So I purchased several of the PBR hot A-4893 pop bumper coils to enhance the pop bumper performance in my Slick Chick. I'd like to get a Slick and/or Chick advance off the pop bumpers to the upper center advance target once in a while as I expect this was how the game played when new. The way my game was performing this was a once in 15-20 game event.
I installed three of the hot coils last night - the top three - L & I & C. Boy are they zippy now. They are hotter than new DC operating pop bumpers. It's great if you want overkill but even this is not how these were intended to perform.
I measured resistance and the original wavered between 2.0-2.1 ohms. The new one only pulls 0.7 ohms. This strikes me as too drastic a change. Before I purchased the hot coils I considered taking the time to remove some of the windings off a few original coils. With what I have now I need to do something different.
So what is the math in all of this? If the 2.0 ohms is getting me 75% of the performance I want but the 0.7 ohms is getting me 150% of the performance I want, does that mean I interpolate the ohms reading I want out of the coil, as a target resistance reading, to get closer to the performance I want?
By the way, the coils appear to have similar weight although the hot coil has notably heavier wire for the winding over the original coil.
At the very least I have found a way to bring the performance of the game into where I think it should be. I just need to play with the windings a bit.
Also, I suspect these hot coils may be just what I need on my Outer Space where the pop bumper action is anemic at best while the rest of the game performs well. We'll see when I get them installed there.