Based on my Studies- - I see that many different defects, or a combination of events, could cause biased-wheel sectors and/or pockets.
1) slightly bent central spindle
2) warped wheel head
3 unevenly worn ball tracks
4) tilted Wheel
6) Balls that are not perfectly rounded
7) Balls that are not perfectly balanced
9) certain rotor speeds
10) certain times of the day
11) dusty wheel
12) someone leaning against the table
13) air pressure
14) worn down pocket not noticeable by the human eye
15) scratches on the rotor
It can get very cumbersome trying to keep track of all the potential variables that may influence the data and the conditions surrounding these variables. BUT THE BOTTOM LINE IS, It's possible one wheel can be influenced by several of these factors listed above in such a way that such a biased wheel can go undetected for months, even years.
Me personally, I would never sit through 10 thousand or not even 5 thousand spins. I THINK IT'S TOTALLY REDICULOUS TO JUST RANDOMLY PICK A WHEEL AND SPEND 2 MONTHS TESTING IT FOR 10 THOUSAND SPINS,
I NEED EVIDENCE FIRST.
I believe in the main theory "that the way a certain ball scatters on a certain wheel - - based on a certain wheel speed- - hitting the rotor at a certain angle - --will leave behind certain clues - - -. Not only that, but a possible bias that can be narrowed down from 1 to 3 numbers on that subject wheel.
The reason why 5 thousand to 10 thousand spins are needed for a biased wheel attacker is because they have to test all 37 or 38 numbers. Me on the other hand, If I have all ready limited my target area to 1 or 2 nuumbers - - LETS SAY 1 NUMBER FOR THIS ARGUMENT- - than I will finish my testing 37 times faster, since I do not have to test the other 36 numbers. WHICH MEANS MY BIASED WHEEL TESTING WILL BE ON THE AVERAGE OF 37 TIME FASTER THAN THE ATTACKER THAT HAS TO COLLECT A STUDY OF 5000 SPINS
5000 DEVIDED BY 37 NUMBERS = 135 SPINS NEEDED IN MY STUDY TESTING JUST 1 NUMBER.
so the formula is
(1 number being tested) times (135 spins)= 135 spins needed
however if I had to test all 37 numbers, we use this formula
(37 numbers) times ( 135 spins) = 4995 spins needed to properly test for a biased wheel with all 37 numbers.
Since 80 to 85% of all biased are tied directly to the rotor, it would make a lot of since to first pinpoint a possible problem area on the rotor, than run a biased wheel test for that particular section or number. that way, you could be all done the biased test in a fast as 135 spins, INSTEAD OF HAVING TO SIT OR STAND THROUGH 5000 SPINS.
PERSONALLY, I JUST THINK IT'S VERY STUPID TO JUST WALK UP TO A WHEEL AND RANDOMLY START TESTING ALL 37 NUMBER WITH NO PRIOR KNOWLEDGE OR EVIDENCE. that would take atleast 250 hours, or just over 1 month to complete working at it 8 hours a day.
It wouldn't work in a real casino environment, since the wheel maintenance crew would have changes the dynamics on that wheel, once they are done rotating the wheel. However, the way I 'm talking about, if someone is good enough to locate a possible wheel biased to a certain pocket, AND JUST NEED TO TEST IF TO SEE IF THEY ARE RIGHT OR WRONG - - -than only 135 rolls are needed for the entire study for just that 1 pocket- - - too see if the tests hold up.
I know that those will argue with me, that its impossible to test 1 single for number for bias in only 135 spins. the fact is, if one gets effIcient enough to just become a scatter expert, and just watch the same wheel to locate a single pocket bias, IT'S POSSIBLE THEY BECOME SO EFFICIENT AT IT THAT THEY DO NOT EVEN NEED TO PROCEED TO STEP 2- - - WHICH IS TEST THAT SINGLE NUMBER FOR BIAS - - BECAUSE IF WE ALL READY KNOW THE BALL WILL GO either +8 OR -8 POCKETS FORM THAT TARGET NUMBER after it bounces from that particular angle, WE WOULD JUST PLAY ALL 17 NUMBERS BASED ON A CERTAIN WHEEL SPEED ONLY - - and just be a spectator if the wheel speed is to fast or to slow which would alter the way the ball bounces in that particular angle we are looking for.
Another slick maneuver is to just walk around a casino and find a rotor with unusual scratch marks ON THE ROTOR - - the question is how did those scratch marks get there? It could be from several reasons. remember, it takes a lot of force to put a scratch a piece of metal. A force great enough to cause a possible Bias worth looking into. The wheel could have been tampered with, dropped, or just a sign that it's getting worn out based on the scratch marks. You never know until you run a preliminary test, or do like me - - see if the ball reacts a certain way during the scatter process, whenever it comes or bounces near the scratch marks on the rotor.
The kind of SH_ _ I'm telling you, you won't find in a biased wheel book anywhere on the market - - because I believe those books just have general stuff in it you can find anywhere online. I ALSO BELIEVE THAT NO EXPERT ACTUALLY TELLS YOU EVERYTHING THEY KNOW. NOT EVERYTHING... THEY TEND TO KEEP THEIR BEST WORK AND SECRETS TO THEMSELVES.