Plug caps

[dbeardslee]

I kept the little caps on my spark plugs and use the automotive plug caps. No problems so far, put about 400 miles in this season.

I'll have to pass that on to my brother. He bought a set of iridium plugs several years ago, and somehow he wound up with the kind that don't have the removable tips on the plugs. It would be a lot cheaper to put automotive caps on the wires than to buy new iridiums - assuming they're compatible plugs.

[donebysunday]

Hey Scott, Steve, even Capt. Zap,

Have any of you actually ran your bike and then your car next to it to see if you can perceive any RF in your radio?? I understand that the RF could possibly cause problems with sensitive automotive ignition electronics...but I wonder HOW CLOSE the bike would have to be for it to interfere??

Also...with the lower rpm's of our bikes....7500 rpm, 2 spark pulses per rpm due to wasted spark...so ~15,000 per MINUTE...that's only 250 hz! From what I remember low AUDIO frequencies are more omni-directional whereas hi frequencies are much more directional. Also remember that they travel farther easier that higher audio frequencies. I would think that RF is also Omni-directional....but don't know much about their transmission ability? I understand that AM frequencies are more susceptible to RF than FM. Who listens to AM anymore anyways....and for that matter FM is on it's way out also with the advent of SATELLITE RADIO, as well as iPads/phones/mp3 players.

SO...I'm not worried about the RF from my Non-resistor caps AND non-resistor plugs. This weekend, I'll see about firing up my bike next to my car and see if I can get any interference with any of the electronics.. it has Fm/Satellite/mp3 aux in capability.

T.C.

Don't do that it will screw up all the capacitors in your cars ign. and the universe will turn to dust !!!!!

[donebysunday]

Things to ponder:

An ignition pulse (impulse) contains equal amplitude of all frequencies, regardless of the frequency that the pulses occur.

Sound propagation is as you described....lows are omnidirectional, highs are more directional...lows travel farther, etc......but electromagnetic radiation travels differently.

The directionality of the radiation depends on the shape of the radiating device (antenna). For example, a dipole has a figure 8 polar pattern- it can send receive maximum amplitude perpendicular to the wires, but almost nothing parallel to the wires.

The car electronics have specifications for EMC (electromagnetic compatibility). The relevant spec would be called "radiated immunity". Aside from the radio, it would be surprising if the pulses would interfere with anything else.

AM is indeed much more susceptible to interference than FM.

Now, if we hadn't been smoking dope instead paying attention to Laplace Transforms and Fourier Series, we might know something about this ignition system discussion.

Right arm and farm out dude

[skids]

Don't do that it will screw up all the capacitors in your cars ign. and the universe will turn to dust !!!!!

Tesla would have done it to see if he could power-up his house!

[donebysunday]

Tesla would have done it to see if he could power-up his house!

But what are your findings concerning powering of a house in this manner ?

[3Phase]

Aflac!

But what are your findings concerning powering of a house in this manner ?

I've found that playing with voltage and current of that magnitude may cause sudden power loss in a house when the electric company shuts off the power for non-payment while you're sitting in a hospital learning how to sip through a straw and spoon feed yourself with all the bandages.

[donebysunday]

I've found that playing with voltage and current of that magnitude may cause sudden power loss in a house when the electric company shuts off the power for non-payment while you're sitting in a hospital learning how to sip through a straw and spoon feed yourself with all the bandages.

Although it might be possible to get a spoon through the bandages I doubt you could get a spoon past those fused together lips, Eh ? A rubber hose up the nose or in the ear may work, or pour the liquid sustenance into the holes that the exiting lightening bolts created, any way it will do the same good !