Re: [COUPERS-TECH] Tension on cables in defence.

[Jones Family]

----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- Warren, After reading your quote from Mr. Spani I can tell that we are not talking about the same thing.  The example that Mr. Spani wrote is 100% correct.  Nowhere in this discussion did I say that cable tension would be any different between the 2 cables.    If I may use Mr. Spani's example.  Lets use the same pulley system he described but this time we will also put a spring scale on the pulleys.  The spring scale would be attached to the bolt that would normally hold the pulley in place and then the other end of the spring scale would be anchored to something solid.  As you bring up tension on the cables the spring scales attached to the pulleys will read twice the force as the spring scale attached to the cables.  That means that the pulleys (not the cables) are being pulled together or toward each other at twice the amount of force than that which is being applied to the cables.    That is why a cable system that is set at 175 Lb of tension will exert 350 Lb of force on the attachment points of the pulleys.  That was the only point I was trying to make.  Sorry if things got a little ugly, it would have helped if we were talking about the same thing.  You have my apologizes.    By the way, I have to admit that just after high school I worked as an apprentice plumber.  Sometimes I wish I would have stayed with it, I would have probably made more money, then I could afford my own airplane instead of renting from the Base Aero Club.  Of course $65.00/Hr for a 2000 Cessna 172S isn't to bad, especially when we have 4 to chose from.  And then there is the T-34 at $72.00/Hr.  On second thought, I guess I'm happy with where I am.   Mavin Jones ----- Original Message ----- From: MarWarHamp To: Coupers-tech Sent: Wednesday, March 21, 2001 8:43 PM Subject: [COUPERS-TECH] Tension on cables in defence. ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----    Your right, I must be as low than pig dodo. I surely cannot come up to you high standards. Wit, Master sergeant, A&P and Intellect that you are surely know best.    So in propensity I have come to ask your forgiveness. Because of my lack of humanity I now understand my place in this life. I make no dejected plead. March me out and feed me to the pigs.    But in my own defense I offer this. As you undoubtedly know for many years San Diego was the major player in Aerospace. We still have many of the Engineers still living and working here. Being a low life plumber I happen to have a few as customers. So I placed two calls today. If I am wrong I wanted to see the light. One who started out as a B17 / 24 maintenance person was out of town for the rest of the week. However Mr. Spani was home it evening. 858-485-1052 ask for Wayne.      “ This is not a mathematical problem. This is just common sense.” “Using one cable pull it around a pulley. The pulley will act as the bellcrank which is free to move. Using a spring scale to act as the tie end of the cable. When the spring scale reads x number of pounds the tensiometer will read very close to the same. (center of span) The only difference between the two cable is the friction drag of the bearing in the pulley or bellcrank.” So I am guessing he is also wrong? Yours, Warren H   --------------------------------- to unsubscribe send mailto:[EMAIL PROTECTED] ____________________________________________________________ T O P I C A -- Learn More. Surf Less. Newsletters, Tips and Discussions on Topics You Choose. http://www.topica.com/partner/tag01 --------------------------------- to unsubscribe send mailto:[EMAIL PROTECTED] ____________________________________________________________ T O P I C A -- Learn More. Surf Less. Newsletters, Tips and Discussions on Topics You Choose. http://www.topica.com/partner/tag01