---------------------------------------------------------- RV9-List Digest Archive --- Total Messages Posted Sat 10/21/06: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:08 PM - Re: Wing skin oil-canning (Chenoweth) 2. 06:38 PM - Re: Wing skin oil-canning (Michael T. Ice) ________________________________ Message 1 _____________________________________ Time: 05:08:31 PM PST US From: "Chenoweth" Subject: Re: RV9-List: Wing skin oil-canning --> RV9-List message posted by: "Chenoweth" Mike, Not sure what you mean by "drilling out". I riveted my two Js into the fuselage bay and that has certainly cured the oil can problem but, of course, what will happen when the plane is flying remains to be seen. Bill ----- Original Message ----- From: "Michael Ice" Sent: Friday, October 20, 2006 7:56 PM Subject: Re: RV9-List: Wing skin oil-canning > --> RV9-List message posted by: Michael Ice > > Hi, > > Don't drill out the oil can skin, you are likely to do more damage than good. I have heard of some folks just pro-sealing in some J-stringers where the oil canning takes place. > > Mike Ice > Electrical > RV-9 > Anchorage, Alaska > > ----- Original Message ----- > From: dfischer@iserv.net > Date: Friday, October 20, 2006 1:30 pm > Subject: Re: RV9-List: Wing skin oil-canning > To: rv9-list@matronics.com > > > --> RV9-List message posted by: dfischer@iserv.net > > > > > Definitely not the issue here - All the lighting in the build > > area is > > flourescent. > > > > Do not archive > > > > > > I don't remember if I used my incandescent or my fluorescent (which > > > actually generates a surprising amount of heat) but it might > > well have > > > been the root of my problem. > > > Thanks for the tip. > > > Bill > > > ----- Original Message ----- > > > From: Norman Younie > > > To: rv9-list@matronics.com > > > Sent: Friday, October 20, 2006 10:43 AM > > > Subject: Re: RV9-List: Wing skin oil-canning > > > > > > > > > One thing that you do not want to do while riveting skins on > > is to use > > > an incandescent trouble light. The heat generated from the light > > bulb is > > > enough to expand the skin and this too can cause a loose skin. Found > > > this out a few planes ago. > > > > > > Chenoweth wrote: > > > Doug, > > > I don't have anything to add to what you've gotten from this > > and the > > > RV list. But, here's a bit of warning about what may be a > > common oil > > > can problem with the fuselage. The bay between bulkheads 707 > > and 708 > > > on my 9 was really very bad - lots of slack in the skin. My RV7A > > > (flying) neighbor has the same problem. He's living with his (I > > > gather it's quite startling when it oil cans in flight). I asked > > > Van's about putting a J stringer in. They said no problem and > > that I > > > didn't have to attach it to the bulkheads. Someone on the List > > > cautioned about cracking skin if the stiffener wasn't tied to the > > > bulkheads so I did that. I put in two due to the difficulty of > > > getting one in the exact middle. Problem solved. > > > Bill > > > Albion, Maine > > > About to rivet center section to tail cone. > > > ----- Original Message ----- > > > From: Doug Fischer > > > To: RV-9 Matronics List ; RV Matronics List > > > Sent: Tuesday, October 17, 2006 11:21 PM > > > Subject: RV9-List: Wing skin oil-canning > > > > > > > > > I just finished riveting on the top LH wing skins and I > > noticed one > > > of the > > > "squares" was indented and would "oil can" when pushed > > from the > > > inside. > > > The square is bounded by two ribs (the fourth and fifth > > from the > > > tip), the > > > forward spar, and the "J"stringer. It is the fourth bay > > inboard> from the > > > tip (RV-9). All other skin "squares" are tight/neutral. > > Any ideas > > > (other > > > than drilling out every rivet in the skin) to address this > > issue? I > > > was > > > thinking of drilling out the rivets around the square to > > allow the > > > skin to > > > average out between three squares and re-rivet. Just > > wanted to see > > > if > > > anyone else has run into this problem and worked out a > > solution.> Other > > > than this the skin is perfect (well, pretty good at > > least). Thanks > > > in > > > advance for the help! > > > > > > Doug Fischer > > > Jenison, MI > > > RV-9A Wings > > > do not archive > > > > > > > > > > > > href="http://www.matronics.com/Navigator?RV9- > > List">http://www.matronics.com/Navigator?RV9-List > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 06:38:56 PM PST US From: "Michael T. Ice" Subject: Re: RV9-List: Wing skin oil-canning --> RV9-List message posted by: "Michael T. Ice" Bill, At the beginning of this tread, Mr. Fischer was wondering if he should " I was thinking of drilling out the rivets around the square to allow the skin to average out between three squares and re-rivet". Sorry for the confusion. Mike ----- Original Message ----- From: "Chenoweth" Sent: Saturday, October 21, 2006 2:54 PM Subject: Re: RV9-List: Wing skin oil-canning > --> RV9-List message posted by: "Chenoweth" > > Mike, > Not sure what you mean by "drilling out". I riveted my two Js into the > fuselage bay and that has certainly cured the oil can problem but, of > course, what will happen when the plane is flying remains to be seen. > Bill > ----- Original Message ----- > From: "Michael Ice" > To: > Sent: Friday, October 20, 2006 7:56 PM > Subject: Re: RV9-List: Wing skin oil-canning > > >> --> RV9-List message posted by: Michael Ice >> >> Hi, >> >> Don't drill out the oil can skin, you are likely to do more damage than > good. I have heard of some folks just pro-sealing in some J-stringers > where > the oil canning takes place. >> >> Mike Ice >> Electrical >> RV-9 >> Anchorage, Alaska >> >> ----- Original Message ----- >> From: dfischer@iserv.net >> Date: Friday, October 20, 2006 1:30 pm >> Subject: Re: RV9-List: Wing skin oil-canning >> To: rv9-list@matronics.com >> >> > --> RV9-List message posted by: dfischer@iserv.net >> > >> > > Definitely not the issue here - All the lighting in the build >> > area is >> > flourescent. >> > >> > Do not archive >> > >> > >> > I don't remember if I used my incandescent or my fluorescent (which >> > > actually generates a surprising amount of heat) but it might >> > well have >> > > been the root of my problem. >> > > Thanks for the tip. >> > > Bill >> > > ----- Original Message ----- >> > > From: Norman Younie >> > > To: rv9-list@matronics.com >> > > Sent: Friday, October 20, 2006 10:43 AM >> > > Subject: Re: RV9-List: Wing skin oil-canning >> > > >> > > >> > > One thing that you do not want to do while riveting skins on >> > is to use >> > > an incandescent trouble light. The heat generated from the light >> > bulb is >> > > enough to expand the skin and this too can cause a loose skin. Found >> > > this out a few planes ago. >> > > >> > > Chenoweth wrote: >> > > Doug, >> > > I don't have anything to add to what you've gotten from this >> > and the >> > > RV list. But, here's a bit of warning about what may be a >> > common oil >> > > can problem with the fuselage. The bay between bulkheads 707 >> > and 708 >> > > on my 9 was really very bad - lots of slack in the skin. My RV7A >> > > (flying) neighbor has the same problem. He's living with his (I >> > > gather it's quite startling when it oil cans in flight). I asked >> > > Van's about putting a J stringer in. They said no problem and >> > that I >> > > didn't have to attach it to the bulkheads. Someone on the List >> > > cautioned about cracking skin if the stiffener wasn't tied to the >> > > bulkheads so I did that. I put in two due to the difficulty of >> > > getting one in the exact middle. Problem solved. >> > > Bill >> > > Albion, Maine >> > > About to rivet center section to tail cone. >> > > ----- Original Message ----- >> > > From: Doug Fischer >> > > To: RV-9 Matronics List ; RV Matronics List >> > > Sent: Tuesday, October 17, 2006 11:21 PM >> > > Subject: RV9-List: Wing skin oil-canning >> > > >> > > >> > > I just finished riveting on the top LH wing skins and I >> > noticed one >> > > of the >> > > "squares" was indented and would "oil can" when pushed >> > from the >> > > inside. >> > > The square is bounded by two ribs (the fourth and fifth >> > from the >> > > tip), the >> > > forward spar, and the "J"stringer. It is the fourth bay >> > inboard> from the >> > > tip (RV-9). All other skin "squares" are tight/neutral. >> > Any ideas >> > > (other >> > > than drilling out every rivet in the skin) to address this >> > issue? I >> > > was >> > > thinking of drilling out the rivets around the square to >> > allow the >> > > skin to >> > > average out between three squares and re-rivet. Just >> > wanted to see >> > > if >> > > anyone else has run into this problem and worked out a >> > solution.> Other >> > > than this the skin is perfect (well, pretty good at >> > least). Thanks >> > > in >> > > advance for the help! >> > > >> > > Doug Fischer >> > > Jenison, MI >> > > RV-9A Wings >> > > do not archive >> > > >> > > >> > > >> > > href="http://www.matronics.com/Navigator?RV9- >> > List">http://www.matronics.com/Navigator?RV9-List >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > >> > >> > >> > >> > >> > >> > >> >> >> >> >> >> > > >