Fishing line traction drive August 07, 2014 01:14AM |
Registered: 9 years ago Posts: 31 |
Re: Fishing line traction drive August 08, 2014 02:26AM |
Registered: 11 years ago Posts: 173 |
Re: Fishing line traction drive October 14, 2014 07:09PM |
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Re: Fishing line traction drive October 14, 2014 09:57PM |
Registered: 9 years ago Posts: 31 |
Quote
jbernardis
I wish I could visualize this a little bit better. I see in the photo that one side of the assembly has 4 bearings and the other 3. I guess this is to allow for a downward spiraling. On the side we cannot see, what is the arrangement?
You say your prototype has 5 loops around the center, but in the diagram I only see three. I assume that the diagram is simplified, and that you actually have an additional layer in your implementation.
I also assume that you have those bearings so tightly bolted together that the groove between them will not let the string slip through
I guess if I try to cobble something together that some of these questions will be answered.
Re: Fishing line traction drive October 14, 2014 10:43PM |
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Re: Fishing line traction drive October 14, 2014 11:51PM |
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Re: Fishing line traction drive October 15, 2014 11:36AM |
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Re: Fishing line traction drive October 24, 2014 01:48PM |
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Re: Fishing line traction drive November 25, 2014 07:19PM |
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Re: Fishing line traction drive December 15, 2014 10:54AM |
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Re: Fishing line traction drive December 15, 2014 07:41PM |
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Re: Fishing line traction drive December 30, 2014 11:20PM |
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Re: Fishing line traction drive November 05, 2015 04:49AM |
Registered: 9 years ago Posts: 1,035 |
Quote
jbernardis
I'm actually in the process of moving back to the spool approach - for 3 reasons. 1) This approach is a nightmare to string, 2) unless I kept the system under extremely tight tension, I found that the string would pop out of the grooves too often, and 3) When I hit the end of travel, the string would slip. I know that I should never reach the end of travel, but if it would slip under these circumstances, I don't have confidence it wouldn't slip under others.
I was very close to getting the spool approach to work. I wish I could find larger spools, but for now, I am going with printed spools. I am a mentor on my local high school FIRST robotics team. The teacher has 2 lathes and a milling machine. I might ask him if he could make me a few aluminum spools.