Let's put this misdirection attempt to rest once and for all. A glow plug requires low voltage to heat. (Usually between a few volts to 6 volts.) A glow plug does not require a tall ceramic insulatior. A glow plug has a long elongated cylinderical tube that contains the heating element inside. The pictures Terry posted from Amazon are glow plugs.
A spark plug requires a tall insulator to prevent volatage leakage since it is fired using high voltages. A spark plug will have a long threaded part (f it is long reach), and a small gap at the end. The picture in DGT document is a spark plug. Any mechanic Joe blow will tell you that. Notice the tall ceramic insulator. I wonder what motivation people have in spreading this misdirection? Unbelievable how people can lie to your face nowadays and keep it cool. Unbelievable. BTW, a spark plug fired at 300 hz (18,000 RPM) will draw less than 100 watts. COP is not an issue if sparks are used. Jojo ----- Original Message ----- From: Alain Sepeda To: vortex-l@eskimo.com Sent: Sunday, July 15, 2012 10:59 PM Subject: Re: [Vo]:Harping on the Right Things! no spark gap on the photo, seems right. whether a glow or spark plug is a very important detail if a spark plug is needed, there is a needed quantity of energy that have to be "electric", and this limit the COP. if only heat is used, that mean that the reactor itself, or another reactor, can provide the heat, so the COP can have no limit else the insulation and controllability 2012/7/15 Terry Blanton <hohlr...@gmail.com> Doesn't look like glow plugs: http://www.amazon.com/s?ie=UTF8&rh=n%3A15729261&page=1