Gravity Motor Patent 7/10/08

[CLaNZeR]

Well the wheel build went well today.

Here are some photo's and a video showing it winding down. I think I got the bearings spot on as takes over 10 minutes to wind down from 50 RPM

First I drilled a center hole and got a 1 meter length of extruded ally and attachd a pen to it.




Marked out the lines for each arm.


Now made an attachment for the Router.




It cut out the circle perfect






Next was to cut out some bearing plates.


And lathe out a insert to keep the bearings spaced so they can be done up tight later when on the mount.


Bearing plate mounted


And finaly it all up and mounted, ready for a Wind-Down test.


Here is a movie showing the wind down. Very impressed.

http://www.overunity.org.uk/MGW/CLaNZeRMGW5.wmv

Now to get on with the next stage.

More to come

Cheers

Sean.

[therealrasta]

@Clanzer

Impressed,Envious, and all out mortified... If anyone has a free spinning wheel it is you!!!.. WOW!.. Please coat that MDF with some moisture resistant substance.. It is almost perfect! Great Job man.. So your using magnetic bearings?? Joking.. I know you not..LOL..

Great Job!

EDIT 1 -- Oh I figured it out.. It is the mystical powers of that pyramid sitting behind it..lol 

EDIT 2 -- Please tell me what model bearings you have and where you got them..

EDIT 3 -- I see you used all torque screws.. Did you actually use a torque gauge too?

[CLaNZeR]

EDIT 1 -- Oh I figured it out.. It is the mystical powers of that pyramid sitting behind it..lol 

EDIT 2 -- Please tell me what model bearings you have and where you got them..

LOL  well the Pyramid had to be usefull for something hehe

The bearings are very small but very tough and can easly take the weight of the wheel. I lathed down the shaft out of hardened steel rod and fit perfect must admit.

As you can see by the video the reduced friction by using small bearings is incredible when you have got a wheel that weighs a fair amount.

I used to use these bearings when I building my CNC machines and originally got them from a supplier in Germany. Have not got the details here now as was a couple of years ago.

These are just a bit smaller than skate bearings.

Cheers

Sean.

[therealrasta]

@ Clanzer

Cool.. Thx for the info.. I just got some bearings today to use on a 3/8 inch Diameter Aluminium (however you spell this) rod.. I got high RPM RC axle bearings.. Very small.. Hope it spins half as good as your.. But mine are gonna be used on AQ.. SOG.. thingy..

[TinselKoala]

TinselKoala:

Those bearings don't look to be very free to me at all.

Even without the magnets installed your wheel comes to a fairly quick stop and does not even try to rotate in reverse. Either the wheel is perfectly balanced or you have a fair amount of drag in those bearings. I'm betting the latter. I've got bushings here that would allow the wheel to spin longer than those bearings.

Are there rubber seals in them that you could remove?

You evidently aren't watching the same video. In MY testing video, there are several trials where, at the end of the trial, the wheel rocks back and forth several times between the energy "hills" caused by two rotor magnets interacting with a stator between them. The bearings are very free indeed. Go back and take another look if you don't believe me.
There are no "rubber" seals on these bearings, and they are perfectly clean; they are designed to run without lubrication..
I seriously doubt that your bushings would cause a spin longer than these bearings. Do you think that I do not have bushings available, made of Oilite, Teflon, sintered bronze, graphite-graphite, or  ceramic refractory materials, etc. and that I was too lazy to try them?
Oh, ye of little faith...