I want to make a big one that will produce a strong charge. The standard recommendation is that a charged magnet should hold a two pound weight, but some folks tell me they get considerably more, like four or five pounds. I won't try to match Ron the Coil Man, who is reputed to have a monster charger the size of a Patton tank, but I do want it big and strong enough to get me over five pounds. So here are the questions.
1 I'm guessing that the magnetism increases with the number of turns in the coil. Am I guessing correctly?
2 Does wire size matter? If so, what gauge would be best?
If anybody has additional information I didn't think to ask about, do tell.
Steve: Search AMP TURNS on the web. That should help you. Dan
A fellow by the name of David Gingerly or similar to that, wrote a detailed booklet years ago on building your own - a quite nifty magnet charger, at that - I built one & use it regularly - mind you it's not as big a monster as Ron's but it's been servicing me & my customers for years.
I built mine based on the David Gingery plans with No. 18 magnet wire which I had access to.
3,361 turns total in the two coils, pulls 6.9 amps at 120 volts rectified to DC as per the plans.
23,191 amp-turns according to my math. I made a point to insulate everything better than in Gingery's design due to the 120 volts.
I measure the magnet's pull at the location of the clamping plate since it seems to be a more consistent surface from magnet to magnet than at the very tips.
My method of measuring magnetic pull clearly gives different results than picking up an object with the tips of the magnet due to the leverage in the arm, but it consistently showed about a 3-fold increase in pull after charging, and the car ran well on mag before. Maybe it'll throw lightning bolts now.
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