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MAGNET

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BOB

08-14-1999 17:58:15

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IS THERE A WAY TO INCREASE THE STRENGTH OF THE MAGNET ON AN F-4 MAGNETO

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Ed -How do I post a sketch?

08-14-1999 21:26:05

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Re: MAGNET in reply to BOB, 08-14-1999 17:58:15

I made a sketch of how to recharge the magnet but I don't know how to post it. I have it scanned but don't know how to attach it to my reply.

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Here's the Sketch

08-16-1999 06:27:20

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Re: Re: MAGNET in reply to Ed -How do I post a sketch?, 08-14-1999 21:26:05

Sorry for the delay. Had to scrounge up a copy of MSIE 4.0, seeing as the board doesn't seem to like my old copy of Netscape anymore ;-)

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MORE DETAILS PLEASE!!

08-16-1999 09:37:18

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Re: Re: Re: MAGNET in reply to Here's the Sketch, 08-16-1999 06:27:20

I see the sketch but it leaves many details to the imagination.....what is the polarity of the magnet? It doesnt seem to be marked in my sketch and it fails to explain how much current, or for how long to apply current. More Details Please!

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08-16-1999 17:04:17

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Re: Re: Re: Re: MAGNET in reply to MORE DETAILS PLEASE!!, 08-16-1999 09:37:18

I had the instructions on the sketch but they didn't show up so here it is-
The trade mark side of the magnet is at the top of the sketch
I use #14 solid core wire
Make about 30 turns on each leg
Observe winding direction (it will affect polarity)
Place keeper bar across the ends of the magnet (I use a bar of cast iron but maybe a piece of steel will work)
Touch wire ends to a 6 or 12 volt battery for 1 to 2 seconds only (I have used both with good results- it may be a good idea to run a lead away from the battery to reduce the chance of sparks near the battery)
Slide the keeper off the ends of the magnet at the same time
Double check the polarity of the magnet- the trademark side should attract the needle od a compass.
If you have more than one magnet to do you might want to make a setup that you can slide the magnet in and out of.I made one of 1/8 plywood. Make two small boxes that the magnet legs can just slide into and wind the wire around the boxes.instead of just winding around the magnet.
I did a little test with a magnet that had about 9 pounds pull and found afterwards had well over 20 pounds.
Good luck.

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Redfan

08-17-1999 02:03:04

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Re: Re: Re: Re: Re: MAGNET in reply to Ed, 08-16-1999 17:04:17

Ed, I hope you mind, but I printed off a copy of the drawing and details too. Probably come in handy someday. Thanks.Redfan.

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Paul Fox

08-15-1999 04:19:41

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Re: Re: MAGNET in reply to Ed -How do I post a sketch?, 08-14-1999 21:26:05

Ed, email it to me at the above address, I will post it. You need to have a web site to put it on, and then link to it from here.

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