Scioly.org

Table of Contents:

• Trajectory Wiki
• Practice vs. Device debate
• Weight Post #1
• Clarification of powered by Non-metallic elastic solid
• Device design process by fleet130
• Calibration Charts
• Projectiles and Drag
• Possible Triggering Device
• Weight Disscussion

Original post:

3 hours on weekends and 2 1/2 hours almost everyday in the 2 months before states (in May)

i'm thinking about doing trajectory next year? does anyone from Div B have any ideas about how the device should work, like a catapult or slingshot, or any tips on how to build one

Well I personally am still milling over this but a thing to take into account is that rubber expands when heated so although rubber tubing sounds like a good idea it has it's drawbacks if left out in the sun.

which stinks here, because its always hot, i was thinking about asking the div b team in my area for their design, and then tweaking it to make it better

Well here's what the key is consistency the top 5 teams at nationals this year hit both pins but the top team hit both pins twice in the same spot. Number 2 you might like a device to help you aim. Number 3 the more options the better. That's all for now.

My teams trajectory design was basically two pieces of wood with rubber tubing between them. It worked quite well.

so it was similar to one of those things u would set up to throw water balloons out of, kinda like a slingshot

Yes, exactly like a slingshot, only bigger.

EDIT/ I believe I have a picture of the trajectory team using the catapult at states in my coaches classroom. I'll get it tomorrow and post the picture.