thin plywood stator
By hiker, Section Homebrewed Electricity Posted on Thu May 13th, 2004 at 04:20:11 AM MST
getting there

don"t try this if you have no pachince--took 4 hours just to wind the coils !!and 4 more to go- using double stack cermanic mags.--still have bleed over on back side of disks--i"ll try using a 10" saw blade on the back of each one--then  cut out plywood disk incerts ,to help hold mags in..still a ways to go..later :}..

thin plywood stator | 4 comments (4 topical, 0 editorial)

Re: thin plywood stator (none / 0) (#1) by franknbuger on Thu May 13th, 2004 at 09:04:41 AM MST (User Info)

Hey Hiker. I tried your minnie mill design it worked real good,and was easy to make.Thanks for the ideas.What do you call this new alt you are making ? Why are the coils switching directions,are they phase changes? Please post more info when you can.      Frankenbuger

Re: thin plywood stator (none / 0) (#2) by Wolfie1 on Thu May 13th, 2004 at 12:16:06 PM MST (User Info)

If I understand the picture right, the coil wires are threaded through the holes. In the picture, the ones that are 3,6,9&12 o'clock, have their tops and bottoms on this side of the board and their sides on the other side of the board. The coils in between have their sides on this side of the board and their tops and bottoms on the other side. Making the coils this way would save costs in not having to 'cast' it with epoxy but takes more labo(u)r and will likely have larger gaps. Certainly a budget compromise. We all want to hear how well it works out. Martin. [ Parent ]

Re: thin plywood stator (none / 0) (#3) by Norm (peppysue@suite224.net) on Fri May 14th, 2004 at 07:36:14 AM MST (User Info)

Why not just cut slots in the plywood ...make coils the regular way .... take the coils and form them around a strip of wood and slip them over the ends of the plywood?              ( :>) Norm ( :>) Norm

Re: thin plywood stator (none / 0) (#4) by devoncloud on Fri May 14th, 2004 at 09:32:46 PM MST (User Info)

This is giving me all sorts of ideas... First, using norm's "slot" method would make this alot easier.  Another way would be to get two thin pieces of plywood, cut holes where the legs of the coils would sit and route grooves where the top and bottom of the coils would lay and then wood glue the two peices of plywood together.  The grooves and holes of course would be exactly the same on both pieces of plywood so that when you glued them together, the sides of the coils would be exposed on both sides while the tops and bottoms of the coils would be inside the plywood laying in the grooves you routed. This would be strong and would work as good as setting it in Resin, with one rather great advantage.     That advantage is that with the coil legs exposed to air, your coils can cool off alot better!  This is one of the major setbacks with setting the stator in resin, which is it insulates the coils and they end up holding heat more than if they were in the open.  Sounds like a winner to me! Devon

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