Building on the Calloway V Gate principle.

[dayfox]

First off, go to http://www.youtube.com/watch?v=kCr3lOhMJCg&mode=related&search=

Skip to the end (about 20 secs before it finishes). What if you fixed the skateboard wheel to the axle, attach to the axle two "spirals" of plastic, http://www.photolava.com/view/3ntj.html (excuse microsoft paint); either side of the wheel. Then you make another axle with the magnet and rest it on top of the cams, so for every rotation, the cam moves the magnet away, as needed for the wheel to rotate.

Concept here (ms paint again!)
http://www.photolava.com/view/3ntk.html

If you need more explainations, email me sr.7.one [at] gmail [dot]com
-or just email me if you have any ideas.

Cheers

[gyulasun]

Hello,

I think it would be worth experimenting with your suggestion, the crucial area that needs the best engineering possible  is where the cams touch / contact  the second axle that holds the (reciprocating) magnet.  If you could make the friction at the minimum possible between them, it would be a better chance for a self-runner.  Maybe using ball bearings on the second axle that could roll on the thick enough surface area of the cams?  Still the suspenson / appropiate holding of the second axle is also of importance.

Can you make some experiments on your idea with the cams and the second axle?

There is the second part of the video you referred to above, see this link:

http://www.youtube.com/watch?v=uHffliC2whk

Regards
Gyula

[dayfox]

I don't really have the tools to carry out such an experiment; but if anyone else does, I would be interested if you could email me the results.

[JamesThomas]

I had this very idea after watching these two videos; in fact if you go to the second video, and go to the messages left a month ago you will find one left by JamesThomas that suggests the cam idea.

Now as I recall, as I was researching prier to actually doing the experiments, I came across on the web someone who appeared to be very knowledgeable regarding magnetics saying that the hand action of moving the stator magnet away from the wheel magnets (which can be done in a lot of other configurations besides the V-gate) is doing way more work than can be derived from the spin of the wheel...which would be needed to make a mechanical cam mechanism work. This dissuaded me from moving ahead with the idea.

Having not done the experiment myself, I'll never really know.

j

[kallstrom_74]

i would like to try this skateboard wheel out...i have tried to count how many magnets he has and so...can anyone tell me how many it is needed and what kind..and the size of the wheel...and perhaps how to draw the lines...and perhaps any improvments that can be made...i have tried to contact him on youtube but he will not awnser