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Unread 14-01-2013, 00:30
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Ether Ether is offline
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Re: Wheel Types: What's best, and why?

Quote:
Originally Posted by ksafin View Post
I meant 2010 wheels, actually.

1) Linear
2) One
3) CIM
4) Both 1:2.375 and 1:1
5) Don't have the means to check most of those, but it was hooked up directly to a battery and the battery voltage was about 12.75 V
6) Probably around 1/2"
7) No
8) About 15 feet with a max height of around 6/7 feet, or up to 25 feet with a max height of about 4 feet. Can't seem to get a good distance and good height at the same time. Also, it seems to be going rather slow compared to other teams shooters (meaning the velocity of the frisbee as it leaves)
Here are some random thoughts (it's getting late, turning into pumpkin):

Maybe they're out there, but I haven't seen any videos of successful one-wheel linear shooters.

Too bad you don't have any bird's-eye-view shots with a high speed video camera so we could see what the bee is doing as it passes thru. It's probably slipping badly.

Your guide rail is a nice shiny metal surface. It should be grippy in order to get more spin on the bee.

Your wheel speed may be too fast. According to some tests conducted by Team 2073, above a certain wheel speed the exit speed of the bee actually decreases, presumably due to slippage.

Try running the CIM at 10 volts instead of 12, and put some grippy tape on that shiny metal guide rail. I don't think this will get you all the way to where you want to be, but it might be a start.

You're probably going to have to add a second wheel, or go with a curved chute.

If anyone has made a successful one-wheel linear shooter, please tell us how you did it and post a video.