Cast my stator today.

[fabricator]

It is in the mould setting up right now, the coils were all wrapped around the circumference with five wraps of scotch 35, all connections were in brass tubing crimped and soldered, all the connection wires were wrapped with scotch 35 also.

[dlenox]

Fabricator,

I like it! Looks like you took my advise and insulated the phases and coils about as much as practical!

This should hopefully guard you against shorts (like my recent one).

I assume that the stars are where the wires/bolts will come out of the mold? Another suggestion would be to move #2 and #3 closer this will give you the line between #1/#2 in which to attach a stator support.  Assuming that you are using 6 attachment points that means a hole in the stator at a point between every other coil.

Before potting, put some wax on the bolt threads to make cleaning them up easier as well.

Dan Lenox

[Tritium]

are those coils vinyl jacketed wire or enameled magnet wire?

Thurmond

[nekit]

Looks good.  What size wire and # turns did you end up going with?

[Shadow]

Very  nice Job! I'm trying to figure out your coil arrangement,Is it 4 coils per phase? Good work.

[WGB]

VERY VERY Nice!!!

Yes, I too would like wire size, turns, voltage, etc.

[fabricator]

You are correct, your shorted stator post is the sole reason for all the tape, it's nice for once to have somebody else doing the guinea pig thing

All the power out wires are about an inch apart right in the muddle of the #2 section.

I melted stick wax on the mould first then paste waxed the whole thing, it fell right out today, there are a few bubble hole that need filling but other wise looks pretty good.

[fabricator]

enameled magnet wire that I got from a local industrial motor repair outfit.

[fabricator]

14ga 59 turns as per the Dans 17' machine.

[fabricator]

Yep four coils per phase.

[fabricator]

One of these days I'm gonna take a pic of my gear motor powered coil winder, with foot pedal on off switch, it worked really good.

[fabricator]

14ga two in hand, 59 wraps, 48 volts.

[dlenox]

fabricator,

After thinking about it a bit I've come to realize that using tape around the perimeter of the coils will inhibit the resin from saturating into the outside edges of the coils.

May not be a big deal, but if you are going to insulate the coils from each other perhaps using a non-conductive spacer might be preferable.

Dan Lenox

[fabricator]

Too late now , I vacuume bagged the casting so hopefully that took care of any bubbles.

[Timeless Turbines]

I have been reading this awesome site for a year, Going to start building a 17 footer soon and I would like to wind it for 240 volt out put, Has anyone done that.