What we did our first night at Chickasha. Good friend Bruce has now rebuilt two Holley Huff magnetos. The magneto patent application was submitted by Ed Huff with Henry Ford as assignee in mid-1905. This is the first CDI produced and first used on a production automobile (Model K). The mag was also optional equipment on the 1906 Thomas Flyer and 1907 Thomas 40.
It's a "hot" magneto:
Click on the link below to see the magneto firing:
WOW That's cool.
Nice demo. Thanks,
Rob,Is there any danger from a CDI that hot? Bud.
Bud, an electrical engineer reviewed the technical description of this magneto and said it could theoretically stop ones heart if shocked at the wrong time. I know the spark is significant, and I'm able to start on magneto only when the car is warm.
The link below shows the magneto working after Dean Yoder initially reworked it. The distance the spark jumps is only limited by the coil arcing internally when the contacts are spread too far apart:
Rob, wondered if you got my PM I sent a good bit ago about the fellow who was at the ford museum during the deaccession sales and may well have either helped or been in charge of them? I sent contact info.
I didn't get it. Maybe it went to my junk mail? My email is robheyen1(at sign) gmail.com.
Rob, I sent the information via email. Hope it is of some use. Bill
Thanks Bill. Got it, and sent an email back.
Electricity is funny stuff. My dad was an electrical and electronics engineer, so I grew up around a lot of such stuff.
Voltage is not the main danger in electricity. Current, upper limit available current is a greater concern.
Voltage in some cases is dangerous. Certain voltages have special effects on human physiology that can stop a heart, or freeze muscles so that one cannot let go of an electrical source. That is why people used to be taught how to knock another person off an electrical source using a board or other non conductive material. Grabbing a person held onto an electrical source can turn into two people muscle stuck onto the electrical source.
A little known danger (not a serious danger, but?) is that a (used to be) common six volt automobile battery, can actually kill a healthy adult. The circumstances have to be just wrong (or right?), but a six volt battery can kill. A common twelve volt automobile battery can only kill an adult with significant health issues. A common twelve volt automobile battery cannot likely kill a healthy adult.
The difference is in the amperage available.
And thank you Rob for showing us the Holley Huff magneto!
It is quite impressive, and historically significant.