OK, I wish there was a more comprehensive servo guide somewhere which covered lock-to-lock throw (in degrees), length of control arms (center-center for inner and outer holes and overall size) and other bit of information only I seem to be interested in...

So, in case it wasn't obvious, my question is about control arm length and rotation rage on servos. After speaking to my local hobby shop, they seem to be steering me toward either Airtronics or JR servos. Previously, I had been looking at Hi-Tech largely because their website is easy to find (A single Google search on "Hi-Tech RC") and the great deal of information they offer about their product. I left with the impression that this is the only place which Hi-Tech excels though.

So my first question is when dealing with micro and submicro servos like the Airtronics 94555Z Microlite / Aluminum Gear Servo, what is the center to center for the control arm?

Second, is my understanding that most servo's total throw range is 160 degrees?
Third, which will work better to actuate ailerons, flaps and air brakes? Push rods, Flex Rods, or something else I don't know about (Pull-Pull is not an option)

I'm asking because I am trying to work out the details for actuating Fowler flaps and air brakes, I mean spoilers, so the total throw would be immensely helpful in the calculations.

Thanks for your input in advance.

Chris