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Author Topic: bally 929-1 restoration  (Read 8135 times)

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Offline Peter321

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Re: bally 929-1 restoration
« Reply #80 on: October 21, 2022, 10:01:35 AM »
Update after holiday and other project.
In credit mode the pawl/rachet combination on hopper did not work, so rachet moves 2 steps and not 1 at the time meaning wrong counting. All wins were counted only half on register.
After long fiddling with pawl, springs, coilstops, coils it looked like the stroke down of the plunger in the counting coil was little too long so adjustments were not possible. I placed very thin washer on coilstop and stroke of plunger is now somewhat shorter. This seems to work for all counting except for win 20, 200 and 250.
For 1 coinplay, win 20 gives 19, win 200 gives 150, win 250 gives 200; all other 1 coins wins are ok
For multiple coins win 20:  2 coin win 40 gives 38, 3 coin win 60 gives 57, 4 coin win 80 gives 76, 5 coin win 100 gives 95 and 6 coin win 120 gives 114.
Sames is valid for win 200 and 250
Any idea what to check next?

Offline Peter321

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Re: bally 929-1 restoration
« Reply #81 on: October 23, 2022, 05:21:44 AM »
small update: due to all trials contact vinger for 20 payout was misalligned and did not finalise the whole track, adjusted  contact so now counting 20 in stead of 19. Working now on the 200 and 250 payout, which should be a similar adjustment.

Offline wolftalk

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Re: bally 929-1 restoration
« Reply #82 on: October 25, 2022, 03:09:14 PM »
the plunger and coil stop are both wear items and eventually need replacing.  The outer edge may measure fine, but the stop is usually concave so the plunger end goes into it a bit.

you can try swapping the step-up plunger and stop with another one on a unit in the top that doesn't get as much use.

the link arm the plunger operates is a longer section that pivots on a post and the pawl section that pushes the ratchet.  If the post is worn, the hole is worn, or especially the riveted joint connecting the two pieces is worn, then you can get more pawl movement than you should.

grab the pawl section and make sure it can't move without the link arm moving also (make sure the rivetted joint is tight fitting).  If the joint is sloppy, then the force of the coil yanking the link arm can pull the pawl further left from the ratchet.  If you manually step, you won't see the problem.

Offline Peter321

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Re: bally 929-1 restoration
« Reply #83 on: October 26, 2022, 07:11:33 AM »
I have checked the plungers in the top units and unfortunately they are all smaller than the one in the set up coil, so it will not work. I do not have much comparison, but it looks like the points you mention are not worn as I compare them with the similar points in the top cabinet counters.
I have adjusted wipers for 200 and 250 win and now counting stops at minus 19; looks like reset pawl is at higher values “stuck” to the rachet; will try to bending “upward stop” a little so pawl gets more space.

Can you tell me what max payout is in payout mode and how to set this?



Offline wolftalk

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Re: bally 929-1 restoration
« Reply #84 on: October 26, 2022, 11:48:25 AM »
the reset pawl should be on the ratchet teeth unless the unit is reset (both pawls are lifted off the ratchet at reset).

the reset pawl prevents the ratchet from turning counterclockwise much when the step-up plunger pulls in.

if you bend the pawl to allow a little more counter-clockwise movement, that will reduce the chance of the step-up pawl grabbing two teeth.  When the step-up plunger is all the way in, the step-up pawl edge should be around halfway towards the edge of the second tooth.

the game should be able to pay 250, so the payout counter wipers need to be able to spin around 2.5 times.  The outboard wipers should leave their traces somewhere around 15 steps before the end of payout and it doesn't need to be exact (it can't be ... the outboard wipers have too much slop). 

if the payout stops when an outboard wiper leaves the trace, you have a problem with the main wiper connection to the C.O. (carry-over) trace or a C.O. trace getting powered issue.  First step is clean the C.O. trace surface ... especially the area around 12:00 - 2:00.


Offline Peter321

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Re: bally 929-1 restoration
« Reply #85 on: November 09, 2022, 02:05:51 AM »
Finally credit mode is working. Changed set up arm with less space between moving parts; adjusted torsionspring so that maximum rotation ratchet is just possible. Gives enough pressure on ratchet to reset after just 2 steps; starting the other way round to ensure reset after 2 steps gave less pressure on ratchet and did not work out.
Adjusted pivot arm upwards.

Thanks Wolftalk for your patience and help!

Next step is to make coin payout working with correct coinsize and “coin inlet”

 

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