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Unread 15-05-2014, 12:56
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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
Posts: 2,303
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Re: pic: Killer Bees Buzz19

Quote:
Originally Posted by Jim Zondag View Post
The catapult has 6 Steel Extension springs. It has a lead screw adjustment on the spring deck which can adjust the spring draw about 5". Total spring force at max draw is about 1000 lbs. Overkill? probably: Awesome? Definitely.
We found that harder was better for shot repeatability.
Would you be willing to share the motor gearing and lead screw type (Multi-start? Single start? Diameter? Etc.) for this setup? I encouraged my team in this direction this year and they abandoned it after what I had deemed not enough prototyping. Alas.
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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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