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angus
Newbie

Joined: 08/12/2009
Location: Australia
Posts: 7

Posted: 01:33pm 27 Jan 2010

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G/day Ozz (and all) - Thanks for the post , your generosity (and that of others)is humbling. TY

I reckon Gizzmo should start a poll -- " Tules for Australian (chainsaw champion) of the year"

Ps any links on to how to produce/fabricate the lams for the AWP stator - I'm determined to build one- got the gear need the know-how

Regards.

Angus.. (The older I get, the better I was).

oztules

Guru

Joined: 26/07/2007
Location: Australia
Posts: 1686

Posted: 01:33am 31 Jan 2010

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Angus,
Your time will be better spent making the axial flux version. The radials are difficult builds, the axials are simple.

There is iron drag to consider with radial steel designs, and although I like them quite a bit, they are less efficient than the axials.

They do have some good characteristics though. The current limiting can be useful if your in a high wind area, and can't get the furling right I guess.... providing you use decent shafts and blades you will live through it.

If your still keen, then :
In this country, we don't build anything any more, so just getting the silicon steel sheets will be problematic I suspect. If you can find it , then CNC cutting (water jet would be nice) to cut the plates out. This will cost a fortune... but. AWP has 90 slots about 1" deep. Keep the top tooth of the slot small to keep cogging down to the least before you skew it.......no the more I look at this the more I think you should drop this AWP stator idea.....

Perhaps use the design Flux used. Find a large motor that has round stator steel (some use squarish designs) and press them out and make it like Flux did. Even with small magnets he easily hit 1000w@400 rpm or so from memory. If you can find a bigger stator to use, it will be easy to get big figures.

You may need to build your own drum like I did, unless you can roll 3/16 steel plate up into a perfect tube. If not perhaps find large 1/4" think pipe, and use that, but the flat steel approach is still available to use if you just can't find a suitable drum to use for the stator you find.

Best of luck with it.... and post the results and hardships as well if you do it.

............oztules

Village idiot...or... just another hack out of his depth

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