SPRING

We bought a toy for use the spring that this had, for we could do prototypes, at the time of testing the toy, we realized that this provided a new idea which we had not worked, that was the convination of the spring and the tube sucking the air, an interesting idea.

CONCLUSION:

Expected positive feedback: Fly about 15 meters.

Unexpected positive feedback: It's a good combination. 

Expected negative feedback: It's needed much force for Jana this mechanism is not good

Unexpected negative feedback: /

We perform different ideas for a prototype, we want to use elastic spring like mechanism principal, these are some of the ideas realized.

 

Sketches 1

Sketches 2

Specifications benchmark

• Diam. 195 mm
• Spacing 35-45 mm
• Advice from maker: 
• I've used 'FIRST CIM 12V 5280 RPM' motors, but would recommend them only if ou can't find anything better (100-200W, 3500-5000 rpm under load and long shaft). They are just too powerfull for this application and draw quite a lot of current. Currently I use LiPos, but eventually I want to have two UPS batteries connected in parallel. Wheels are custom made from MDF. They're twice heavier than wheels used in professional machines, so I'd recommend using original ones if you can get them. The wheels have to be well balanced otherwise the cause quite violent vibrations. 

BENCHMARK #13

Swing

BENCHMARK #12

Spring

BENCHMARK #11

Turning wheels

BENCHMARK #10

Hammer

BENCHMARK #9

Air pressure

BENCHMARK #7

Jerry can play alone with this machine. 

BENCHMARK #8

Jai Alai

     

BENCHMARK #6

http://makezine.com/projects/Fetch-O-Matic/#.UFFjZY1lRSk

A box with a funnel to put the ball in. It's a DIY-guide to make the launcher yourself. The mechanism is a motorised wheel. 

BENCHMARK #5

DIY ball launcher made with wood and a wheel with motor. The dog can launch it himself, there is a big area with a funnel to make the ball go in the right direction. A wheel gives the ball it's right speed to be launched in the air. 

BENCHMARK #4

https://www.kickstarter.com/projects/299675463/ifetch-the-ball-launcher-for-dogs

Kickstarter is a small product. You put the ball in the entrance and a couple of seconds later, the ball is launched. Mechanism: motorise wheel.

BENCHMARK #3

http://switchgaming.blogspot.be/2012/02/switch-dog-ball-launcher.html

Ball launcher attached to a wheelchair. The product works with the mechanism of a wheel. The ball has to be put in a tube before launching. With a push on the button, the ball is launched. 

BENCHMARK #2

http://switchgaming.blogspot.be/2012/02/switch-dog-ball-launcher.html

Ball launcher designed to play with dogs. It works with a remote control so it's adapted for users in a wheelchair. The dog fetches and brings the ball back to the shooting unit. 

BENCHMARKS #1

Catapult