new coil

[willib]

While my new coil is curing , i thought i would update you all on what i've been up to .

the new mini gen is coming along

it is 16 poles 12 coils 7/8" dia x 1/2" neos

i'm using .045"dia wire (two in hand) around 78 effective turns , stator will be 1/2" thick.

i went with two in hand because the resistance will be lower , i'm figuring 0.252 ohms per phase , roughly

[willib]

the last picture shows i was off a tad on the width,it varies from 0.507" to 0.514"

[willib]

this is its present form minus a segment

the stator is in four segments





if ya want to see something in particular i've got lots of pics

[vawtman]

Hi Willib

 How are the coils attached to the stator plates?

[willib]

good question !

i had ideas to use the mounting bolts as tiepoints (connections to coils), but now i'm not so sure

since i put the mounts so close to the rotors i had to use stainless bolts and nuts

i've got other pics in my files , way ,way down at the bottom

[willib]

here i am applying resin to the coil , about two layers into the process , i think it was.

i cant believe that i'm still flipflopping on whether i should continue to wind two in hand or not.The resistance will be twice as much ,cuz the coil will be half as thick, 0.250" , but single strand coils are easier to wind, and i could allways double them up , besides then i could put some ferrite in between them if i wanted , i think i just answered my own question Thanks !!

this is the wiring diagram i was proposing,

http://www.otherpower.com/images/scimages/2965/wiring_diagram

this is an early view of the stator, before i cut the perimeter and drilled the last four mounting holes

[terry5732]

Although the stainless isn't magnetic it is succeptable to eddy