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Unread 26-04-2009, 21:49
Steve_Alaniz Steve_Alaniz is offline
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Re: Questions about crab/swerve drive.

Quote:
Originally Posted by AdamHeard View Post
I'm seeing an awful lot of people jump on the swerve guru bandwagon recently, and I'd to say something about that.

Before you hand out advice that someone may take as 100% perfect, think for a moment, do I REALLY know what I'm talking about? Can someone take my words, act on them, and be satisfied with the results?

Successfully using a swerve this year was a challenge, but also one much less so than on carpet. Most swerve designs I have seen this year would probably result in severe damage to the modules/turning shafts if they had been used on carpet.

Since I doubt we'll be getting anything other than carpet, that's what a new crab should probably be designed around.
Could you give some examples please? Any drive that might stall will have problems but that is pretty much ...any drive. I think you are referring to a transmission problem that might occur under stress but I wouldn't want to put words in your mouth. You are correct that the slick surface allowed for easy turning but our drive actually worked better on carpet, so it was actually a challenge for the drivers to adjust to the regolith.
Our shafts were 1/2 in steel so they were not going to break but we did worry a bit about the transmission so we used the banebot 16:1. I am under the illusion we were pretty bullet proof. At least we plan to build on what we learned this year.
 


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