Brodhead Pietenpol Association

Original Posted By: John Duprey
Looking through the book "Stick and Rudder", I read a section on torque effects. It mentioned that to counter act some of these torque effects, the angle of incidence of one wing is slightly higher than the other, also the vertical stablilizer is mounted at an angle off of center. Any of this apply to rigging a piet? I have noticed an absence of trim tabs in the plans. Do piet builders add rudder/elevator trim tabs?Thanks,Joe________________________________________________________________________________

Original Posted By:> Joe Krzes[SMTP:jkrzes(at)hotmail.com]
Joe, While at Brodhead I noticed a number of Piets with the vertical stabilizeroffset. Some had bendable trim tabs also. Last year I noticed a horizontalstab trim tab. I heard a comment once from a Piet builder at Brodhead that hewould have offset the engine by a degree or two. This is about all I know. Maybe the more expereinced builders can provide more details.> ----------

Original Posted By: jmcnarry(at)techplus.com (John McNarry)
Joe Krzes asked (6-1-99) about torque, trim, ect. on Piets.I put 1/2 in. offset in my vertical stab and 1 degree side thrust on the Ford 'A'. As you probably know the plans also call for a 1 in. drop on the engine bearers. I don't know how much downthrust this gives, but I followed the plans. After flying I'll just have to see if any of this needs to change or if any horizontal stab adjustment will be necessary. (These things were sort of automatic in my modeling days...guess old habits are hard to break) Keep on reading Wolfgang Langenweische's ' Stick and Rudder'...I've yet to find theory of flight explained as simply or as well. I've revisited my copy many times over the years!Don Hicks________________________________________________________________________________