(Topic ID: 248315)

Gottlieb Solar City player unit cam stackup question

By gigawatt

2 years ago

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  • 4 posts
  • 4 Pinsiders participating
  • Latest reply 2 years ago by rolf_martin_062
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0Jumping-Jack-from-Top-Score (resized).jpg
4A3BCF74-458B-4D27-8C2D-F88AED9A8C2B (resized).jpeg
Royal Flush Player Unit cams (resized).jpg

#1 2 years ago

What is the proper stack up for the cam wheels in the player unit on a Gottlieb 2-Player Solar City (and probably a lot of similar 2-player machines)? I am working on a 1977 Solar City game where the cogs on the 3rd and 4th wheels (the red ones which control the score runout at machine reset) are positioned between ball 4 and ball 5 on the first two cam wheels. As a result, during a 5-ball game, when the machine goes from ball 4 to ball 5, the scores get messed up because of the attempted runout and the player unit does not advance all the way to the ball 5 position. If I rotate these cam wheels 180 degrees, it places the runout cogs between balls 1 and 2 and the same problem occurs there.

There is another set of holes that will allow the 3rd and 4th wheels to be in a different rotational position relative to the first two wheels. Using these holes places the runout cogs somewhere in the middle of ball play (I think somewhere in the ball 2 to ball 3 position), and the 180 degree position places the last runout cog at the zero position, exactly lined up with the player 1, ball 1 cog on the first wheel. I have not tried placing the wheels in this position yet, but I am thinking this may prevent proper runout of the player 2 scores at game reset.

So I'm looking for some way of knowing what the intended position of these two cam wheels is as I am not sure that this unit was disassembled and then re-assembled incorrectly by a prior owner.

#2 2 years ago
Quoted from gigawatt:

What is the proper stack up for the cam wheels in the player unit on a Gottlieb 2-Player Solar City (and probably a lot of similar 2-player machines)?

The game manual (available from Pinball Resource and others) will probably have a diagram showing the relative position of the Player Unit cams like this one for Royal Flush:
Royal Flush Player Unit cams (resized).jpg

#3 2 years ago

Here is the one from Solar City manual. Good luck fixing your game.

4A3BCF74-458B-4D27-8C2D-F88AED9A8C2B (resized).jpeg
#4 2 years ago

Hi gigawatt +
jeffc shows the "generic means good for all" Gottlieb 2-Player-Pin Player-Unit. I show from "Top Score" the gears mirrowed --- means it is like we stand behind the Backbox and look towards the player - look along the axis, see first the steel ratched - and on the cams --- the Player-Unit is in Home-Position means ready for Player-1 to play ball-1. My JPG is an old one --- I already showed it here https://pinside.com/pinball/forum/topic/em-tech-help-jumping-jack#post-4691965 --- quite a detailled discusson on Gottlieb-2-Player-Player-Units. Greetings Rolf
0Jumping-Jack-from-Top-Score (resized).jpg

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