Re: Pietenpol-List: tires, taxiing, & stuff (and shock cord terminal

[matronics]

Original Posted By: Rcaprd(at)aol.com
Group,With reference to the time-honored method of "whipping" (or "serving") shockcordloop-type ends, a good authority is AIRCRAFT MAINTENANCE for the AIR-PLANE MECHANIC by Brimm and Boggess, 1940, pp.397,398.Essentially, B.& B. say that rib stitching cord be used; the elastic shockcord be stretched at least 10 % while being served; each turn of thewrapping be secured by a half hitch; the length of the served section be atleast 4 times the shock cord diameter. The half hitches should be in a neatline and a couple of coats of clear dope over the whipping is recommended.Nylon tie wraps could prove handy to hold the shock cord together whiledoing the whipping job, but I would hesitate to rely on them alone to securethe terminal ends.I have used the serving method described above on landing gear shock cordsand ski rigging for over 50 years and it has always proved to be reliable.I use it on the straight axle landing gear of my Sperry Messenger Biplanereproduction and it is completely satisfactory---except that now I'm gettingtoo old and weak to stretch that 1/2" shock cord anymore!This serving method has been around since the early days of aviation and isvery much in keeping with the period represented by BHP's aeroplane.Graham Hansen (Pietenpol CF-AUN in sunny, but cool, Alberta, Canada)________________________________________________________________________________

[matronics]

Original Posted By: lshutks(at)webtv.net (Leon Stefan)
Subject: Re: Pietenpol-List: tires, taxiing, & stuff (and shock cord terminalserving...In a message dated 5/11/03 3:54:32 PM Central Daylight Time, grhans@cable-lynx.net writes:>This is how I did my split axle gear bunji's. Speaking of split axle, didn't Piper Aircraft copy this design from Pietenpol ?Chuck Gantzerwith most of a 72 X 42 prop whittled out.________________________________________________________________________________