Originally posted by EXCAP232
I don't use a tork wrench but really put pressure on with a prop wrench (the ones that are also used for the glow plug). On some engines that have a tendency to spit the prop off the crescent wrench comes out. For most engines of the glow variety this is sufficient. Checking after a few flights and re tightening will normally hold quite well with an APC prop. Wood has a tendency to compress and needs to be checked more often.
EXCAP232
Hi EXCAP232,
I guess they have to be pretty tight.
So far I have never seen a torque wrench or any specs for how tight the nut should be.
After my 5th flight I did snug it back up and think I got close to 1/2 turn but it's TIGHT.
I guess like real aircraft it's best to do a pre flight and check it out.
Happy Flying
Thanks for the post