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Re: UK storage heaters

Discussion Board - 2 hours 42 min ago
Hi

I have taken several storage heaters apart for the heat resistance bricks. A lot of the elements are straight runs of nichrome wire running backwards and forwards, or from side to side in a small groove in the bricks. I found one that had three seal...

Re: Generator output what changed???

Discussion Board - 4 hours 34 min ago
Thanks for the follow up, nice to have the occasional success story.

Flux

Re: UK storage heaters

Discussion Board - 5 hours 45 min ago
Mab;
Here's a cute little diary of hat one person did back a few years ago.
http://www.fieldlines.com/index.php/topic,130307.msg848268.html#msg848268

Hope it helps!

Re: Generator output what changed???

Discussion Board - 10 hours 10 min ago
Thanks guys I finally got a chance to check the gen out, It was the bridge rectifier all is back to running fine.

    Chris

Re: Sourcing ceramic magnets for Piggot's 2F

Discussion Board - 14 hours 27 min ago
Quote from: dnix71 on December 16, 2014, 08:08:37 PMHas anyone tried using AlNiCo magnets with a smaller rare earth behind it to maintain the magnetism?
http://www.gitam.edu/eresource/Engg_Phys/semester_2/magnetic/mag...

Re: Sourcing ceramic magnets for Piggot's 2F

Discussion Board - Tue, 12/16/2014 - 21:08
I noticed that AlNiCo magnets are never mentioned for use here. They are physically the toughest, but easily demagnetize if handled incorrectly.

Has anyone tried using AlNiCo magnets with a smaller rare earth behind it to maintain the magnetism?

Re: Sourcing ceramic magnets for Piggot's 2F

Discussion Board - Tue, 12/16/2014 - 20:06
I found it's fairly easy (but slow going) to cut ceramic magnets using a wet tile saw with a diamond blade. Magnet4less.com has a sale on 4" x 6" x 1" ferrite magnets for $7 each. Cut the magnets into a wedge shape and you'll get much more magnet mater...

Re: UK storage heaters

Discussion Board - Tue, 12/16/2014 - 17:46
Aye, but not storage heater elements; and as storage heaters elements run dry and a lot hotter I doubt water heating ones could be substituted, alas.

Re: Venting sealed battery box, run fans continuous or?

Discussion Board - Tue, 12/16/2014 - 17:23
   All I was trying to point out is anytime the battery exhaust fan is off and another house exhaust fan is on, air could be drawn from the battery box and into your living space.
  Know all about them drafty houses. Don't need any combustion air for t...

Re: Venting sealed battery box, run fans continuous or?

Discussion Board - Tue, 12/16/2014 - 16:42
Corn stove uses outside air, only way to install them and it is not recommended to use inside air because it can cause burn problems. As leaky as this old house is I am not to worried about negative pressure either. If it seems to be an issue I can run...

Re: Venting sealed battery box, run fans continuous or?

Discussion Board - Tue, 12/16/2014 - 14:37
   Something to be aware of is if you have any exhaust fans and creating a negative pressure in side the house. I.E. bathroom or kitchen exhaust fans. Do you have have combustion air provided for your corn stove?

Re: UK storage heaters

Discussion Board - Tue, 12/16/2014 - 14:27
Most water heater elements are a loop of nichrome wire encased in some kind of high temp sand.

Low voltage elements could be made in a similar way if you can cut the loop off the end, spot weld the nichrome to the inside of the tube and then cap the t...

Re: UK storage heaters

Discussion Board - Tue, 12/16/2014 - 13:38
I do use storage heaters as dump loads - but either via the inverter or direct from the hydro (which is 120v and can run the elements at 1/4 power).

I have been thinking about making some 24v elements using some old toaster element wire - I haven't see...

Re: Venting sealed battery box, run fans continuous or?

Discussion Board - Tue, 12/16/2014 - 11:25
Ain't it sweet to be on your backup?!

Just wondering: Are you going to put your fan on the input or output of your box? Seems like if you are concerned about acid fumes that if you put the fan on the input it won't be exposed. Relay off the charger sou...

Re: Wind Blade Angle

Discussion Board - Tue, 12/16/2014 - 05:15
Here's another link you might find useful.  It has better description of the variables than Alton's.  It is part of a site by Ed Lenz:
http://www.windstuffnow.com/main/blade_design_help.htm[/u...

Re: Wind Blade Angle

Discussion Board - Tue, 12/16/2014 - 02:44
If you like the look, add them. I really don't think you will see any performance difference, the centre of the blades contribute little to the power. I cant see the wedges adding any strength.

Flux

Re: Sourcing ceramic magnets for Piggot's 2F

Discussion Board - Tue, 12/16/2014 - 02:38
Yes it will have a bit more flux with 2 x 2 x 1 magnets. In theory you could reduce turns a bit but far simpler to keep things as they are and increase the air gap to get the speed back up. Not easy to make winding changes without lots of experience.

A...

Re: Sourcing ceramic magnets for Piggot's 2F

Discussion Board - Tue, 12/16/2014 - 01:11
I don't think you will see enough of a flux difference to make any big changes needed, tweak air gap so it runs right and go
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