I had nylon locknuts on mine and was told by someone that they should be castelated nuts with cotter pins so I changed them. I found that if they are not orientated the right way the bent ends of the cotter pins tent to try to straighten out from the centrifugal force. I asked Ed Sterba what he recommended and he told me that he prefers nylon locknuts for two reasons. One is that you are a lot more likely to retorque the nuts regularly like you are supposed to with a wood prop. The second reason is that you can torque the nut to just the right torque unlike with a castelated nut where the correct torqe is always between to castelations lining up with the cotter pin hole.
My personal opinion is that nylon lock nuts are best. I would not use an all metal lock nut. They are made for higher temperatures and are not necessary for the prop nuts. They also loose their locking ability after being put on and taken off more than a few times. As far as I know the only difference in a prop bolt is that it is drilled in three locations on the bolt head. This is so you will be sure of having a hole in the correct place for safety wire. I believe these are used on a hub that is threaded for the bolts. You don't safety wire the head of the bolt when you have a nut on the other end. Someone correct me if I am wrong on this. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-bounces+brian.kraut=engalt....@mylist.net [mailto:krnet-bounces+brian.kraut=engalt....@mylist.net]On Behalf Of Joseph H. Horton Sent: Wednesday, March 31, 2004 2:48 PM To: kr...@mylist.net Subject: KR> Re: prop bolts Gang, What is the proper nut to use on the prop bolts? I have bolts that were listed as prop bolts but they only have a drilled head. I bought steel self locking nuts and the castle nylock nuts hoping one or the other would be correct. Joe Horton joe.kr2s.buil...@juno.com _______________________________________ to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
