Decagon score reel servicing
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- čas přidán 5. 09. 2024
- This video is an in-depth guide to servicing score reels in 70's vintage EM pinballs. With an emphasis on the Gottlieb Decagon unit, this will cover troubleshooting, symptoms, disassembly, mechanical theory, best practices for cleaning and lubrication. Hope you find it a useful guide to complement the information already out there. Thanks
Another great and very informative video. David is great to share what he knows, the EM pins need more people like David!
Excellent explanation, camera angles and audio. I have to redo my Airport and currently working on a Space Mission so both reels are relevant to what I am currently working on. Thank you
I've been working on Pinball Machines for a few decades and appreciate the tips and training provided here. Note that Windex may or may not wipe the numbers right off the score reel. I used to use it and then one time it cleaned the numbers off the score reel. I've been told that Windex with Ammonia is the reason this happens. Use a window cleaner without ammonia, and as you said, test it before you use it. I also appreciate the tip for holding the drive gear in place. I didn't know about that.
Love the trick for keeping the nylon drive gear in place when re-assembling the score reel. Thanks :)
I wonder if you're using 3M Standard Abrasives General Purpose Hand Pad 827505. For others who are new to lubricants, the electrical contact grease is PBR Contact Disc Grease (PBR is short for Pinball Resource). The CV Grease is automotive Constant Velocity Grease. Thanks for making this video, very informative.
Excellent video! I'm glad I came across this because I'm digging into score reels soon on a couple EM's that I recently picked up. It will be my first time really going through both my games since everything was pretty much working, just super dirty!
Most excellent! Very well done and informative
Just after 8:02 it's mentioned that you have to unsolder the coil to go deeper. Not always the case. My reels had a some slack in the wires which allowed me to pull the coil off the coil stop and tilt it up to remove the sleeve and plunger..
Superb video, wish I had watched it before spending ages on some decagon reels in the last few days!
Couple of comments:
1 its a shame the mechanism is out of view for the tip at 34:40 as this was an area of difficulty for me
2: There is no mention of the little metal arm (in view at 34:20).
When working on my game I wondered what was it's purpose but after reassembling my reel read that it is important in preventing the reel from rotating backwards (I had a 100's reel which was scoring anything between 200 and 400 on a 500 score - I solved it by swapping the 100's and the 10,000's mechanism having cleaned and greased everything else to no effect, but later read that that arm might have been my problem)
My guess for the first one is that he pushes the sliding metal piece towards him, making it press against the rubber and preventing it from springing out due to the friction on the mechanism.
Regarding your point 2, he mentions its purpose at 12:10
Fantastic video!!!
All Hail the Pacific Pinball Museum!!!!
Human saliva will clean the score reel and leave the black numbered paint alone