Is there a way to put a copy rotation constraint with an influence higher than 1? I'm making a little animation with some gears. I want that if I rotate the first gear, all the gears rotate with the gain given by the gears.

For doing that I've choose the copy rotation constraint. But in my case, sometime a gear turn one time and the second turn tiwce. With the copy roation I can only put an influence between 0 and 1. 

So my question is : Is there a way to put a copy rotation constraint with an influence higher than 1? Or is there an other solution to do what I want?
1.0 is the maximum influence for any given constraint, so setting it beyond 1.0 is impossible.

Using the Transformation constraint, you could easily map any kind of simple transformation from one object to the other. In the following example, the object being constrained will rotate twice the amount of Cube_target's rotation in the Y axis.



Checking Extrapolation will extend the transformation beyond stated range of values.