i am at the point on building the composite arf's kangaroo where i will install the speed brakes,

is it better to use servos to operate the speed brake???

or is it better to use air cylinders from bvm to operate the speed brake???

i already have 2 air systems for the roo, i can easily tap into the braking system to operate the brakes right??

or should i run a 3rd air system ? if i chose to use air cylinders

thanks

mark