How many of you folks have seen and used the servo calculation spreadsheet put together by Craig Tenney? It has been uploaded in post 10 in this thread:

http://www.rcuniverse.com/showthread...388&forumid=31

The spreadsheet with some explanation is also available here:

http://www.pongo-air.com/servotorque.html

The reason I ask is that I see a lot of servo recommendations from various people. The recommendations are all across the board with little justification other than "I recommend it" or "It works for me" or "That's not enough torque". Curious, I started searching for a more scientific way to try to estimate servo torque requirements and found this spreadsheet.

While I can't vouch for it nor claim any expertise or ability to judge it's findings, it is very educational - Not only from the aspect of some surprises in it's numbers (like aileron servo requirements for the Lanier Edge 540T) it has some VERY nice features which help you work out optimum servo arm length and offset angles for odd geometries in your setups.

I've seen surprisingly little discussion on this spreadsheet here and elsewhere. I'd be interested to hear some feedback on this spreadsheet from others.

Craig did an outstanding job putting this together. It's quite impressive. Check it out and report your findings here!

Sorry the attached image is so small. RCU made me shrink it a lot. It's a tease to get you to download the spreadsheet! ;-))