The shaft of the motor is also the perfect length. Since it is not powered at the full 12VDC, it runs slower than the rated 3 RPM at about 1.5 RPM, which looks good and matches the OEM motor speed closely. This 3 RPM motor, which is spec'd to run on DC voltages from 3 to 12V, is driven by 6VDC in the game. The motor will, of course, turn 1/3 slower than the 3 RPM motor. The mounting holes on the motor face are slightly wider apart, allowing two additional screws with washers to "clamp" the motor to the mounting bracket without elongating holes. The 638154 2 RPM Servo City motor - $34.99 may also be used. The following item is no longer available, and the suggested screws are no longer needed.ģ472H 6mm (the motor shaft size) bore aluminum hub with 5-40 tapped mount holesĩ1771A125 5-40 Flat Head Phillips Machine Screws, 5/16" long - $0.23 each, minimum quantity 4 (for mounting the spinning disk to the new hub) are used to mount the hub adapter to the hub. Quantity 1pk - 632110 6-32 x 3/8" (estimated length needed) long socket head screws - $2.09 pk.Quantity 1 - 545456 aluminum hub adapter - $3.99.Extra screws (as listed below) will be needed to mount the hub adapter to the hub. It works very well with this application. are used for mounting the new motor to the original mounting bracket.)Īn alternative to drilling and tapping the above hub is use this hub adapter. Quantity 1pk - 632286 3mm x 6mm pan head phillips screws - $1.99 pk.Quantity 1 - 545576 6mm set screw aluminum hub - $5.99.Various replacement motor options have been used over the years including the Radio Shack hobby motor and the Granger heavy duty motor.Īnother simple and inexpensive option is the DC motor sold by Servo City at: Initial parts list and this particular motor suggestion provided by Ken Huberīlack Hole back box spinning disk motors, having run continuously since 1981 while the game is powered on, often fail. Swap out all of those #313s with #44s or #47s and never worry about looking for the correct bulb again.Ĥ Replacing the Black Hole "Spinning Disk" Motor The bulbs now will light on 6VDC instead of 24VDC. To enable to bypass, simply unplug the molex you installed above, and plug each end into the molex on the wires you just ran that lead to the Q-Relay.Īll finished with the mod.Put a male molex on one wire, and a female on the other.Now run a pair of wires from the switch stack through the harness across the bottom over to where you cut the BLUE-BLUE-BROWN wire.This is how you will revert it back to factory condition. Cut the wire and put a male molex connector on one end, and a female on the other.Pull the wire out a little to give yourself some room to work.It may be easiest to trace it down the playfield from the ball gate solenoid. Now locate the BLUE-BLUE-BROWN wire under the playfield near the right side playfield hinge.Adjust the switch now while you have it out. Now the Q-Relay will activate the existing switch stack and the new one you just added. Add your new single circuit NO switch stack to the other side.Unscrew the relay from the playfield, and simply move the existing switch stack from the center position to one of the outside positions.It is on the underside of the playfield, near the left side hinge. 062 single-circuit molex connectors with pins and sockets available at pinball parts stores and arcade parts stores), and about 4 ft of 20AWG wire (any color). The only supplies you will need are a Gottlieb single circuit NO leaf switch stack (available at all the major pinball parts stores), 2 pairs of. In a nutshell, we're going to add a circuit to the Q-Relay (game over relay) so that the gate is only capable of being energized when a game is being played. So when the lamps flash their sequence, the gate moves when they machine triggers what it thinks is a lamp at that location.įortunately, its an easy fix, and can be reverted back to factory condition if needed. They forgot that the right hand side ball gate is controlled by a lamp driver, not a solenoid driver. Gottlieb made an oversight when they programmed the attract mode for the lamp sequence. The order shown in the manual vs the actual test order follows.Ģ Stopping that Gate Chatter in Attract Mode One such error in the Gottlieb® Black Hole manual lists the solenoid numbers and solenoids pulsed during solenoid test incorrectly. 9 Black Hole Lower Playfield Ball Gate Wireformġ Black Hole Solenoid Manual Solenoid Listing IncorrectĮrrors in game manuals are fairly prevalent.7 Pull Up Resistors Added to Remote Transistors (Centrally Located) on Lower Playfield.4 Replacing the Black Hole "Spinning Disk" Motor.3 Replacing Black Hole Lower Playfield Illumination Lamps with #44 Lamps.2 Stopping that Gate Chatter in Attract Mode.1 Black Hole Solenoid Manual Solenoid Listing Incorrect.
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