Just curious ... The dimensional difference of K66 and K55 profiles are obvious. But I only found one discussion of differences between K66 and K55 playability (in 2004) and it morphed into another topic. I'd like to hear from the mechanics on this.
The k66 is a pool cushion, k55 is a billiard cushion. Most like the way K55 play... Some company's switch from one profile to another.
Mainly the geometry of the rail will have the affect on the cushion..
Thats all for now. No reason for bickering'
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Rob.M
OK .. let me ask it this way. What profile would a mechanic use and why?
OK .. let me ask it this way. What profile would a mechanic use and why?
I used K66/K55 because these are on most higher end tables. BTW, I edited my 2nd question to ask what a mechanic would use if they built their own table. I was just curious but FWIW I prefer the K55s on my Medalist and the Diamonds at the other Pool Halls.-You can not just pin up k55&k66.. You have to throw U23,U56,P59,etc...etc in the mix because there all different and you can only compare one to another... Who's to say what's rite or wrong....? Then why so many different profiles?
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Thank you.
Rob.M
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Rob, if K55 is for billiard, would they bank shorter with lighter balls ( aka pool balls ) ?
if the balls are the same size why would weight change the bank angle?
Compression ratio ?
interesting...
let me see if I can clear up some of the confusion.
the only real difference between a K55 and a K66 cushion is that the K55 cushion is a tiny bit 'thicker' (and wider) than a K66.
as such, it can probably absorb a slightly harder impact, without a ball compressing the cushion to the point of knocking wood.
other than that, the "performance" of the two cushion profiles is designed to be, and SHOULD be, practically the same, when installed correctly, on the right type of rail.
why are different profiles needed to perform the same job?
simply put, because many table makers use a different "thickness" and width of rail. so, the wrong cushion installed on the wrong rail will result in the cushion nose being too high or too low. (very bad)
[ not only that, but a wrong profile cushion will make your playing field larger or smaller than it was designed to be (by up to an inch), which also changes the dimensions of your pocket openings ]
so its not really a matter of K66 versus K55 - its really a matter of: how thick and wide are my factory installed rails, and what is the angle of my subrail face. (where the cushion will be attached)
again: K55 and K66 cushions are NOT interchangeable on the same table. (without altering the rails)
when it was designed, your table was intended to have one or the other.
WOW, sorry to hear AZ allows people like this Rob.M to even speak! Absolutely nothing could be further from reality.
Rail profiles vary on manufacturer. Nose height, undercut pitch, leading arc of rubber and other variables. Even the rail core AND the core angle are factors.
I recommend AZ remove this BAD info post immediately so as not to further undercut it's reputation
Thanks, Bob Sharpe @ bobsbilliards.com
( Gabriels tables use a Kleber P37 cushion)
WOW, sorry to hear AZ allows people like this Rob.M to even speak! Absolutely nothing could be further from reality.