(Topic ID: 157230)

So what are these dimples for in my MB playfield

By Gozzle

5 years ago


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  • 12 posts
  • 10 Pinsiders participating
  • Latest reply 5 years ago by Gozzle
  • Topic is favorited by 4 Pinsiders

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#1 5 years ago

Just got my MB playfield back from being clearcoated, which, after the process showed two spots where clearcoat hadn't taken properly. Having taken a closer look, they appeared to be holes in my playfield and sure enough, a bit of research showed that these two holes were in fact dimples. I dug out a few photos on line to show what I mean.

What on earth were these dimples meant for?

Just curious.....
This is the regionHere's a close upProof that they are in fact dimples

#2 5 years ago

Check underside of playfield, maybe someone did something there...

#3 5 years ago
Quoted from Sammy31:

Check underside of playfield, maybe someone did something there.

If someone did something to the underside of the playfield there, they may have been trying to fix the drac track, where the playfield in front of Dracula droops from the weight of the motorized mechanism mounted underneath and ball hits against the exposed back edge of the Drac track result in dings and damage. A simple support bracket to correct sagging is available through Pinball Heaven (and possibly others). I installed one on a brand new OEM playfield just as a preventative measure when I completely rebuilt my MB several years ago.

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#4 5 years ago

They're on every one I've ever seen. Not sure what the plan was, but they're not used.

#5 5 years ago

They are on my original pf and not on my Mirco repro

#6 5 years ago
Quoted from Gozzle:

Just got my MB playfield back from being clearcoated,....I dug out a few photos on line to show what I mean.

PHEW! At first I thought you "clearcoated" PF was the filthy nightmare in the pics

#7 5 years ago

Sometimes balls coming out of the right orbit hit Drac's feet and drain SDTM. I wonder if Williams was thinking about adding something to prevent this and just never did.

#8 5 years ago

Never noticed them before on our MB either but hey are there.
They're not Dimples on ours, they are actually holes and they go completely through the PF.

Had our MB since 2004 and apparently never really looked to well behind Dracula.

#9 5 years ago
Quoted from OldSchoolBlood:

Sometimes balls coming out of the right orbit hit Drac's feet and drain SDTM. I wonder if Williams was thinking about adding something to prevent this and just never did.

It's right in line with the ramp wall, it looks like.

#10 5 years ago
Quoted from Pin_-_K:

Never noticed them before on our MB either but hey are there.
They're not Dimples on ours, they are actually holes and they go completely through the PF.
Had our MB since 2004 and apparently never really looked to well behind Dracula.

Yep, they go right through on my PF too - didn't notice this before.

Is George about?

#11 5 years ago

Hey Goz
I posted a similar question about a month ago with no real answers. https://pinside.com/pinball/forum/topic/monster-bash-mystery-wire-ball-guide
One of the guys that I know asked George G about this at TPF. George said that he didn't remember but asked for some pics to maybe jog his memory. Haven't heard back yet.
So anyways after building my MB
https://pinside.com/pinball/forum/topic/theres-one-more-monster-bash
my son and I were doing some MB play testing/adjusting and he said "Hey, Dad can't you adjust Drac so that he goes further into the coffin. I'm getting quite a few SDTM drains on a ball coming down the right orbit. Looks like it may be hitting Drac" This is the same thing that OldSchoolBlood mentioned a few posts previously. I couldn't adjust Drac for more travel. Also,made certain that the playfield was dead on level and 61/2 degrees inclination.
We'll lo and behold, I installed the 1/2 in ball guide almost flush with the surface (got the idea from my Surf Champ which has some guides flush with the surface) and Boom the ball deflects slightly and hits the right flipper every time. (Marco has it in stock under the MB parts) No more SDTM. Right now I'm leaving it in.
The SDTM right orbit shot might not be there for all MB's because it may be dependent on how the Drac track was routed or repaired or cleared. My MB is an original playfield that has been re-cleared.
Wally

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#12 5 years ago

Thanks for the great response Wally. If I had seen your original post, I wouldn't have needed to post myself - guess I chose the wrong search terms.

Cheers!

Goz

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