pouring my stator

[TheCasualTraveler]

I don't have talc to mix with my resin. What I have that I thought was talc is body powder containing , corn starch,sodium bicarbonate,silica, benzethonium chloride and fragrance. I hate to ask but will that work?

I saw in a post where someone recomended drywall texture. If I take drywall, strip off the paper and crumble the innards will that work?

[Flux]

No knowing how that brew will behave, if the resin is completely moisture proof then ok, but it isn't. I wouldn't want to use it.

No idea what your drywall stuff is, would probably be gypsum here, not much of a thermal conductor but likely harmless.

Marble flour works perfectly well, I can't really see that silica sand wouldn't be ok. If you have that magnetite magnetic sand then I would avoid that but even then I doubt that it would cause much trouble.

I am sure many things will work but unless you use something that has been tried and found to work then you must take a chance.

Here you go to the shop for baby powder ( its talc here and nearly every shop keeps it).

Flux

[TheCasualTraveler]

Thank Flux. I'll go get the talc and stop fooling around.

[TomW]

traveler;

I just had this kind of funny thought. If you use the scented type, when your alternator heats up will the folks downwind get the smell of a freshly powdered baby?

Just thought it was funny.

Cheers.

TomW

[harrie]

Yes, I have used Drywall texture powder in all my turbines, and has worked very well. I have never had any cracks. I dont know however if crushed drywall would work, but do not see any reason it wouldnt.

[blueyonder]

 hi travler its a big day when the time comes to pour your stater.

  it was for me as it was the first time.  had it all planned .

 mix clear lay matting . mix talc and resin . then mix clear for the finish bit of matting.

  got the first stage done ok then was mixing the resin with talc when my heater ran out of gas.

  i was only just able to get the temp up to 20c deg.

 i could feel it get cold allready.

  put the resin and talc mix in ok but then on the last mix i put in more hardener than normal.  thinking it will need it to help it set.

  .put the lid on mould and had to help a friend move sum bits.

 also picked up a new bottle of gas.

  workshop was cold now. but resin had set ok.

  the outside of the mould felt warm .so heat had built up inside.

  later i got stater out of mould .

  i was so happy it looked great.  a new stater was born.

  i needed do a few repairs.  air bubbles..

  it wasent a big stater only six coils. but for me it was great.

   so im wishing you luck with your potting.

  im sure it will be a sucsess .

   can you post a result on how you got on .  maybe you can get a few pics.

  i for one would like to see how you done it.

 and how it looks.

  there must be 1,000s of them about but i just love to see a new one born.

   i think the first one must be the best one as it gets all the tlc.

     just like to say about five days later i put stator on a flat surface and it was

 concave.  so i think putting the extra hardener in the last mix made it set

to fast. hence the movment.

   had it been summer weather then no probs.

   next time ill get it right.

  dont forget  post your results. be lucky.

[TheCasualTraveler]

Thanks for that post and the interest blueyonder,

The pour went ok, I thought I put in enough that when I clamped down the lid it would fill the voids but it didn't quite cover all the coils. No matter, I popped it out after 2 hours and it was still warm and slightly soft so I could screw it on to the plywood backing that I mounted it to. It was slightly concave but since it was soft screwing it to the plywood flattened it out. The rotor fit nicely up to it with a nice even airgap. I wired it up and tested it and Ohhhh, the questions I have now! I've tried not to ask too many dumb questions and now that it's done I will put together a page and post it along with my trials and tribulations and the questions I have now. Stay tuned...

p.s. The old addage about the wind dying as soon as your wind generator is done, holds true.

[TheCasualTraveler]

BlueYonder, you can see the stator here,

http://thecasualtraveler.com/wind.htm

[elvin1949]

Read the label_ here you find baby powder made from corn starch or talc sitting side by side on the store shelf's

later

Elvin