---------------------------------------------------------- RV4-List Digest Archive --- Total Messages Posted Sun 09/14/03: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:25 PM - Crack in prop hub bore (PGLong@aol.com) 2. 07:01 PM - Re: Crack in prop hub bore (Ross Scroggs) 3. 08:11 PM - Re: Crack in prop hub bore (RV4Joe) ________________________________ Message 1 _____________________________________ Time: 04:25:34 PM PST US From: PGLong@aol.com Subject: RV4-List: Crack in prop hub bore --> RV4-List message posted by: PGLong@aol.com Hi Group I just posted a picture of the crack that is seen in my prop hub bore. Sure would like some opinions as to if this is airworthy or not. Crack is in both sides and radiate towards each tip. Don't think they are deep or even rob any necessary strength but then again, a prop specialist I am not. Thought about trying to fill with some thin epoxy. What do you think? Click on the picture at this address for a close up. http://www.matronics.com/photoshare/PGLong@aol.com.09.13.2003/index.html Thanks, Pat Pat Long PGLong@aol.com N924PL (reserved) Working on an RV4 (Just got the wings on!) Bay City, Michigan ________________________________ Message 2 _____________________________________ Time: 07:01:55 PM PST US From: "Ross Scroggs" Subject: Re: RV4-List: Crack in prop hub bore --> RV4-List message posted by: "Ross Scroggs" Pat, I've worked around numerous wooden props in my 25+ years of aircraft maintenance and have always been taught that any crack, no matter how small, is no good. A crack cannot be repaired and then the prop be rebalanced. You don't want to sling a blade at 300 feet, or at any altitude. It is my opinion that you should engrave "Not Airworthy" on the hub and retire it to the wall above the fireplace. Better safe than sorry. Ross Scroggs, A&P RV4 3911 Wings Conyers, Ga. ----- Original Message ----- From: Subject: RV4-List: Crack in prop hub bore > --> RV4-List message posted by: PGLong@aol.com > > Hi Group > > I just posted a picture of the crack that is seen in my prop hub bore. Sure > would like some opinions as to if this is airworthy or not. Crack is in both > sides and radiate towards each tip. Don't think they are deep or even rob any > necessary strength but then again, a prop specialist I am not. Thought about > trying to fill with some thin epoxy. What do you think? Click on the picture at > this address for a close up. > > http://www.matronics.com/photoshare/PGLong@aol.com.09.13.2003/index.html > > Thanks, Pat > > > Pat Long > PGLong@aol.com > N924PL (reserved) > Working on an RV4 (Just got the wings on!) > Bay City, Michigan > > ________________________________ Message 3 _____________________________________ Time: 08:11:09 PM PST US From: "RV4Joe" Subject: Re: RV4-List: Crack in prop hub bore --> RV4-List message posted by: "RV4Joe" Or retire it into the fireplace. ----- Original Message ----- From: "Ross Scroggs" Subject: Re: RV4-List: Crack in prop hub bore > --> RV4-List message posted by: "Ross Scroggs" > > Pat, > I've worked around numerous wooden props in my 25+ years of aircraft > maintenance and have > always been taught that any crack, no matter how small, is no good. A crack > cannot be repaired > and then the prop be rebalanced. You don't want to sling a blade at 300 > feet, or at any altitude. > It is my opinion that you should engrave "Not Airworthy" on the hub and > retire it to the wall above > the fireplace. Better safe than sorry. > > Ross Scroggs, A&P > RV4 3911 Wings > Conyers, Ga. > > ----- Original Message ----- > From: > To: > Subject: RV4-List: Crack in prop hub bore > > > > --> RV4-List message posted by: PGLong@aol.com > > > > Hi Group > > > > I just posted a picture of the crack that is seen in my prop hub bore. > Sure > > would like some opinions as to if this is airworthy or not. Crack is in > both > > sides and radiate towards each tip. Don't think they are deep or even rob > any > > necessary strength but then again, a prop specialist I am not. Thought > about > > trying to fill with some thin epoxy. What do you think? Click on the > picture at > > this address for a close up. > > > > http://www.matronics.com/photoshare/PGLong@aol.com.09.13.2003/index.html > > > > Thanks, Pat > > > > > > Pat Long > > PGLong@aol.com > > N924PL (reserved) > > Working on an RV4 (Just got the wings on!) > > Bay City, Michigan > > > > > >