(Topic ID: 126319)

Transgendering a Sexy Girl into a Bally -Vid's Guide


By vid1900

4 years ago



Topic Stats

  • 46 posts
  • 18 Pinsiders participating
  • Latest reply 3 years ago by vid1900
  • Topic is favorited by 13 Pinsiders

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image-23.jpg
IMG_0952.jpg
TRANSMANUFACTURED.jpg
IMG_0921.jpg
SEXY-GIRL-BOTTOM.jpg
ROUTER-BIT.jpg
IMG_0913.jpg
Sexy-Girl-orig.jpg
sexygirl-brochure.pdf (PDF preview)
SEXY-GIRL-BLACK-HOLE.jpg
Sexy-Girl-unpainted.jpg

#1 4 years ago

So a few years ago, Classic Playfield Reproductions did a run of 30 Sexy Girl playfields.

They said in their brochure, that they were designed "to do a complete conversion of a Bally PLAYBOY" and that made sense, as the original 1979 Sexy Girl was a drop-in kit that converted a Playboy.

But if you did not look closely (as none of my clients did), you might not notice that the CPR playfields were routed only to accept Gottlieb hardware, not Bally.

So to do this conversion, you would need to kill a Bally Playboy AND a late 70's Gottlieb pinball machine to harvest all the parts. You would need the Bally wiring harness and boards. The Gottlieb coils were different voltages, drop target cages were different....sheesh, a pinhead could easily bite off more than he could chew here.

Since I had 3 Sexy Girls to build, that would mean I'd have to kill 6 pinball machines, 3 Bally and 3 Gottliebs.....

....or I could convert the playfields into a pure Bally system, making it 100x easier to build, wire and service in the future.

sexygirl-brochure.pdf
#2 4 years ago

So here you can see that the playfield was routed to accept late 70's Gottlieb hardware

Sexy-Girl-orig.jpg
#3 4 years ago

More games were made with the Classic Bally mechs than any other design.

Here, I am clamping a Silverball Mania on top of our virgin Sexy Girl.

You can see all the material that is going to have to be removed from the Sexy Girl.

You can also see I drilled a starter hole in the center of the Sexy Girl ball return hole.

IMG_0913.jpg
#4 4 years ago

A fancy router bit, called a "Pattern Bit", does all the magic here.

The guide bearing rolls around the edge of our pattern (SBM), cutting an exact replica into the Sexy Girl below.

If you lightly wax the base of the router, it will move effortlessly, giving you great feedback as you cut.

Safely glasses, hearing protection and no gloves here for sure!

ROUTER-BIT.jpg
#5 4 years ago

Sweet...Can't wait to see more..

#6 4 years ago

Here you can see the cleanly routed new holes in the Sexy Girl.

Holes smaller than the router bit (1/4") are simply drilled with conventional drill bits, using the SBM as our guide.

SEXY-GIRL-BOTTOM.jpg
#7 4 years ago

Here you can see our Sexy Girl with all her fresh holes, ready to become a Bally.

Total time = 5 minutes

IMG_0921.jpg
#8 4 years ago

She's a Bally!

Here you can see a few things:

1. All Bally hardware - easy to service, totally bulletproof design.

2. Old Gottlieb ball hole was filled with a 1/2" thick slice of 1 1/8" dowel and cleared over.

I also cut the drop target hole larger for the Bally drops, too; but forgot to take a picture of the process. It was just like the outhole, you are just routing out clearance for the switch, and you can use another playfield as a template, or just freehand it, it's that simple.

TRANSMANUFACTURED.jpg

#9 4 years ago

So we saved 3 late 70's Gottliebs from the scrapper.

We also now have a Sexy Girl that can be serviced 100% from the Bally schematics and wire color codes! Every pinwrench knows the Classic Bally system by heart, so no time-wasting, head-scratching "What the hell did they do here???".

We also saved many hours of time by not having to scab in a wiring harness and power supply for the Gottlieb coils (and all those friggin' diodes).

We simply moved all the coils, mechs and harnesses from the Playboy intact, straight over to the Sexy Girls.

One switch from the Playboy (the left inlane switch) is not used in the Sexy Girl layout, so it was cut off and wires capped - otherwise 100% Bally Playboy.

NEXT EPISODE: Installing the HD monitor in the playfields and adding over 1000 pornographic photos. Also, the adding of the new music tracks and sounds.

#10 4 years ago
IMG_0952.jpg
#11 4 years ago
Quoted from vid1900:

But if you did not look closely (as none of my clients did), you might not notice that the CPR playfields were routed only to accept Gottlieb hardware, not Bally.

Why did they do this?

#12 4 years ago
Quoted from Syco54645:

Why did they do this?

The 1979 Sexy Girl was a drop in kit.

It came with a populated playfield and a backglass, you dropped it into a Playboy cab (remember they made 19,000 Playboys) and you were good to go.

Those populated playfields were populated with Gottlieb mechs.

So in 2013, people who where swapping an existing, 1979 Sexy Girl playfield for the CPR, were very happy.

People who where freshly converting a Playboy, were in for a big surprise.

Because the CPR website and brochure only mentioned converting a Playboy, and never anything about needing a Gottlieb machine, I got lot's of angry phone calls.

-

A possible solution would have been to have asked pre-ordering customers if they were converting a Bally Playboy - then CPR could have simply routed the standard Bally holes for the majority(?) of the run.

#13 4 years ago
Quoted from vid1900:

Here you can see our Sexy Girl with all her fresh holes

Heh.

#14 4 years ago

I like that idea of using copper tape instead of a ground wire ... it just looks better! Plus, no staples!

#15 4 years ago

Were even the flippers, slings, and pop bumpers all Gottlieb assemblies too?

#16 4 years ago
Quoted from vid1900:

Also, the adding of the new music tracks and sounds.

Can't forget this gem.
amazon.com link »

#17 4 years ago
Quoted from KenLayton:

Were even the flippers, slings, and pop bumpers all Gottlieb assemblies too?

Yes, but the original playfields had custom wound coils installed so the playfield could be simply dropped into a Bally Playboy.

Gottlieb coils of the day were only 25v but Bally coils in Playboy are 43v - so you can see the fun.

The cool Gottlieb pop bumper bodies fit standard Bally pop mechs no problem. So on the games we did, the only Gottlieb parts were the pop bodies and the aprons; and those units were sourced brand new from PBR. No Gottlieb pins were harmed in the making of these 3 games.

image-23.jpg

#18 4 years ago
Quoted from vid1900:

No Gottlieb pins were harmed in the making of these 3 games.

#19 4 years ago

Very nice, Vid! Clever, and beautiful work!

Much as I'm inclined to think trying to save Gottlieb system 1 games is an exercise in futility, they do have a special place in my heart. I'm thrilled to see the road paved for 3 more to be saved.

#20 4 years ago

Vid, you are amazing!

It's a good day when another Sexy Girl is added to the population.

#21 4 years ago
Quoted from megadeth2600:

I like that idea of using copper tape instead of a ground wire ... it just looks better! Plus, no staples!

It's a lot quicker to lay down a buss of copper foil, because you don't have to solder each lamp socket.

It works good in crowded clusters of inserts.

#22 4 years ago
Quoted from vid1900:

It's a lot quicker to lay down a buss of copper foil, because you don't have to solder each lamp socket.
It works good in crowded clusters of inserts.

But what happens to the connection between the lamp socket and the copper foil as the copper tarnishes with age?

#23 4 years ago
Quoted from KenLayton:

But what happens to the connection between the lamp socket and the copper foil as the copper tarnishes with age?

Shouldn't oxidize if it's sealed up properly...

#24 4 years ago

Nice job! but looks like quite a bit of extra work in lieu of some easy to aquire parts. The only parts really needed from an early gottlieb are just the ball trough ramp, kicker and apron. Other than that the rest of the bally parts should fit without much rework to get them into place, they just won't be a match to the original SG games (such as using Bally drop targets instead of gottlieb).

I'm building mine from scratch (no donor game, just an accumulation of parts and cabinets and wiring harnesses) I already had a few scrap Gottlieb playfields so collecting the assemblies wasn't as much as hassle for me, and the bally coils will fit right into most/all of the Gottlieb assemblies.

It's kind of funny, but Neo ended up doing something similar (but a complete 180 of what you did here) when he did his Miss World Conversion

http://www.pinballplayfieldrestoration.com/index.php?mact=Album,m4,default,1&m4albumid=13&m4returnid=52&page=52

http://www.pinballplayfieldrestoration.com/uploads/images/Miss%20World/outhole%20top.jpg
http://www.pinballplayfieldrestoration.com/uploads/images/Miss%20World/ball%20through%20top.jpg

The Kiss donor he started with was some bootleg Euro playfield as it had Gottlieb flipper mechs and a Williams Ball trough assembly under a Bally apron (and had circle inserts instead of the Bally arrow shapes). I don't think he realized this as he modified the Ms World playfield outhole area to fit the Williams parts he had on the weird Kiss. Stu also did one of the Miss World conversions and the holes for the outhole lined up perfectly with the stock Bally hardware so the conversion easy for him as he had a real Bally Kiss and (unlike Sexy Girl) all the standard parts transferred without modification.

#25 4 years ago

what are you doing for the cabinet artwork and the missing projector unit?

#26 4 years ago
Quoted from KenLayton:

Were even the flippers, slings, and pop bumpers all Gottlieb assemblies too?

Yes. The original Sexy Girl made by Ranco (and assembled by Bell Games) uses a fully Bally cabinet and circuit board set, but the the playfield and all parts on it were new assemblies. They made these games in the factory by taking existing Bally Cabinets, scrapping whatever playfield was in it and then putting in these newly made playfield assemblies. The games they converted did not actually have to be Playboys as they weren't reusing any of the old playfield parts, just the cabinet and board sets. They put this horrible wrinkle black paint job over the original cabinet artwork and them put Bally Playboy software in the chips on the MPU board. They made about 100 of these in Europe.

Stu had an original one with the projector and when he restored his he sanded down the cabinet to find out that the bottom cabinet was originally a strikes and spares and the head was a Bobby Orr Power play (or something like that). So it wasn't even a single full game they used for that particular conversion

So I think the reason for the Gottlieb mechs is that the overseas pinball companies mostly would buy or model their parts after the American pinball companies and even though it was a Bally conversion Bell games used mostly Gottlieb (or Gottlieb) styled assemblies at the time, although after 1980 it looks like they changed to all Bally mechs.

#28 4 years ago
Quoted from kbliznick:

Nice job! but looks like quite a bit of extra work in lieu of some easy to aquire parts.

About 5 minutes of extra work to route out the game into a Bally.

About 10 minutes to fill in the old Gottlieb holes.

Playfields all got an extra clear coat, of course.

#29 4 years ago
Quoted from kbliznick:

what are you doing for the cabinet artwork and the missing projector unit?

The games all got HD monitors installed under a clear window (instead of the frosted projector window).

That gave us the ability to use the 190 PG-13 images from the original game, or 1000 much better hardcore images.

The higher the multiplier you have lit, the filthier the images displayed.

#30 4 years ago
Quoted from kbliznick:

It's kind of funny, but Neo ended up doing something similar (but a complete 180 of what you did here) when he did his Miss World Conversion

Quoted from kbliznick:

The Kiss donor he started with was some bootleg Euro playfield as it had Gottlieb flipper mechs and a Williams Ball trough assembly under a Bally apron (and had circle inserts instead of the Bally arrow shapes). I don't think he realized this as he modified the Ms World playfield outhole area to fit the Williams parts he had on the weird Kiss.

Yeah, I've seen that crazy Bally Coil, Williams ball trough mech thing on his site before.

Truly a Frankenstein and that's what makes it cool.

#31 4 years ago
Quoted from KenLayton:

But what happens to the connection between the lamp socket and the copper foil as the copper tarnishes with age?

It has not tarnished in 2 years, so it may have zinc added to it.

Even the adhesive used is conductive.

If 20 years from now the copper tarnishes, you could:

1. Solder the sockets to the copper foil (the copper readily accepts solder when added to the V buss).

2. Put a Lock Washer between the foil and the lamp socket.

3. Solder in a conventional bare buss wire.

4. Replace the copper foil (probably a 5 minute job for what you see here).

#32 4 years ago
Quoted from vid1900:

The 1979 Sexy Girl was a drop in kit.
It came with a populated playfield and a backglass, you dropped it into a Playboy cab (remember they made 19,000 Playboys) and you were good to go.
Those populated playfields were populated with Gottlieb mechs.
So in 2013, people who where swapping an existing, 1979 Sexy Girl playfield for the CPR, were very happy.
People who where freshly converting a Playboy, were in for a big surprise.
Because the CPR website and brochure only mentioned converting a Playboy, and never anything about needing a Gottlieb machine, I got lot's of angry phone calls.
-
A possible solution would have been to have asked pre-ordering customers if they were converting a Bally Playboy - then CPR could have simply routed the standard Bally holes for the majority(?) of the run.

I see so I guess it was correct in a way...

#33 4 years ago
Quoted from Syco54645:

I see, so I guess it was correct in a way...

Yes.

For instance Stu has an original Gottlieb populated SG, so it was correct for him.

But for everyone that I spoke to, they all though they were just doing a playfield swap with their Playboy. And from reading the CPR flyer, you can see why they thought that.

-

Either way, a few minutes of work and the games did indeed become simple Playboy swaps.

#34 4 years ago

Funny thread title. Maybe Skit-B can work on a Bruce Jenner themed pin.... Sort of along the lines of BOP. "I am a woman now"... "Oh no."

#35 4 years ago
Quoted from KingDaddy:

Funny thread title. Maybe Skit-B can work on a Bruce Jenner themed pin.... Sort of along the lines of BOP. "I am a woman now"... "Oh no."

Unless he actually gets his cock cut off, I'm calling bullshit on the whole thing.

#36 4 years ago

OK. Vid1900...I am impressed...Very impressed....You do some incredible documentation.

#37 4 years ago

A few of you guys have been emailing me wanting details about the HD monitor, switch wiring, apron graphics, sounds, and all that kind of detail.

I just quickly plopped this guide up for the Pinsiders who were on the Whitewood thread, demonstrating how to route out a whitewood using another playfield as a template.

When I have more time, I'll post the whole project in detail.

The software has been running in a commercial environment for about 8 months, the latest version, 3 months.

#38 4 years ago

Can't wait, my original projector just broke down.

#39 4 years ago
Quoted from vid1900:

Unless he actually gets his cock cut off, I'm calling bullshit on the whole thing.

lol. Sorry, I don't hear that every day.

#40 4 years ago
Quoted from emkay:

lol. Sorry, I don't hear that every day.

Lucky you!

#41 4 years ago

Great work (again)! Question: Why didn't you paint that black area near original outhole to cover that modification? That would be the cherry on the top of this mod.

#42 4 years ago
Quoted from Tensikka:

Why didn't you paint that black area near original outhole to cover that modification?

I did not want to modify the original artwork tloo much.

For instance, I really wanted to fill in the "S" next to the center target (where the chick is sitting on the pile of sausages). All the other letters on the inserts are red, yet that "S" was left white.

It's white on the original playfields, so after some consideration, it stayed white.

Sexy-Girl-unpainted.jpg

On one of the playfields, I did paint the wood plug for the outhole flat black.

I though that it might look good if someone was looking under the apron from the back of the machine.

2 of the clients did not like that idea, so their outhole plugs just got blended with the surrounding wood.

SEXY-GIRL-BLACK-HOLE.jpg

2 months later
#43 3 years ago

I've barely started working on one of these as well. Good idea for the ball trough. Thanks for the tips!

#44 3 years ago
Quoted from awarner:

I've barely started working on one of these as well. Good idea for the ball trough. Thanks for the tips!

Another tip:

The left g-i-r-l-s kickback lane is too narrow as dimpled and will cause ball hangups.

You can offset the wire guide dimples and drill to the right, or (if you already drilled your holes) run the left wood siderail through a joiner and create the clearance.

#45 3 years ago

Thanks for the playfield tip! I will use it. I'm planning to custom wire it and use a P-Roc to run the game. I plan to have at least two rule sets, one that's original and another that's more complicated. I have other ideas that make it both an old style game and a modern game at the same time. If anyone has a reasonably priced playfield for sale, mine is a poor bronze. Mostly some color registration issues but if I'm going to do it, I'd like to get a nicer one. I'll still proceed as planned. Not a lot of recent work (or any for that matter), but I do have a blog at http://www.sexygirlpinball.com. Actually work safe!

#46 3 years ago
Quoted from awarner:

mine is a poor bronze. Mostly some color registration issues but if I'm going to do it, I'd like to get a nicer one.

Any pics?

Is it fixable before you clearcoat?

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