Re: Electronic Ignition? What do you think?

Posted by John T on November 22, 2005 at 10:31:50 from (66.244.90.98):

In Reply to: Electronic Ignition? What do you think? posted by Farmallkid From Ont, on November 22, 2005 at 08:19:35:

Kid, Once you overcome the initial cost, an electronic current switch is far superior to the old fashioned mechanical points current switching and energy absorbing protective condensor for numerous reasons. For one, soon as you use the points they begin to deteriorate from the constant arcing across their surfaces which burns, carbons and pits the surfaces and increases the resistance across what should ideally be near a zero ohm circuit path. Energy wasted across a resistive connection would be better spent discharged across the spark plug gap to ignite the fuel. Also, you have the wear factor on the cam follower causing their gap to change. Also, they are not that good of a switch as they bounce n ring. Another factor is possible longer plug life if a performance coil and a wider plug gap can reduce fouling deposits from accumulating so badly.

To the contrary, an electronic switch provides a faster and more positive switching for the coils current as opposed to the bouncing ringing points. Better switching improves coil efficiency as far as its mutual inductive coupling transformer action is concerned. The electronic switch does not deteriorate due to carbon or pitting or burning either.

Another advantage of the elec switch is if you couple it with a high energy high voltage coil which allows you to get more bang for the buck and utilize the full potential an elec. switch can provide. Theres still advantages even with the stock coil due to the faster more positive switching, but couple it with a high energy high voltage coil and you have the ability to discharge more energy across a potentially wider plug gap to ignite the fuel.

A disadvantage may be that with points one may be able to file or dress the points in the field to get back to the barn, but if an elec. switch fails your dead lol.

I guess the elec switch costs about 4 times a set of points n condensor BUTTTTTTTT it should last wayyyyyyyy longer then several sets of points and its NOT deterioratign the moment you use it.

Be sure to get a switch that matches your polarity and be sure the switch is matched n suited for the coil you purchase and I run a lil wider plug gap on an elec ignition.

John T, retired electrical engineer and believer in an elec ignition.

Follow Ups:

• Re: Electronic Ignition? What do you think? Jrry 07:05:21 11/23/05 (0)

Post a Followup Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]