Thread: Robot Speeds - Opinions sought
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Unread 23-06-2002, 23:03
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#0047 (ChiefDelphi)
  
Join Date: May 2001
Location: Pontiac, MI
Posts: 21,214
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Try this: Year of the Flaming Victor (or Motor)
Posted by Joe Johnson.   [PICTURE: SAME | NEW | HELP]


Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.

Posted on 2/8/2000 2:06 PM MST


In Reply to: Re: The Year of the Shifter posted by Greg Mills on 2/8/2000 11:45 AM MST:



I don't know what you folks are thinking but if what I read here is any indication, a lot of you are heading for a world of hurt (imho -- Greg Mills, Baxter Mountain Home, and other bastions of sanity excluded as usual).

If you are talking about gear ratio where you realistically expect to reach 20mph I think you're crazy.

Shifting is tricky business, not for the faint of heart.

20 mph is way to fast to actually control unless you are in a parking lot somewhere (again imho).

Also, do you realize what rpm an 8 inch wheel has to spin at to go 20MPH? 840rpm!!!!

We are talking about a 25:1 ratio from the armature of the drill motor to an 8 inch wheel!!!

If any team uses such a low ratio, I predict that either the Victors or the Motors or both will literally catch fire at some point during the competion.

(Teams bold enough to shift on the fly are free to tell me that they told me so, but I don't expect a lot of teams to actually be able to carry this off effectively).

Shut my mouth at the Nationals.... Until then, I will remain skeptical about 20 mph robots.

Joe J.


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