hi, i am designing a linkage to carry data from the piston inan engine to the outside of the engine and have come into a bit oftrouble. i have successfully designed my component and was tryingto build a cosmosmotion model so i could predict the forces in thepivots. every time i run the model, it works fine untill around1500 rpm where appears to change rotational direction (despite mesetting it to motor clockwise) and then fail. i have included amodel of the engine without the linkage and u can see, if u motorit to 2000rpm, that after around 8 seconds it changes direction.anyone have any ideas what im doing wrong, any help would begreatly apprechiated! thanksSolidworksMotion Studies