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ironspider

Williams vs. DataEast Knocker & 24v or 12v?

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Greetings all, I am placing an order with Pinballlife right now and I thought I might pick up my knocker while placing this order for a Williams coin door.

So, they have two knockers, the DataEast/Sega knocker for $20.50 and the Bally/Williams knocker for $22.50.

So, I guess the first question is if anyone has a preference on either of these or if they sound really different? I will be using the "Knocker Strike Plate" from Piballlife on this build.

But, more importantly, I'm running the groovygamergear 12v/5v PSU so I was wondering if either of those knockers will really knock at 12v? Or am I going to have to get a 24v PSU as well?

I do want to add a gear motor later but those must run at 12v right? (since they come from cars and the battery in a car is 12v?)

Thanks!

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I have the Data East knocker, and it's pretty good at 24v. The knock sound produced with 12v didn't sound very authentic.

If you want a really loud knock like you get in a real pinball machine, I believe you need to power it with 48v.

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They do draw a few amps so a separate power supply would be my recommendation. I used the Bally/Williams knocker at 24v and it sounds pretty good also.

And the gear motor is 12v ironspider.

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Ah, okay. So it looks like I'll be adding a 24v PSU to the list now. Man, this "list" just keeps getting longer and longer!

Thanks gang.

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I use a 24vdc meanwell psu with 10 or 12A. you can adjust the voltage a bit, so I drive it at 27V.

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I use a 24vdc meanwell psu with 10 or 12A. you can adjust the voltage a bit, so I drive it at 27V.

Okay cool, thanks Chris (and others). I picked up a 24v 14amp PSU today that I'll drive that knocker with.

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The list does seem to get longer and longer its a nasty side effect of creating your own pinball universe. :)

Man, to be honest though I'm glad it didn't get longer all at once -- probably would have scared me off :) But now, I'm in too deep.

I'm sure by the end of this thing Chris will have convinced me to put a 240v pumpkin chunkin air cannon in my cab for something! ;)

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don"t forget your diodes across the coils.

Hey Zeb, if I run this knocker at 24v can I use the same IN4007 diode I used across my contactors? Or would I need a different diode?

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chriz99 what exact number did you use ? because i use the same 24v psu as you also at 27v but when i connect my knocker (blackbeast 22-600) to the psu direct without relay the psu led will dim and knocker does nothing ...

do you use a 24v knocker ?

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Get a 26-1200 coil and it will work like a million bucks. The low-winding count coils are really meant for higher voltages (30vdc-50vdc).

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