Wanted Escape from the Lost World HEAD BOLTS

[lukewells]

I've had this machine probably 10 years+ and never worked out what head bolts it needs. The bolts must be thinner than normal head bolts as regular ones don't fit at all.

Anyone any ideas?

Thanks

Luke

 

[Big Phil]

@Ant-H has my pin. He may be able to give you details on the head bolts.

 

[steve brum]

Thinner and longer

 

[lukewells]

Can you be more specific Steve

 

[Ashbo]

Not sure if these are the same but I've used these on Special Force and Beat the Clock as no others reached the depths required....

Backbox screw 3/8-16 x 4.5" (11,4 cm)

www.pinball.center

 

[lukewells]

Unfortunately I know it is definitely not 3/8" as no standard bolts will fit the hole

 

[HHH]

I'm Loving the title of this thread.
It reads like an American 1950's Drive-In movie

 

[AlanJ]

Not in the parts manual?

 

[lukewells]

The manual thinks they are 3/8"

 

[Ashbo]

The manual thinks they are 3/8"

View attachment 263860

Wrong t-nuts in there?

 

[lukewells]

The bolt holes are in metal brackets in the neck.

This is so ridiculous, I am tempted to drill them out and tap them to 3/8 (assuming I have a 3/8 tap)

Also don't know if anyone has ever noticed, the bolt holes on the legs are not spaced the same as any other leg in existence

 

[lukewells]

Here is what it looks like BTW. You will see the threaded hole is much smaller.

 

[BrianSoton]

Did you find these Luke? I broke a 6803 game about 10 years ago as the cabinet was rotten so may have these? If you know approx length and can confirm they are smaller diameter I’ll check my large stash of head bolts

 

[lukewells]

I've not found any yet Brian,

I was testing some random bolts on it yesterday and it appears that it will be the equivalent of whatever an M8 bolt is in imperial, as an M8 was the closest to fitting. This is of course thinner than a regular head bolt

I'll try and work out what the length is

 

[BrianSoton]

Have you got a thread gauge in your tap & dye set?