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Unread 06-02-2012, 07:04
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AKA: Patrick Freivald
FRC #1551 (The Grapes of Wrath)
Team Role: Mentor
 
Join Date: Jan 2007
Rookie Year: 2001
Location: Naples, NY
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Re: Gear ratios for launcher

Quote:
Originally Posted by DampRobot View Post
My team is using a similar set up. Were getting about 16ft using belts driven by 1:1 sprockets off a AndyMark gearbox (the one for the Fisher Price). Accuracy is OK, but we've really been underwhelmed by its performance.
Accuracy at key range will be more important than being able to chuck a ball 30+ feet, IMO.

Quote:
Originally Posted by Ether View Post

What voltage are you running the motor(s) at? i.e. what is the motor voltage when the wheel has come up to speed and no balls are being fed to it?

They were using home-built speed controllers with a knob control -- I'm not sure what the duty cycle voltage was. (I wasn't there... had a funeral this weekend, so Saturday was the first FRC day ever without me there. Quite weird, I must admit!)
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Patrick Freivald -- Mentor
Team 1551
"The Grapes of Wrath"
Bausch & Lomb, PTC Corporation, and Naples High School

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