I'll try and give you a history of the slate depth or shelf of the diamond table. Slate depth is very important to me. In fact this was an issue that got me in the pool table business. I played at a tournament in LA in the 80's. A funny thing happened. I found my cue ball froze on the rail half way between the side and corner pocket with an object ball deep in the corner pocket. I mean Deep. I couldn't even contact the object ball without first contacting a point on the far facing. This got me thinking about pool needs specifications to ever be considered a sport.
When I now talk about slate depth I'm talking about how much ball extends out into the playing area
while sighting down the rail with an object ball froze on the closest facing as deep as can be placed in the pocket ready to fall in..whew. Hope I haven't lost anyone. I checked the specification of a gold crown back then and found 40% of the ball to be visible. I followed thru today with that same 40%. Remember, gold crowns back then had larger pocket sizes of 4 7/8 to 5 1/8. Since my pocket size is 4 1/2 I had to have my slates made deeper to keep the 40% of the ball visible that brunswick used. Remember when you make a pocket smaller, as is being done on many gold crowns, you see the slate depth go away, which is not the way the gold crown were originally designed.
Greg,
Thanks for chiming in. That definitely answers the question of why Diamond Tables have deeper shelves.
I will say that it does make me scratch my head a bit. Everything I read about Diamond Tables leads me to believe that you guys are trend setters. It appears you have completely reengineered the design of the pool table (with some help from RKC on the rail designs), while bucking the status quo and just figuring out what works best along the way. However, when it comes to something as important as the shelf depth you are saying that you are using the old Gold Crown standard of 40% of the ball being visible when looking at it from along the end rail. That seems rather arbitrary to me.
Arbitrary or not, maybe you have the perfect pocket specs. I really don't know. As a table owner, one thing that would be nice about the deeper shelves would be - you could tighten up the pockets even more without having a finished product that included practically no shelf at all. I've seen this on a few Gold Crowns and I’m not sure that’s the way to go.
My current table is a Gold Crown Wannabe (AMF). It has 4.5” inch pockets and at 4.5” there are a few balls that trickle in that wouldn’t if it had a deeper shelf but overall I think I’m right at the proper pocket size/shelf depth ratio. If I went smaller with the pockets the shelf would be too short. Now I bet a standard Diamond Pro-Am with 4.5 inch pockets could go down to 4.25” and still have enough shelf depth for the pockets to play right. But if that’s the case maybe the shelf is just a hair too big to begin with???
The fact that professional players prefer Diamonds tells me that either way you guys have it pretty close to perfect. One thing’s for sure -- I wish there were more Diamond Tables near me.
Thanks again for the info.