Hi

just wanted to share an informati

on I got from Art on a question I sent via mail. I needed the rotation-angle for the slave-wheel of an eliptical gear-couple:

To figure out the rotation of an elliptica ls mate, I use an integrati on formula, which can be hard to use in

a spreadshe et..

dist = major axis radius.

double inc = .0005;

double total = 0;

for( double a = 0; a <= ang; a+= inc )

{

double r1 = "Elliptica l radius at "inc" angle" ( From formula I sent earlier).

total += (r1 / ( dist - r1))*inc;

}

Gear#2 angle = total + PI - ( PI/ m_Order);

BUT... you may find this following method far easier... The following formula

will work for an elliptica l order 1 meshed to another order 1

Ang2 = the rotation angle of Gear#2

Ang1 = the master gears rotation angle.

Plug your values in this and youll get a very quick and accurate result.

Ang2 = atan(( 1 + e) / ( 1 - e) * tan(Ang1/ 2))*2;

This helped me to create my own gear-simulation inside blender with the help of drivers.

May this informati

on be helpfull for others...

cheers

martin