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Tinker

Guru

Joined: 07/11/2007
Location: Australia
Posts: 1904

Posted: 03:39pm 07 Nov 2007

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Hi everybody, my first post here, I just joined this forum.

After reading many posts and looking at lots of F&P wind generator projects I notice that hardly anybody bothers to provide some weathersealing to the stator assembly. My electrical background tells me that lots of exposed enammeled windings will suffer eventually from corrosion problems. So, what is the service life of an unprotected F&P stator working up there as a wind generator?

My project is not yet ready for testing, still waiting for the new rotor hub to build the recommended 7 phase set up for my first wind generator. Lots of interesting ideas to try are discussed here, these should provide me with hours of experimenting

.

To weather protect it I found a cheap squat 13l plastic bucket sold at Bunnings would neatly cover the F&P rotor/ stator and plastic bearing housing end. It would slide over the shaft with the buckets open end downwind at the rotor end, letting any hot air out while stopping rain getting in. I'll try that idea, its cheap - only $2.50 - not much to loose if its a problem.

My other project is a small, compact, axial flow windgenerator to be used on windy nights on a small sail boat while at anchor. It needs to be easily dismountable and has so far provided me with lots of mechanical challenges but the project is well on its way now.

Klaus

Klaus

Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5116

Posted: 09:26pm 07 Nov 2007

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Hi Klaus

I like to leave my motor exposed (

). Kind of looks cool. I always paint my stator with a couple of coats of varnish, make sure it soaks into the coils and laminations. The magnet hub should also be painted to protect from UV. I've had motors up there for a few years now and they seam to last ok once painted.

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ

Gill

Senior Member

Joined: 11/11/2006
Location: Australia
Posts: 669

Posted: 10:49am 08 Nov 2007

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G'day Klaus,
Welcome aboard.
Your standard 20l oil drum is also a good fit. Available at your local tip, mostly for free. And long enough to enclose two hubs when fitted to a standard shaft(one hub each end).

Best wishes for your projects in progress.

was working fine... til the smoke got out.
Cheers Gill _Cairns, FNQ

martinjsto

Senior Member

Joined: 09/10/2007
Location: Australia
Posts: 149

Posted: 04:23am 18 Nov 2007

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hi klaus
the varnish workes well i have used it with no problems, i found a plastic plant pot of suitable diameter with a hole in centre to fit shaft, fits nicely over the bearing hub. try using an old medium size webber lid , which fits over the rotor like a glove, these come together close fit but dont rub when rotating, lots of idears around, i use a sealant spray for leaks that sprays on thick dries quick and insulates and is somewhat fire retardent, you can also purchase fire retardent expanding foam.

free power for all
McAlinden WA

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