How much wire needed?

[shutterbug1]

Hi everyone,

     I'm building  the 20' alternator from forcefields design. Using #15 awg- 3 strands and 45 turns. My question is will 3 rolls of 100ft wire be enough to wind the 15 coils. I could work out the math but I'm lazy and i'm sure someone here knows! Also has anyone ever tried using some of the magnet wire with the solderable insulation? Just curious, I've been reading and researching again. I would love to have some room temp superconducting magnet wire to play with. Maybe next year. Thanks very much for the responses I got  from my question on cutting out the rotor blanks. I decided to go with the laser cut. The best estimate I came up with was $260 for 2 rotor plates.

                                                                     Mike Grace

[wooferhound]

I am reposting shutterbug1 comment about CADD Files.   woof.

Hi everyone,

        I meant to mention this is my last post-duh... I drew cad files of the rotor plates, magnet templates and the stator mounting bracket. If anyone wants a copy let me know and I will post them. Thanks.

                                                              Mike Grace

[luv2weld]

Mike,

I would really like to see the drawings. If you cannot post,

would you be kind enough to email them to me??

Thanks

Ralph

[Flux]

I don't have the inclination to work out the length of wire if you don't.

I suspect that 100ft will not go very far as there will most likely be over a foot per turn.

For this application where the windings are subjected to possible severe overload for short periods I wouldn't go near the solderable wire. It is more suited to electronic components and small transformers running at the lower end of class F and not subjected to overload. Instead of carbonising and failing slowly like the other coatings it disintegrates spectacularly at a certain temperature leaving virtually bare wire and a nasty stink of toluene diisocyanate.

Flux

[Tritium]

They state 25 pounds of wire in the stator for the 20' mill.  That's about 3 10lb rolls. About 100 feet of wire to the pound. You will need 2500+ feet or so.

Thurmond