Hemisphere Roulette

[amk]

I thought this was interesting to ponder.

Due to the Coriolis effect a different centripetal force most be exerted on the roulette wheel in the Northern and Southern hemisphere.

Would roulette wheels at different latitudes produce slightly different stats then expected from the norm in the longterm?

[Steve]

Everything affects everything. The question is more how much do you need to consider to achieve comfortable accuracy of predictions?

If you moved the same wheel from far north to far south, then:

1. The wheel would be recalibrated and even slight differences would change patterns (depends on what causes the patterns)

2. There would be very slight differences in deceleration. Without doing some math, I'd expect they would be significant.

I'm thinking from a ballistic point of view though. If you consider just red/black bets, there would be a difference, but how would you know the difference if the red/black betting method was not accurate at all in the other hemisphere?

[amk]

Technically, how is the wheel actually calibrated, step by step?

Is the table angle taken into account or just the wheels perspective?

[Steve]

With a level as in image. Never heard of the table being considered. They measure it from the ball track, but because most dominant diamonds are due to ball track deformations, this kind of recalibration is not as effective as the casinos expect. It is actually the slight human error that does more damage

[amk]

Can a roulette wheel be calibrated as well as the pyramids? : )

link:://cryptome.org/roulette-problem1.pdf

[Steve]

There's a lot more to beating roulette than "wheel tilt". Wheel tilt is simple "one cause" of "dominant diamonds". There are other causes such as ball track deformations.

In the testing you highlighted, the testers found the wheel is quite easily beatable if there is a very small wheel tilt. But they also found the ball deceleration was different on different days, which made the computer useless unless you did everything from the start again, but other than saying this is why basic computers fail as explained at link:://:.roulettecomputers.com/ball-deceleration/, I wont get into that point.

Roulette wheel sellers will tell you their wheels are precision instruments with the highest degree of unpredictability possible. The truth is they are crude technology with a bunch of fixed features that are SUPPOSED to produce totally random spin results. There is no way to make a totally random roulette wheel, but there are ways to make it so difficult to predict that its just not worth the effort, at least with today's advanced methods. Most wheels are far from that. Most wheels are predictable enough within a reasonable range of conditions to make play viable.

There are many things wheel designers could do, but most aren't doing it. All things considered, the opportunities for successful roulette play are slowly declining but are still going to be around for a while. Recalibrated wheels or not.

[amk]

Thanks Steve.

It seems from your calibration photo that the outside rim of the wheel is the actual measuring surface. If this is the case then it must rest on either the surface of the table or the ground.

How else is it held in the air?

[Steve]

No it just sits on the BALL TRACK with nothing else supporting it. The logic is the ball track is where the ball rolls, so that's the only part that needs to be levelled at least with consideration to "dominant drop zones". It really is not a precise way of doing it because there are more variables than just wheel tilt.

[amk]

If it is determined that a wheel needs to be recalibrated, which object do they move?

[Steve]

A quick fix is they rotate it on the spot. The whole wheel. But generally recalibration means rotation and re-levelling. This is also because the ball release points on the ball track will become worn if they dont rotate it.

[amk]

In essence, do they put a beer coaster under a table leg?

How can the ball track be adjusted in mid air?

[Steve]

If you mean beer coasters, they stopped using those under table legs in the 1920's.

The ball track itself isnt adjusted. The wheel has little stumps that screw into the bottom, and they slightly adjust them to raise or lower one side of the wheel.

[amk]

Can the angle of the wheel be estimated from the tilt of the table? Are there any correlations?.

Based on the report, a minuscule tilt in any direction of the wheel (0.5, 0.25, 0.1 degree) will make an observable difference after 176 spins.

[Steve]

Tables arent level enough to do that. And even completely level wheels will almost always still have dominant diamonds because wheels are not physically perfect.

[amk]

Thanks Steve.