well, even at steep angles. Every
fourth tread link has a 1x4 plate on it, and on each plate are two of those
2x2 right-angle plates making a squarish area for the ball to rest in. Again,
some beautiful ASCII art:
Step 1:
_______
|_______| <- that's a 1x4 plate
Step 2:
_ _
| |_ _| |
|___|___| <- those are right-angle plates
What other bucket designs do people have?
|
Mine are similar, but use a 1x3 plate with a 1x1 plate with tooth on each end,
at a slight angle, and another 1x3 plate on top. I was finding that even with an
accurate feeder, they were occasionally bouncing over the side when I used 1x2
plates on each end.
ROSCO
|
|
Message is in Reply To:
 | | Re: The Great Ball Contraption
|
| (...) I'm using two upside-down 1x16 TECHNIC beams to straddle 24-tooth gears on each end (see my great ASCII art below, top-down view, not to scale). I might not even need tension in the chain at all; the tread links slide on the flat bottom part (...) (19 years ago, 21-Jan-05, to lugnet.robotics, FTX)
|
94 Messages in This Thread:
 
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
