Magneto questions

[Tnbshr]

Good day,
I have a 1947 John Deere D with an Edison Splitdorf mag on it.
The spark plug has a very small orange spark, curious if that is normal. My other question is i bought another rebuilt Edison Spitdorf the seller only info on it was "rebuilt tested HOT!" Does anyone know what that means? I should have asked the seller by that opportunity is gone now.

 

[caterpillar guy]

Spark is weak on the first mentioned mag, second would be referring to a better spark more like a blue spark.

 

[rustred]

hot means good like a blue spark with a good snap. orange spark not good. u can check the spark yourself, by hooking a wire and plug to it
in a vise. clean the points on the weak spark one and u might be in business.

 

[John T]

Its hard to describe in detail and words or accurately, but FWIW I agree at the same
distance if the spark is weak wimpy barely visible thats less energy than a bright
blue visible spark ......... The most common causes of a weak spark are the points but
remember also the faster the rotation the more energy a mag or generator etc produces
and with an impulse spring wind n trip assembly for a mags start up spark, a weak
wimpy spring yields a weak wimpy start up spark....

John T

 

[DPittman]

The magneto man I go to puts his rebuilds in the tester and if it doesnt snap a bright blue spark 5/16
you dont get it back till it does. Kevins Magneto Service in Manito Illinois. You can find him online