Build a Magneto Magnetizer, Gingery, David J, ISBN Build a Magneto Magnetizer Many people collect and restore old engines and in the process discover that the old iron magnets in the magneto. Dave will show you how a magneto works, how to test one, how the magnetizer works and will show you in detail how to build one. He’ll give you all the tricks on .

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The design The main criteria for any charger design is core area, number of wire turns, and amount of current flowing through the buildd. Hi Greg, You can find a more up-to-date article that uses modern equipment with pictures of the design and construction at http: There was a problem filtering reviews right magnwto.

If a lathe is not available, coils can be wound by attaching a crank with bolts threaded into each end of the core. Charging a Wico EK magneto.

Connect the leads to a volt automotive battery observing polarity and close the switch. No current will be indicated on the meter if the jumper leads have been improperly connected to the battery. The magnets must never be left off the magneto even temporarily, without placing a steel bar across their poles to serve as a keeper. Amazon Renewed Refurbished products with a warranty.

The cores of the electromagnet are made of soft bar steel one inch in diameter and three inches long.

Do not use tool magnetizsr, cast iron or other high carbon steels, they have too much magnetic loss. As everyone knows, opposite magnetic poles attract while like poles repel.

How to Build a Magneto Magnetizer: David J. Gingery: : Books

After hardening, the fiberglass and resin were sanded smooth and painted. It is not necessary to remove the covers or put shims under the armature of this magneto when charging.


,agnetizer washer for each coil should be prepared with brass terminal screws as shown. Learn more click to open popover Customers who bought this item also bought Page 1 of 1 Start over Page 1 of 1 This shopping feature will continue to load items.

Tighten a nut and lock washer over each lug. In order to navigate magnetkzer of this carousel please use your heading shortcut key to navigate to the next or previous heading.

The bolts may be run through wood supports which act as bearings and support the coil during the winding.

Build a Magneto Magnetizer / Imperfect

Guide the wire through the notch on the insulating washer, scrape the insulation off and solder it to a kagneto at the terminal marked ‘2’. These procedures were used in the old days because many chargers were inadequate and magnetic theory was not well understood. The Square Deal Subscription Program is designed as a paperless transaction with automatic renewals at a preferred low rate.

Two people are required, one to operate the lathe clutch, while the second layers wire onto the core with gloved hands. Dave maneto show you how a magneto works, how to test one, how the magnetizer works and will show you in detail how to build one. Great book on building a magnetizer. A spool may be formed by placing fiber or cardboard washers around each end of the magnet cores and then wrapping the magnet cores themselves with several layers of electricians tape.

It’s important to state that increasing charger size beyond the point where magnet saturation occurs does not improve magneto performance there’s no harm either. Then lay it on its side with its poles away from you and extending just beyond the far edges of the electromagnet poles.


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One thing to remember you need to wind both coils in the same directions in order for it to work properly. Show All Member Profiles.

The wheels were replaced with old lawn mower wheels which are stronger. Wiring connections for coil mahnetizer. There’s a problem loading this menu right now. Without a healthy spark, the engine won’t run. Kindle Edition Verified Purchase. Ammeter Ubild use of an ammeter, although optional, is useful to monitor the current through the charger. With the price of copper wire, it is not cheap.

The coils are now bolted to the base. Great for engine restorers, science experimenters, or even as a science fair project. If you work on magnetos and want to do it right you need to be able to re-magnetize the rotors.

Mount the core with terminal end facing the lathe tailstock and run the lathe in reverse to make winding easy to view. Forums 34 Topics 69, PostsMembers 10, The ammeter is connected in series with the switch and mounted to the wood base attached to the hand truck. Try to purchase two 20 pound rolls rather than one 40 pound roll. In other words, the charged magnet comes off the charger with its south pole originating from the north pole of the charger.

Write a customer review. Sumner magneto from Watkins engine ready for charging. Support Your 1 BritBike Forum! If you have a particular interest in magnets, you can build this simple device to create new magnets and recharge weak ones.