Who are our Demolition Derby fans here?

My wife and I got a chance to play masco73's 4 player DD when I went to pick up a Gyruss the other day. It's a really cool 4 player game.
 
I have the 4-player Demolition Derby. Though people keep calling it a cocktail, the 4-player is actually designated by Bally Midway as an "Island" (probably because you don't sit at it as you do a real cocktail game). Played it a lot BITD at Adventureland amusement park in Iowa. Had to do some major restoration to it due to mouse infestation, but thanks in part to Rikiti's repo artwork for it, it came out great. I have some restoration pics that I need to post; just haven't gotten around to it.
 
I have the 4-player Demolition Derby. Though people keep calling it a cocktail, the 4-player is actually designated by Bally Midway as an "Island" (probably because you don't sit at it as you do a real cocktail game). Played it a lot BITD at Adventureland amusement park in Iowa. Had to do some major restoration to it due to mouse infestation, but thanks in part to Rikiti's repo artwork for it, it came out great. I have some restoration pics that I need to post; just haven't gotten around to it.

Very cool that you are an owner of one of these. I have to admit though, it's the first time I've ever heard of a game classified as an "island" version (not saying in any way that your terminology isn't accurate, simply saying it's the first time I've heard that term associated with a game). Interesting how one never knows it all in this hobby, even when they think they are pretty far along!
 
Very cool that you are an owner of one of these. I have to admit though, it's the first time I've ever heard of a game classified as an "island" version (not saying in any way that your terminology isn't accurate, simply saying it's the first time I've heard that term associated with a game). Interesting how one never knows it all in this hobby, even when they think they are pretty far along!

Yep. If I recall, it's on one of the cabinet stickers somewhere. Just like if you look at the sticker of a deluxe Discs of Tron you'll see it designated as Environmental.

I like the "Island" terminology, though no one uses it (though Environmental has gained near 100% recognition, go figure). Comes in handy when discussing Eliminator. Lots of people refer to the 4-player as just "eliminator cocktail", but forget that there was a 2-player Eliminator cocktail as well.
 
I had one of each. I sold the "island" to a guy in Brazil, I think. He had me ship it to FL, and his shipper took care of the rest. Great, great game.
 
While looking at the pics of Souzilla's, I noticed something interesting:

http://forums.arcade-museum.com/showthread.php?t=181810

The 4-player island version has no gas pedals. This explains why the MAME versions I have of the game are already dialed in to move the cars at the start, and there's no key mapping for "gas". Just forward and reverse.

The 2 versions of MAME I've seen out there both were the 4-player versions of the ROM. The only diff was one was positioned vertically, and the other horizontally, on the screen. I guess I either need to keep looking for the UR version or, be happy with just the forward-reverse functionality.
 
While looking at the pics of Souzilla's, I noticed something interesting:

http://forums.arcade-museum.com/showthread.php?t=181810

The 4-player island version has no gas pedals. This explains why the MAME versions I have of the game are already dialed in to move the cars at the start, and there's no key mapping for "gas". Just forward and reverse.

The 2 versions of MAME I've seen out there both were the 4-player versions of the ROM. The only diff was one was positioned vertically, and the other horizontally, on the screen. I guess I either need to keep looking for the UR version or, be happy with just the forward-reverse functionality.

Neither version had gas pedals; controls are just a 360 Steering wheel, and a forward/reverse knob (basically a two way leaf joystick).

Edit: and a start button
 
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Gas pedals shown on the initial version:

demo_derby.jpg


But none on the newer UR version.. interesting!

29167002.jpg
 
This has been a good learning lesson on this game (thanks all). I'm just hoping now that my MAME hi-lo shifter will work with this. Worst case it's an up-down for fwd, and an up-down for reverse (rather than up being one direction, down being the other).

I'm liking the fact that I don't have to worry about the gas pedal for this game. My daughter whines about it bc she can't reach the gas pedal in the cab LOL
 
I'm not sure what your hardware looks like, but an up/down shifter, like pole position, uses a single switch (nc = low gear, no = high gear). Demolition Derby requires a forward switch and a reverse switch (two), so you'll might only be able to go one direction. Course, you could always modify your hardware so that each position does have a switch triggered; then you just have the mechanical issue that being in neutral would be tricky.
 
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Yup. No gas.

Also, I think both version had "wonky" wheels (wobble when they spin) from the factory. Is that right?

That would occur when the wheels were abused :) but the hardware was not designed to be "wonky". My restored DD wheels spin...um...whatever the word for "non-wonky" would be.
 
I'm not sure what your hardware looks like, but an up/down shifter, like pole position, uses a single switch (nc = low gear, no = high gear). Demolition Derby requires a forward switch and a reverse switch (two), so you'll might only be able to go one direction. Course, you could always modify your hardware so that each position does have a switch triggered; then you just have the mechanical issue that being in neutral would be tricky.

I've actually been told that the fwd-reverse issue was addressed in the "Shiftermame" build of the DD game rom, but I have not yet been able to verify that myself.

I'm thinking that if I really want to wire up the shifter specifically for this game, using a setup as you have mentioned, I could just wire up a 2nd mouse pcb inside the game cabinet, and maybe do a swap between that game's PCB and the PP one as needed. Who knows right now (rhetorical stmt).
 
Neither version had gas pedals; controls are just a 360 Steering wheel, and a forward/reverse knob (basically a two way leaf joystick).

Edit: and a start button

A-ha... thanks for correcting. I had the two jumbled in my mind as well when saying the one had a pedal. I was thinking of the older Chicago Coin version. Fortunately I prefaced my message with IIRC, so I can just be penalized for recalling incorrectly. :D
 
"great driving, Junkyard jockey"

I played this tons BITD. Usually the island version. I have never seen any come up for sale around here.
 
demo derby 4 player is awesome but not fun to move by any means. A Demo Derby cocktail cabinet is like a rubic's cube on steroids with steering wheels.
 
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