Team 1646 Shooter Prototypes Video
 

http://www.vimeo.com/2823666

Over the past week, 1646 has been playing around with different shooter variations to see how the ball would react. Check it out.

Warning: video features gratuitous amounts of Kyle Love.

Re: Team 1646 Shooter Prototypes Video
 

UNHH SON!!!!

Re: Team 1646 Shooter Prototypes Video
 

Nice! Do you plan to build a goal (trailer) and see how it performs with topspin, backspin, and neutral (two rollers)?

Re: Team 1646 Shooter Prototypes Video
 

Yes, the trailer was finished after the videos were shot but we were simulating the best we could at that point. We found we got the most distance when we ran them at the same speed. When we tried putting some backspin on the ball by running one slower, it didn't shoot very well, but we also didn't spend a ton of time on that either so I'm sure it could be perfected.

Re: Team 1646 Shooter Prototypes Video
 

Good work guys!

Our shooter is producing very similar results.

Was the shooting the ball into a ramp part of an initial design consideration or was that just a quick way to prototype launch angle?

Re: Team 1646 Shooter Prototypes Video
 

Thanks for posting this! It will be very helpful as a frame of reference for teams who want to use shooters.

What gear ratio did you use on the CIM (looks like 1:1)?

Re: Team 1646 Shooter Prototypes Video
 

One improvement, when the ball is going to the goal in slow motion, you should play chariots of fire...

but in all reality nice design

Re: Team 1646 Shooter Prototypes Video
 

"Sorry, this video no longer exists":(

I'd like to watch...

Re: Team 1646 Shooter Prototypes Video
 

Try again...Worked fine for me. :)

Re: Team 1646 Shooter Prototypes Video
 

both prototypes used an AM Gen2 gearbox in high gear and a 1:1 sprocket reduction, so I think the reduction is 4.17:1. I know some other teams run faster, but we figured this gives you some torque to keep the wheels up to speed if you're planning on firing a lot of moon rocks in a short span of time (wink wink nudge nudge);)

Re: Team 1646 Shooter Prototypes Video
 

No chance...

I tried with Firefox, Safari and IE and couldn't see...
May be some problem with IP range????

Re: Team 1646 Shooter Prototypes Video
 

A little of both really. We just used a bunch of wooden boards to see how much the ball would compress and shoot. Eventually it gets to the point where the ball is compressed too much and springs out as it's coming out.

Re: Team 1646 Shooter Prototypes Video
 

Some say "More Cowbell" - I say "More Kyle Love"

Re: Team 1646 Shooter Prototypes Video
 

Yeah we discovered the same thing...Our prototype allowed for compression of the ball from 5 inch up to 9 inch, so we saw how the ball reacted at a bunch of different compressions.

Re: Team 1646 Shooter Prototypes Video
 

i agree with Mr. Taylor needs more "uhh son!"

Re: Team 1646 Shooter Prototypes Video
 

Well you didn't spend 30 hours in a minivan with him!

There is a definite limit of how much Dr. Love I can take.

Re: Team 1646 Shooter Prototypes Video
 

http://www.vimeo.com/2827930

More Kyle Love.

Re: Team 1646 Shooter Prototypes Video
 

thats great i hope that the sand paper falling off isn't common

Re: Team 1646 Shooter Prototypes Video
 

cool stuff. Can't wait to see your final design

Re: Team 1646 Shooter Prototypes Video
 

Haha no, that was the very first time we fired it up. The sandpaper roughs up the balls pretty quickly, but it also grips them extremely well.

Re: Team 1646 Shooter Prototypes Video
 

i like alot:D :yikes:

Re: Team 1646 Shooter Prototypes Video
 

With our new method that we came up with tonight, we shot balls about 20 feet accurately running on a 1,000 rpm drill, so with a real motor it should get interesting.

Re: Team 1646 Shooter Prototypes Video
 

and whats your new method?

Re: Team 1646 Shooter Prototypes Video
 

And...I have not had that pleasure. And...I can see your point. And...you may have something there.

Re: Team 1646 Shooter Prototypes Video
 

The final shooting design is getting it's final tweaks this weekend and production is starting to being! Exciting times at Lafayette Jeff High School.

Re: Team 1646 Shooter Prototypes Video
 

nice, we will hopefully be prototyping the next few days and also start building...

Re: Team 1646 Shooter Prototypes Video
 

I have had many thoughts about using sandpaper this year, but would it be legal to do the shooter wheel with it? Due to the damage it does to the ball.

Re: Team 1646 Shooter Prototypes Video
 

uh-son

BEASTY!!!!!

Re: Team 1646 Shooter Prototypes Video
 

Your prototype seems to work well. Do you plan on aiming with the camera?

ps I love the dramatic music

Re: Team 1646 Shooter Prototypes Video
 

More then likely.

Re: Team 1646 Shooter Prototypes Video
 

We are considering driving the ball throwing wheels directly of the 2 1/2 CMI Motor and controlling the motor speeds.

We have not been able to locate a coupler to go from the 8mm motor shaft to the .5" shaft in the wheels or a motor busing to do the same

In a high torque appication like this a key way would be necessary making this a difficult part to make or purchase.

Anyone know where we can purchase this strange bushing?

Re: Team 1646 Shooter Prototypes Video
 

We encountered the same problem. We ended up using a Poly-Cord belt for to drive our shooter. We found pulleys at the hardware store but they only came in 1/2" and up. So we started looking around and found a shaft collar/bushing that is about 1 1/2" long and has two large set screws. It just so happens that this 5/16" collar fit the 8mm shaft and that it was exactly 5/8" in diameter. So we bought a pulley to fit the 5/8" bushing.

I don't know about a keyway though. We were able to do it without one simply because our pulley had a gigantic set screw and our bushing has two. If you find that a keyway is not necessary though, definitely try poking around the hardware store just to see what you can stumble across.