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Re: Still a trade secret...
Posted by Glenn M. Krcek at 1/27/2001 9:15 AM EST
Other on team #226, Manhatan Project, from Troy and Athens High and GM CRW.
In Reply to: Still a trade secret...
Posted by Joe Johnson on 1/26/2001 9:18 PM EST:
:
:
:
:
: I will say this, you don't give your wheel diameter,
: but at 64 to 1 from the motor the output shafts in low
: gear and another 3 to 1 on top of that, even with an 8
: inch wheel you will not be setting any speed records
: (unless of course you shift your transmissions which is
: tricky but possible with good design and good
: software). By the way, you will have something like
: 150 lbs available per motorized wheel at this ratio and
: the 8 inch wheel. You will have a difficult time
: getting that much tractiion on the carpet (imho).
Dear Dr. Joe,
We've calc our approx top speed w/ the drill motors switched in the 64:1 position to be the following:
20000rpm /64=312.5 say 300 rpm
300 rpm / 3 = 100 rpm @ wheels
100 rpm x 8Pi (for 8"dia whls) = 2513"per min say 2500"
2500 / 12 = 208 ft/min approx
I am wondering if we blew it somewhere? I am thinking we have sufficient speed. We are concerned if we'll have sufficient traction, but addressing that with a special wheel design.
Thanks for the reply.
GMk
: Joe J.
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