The left ramp shot is not a gimme. Some games, the ball goes up the ramp several times for me, while other games, I can never make it once. Usually the shot is done while the ball is in motion. It has a very small sweet spot, but when you hit it correctly, the ball easily makes it up smoothly.

Often, a failed shot can go half way up the ramp and back to the upper flipper, which can be immediately hit back on the fly, and sail quickly up and over that ramp.

I think it's a fun shot, and it makes the combo insert one of the more rewarding segments to complete.

You, and every other owner of SG.

Sounds like a trough switch.

Never happens in 3 Ball is because the machine probably thinks you have 1 ball in play (even though you have 2) after one drains.

When you have two, and drain one, it thinks you have zero.

A trough switch is probably indicating a ball is there when it's not.

Tip 2:

If you really have to remove a post with loc-tite, use a soldering iron to heat the metal.

It will melt the glue making it easy to remove without breaking it.

Part numbers are listed in this thread, although apparently Pinball Resource has a cheap upgrade that supposedly makes the flippers feel more like B/W. This is stated in post #10.

https://pinside.com/pinball/forum/topic/converting-got-sys3-flippers-to-bw#post-2109633

Did you read either my post or the linked thread?

I said post #10 mentions to simply change the coil stop, exactly the same as you are saying.

But it also provided the answer to the specific question about coll part numbers. Which is why I copied it.

However, I didn't know it just was the same coil stop as on Sys 1 games, so that is good info.

When I searched for Gottlieb System 1 coil stops on Pinball Resource page, this is not the correct number.

Steve Young lists the Sys 1 coil stops as A-18265. He provides a substitute coil stop listed as A18702.

Where do you see the Sys 1 coil stops listed as A-17908?

I decided to try out the System 1 coil stop A-17908.

I was able to attach it without drilling or any other physical modification at all. That part was easy.

I removed the original coil stop held by two screws each. Then removed 2 of the bottom screws holding the assembly base plate, (still held by 3 top screws and one bottom screw.) I attached the new coil stop into the side and center screw holes so that the metal stop lined up perfectly. The flipper now has reduced movement, although I did have to adjust the resting position of the flipper to a lower level afterwards.

You can no longer automatically catch a rolling ball by holding up the flipper. But the problem now is that the lower left flipper doesn't have the strength of the full movement to make the upper right ramp. (I did not change the upper flipper coil stop.) I am going to rebuild the lower left flipper to see if that helps.

The first pic shows the original coil stop with the pencil pointing at the resting impact point. The second pic shows the sys 1 coil stop at the resting position, where you can see the protruding metal stub that shortens the movement.

2019-08-08 15.18.23 (resized).jpg

2019-08-08 15.19.02 (resized).jpg

duplicate

Gotcha. Thanks for breaking it to me.

The flipper movement was reduced appropriately, but I think it reduced the plunger movement too much causing the weak flipper. I'll drill and swap it.