Magnet Motor from Argentina, part2

[Jdo300]

Hi gn0stik,

I wouldn't say this thread is dead at all. Most of the people who are actually building things are busy in the garage working on their models. I have already designed a 3D model of the Torbay motor (different than the one I posted pictures of) which I just need someone to fabricate. If anyone here on the forum has CNC capabilities, let me know and I would be glad to pass the CAD drawings along to you. I designed it so that all the pieces could be made out of 0.5", 1", and 1.25" thick plastic which can be bought online from www.mcmaster.com for around $100.

God Bless,
Jason O

[FredWalter]

I have already designed a 3D model of the Torbay motor (different than the one I posted pictures of) which I just need someone to fabricate.

Why not just post them here, in an attached zip file?

I designed it so that all the pieces could be made out of 0.5", 1", and 1.25" thick plastic

What is the maximum width and length of the pieces? Can they be cut out on one of the small milling machines that are commonly available? (Sherline, Taig, Sieg X1, Sieg X2)

which can be bought online from www.mcmaster.com for around $100

Have you looked into how much the magnets and other parts will cost?

[gn0stik]

Alright! sounds awesome. Well, if we can get one rotor, one stator, etc., etc.. fabricated, we can cast more ourselves out of alumilite casting resin, and make kits.. Did you design all parts? including the base, and topcap? I would suggest a base with grooves that the stators can slide forward and back in, for adjusting the size, etc., There are even different types of alumilite to to choose from.. However, I'm thinking that there are brass parts that we will need. I know torbay himself has made them from wood and plastic, but why did he specify brass to begin with?

At any rate, once we get a runner, we can cast parts from it.

[Jdo300]

Hi Fred and All,

Yes I designed all the pieces to build a complete motor including the rotor cap. When I designed this model, I specifically scaled it to fit some standard sized neo magnets that can be purchased cheaply from www.kjmagnetics.com. I think the total price for the stator magnets came to under $50 (rough guestimate). As for the rotor magnet, my friend Dan LaRochelle happened to have some custom made 4" OD, 180 degree, radially magnetized arc magnets from another project he did a while back so I scaled the model I created with the intention of using his magnets. I'll have to get in touch with him to find out how much it would cost to have more of them made though.

As for the total size of the plastic that would be needed. I'll have to check the model to see but off hand, I can tell you that I made the base 12" in diameter (can?t remember if it was 1" or 1.25" thick). The other pieces could probably be cut from a 12" x 18" piece of 1" plastic and a 12" x 18" piece of 0.5" plastic. But I'll get back with you to tell you all the specifics.

The model is designed after the wooden one that Omnibus posted. So the cap has the spiral ramp in it and the base of the rotor has a series if holes and to place the lifting roller in it. The entire model is completely adjustable to make tuning a synch. I'll upload some screenshots and parts later this afternoon. If anyone has any preference for a particular CAD format, let me know. Otherwise, I'll upload each piece as a DXF file. Each piece was designed to make it easy to fabricate on a three-axis CNC Minimill.

God Bless,
Jason O

[FredWalter]

I can tell you that I made the base 12" in diameter (can?t remember if it was 1" or 1.25" thick). The other pieces could probably be cut from a 12" x 18" piece of 1" plastic and a 12" x 18" piece of 0.5" plastic.

The base sounds too big to be cut out on something like a Taig, Sherline, Sieg X1 or Sieg X2 milling machine. The workspace on your typical small desktop milling machine is pretty small.

It sounds like a larger mill, or a small CNC router, would be necessary to fully automate the process.