Hope this is useful to both groups: I am going to expand this conversation a little to the whole installation practice which seem to me to be a common sense approach to mounting a wooden prop and maybe even a metal one. First use the star pattern to tighten the prop bolts as that well keep the prop from crushing on one side first. Second using the star pattern, torque in increments to the final torque setting. I usually go around 3 times to achieve the final torque increasing by 1/3 of the total final value each time around the pattern. I also use a torque wrench that is in inch/pounds to be more precise about the final torque. One other item for safety and ease is to remove the spark plugs, ( you then know the engine won't kick and for tracking you won't be fighting the compression to turn the prop and not have the plane move for accuracy, tip compliments of WW) I have been told that a substantial number of props returned to manufacturer's have been over torqued and crushed into the prop hub (repairable but not to be ignored). It is my understanding that there should not be crush marks (indentations) when a prop is installed properly. My opinion is the shimming that Oscar describes would be the next progression to get a prop in track. I have never had a Sensenich CNC'd prop out of track mounting it this way. This is not a difficult process, just needs a procedure followed to achieve good results.Hopefully your results don't vary,Joe Horton,Coopersburg, Pa. ---------- Forwarded Message ---------- From: "Mark Jones" <flyk...@charter.net>
----- Original Message ----- From: "Dan Heath" <da...@windstream.net> I have a Sensenich prop and it tracks 3/16" different from tip to tip. I have always used Sterba props in the past and have never had this problem. So, what to do to correct this? It seems like a defect in the prop, but maybe not. Dan, Torque the bolts on the blade side which is fartherest forward by one foot pound at a time till the tips even out. It should only take one or two additional pounds to even it out. Mark Jones (N886MJ) Stevens Point, WI ____________________________________________________________ 60-Year-Old Mom Looks 27 Mom Reveals Free Wrinkle Trick That Has Angered Doctors! http://thirdpartyoffers.juno.com/TGL3141/4ed2ce5de283d621ffdst06duc
