Original Posted By: del magsam
Subject: Pietenpol-List: Lift strut vibrationA great example of this vibration is to look at your car radio antennaas you drive down the highway. Leon S.________________________________________________________________________________Date: Tue, 30 May 2000 09:17:23 -0700 (PDT)
Pietenpol-List: Lift strut vibration
Pietenpol-List: Lift strut vibration
Original Posted By: "Rick Holland"
Subject: Pietenpol-List: Lift strut vibration" Does this apply to the lower right strut as well?" Harvy: "leave alittle slack" (words of BHP in the old news letter) applied to the lowerend of all 4 lift struts. No problem up top because those"lolly pop"fittings are actually a hinge. I don't recall if the guy he was talkingto used jury struts or no jurys. BHP as you know didn't so I'm sure hehad vibration even though the streamline tubing he used was formed withthe 4 stiffener ribs made into them. None of this may even be a problemwith vibration dampening jury struts. It was interesting to look at AlanRudolphs lift struts at Brodhead. If you get a chance to see thesestruts check them out. Interesting note on vibration--It's fun to watchthe radio antenna on my pickup as I drive. Its made of thin wire andsometimes I see 3 waves of vibration in it as I drive. DaveAbramson--Sorry I couldn't read your question. Yours and many othershave started showing up on my screen as dark blue text on a slightlydarker blue back ground. Maybe Santa will bring me a new computer and aHooters babe to show to use it. Rick--Your winter pictures kind of makeus long for those mild Ohio winters don't it. Leon S.________________________________________________________________________________Date: Thu, 21 Dec 2006 14:29:35 -0700
Subject: Pietenpol-List: Lift strut vibration" Does this apply to the lower right strut as well?" Harvy: "leave alittle slack" (words of BHP in the old news letter) applied to the lowerend of all 4 lift struts. No problem up top because those"lolly pop"fittings are actually a hinge. I don't recall if the guy he was talkingto used jury struts or no jurys. BHP as you know didn't so I'm sure hehad vibration even though the streamline tubing he used was formed withthe 4 stiffener ribs made into them. None of this may even be a problemwith vibration dampening jury struts. It was interesting to look at AlanRudolphs lift struts at Brodhead. If you get a chance to see thesestruts check them out. Interesting note on vibration--It's fun to watchthe radio antenna on my pickup as I drive. Its made of thin wire andsometimes I see 3 waves of vibration in it as I drive. DaveAbramson--Sorry I couldn't read your question. Yours and many othershave started showing up on my screen as dark blue text on a slightlydarker blue back ground. Maybe Santa will bring me a new computer and aHooters babe to show to use it. Rick--Your winter pictures kind of makeus long for those mild Ohio winters don't it. Leon S.________________________________________________________________________________Date: Thu, 21 Dec 2006 14:29:35 -0700
Re: Pietenpol-List: Lift strut vibration
Original Posted By: Leon Stefan
There is a notation on the plans. Drawing #6, at the bottom of the upper left section, right a the lower end of the lift strut diagram from BHP. It says " Lower end of strut is given a little play to avoid chances of crystalizing fuselage fitting". Wishing everyone a great holiday season.....Ed G. ----- Original Message -----
There is a notation on the plans. Drawing #6, at the bottom of the upper left section, right a the lower end of the lift strut diagram from BHP. It says " Lower end of strut is given a little play to avoid chances of crystalizing fuselage fitting". Wishing everyone a great holiday season.....Ed G. ----- Original Message -----
Re: Pietenpol-List: Lift strut vibration
Original Posted By: Javier Cruz
Subject: Re: Pietenpol-List: Lift strut vibrationIn a message dated 12/22/2006 9:07:15 AM Central Standard Time, flyboy_120(at)hotmail.com writes:There is a notation on the plans. Drawing #6, at the bottom of the upper left section, right a the lower end of the lift strut diagram from BHP. It says " Lower end of strut is given a little play to avoid chances of crystalizing fuselage fitting". Wishing everyone a great holiday season.....Ed G.I'm keeping my lower struts tight. There's a thing called 'Modules of Elasticity', which means the metal will return to it's original dimension, as longas it does not exceed it's Modules of Elasticity. From what I understand, Steel will NOT fatigue, as long as it is not bent beyond it's Modules of Elasticity. Aluminum is a whole different animal. It will eventually fatigue,even if it does not exceed it's modules of elasticity.Chuck G.NX770CG________________________________________________________________________________Date: Fri, 22 Dec 2006 23:52:58 -0600
Subject: Re: Pietenpol-List: Lift strut vibrationIn a message dated 12/22/2006 9:07:15 AM Central Standard Time, flyboy_120(at)hotmail.com writes:There is a notation on the plans. Drawing #6, at the bottom of the upper left section, right a the lower end of the lift strut diagram from BHP. It says " Lower end of strut is given a little play to avoid chances of crystalizing fuselage fitting". Wishing everyone a great holiday season.....Ed G.I'm keeping my lower struts tight. There's a thing called 'Modules of Elasticity', which means the metal will return to it's original dimension, as longas it does not exceed it's Modules of Elasticity. From what I understand, Steel will NOT fatigue, as long as it is not bent beyond it's Modules of Elasticity. Aluminum is a whole different animal. It will eventually fatigue,even if it does not exceed it's modules of elasticity.Chuck G.NX770CG________________________________________________________________________________Date: Fri, 22 Dec 2006 23:52:58 -0600
Re: Pietenpol-List: Lift strut vibration
Original Posted By: Rcaprd(at)aol.com
Those fittings are so short and stiff that I would think the wood would absorb and dampen any destructive vibrations. Not a good place for armchair engineering though. Have a great holiday season and a prosperous New Year...Ed ----- Original Message -----
Those fittings are so short and stiff that I would think the wood would absorb and dampen any destructive vibrations. Not a good place for armchair engineering though. Have a great holiday season and a prosperous New Year...Ed ----- Original Message -----
RE: Pietenpol-List: Lift strut vibration
Original Posted By:
Re: Pietenpol-List: Lift strut vibration
Original Posted By: Darrel Jones