Rebuilding the flippers on my Pinbot rescue. It's been playing fine, but I like to have the original travel without slop and worn coil stops, etc., and had every reason to think the original parts were still there.

To my surprise it turns out that the coils were different as a result of work done before I got it.

One is a 23-600. The other is a 30-750. Both are OEM Williams blue-label coils.

So in theory, the larger wire with fewer windings (23-600), should have been stronger. But it didn't seem to be noticeably so to me. Apparent response and speed was the same. Can't say I noticed any playability issues. So does it just happen that the smaller wire with more windings (30-750) average out pretty close to identical, performance wise?

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Complicating my situation somewhat: the game manual calls for 23-600. But the one in my game overheated at some point and trying to replace the sleeve was very difficult now the new plungers do not fit or operate nicely. But the 30-750 in the game is just fine, AND I happen to have a spare 30-750 as well... although it's a Pincoil "Yellow Label" and supposedly yellow means "weak". So I could have a matched pair by spec, but not by color or conventional wisdom, nor what the manual calls for. Sigh.

At any rate, how much would this affect the game?

See, this is what I find fascinating. On paper, you'd expect the 28V coil to be far less powerful and responsive. But it's not! All shots are makeable, and response time is fairly consistent (aside from the slop of worn links) and equal to the stronger 50V coil. I've been playing the game for almost 6 weeks now and there's been no hint that one coil is almost twice as powerful as the other by rating.

Which begs the question as to what's really going on here?

I've even considered the possibility that maybe a coil was re-labeled incorrectly, but that seems to be unlikely.

Indeed, and yet it's the *correct* coil that melted down to an extent, and is giving me trouble. Go figure! Seems everything I had to fix in this game was sort of the inverse of expectation.