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Sounds like a cool project! Pictures would be great.

Let's do this!

Cool demonstration of the magnus effect.

http://www.youtube.com/watch?v=2OSrvzNW9FE

I bought plans from him quite some time ago now and built a great treb by scaling his plans by 2. Does anyone have those original plans anymore? I don't mind buying them but was looking for them so I could let a summer camp instructor use them this year.

If you really want a FAT or F2K, build that! Don't wait for your engineer, build one to throw baseballs in an weekend and use that knowledge to build a pumpkin size version. Better to spend all your energy (and money) building what you really want instead of something to occupy your time. If you nee...

I was at the meeting and Dover is a go and they won't need to shuffle around. The longer distance guys will need to throw over a patch of trees but it seems like we are good.

Where is the video? Youtube?

Gotcha! I was so hung up on FAKA, I forgot you were doing a FAW or RAW. You need to be concerned with stretch of your trigger line more than anything. I would suggest a thin steel cable permanently attached at the middle of the base and have a small loop at the other end. It looks like you have that...

I'm still a little unsure of what you mean. I have the primary trigger which I pull to start the CW falling forward. When the CW arm is about 90 degrees to the throwing arm, I have a secondary trigger which allows the throwing arm to be released and then it can spin around pulling the sling behind i...

I'll be glad to help, I'm just not sure what you mean by the trigger / arm holder line.