Original Posted By: Robert Ray
Jorge; I think hickory wood is what is commonly usedforaxe handles.- You can also use ash if you are makingcabane struts from wood.- You could probably alsouse oak.Speaking of hickory axe handles, and going back toearlier posts about making the wing tip bows outof something durable to resist groundloop scrapes,you could also install axe handle outriggers likethe tri-wing Fokker airplanes had, to do the samething.- Sort of like training wheels ;o)Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net --- -------- ------ --- - le, List Admin.=0A=0A=0A ________________________________________________________________________________Date: Fri, 9 Oct 2009 06:34:39 -0400Subject: Re: Pietenpol-List: straight axle bungees
Pietenpol-List: hickory wood
Pietenpol-List: hickory wood
Original Posted By: "Jack Phillips"
Jorge; I think hickory wood is what is commonly usedforaxe handles. You can also use ash if you are makingcabane struts from wood. You could probably alsouse oak.Speaking of hickory axe handles, and going back toearlier posts about making the wing tip bows outof something durable to resist groundloop scrapes,you could also install axe handle outriggers likethe tri-wing Fokker airplanes had, to do the samething. Sort of like training wheels ;o)Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net ________________________________________________________________________________
Jorge; I think hickory wood is what is commonly usedforaxe handles. You can also use ash if you are makingcabane struts from wood. You could probably alsouse oak.Speaking of hickory axe handles, and going back toearlier posts about making the wing tip bows outof something durable to resist groundloop scrapes,you could also install axe handle outriggers likethe tri-wing Fokker airplanes had, to do the samething. Sort of like training wheels ;o)Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net ________________________________________________________________________________
RE: Pietenpol-List: hickory wood
Original Posted By: "Bill Church"
Re: Pietenpol-List: hickory wood
Original Posted By: Robert Ray
Regarding the spring and the slot and the travel:don't discount the effect of pneumatic tires. Ifyou are not using motorcycle tires, the pneumaticeffect of donut tires does a lot to dampen the impactof landing even without the springs. It's hard toquantify all of those effects in combination, particularlyif you operate off of grass and turf, but there areairplanes that have no springs, bungees, or otherdamping in their landing gear at all... just the tires.For those who use skinny motorcycle tires, there isstill pneumatic damping and cushion, but it's not asmuch of the "Pillsbury Doughboy" or "Michelin Man" effectthat donut tires have, of course.You can over-analyze this thing, guys! I say, go withthe 2-1/2" or 2-3/4" long slots. If the springs bottom outbefore the bolts reach the ends of the slots, the effect isthe same but the springs are probably better able to take ahard stop at the end of their travel than the slots andbolts are able to do the same. From there, the tireswill do their part to soften the 'thump' of a solidlanding. And the best advice of all is to operate yourPiet off of grass as much as possible. It is absolutelyheavenly, and makes all of your landings look perfect. Ilove the "ssss" of an early morning landing on damp, greengrass!Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net ________________________________________________________________________________Date: Thu, 8 Oct 2009 22:16:54 -0400Subject: Re: Pietenpol-List: hickory wood
Regarding the spring and the slot and the travel:don't discount the effect of pneumatic tires. Ifyou are not using motorcycle tires, the pneumaticeffect of donut tires does a lot to dampen the impactof landing even without the springs. It's hard toquantify all of those effects in combination, particularlyif you operate off of grass and turf, but there areairplanes that have no springs, bungees, or otherdamping in their landing gear at all... just the tires.For those who use skinny motorcycle tires, there isstill pneumatic damping and cushion, but it's not asmuch of the "Pillsbury Doughboy" or "Michelin Man" effectthat donut tires have, of course.You can over-analyze this thing, guys! I say, go withthe 2-1/2" or 2-3/4" long slots. If the springs bottom outbefore the bolts reach the ends of the slots, the effect isthe same but the springs are probably better able to take ahard stop at the end of their travel than the slots andbolts are able to do the same. From there, the tireswill do their part to soften the 'thump' of a solidlanding. And the best advice of all is to operate yourPiet off of grass as much as possible. It is absolutelyheavenly, and makes all of your landings look perfect. Ilove the "ssss" of an early morning landing on damp, greengrass!Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net ________________________________________________________________________________Date: Thu, 8 Oct 2009 22:16:54 -0400Subject: Re: Pietenpol-List: hickory wood
Re: Pietenpol-List: hickory wood
Original Posted By: "Clif Dawson"
There's nothing wrong with spruce or hemlock.Ash, hickory etc. are heavy with no real advantage.The reason for ash use in handles is shock resistanceand, if properly made, shock mitigation to one's handsand arms. Both of which are across the grain.Oak and fir are not good choices as the have lessresistance to tearout parallel to the grain.Go to this message to see analysis- message #40283;http://www.matronics.com/searching/getm ... NS=YESClif>> Jorge; I think hickory wood is what is commonly used> foraxe handles. You can also use ash if you are making> cabane struts from wood. You could probably also> use oak.>> Oscar Zuniga________________________________________________________________________________
There's nothing wrong with spruce or hemlock.Ash, hickory etc. are heavy with no real advantage.The reason for ash use in handles is shock resistanceand, if properly made, shock mitigation to one's handsand arms. Both of which are across the grain.Oak and fir are not good choices as the have lessresistance to tearout parallel to the grain.Go to this message to see analysis- message #40283;http://www.matronics.com/searching/getm ... NS=YESClif>> Jorge; I think hickory wood is what is commonly used> foraxe handles. You can also use ash if you are making> cabane struts from wood. You could probably also> use oak.>> Oscar Zuniga________________________________________________________________________________
Re: Pietenpol-List: straight axle bungees
Original Posted By: wizzard187(at)aol.com
I don't have the photo, but they used long springs and wrapped the axleexactly like a bungee.D________________________________________________________________________________Subject: Re: Pietenpol-List: straight axle bungeesDate: Fri, 09 Oct 2009 08:26:26 -0400
I don't have the photo, but they used long springs and wrapped the axleexactly like a bungee.D________________________________________________________________________________Subject: Re: Pietenpol-List: straight axle bungeesDate: Fri, 09 Oct 2009 08:26:26 -0400