Original Posted By: "oakesje"
Hey all,Just finished a fun winter project.The axle for the "Jenny " gear calls for 1/8th wall, 1 1/2" od tubing. it isplenty strong for the Ford Piet as designed, but some of our heavier ladieshave experienced varying degrees of bending. After four seasons of flying,Re-Piet's big wheels began to show a noticeable "camber" meaning the axlewas taking on a permanent bend/bow. I know some people who have went to athicker wall, which adds a ton of weight and some have paid a fortune tohave the axle heat-treated by a specialty company. After much thinking anddiscussing with engineer friends, I made a new axle to the standardmeasurements and layed up a carbon fiber bar (mold shown). I made it about1/4" thick, then trimmed it for a slip fit into the axle. This was thensandwiched between two pieces of hard foam and shaped the whole enchiladafor a nice slip fit. I then coated the inside of the axle and the enchiladawith epoxy and slid it into the axle so the carbon bar will be verticallyoriented. it goes all the way to each end of the axle so there's no new"stress point" introduced. it only weighed a few ounces and it shouldcertainly help. basically we're creating a I beam out of the tube byintroducing the central web. we'll see how this one holds up to the extra weight and my occasional"carrier landing"... Douwe________________________________________________________________________________Subject: Pietenpol-List: Brazil Air Camper looking for wht n bal info + Piets flying
Pietenpol-List: Brazil Air Camper looking for wht n bal info + Piets flying
Pietenpol-List: Re: straight axle stiffener project
Original Posted By: "taildrags"
Fabrizio emailed me asking about wht n bal questions for his Air Camper - his contactinfo is Fabrizio Bolelli fabrizio.bolelli(at)electrolux.com; bolellif(at)yahoo.com.br;I'm just a learner so uncomfortable providing any advice, thought i'dpost it here plus i've told him about this forum in case he has access. I'm flying the Pietenpol Adrian Meilleur had, the newly overhauled A75 Continentalis pretty awesome, amazing to have every cylinder with compression now!! Timeto get ready for another flight to Pietenpol Meca
who else is planningto fly in?JillRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: straight axle stiffener project
Fabrizio emailed me asking about wht n bal questions for his Air Camper - his contactinfo is Fabrizio Bolelli fabrizio.bolelli(at)electrolux.com; bolellif(at)yahoo.com.br;I'm just a learner so uncomfortable providing any advice, thought i'dpost it here plus i've told him about this forum in case he has access. I'm flying the Pietenpol Adrian Meilleur had, the newly overhauled A75 Continentalis pretty awesome, amazing to have every cylinder with compression now!! Timeto get ready for another flight to Pietenpol Meca
who else is planningto fly in?JillRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: straight axle stiffener project