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Forum Index : Electronics : Cop(per) out. Aluminium in, new FP stator

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Wind Hunter
Newbie

Joined: 21/11/2008
Location: Australia
Posts: 2
Posted: 08:20am 21 Nov 2008
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Hi all,

Newbie here. I have been studying this fantastic site for a few months now. My initial intention is to make a Lenz2 type HAWT (out of stainless steel). Ribs have been laser cut and foil to be rolled next week.

Today I finally took possession of my first F&P 36 pole motor. ($0.00)

I am on a roll, or so I thought!

I have been reliably informed that this particular new 36 pole F&P stator no longer uses copper wire, aluminium is used instead, WTF. This will probably not be a worry for me as it would appear from various postings on this site that the factory wiring is OK for a slow windmill. It will be interesting to find out what additional losses are associated with Al vs Cu.

The problem will arise if one was interested in doing a re-wire. Aluminium is none too easy to solder! .

I may have to scrap the stator and use the 48 magnet hub in a cogless re-wire job, or completely re-wire the stator.

I shall post pictures of my SS Lenz2 as it progresses.

P.S. My 'reliable source' is the Sydney Service Manager of F&P.


Hunter Valley NSW.
Life is too short to drink cheap wine .
 
brucedownunder2
Guru

Joined: 14/09/2005
Location: Australia
Posts: 1548
Posted: 08:26pm 21 Nov 2008
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Interesting,, they built the early small motors with Al windings(gentle Annie,I think they got as a nickname).. I have a couple and years ago re-configured the windings ,but up in the air ,they are too coggy..
The wire connections were almost impossible,F&P used sealed crimps.. to copper tails.

keep us posted with a pic or two,please

Bruce
Bushboy
 
Wind Hunter
Newbie

Joined: 21/11/2008
Location: Australia
Posts: 2
Posted: 09:14pm 21 Nov 2008
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Lesson 1 - Never trust management.

My curiosity got the better of me this morning. Pulled the bugger apart, scraped away the varnish and lo and behold, copper wire.
Project back on track.

Thanks for the bit of history Bruce!

Tony
Hunter Valley NSW.
Life is too short to drink cheap wine .
 
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