Could try this. Corvette America is a good vendor and one restorer tells me it's tougher than most paint:

https://www.topflightautomotive.com/products/corvette-america-1958-2004-chevrolet-corvette-dye/

I'm sure other automotive parts sites have similar stuff.

My Hot Hand SN 8381 has the slotted receiver too.

Wanted to find these for years, finally had the time. Didn't see it anywhere else so: The 500 point Ace is SW 22, the endless scoring Ace is SW 38.

No, I like the difficulty.

I think the idea someone had of building the second card immediately after completing the first (on the same ball) is a good one. Looking to go through the program in pinmame and on paper and understand it. Got started four years ago (with Bally 6M$M) but then got too busy and stopped. Did some 6800 programming years (actually decades) ago.

But vandals will unscrew them and remove the rails and the glass and...! Okay, I need to stop thinking like a paranoid operator. I hate every minute of dealing with those damn twist nails.

My Hot Hand's slingshot fiber link is broken. I thought a Bally plunger/link (left part in the pic) would work but it's too short and the hole in the fiber link is too small (looks like 3/16" diameter on Bally, 1/4" on Stern). Who if anyone has this part? Prefer the plunger and link as one unit but in a pinch I'll replace the roll pin and link.

20200907_104320 (resized).jpg

Will talk to Steve Young tomorrow, thanks.

All five of the stationary targets on my Hot Hand have switch stacks that look like this. Is this correct? I would think the switch blades should be arranged so that the big round contacts come together.

20200920_154028 (resized).jpg

The pop contacts on this pin are that way too. I may turn them around the right way. Just got done rebuilding the pops and I want the best action possible.

I've considered this. If there's a 26 gauge 1000 turn coil already made, I'd rather just do a coil swap. Or get some new AN-26-1200s and mod them. The Stern originals look so nice with their clean factory wrappers.

Yeah I've had some SS Ballys since I was a teenager and I always took it as gospel that the gold-plated contacts on SS games were all that stood between smooth pinball action and a world of random intermittent junk. I couldn't wait to get my first good job, so that I could clean those contacts with MY VERY OWN business card.

The first time I called Steve Young for parts for my SS Bally Black Jack, I ordered a flex-stone. "YOU DON'T USE THAT ON THAT GAME!", he yelled. "I know, I know, it's for the FLIPPERS!", I pleaded back. After that we got along fine.

I don't know how much current those driver transistors can handle before they pop. Maybe someone will chime in on that.

I have noticed on my Centaur that the coil that shoots balls out of the flap to the playfield is an AO-25-950, and it's switched through a relay instead of being directly connected to the Darlington transistor.

The ones position being zero all the time is a problem for the 7-digit Nixie displays I made. I've had them in Centaur for the last three years. The last digit always being zero has caused the ones tube on three of the four displays to get dim and finally go out. I think this is "cathode poisoning". Lately I've remembered to run the game in digit test for a few hours every month, to light all the digits on all tubes and save the last remaining one. If they were socketed I could rotate them but they're soldered in.

It would help.

My ideal would be a divide by 10 version that fully uses all 7 digits. Someone might make such a version for the Weebly with its expanded program space, or with the new open source arduino platform. (Shameless plug for my adapter board kit.)

One weakness in Centaur IMO is the fact that multiball is just more balls; making the scoring multiply with multiball (as I think Black Knight does) would be an incentive, and with /10 the five ball multiball could have 10x scoring without making the game easy to roll.

As it is now, Centaur is too easy unless you use the Oliver K "Home ROMS".

Okay back to classic Sterns, sorry.