Hi there
I have made a model of a mechanism I will use in real life, just for fun, but anyway...
The tube in the model is hinged and the piston connedted to it should pull the flap, so that neutral position would be when flap is horizontal.
How can I make one component have more force than another? I have tried altering several values in the UI window without luck.
Maybe my model shows it better.
Whats the difference betwen .skp and .skb?
Find 8 errors 
I've made this model to sow how my dual yokesetup with gatstrutters, but its all wrong. It is supposed to move aronud the axe of the big crosstube, not the hinge to the gasstrutters. The piston is supposed to secure a centerpoint for the yokes. The piston is supposed to could be moved up and down the rod to be able to adjust that centerpoint.
Pieces also fall apart when moved or don't stay sentered. I have only made the gasstrutter before starting this model... The gas piston worked perfekt on it's own, but maybe this model was a to big tast as a second attempt?
Any help or pointers would be much appreciated. Maybe I should just take it apart and start grouping things better. I suspect some of the errors is in how the grouping has been done.
The big pointers is caused by some scalingproblems earlier in the project.
I really like the SP plugin and aim to get to know it's functions and "how's" better as time go by.
EDI2: sorry folks. wrong place... and I've got some more to work now