If you want to teach the students about using rubber motors the Fred Pierce articles that I have on the Cloudbuster site are very useful, ever though the rubber batched he uses are long gone.
The spread sheet I also have a download for on the site is a great learning to wind tool. The testing value is very dependent on wining skills, I get better results now than when I did some of the tests as my winding skills are better. The value will increase with maximum torque and turns getting higher.
Fred Tellier
----- Original Message -----
From: dgbj_at_aol.com
To: Indoor_Construction_at_yahoogroups.com
Sent: Tuesday, January 09, 2007 5:30 PM
Subject: Re: [Indoor_Construction] Torque vs winds
David,
For Science Olympiad, the best thing would be to have the kids make their
own torque meters and do their own tests. It is surprisingly easy to make a
workable torque meter. They will learn a lot more that way than from looking
at somebody else's graph.
