WW2 Ace,

I don't use loc-tite on the Prop Bolts, just about every where else though. No lock washers either, but I do use #10 stainless steel )thin) washers to protect the aluminum prop washer. Impressions on a wood prop is normal and you might even find a slight mark or two on a carbon fiber prop. Typically you'll want to check the prop bolts after the first two flights and then maybe again after ten flights. Don't over tighten, they'll break and normally below the threaded surface. Let DA take it out if happens or unless your a machinist, drill and a easy out works.
Other GS Pilots will have other comments I'm sure.



DA recommends torquing the 4 prop bolts on a DA50 to 55 in-lbs. I was thinking of using a drop of "Blue Loc-Tite" on each bolt before torquing. What do you guys think? The first time I removed the prop that was torqued to spec I noticed that there was an impression in the wood face of my prop from the aluminum plate, is that normal? Also the bolts seemed easy to back off. The engine has only been run twice (about 30 ozs of gas). Do any of you add lock washers?
[/quote]