#### pagaspoling

##### Member

Lately I've been playing a lot of 3-cushion and I've thought a lot about carom angles and how to create angles. When I read the Technical Proof section at Dr Daves site and the Physics Resources I have a hard time to find any explanation on how spin axis affects the carom angles.

First lets assume that the CB is traveling in exactly the same direction just before impact with the OB for all different scenarios. Secondly lets assume the CB has the same spin rate factor for all shots.

If the CB hits the OB with a spin axis that is vertical the CB will travel down the tangent line and follow the 90 degree rule. If the spin axis is horisontal when the CB hits the OB the CB will swerve into: "The final ball direction is at 2/7 of the distance x between the tangent line and aiming line, measured perpendicular to the tangent line (i.e., parallel to the impact line)." (from TP_A-4).

With a spin axis that is tilted 45 degrees what will the final CB direction be? In the spin axis flip video the ball seem to start to roll with its spin axis approximately 45 degrees thats why i chose that angle. How can I predict carom angle from spin axis?

First lets assume that the CB is traveling in exactly the same direction just before impact with the OB for all different scenarios. Secondly lets assume the CB has the same spin rate factor for all shots.

If the CB hits the OB with a spin axis that is vertical the CB will travel down the tangent line and follow the 90 degree rule. If the spin axis is horisontal when the CB hits the OB the CB will swerve into: "The final ball direction is at 2/7 of the distance x between the tangent line and aiming line, measured perpendicular to the tangent line (i.e., parallel to the impact line)." (from TP_A-4).

With a spin axis that is tilted 45 degrees what will the final CB direction be? In the spin axis flip video the ball seem to start to roll with its spin axis approximately 45 degrees thats why i chose that angle. How can I predict carom angle from spin axis?

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