---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Fri 07/24/09: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:51 AM - About those stiffening circles around the lightening holes in wing ribs... (Ralph Finch) 2. 11:42 AM - Re: About those stiffening circles around the lightening holes in wing ribs... (Dave Nellis) 3. 12:24 PM - Re: RV9-List: About those stiffening circles around the lightening holes in wing ribs... (RScott) 4. 01:32 PM - Re: About those stiffening circles around the lightening holes in wing ribs... (Jim) 5. 02:35 PM - Re: Re: RV9-List: About those stiffening circles around the lightening holes in wing ribs... (John Bright) 6. 04:46 PM - Re: About those stiffening circles around the lightening holes in wing ribs... (Matt Dralle) 7. 08:21 PM - Looking for Builders Asistance (Garey Wittich) 8. 09:27 PM - Re: Looking for Builders Asistance (Bruce Gray) 9. 10:14 PM - Stuff for sale (Emmanuelle Richard) ________________________________ Message 1 _____________________________________ Time: 10:51:14 AM PST US From: "Ralph Finch" Subject: RV-List: About those stiffening circles around the lightening holes in wing ribs... Fellow RVers, I need to mount some stuff on wing ribs. But, the ribs have holes cut out for lightening...and around each hole is stamped a modest raised/indented circle in the sheet metal, for stiffening I suppose. It is the raised side that causes problems when trying to attach something flat there. I'd like to somehow squash or flatten a portion of the raised circle, just enough so that the things I need to mount will fit flush on the rib. Yes, some things must go onto the rib. No, some of this I cannot mount on the other side. What have RVers done to solve this little problem? Thanks, Ralph Finch Davis, California RV-9A QB-SA ________________________________ Message 2 _____________________________________ Time: 11:42:03 AM PST US From: Dave Nellis Subject: Re: RV-List: About those stiffening circles around the lightening holes in wing ribs... What about using spacer plates or washers to move the equipment out away from the flange? Dave --- On Fri, 7/24/09, Ralph Finch wrote: > From: Ralph Finch > Subject: RV-List: About those stiffening circles around the lightening holes in wing ribs... > To: rv-list@matronics.com, rv9-list@matronics.com > Date: Friday, July 24, 2009, 1:48 PM > Fellow RVers, > > I need to mount some stuff on wing ribs. But, the > ribs have holes cut out > for lightening...and around each hole is stamped a modest > raised/indented > circle in the sheet metal, for stiffening I suppose. > > It is the raised side that causes problems when trying to > attach something > flat there. I'd like to somehow squash or flatten a > portion of the raised > circle, just enough so that the things I need to mount will > fit flush on the > rib. Yes, some things must go onto the rib. No, some > of this I cannot mount > on the other side. > > What have RVers done to solve this little problem? > > Thanks, > Ralph Finch > Davis, California > RV-9A QB-SA > > ________________________________ Message 3 _____________________________________ Time: 12:24:15 PM PST US From: RScott Subject: RV-List: Re: RV9-List: About those stiffening circles around the lightening holes in wing ribs... Those rings provide strength, although I don't know how much. And flattening them weakens the metal beyond what it was before the groove was stamped in them. One solution might be to just put spacers under your parts, outside the rings if your "stuff" spans the diameter of the rings. Ralph Finch wrote: > Fellow RVers, > > I need to mount some stuff on wing ribs. But, the ribs have holes cut out > for lightening...and around each hole is stamped a modest raised/indented > circle in the sheet metal, for stiffening I suppose. > > It is the raised side that causes problems when trying to attach something > flat there. I'd like to somehow squash or flatten a portion of the raised > circle, just enough so that the things I need to mount will fit flush on the > rib. Yes, some things must go onto the rib. No, some of this I cannot mount > on the other side. > > What have RVers done to solve this little problem? > > Thanks, > Ralph Finch > Davis, California > RV-9A QB-SA > > ________________________________ Message 4 _____________________________________ Time: 01:32:36 PM PST US From: "Jim" Subject: Re: RV-List: About those stiffening circles around the lightening holes in wing ribs... Some have used spacers behind the items they mount on ribs such as you describe. Jim in Kelowna ----- Original Message ----- From: "Ralph Finch" Sent: Friday, July 24, 2009 10:48 AM Subject: RV-List: About those stiffening circles around the lightening holes in wing ribs... > Fellow RVers, > > I need to mount some stuff on wing ribs. But, the ribs have holes cut out > for lightening...and around each hole is stamped a modest raised/indented > circle in the sheet metal, for stiffening I suppose. > > It is the raised side that causes problems when trying to attach something > flat there. I'd like to somehow squash or flatten a portion of the raised > circle, just enough so that the things I need to mount will fit flush on > the > rib. Yes, some things must go onto the rib. No, some of this I cannot > mount > on the other side. > > What have RVers done to solve this little problem? > > Thanks, > Ralph Finch > Davis, California > RV-9A QB-SA > > -------------------------------------------------------------------------------- > > Checked by PC Tools AntiVirus (6.0.0.19 - 10.004.066). > http://www.pctools.com/free-antivirus/ > > Checked by PC Tools AntiVirus (6.0.0.19 - 10.004.066). http://www.pctools.com/free-antivirus/ ________________________________ Message 5 _____________________________________ Time: 02:35:07 PM PST US From: John Bright Subject: Re: RV-List: Re: RV9-List: About those stiffening circles around the lightening holes in wing ribs... Those rings add stiffness to prevent buckling of the rib web. If you flatten or remove the stiffening rings it's not a problem if you add stiffeners; for instance you might mount your stuff on extruded angles that provide stiffness to the rib. Thanks, John Bright ----- Original Message ---- From: RScott Sent: Friday, July 24, 2009 3:23:07 PM Subject: RV-List: Re: RV9-List: About those stiffening circles around the lightening holes in wing ribs... Those rings provide strength, although I don't know how much. And flattening them weakens the metal beyond what it was before the groove was stamped in them. One solution might be to just put spacers under your parts, outside the rings if your "stuff" spans the diameter of the rings. Ralph Finch wrote: > Fellow RVers, > > I need to mount some stuff on wing ribs. But, the ribs have holes cut out > for lightening...and around each hole is stamped a modest raised/indented > circle in the sheet metal, for stiffening I suppose. > > It is the raised side that causes problems when trying to attach something > flat there. I'd like to somehow squash or flatten a portion of the raised > circle, just enough so that the things I need to mount will fit flush on the > rib. Yes, some things must go onto the rib. No, some of this I cannot mount > on the other side. > What have RVers done to solve this little problem? > Thanks, > Ralph Finch > Davis, California > RV-9A QB-SA > > ________________________________ Message 6 _____________________________________ Time: 04:46:21 PM PST US From: Matt Dralle Subject: Re: RV-List: About those stiffening circles around the lightening holes in wing ribs... At 10:48 AM 7/24/2009 Friday, you wrote: >Fellow RVers, > >I need to mount some stuff on wing ribs. But, the ribs have holes cut out >for lightening...and around each hole is stamped a modest raised/indented >circle in the sheet metal, for stiffening I suppose. > >It is the raised side that causes problems when trying to attach something >flat there. I'd like to somehow squash or flatten a portion of the raised >circle, just enough so that the things I need to mount will fit flush on the >rib. Yes, some things must go onto the rib. No, some of this I cannot mount >on the other side. > >What have RVers done to solve this little problem? > >Thanks, >Ralph Finch >Davis, California >RV-9A QB-SA Hi Ralph, Here's how I mounted the Gretz pitot controller PC board on my RV-8. Worked pretty good: http://www.mykitlog.com/users/display_log.php?user=dralle&project=638&category=2982&log=81657&row=132 http://www.mykitlog.com/users/display_log.php?user=dralle&project=638&category=2982&log=81656&row=133 Matt Dralle RV-8 #82880 N998RV FWF Right Around The Corner... ________________________________ Message 7 _____________________________________ Time: 08:21:56 PM PST US From: Garey Wittich Subject: RV-List: Looking for Builders Asistance Greetings: Have RV-8A QB Kit. -Have completed Empennage and looking for assistance t o complete Project. -Does anybody know of any person(s) that do Builders Assistance in Southern California (preferably in the Los Angeles Area) ???? Appreciate any leads !!!! Thanks, -Garey Wittich - Santa Monica, CA - -(310) 392-1682=0A=0A =0A ________________________________ Message 8 _____________________________________ Time: 09:27:55 PM PST US From: "Bruce Gray" Subject: RE: RV-List: Looking for Builders Asistance Aircrafters LLC, Dave Saylor. www.aircraftersllc.com Bruce www.Glasair.org -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Garey Wittich Sent: Friday, July 24, 2009 11:17 PM Subject: RV-List: Looking for Builders Asistance Greetings: Have RV-8A QB Kit. Have completed Empennage and looking for assistance to complete Project. Does anybody know of any person(s) that do Builders Assistance in Southern California (preferably in the Los Angeles Area) ???? Appreciate any leads !!!! Thanks, Garey Wittich Santa Monica, CA (310) 392-1682 ________________________________ Message 9 _____________________________________ Time: 10:14:12 PM PST US From: Emmanuelle Richard Subject: RV-List: Stuff for sale 1) Janzi retrofit tailwheel steering link - replacement for the stock Van's chains and springs.About 20 hours on it. -So it's nearly new. -$100You can see a pic at: -http://tinyurl.com/ny95s3 2)-Aeroquip fittings-for fuel lines, used but in very good shape:-- 6 straight aluminum fittings-816-6D (3/8")-- 2 straight cad plated steel fittings-816-4 (1/4")With or without Aeroquip 701 hoses and fire sleeves .$150 http://tinyurl.com/m6rgvv ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv-list Browse Digests http://www.matronics.com/digest/rv-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.