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Main => Builders Discussions => Topic started by: Boeing Skunk Works on December 13, 2009, 07:57:56 PM
For determining how many pounds of force a gas strut needs to be to give a 5-7 pound pull/push force on a control wheel that is 25" above the pivot fulcrum and the strut is mounted 3" below the pivot fulcrum?
I don't know what strength of strut to buy because I don't know this formula.
Hehe... I tried calculating my own gas struts for the yoke and ended on 200nm on a single system, but this was after folding a lot of papers, saying "... to he** with it, I'll try the 200s", and came out fine :) :)
See if you understand:
http://en.wikipedia.org/wiki/Lever (http://en.wikipedia.org/wiki/Lever)
Well, I understand the principles of the explanation, but I don't know how to plug the figures into the formula to arrive at the solution.
Load arm X Load Force = Effort arm X Effort Force
3" X 60Lbs (for example) = 25" x ?????
I don't understand how to arrive at the effort force knowing the first three variables.
Thanks for posting that. Maybe a math major here can help.
Think of it in terms of force ie 3" x 60lbs = 180 in/lbs. So in your example, if you have a moment arm of 25" then to achieve the same force then you need a weight or effort of 180lbs divided by 25" - which equates to circa 7lbs.
Regards
David
Thanks for helping out with that.
Welcome to the forum. Out new resident math major! :idiot:
1 + 1 = 4 right? I am not a math major by far.. Good to know we have someone here that is good with numbers...
Trev