Creo Mechanism - Percentual deviation

[EJ_10030318]

I'm making a piston mechanism in Creo Mechanism where I'm supposed to measure the piston's acceleration when it's 45 degrees from the y-axis, but the result gives me a percentual difference of 20% from the correct answer (-47000mm/s^2) What could I be doing wrong?

[ChrisKaswer]

If you can share your model it will be very easy to answer your question - it's tough to put your situation together through a series of images. Also, which part needs to be located at 45° for your result - the crank or the conrod?

CK

[EJ_10030318]

I should also mention that my angular velocity must be 16.2 rad/s and nothing else.