Bantamag re magnetise.
Posted: Sat Sep 28, 2013 7:04 am
by simon
Not relevant to anyone but perhaps the Flying Flea fraternity but I've spent the day making a dummy armature to wind a coil on and so I can use a capacitor discharge remagnitiser. It's for a Berini M13 Cyclemotor but that's not important right now.
http://www.flickr.com/photos/77012441@N08/9977178343/
Bantamag re magnetise.
Posted: Sat Sep 28, 2013 8:55 am
by Gwilly
I do like this inventive engineering spirit of yours Simon... i Haven't got the foggiest idea what your on about but i admire the workmanship...
Following the footsteps of Tesla, et al. Go for it ..... gwilly
Bantamag re magnetise.
Posted: Sat Sep 28, 2013 9:42 pm
by simon
Ah ha, well perhaps I can explain. There are two ways to re-magnetise. You can clamp the chunk of metal you want to magnetise to a very powerful magnet usually a big electromagnet and wait. Or you can use a little electromagnet with a big pulse of power. The first method is a bit scary as the electromagnetic radiation produced by a big magnet isn't good for one. The second method is far more isolated and more effective but does require a purpose built tool. The chunk of steel I pictured will have around three hundred turns of copper wire wrapped around it so that when a charge is run through it it will become a temporary magnet. The source of the power is a very large capacitor charged up to around four hundred volts. When the button is pushed a substantial jolt of magnetism carefully directed re charges the magnets in the flywheel making big blue crackles where once there were anaemic unreliable sparks. More pictures to follow.