---------------------------------------------------------- RV7-List Digest Archive --- Total Messages Posted Sun 06/14/09: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:53 PM - Bolt Hole Clearance - Elevator Horn (Garey Wittich) 2. 10:15 PM - Re: Bolt Hole Clearance - Elevator Horn (Joseph F. Giallo, II) ________________________________ Message 1 _____________________________________ Time: 08:53:36 PM PST US From: Garey Wittich Subject: RV7-List: Bolt Hole Clearance - Elevator Horn REF: -Regarding the 1/4 inch bolt holes in the Elevator Control Horns, ab out which the Left & Right Elevator Horns rotate on the center Hinge Bearin g fastened to the center of the Horiz Stabilizer. After drilling these 1/4 inch diameter holes (for the AN4 Bolt), these hole s are too close to the weld fillet that welds the torque tube to the perpen dicular part of the Horn. -The weld fillets on my L & R Horns go ALL the way around the Tube. Thus the AN4 Bolt HEAD and corresponding Nut HEAD will come in contact with the "weld fillet" BEFORE they are tightened. -- - After reading the "Archieves" for possible solutions and some of my own thoughts it seems the options are (looking for the BEST Option): 1) Die Grind the weld fillet in the area where the Bolt and Nut heads will be, then spot prime with Zinc Chromate. 2) -Grind the weld fillet where the Nut Head will be and then use a reduc ed size Nut (MS21042-4) that has a smaller diameter than the -one supplie d by Vans. 3) -Use regular AN960 Washers and "contour them" to fit over the weld fil let so Bolt Head and Nut fit snug against them. -(Will need a longer Bolt than supplied by Vans.) 4) -Make a "thick" washer out of stainless steel (i.e. 1/8" thick) and "c ontour it" to fit over the weld fillets; thus the Bolt and Nut heads have a flat surface to tighten against. -Again a longer Bolt will be required. -<----- Seems the BEST approach to me. - Any subtle issues involved ??? How did YOU handle this situation ??????? Appreciate your comments !!! Thanks, - Garey Wittich - Santa Monica, CA=0A=0A=0A ________________________________ Message 2 _____________________________________ Time: 10:15:34 PM PST US From: "Joseph F. Giallo, II" Subject: Re: RV7-List: Bolt Hole Clearance - Elevator Horn Garey, I think I would go with either 3 or 4 although I confess that I don't think I had this issue. Not to worry though, the rumor that Van's has actually produced two identical kits has never been proven..... Regards, Joe N813MJ 60+hrs Garey Wittich wrote: > REF: Regarding the 1/4 inch bolt holes in the Elevator Control Horns, > about which the Left & Right Elevator Horns rotate on the center Hinge > Bearing fastened to the center of the Horiz Stabilizer. > > After drilling these 1/4 inch diameter holes (for the AN4 Bolt), these > holes are too close to the weld fillet that welds the torque tube to > the perpendicular part of the Horn. The weld fillets on my L & R > Horns go ALL the way around the Tube. Thus the AN4 Bolt HEAD and > corresponding Nut HEAD will come in contact with the "weld fillet" > BEFORE they are tightened. > > After reading the "Archieves" for possible solutions and some of my > own thoughts it seems the options are (looking for the BEST Option): > > 1) Die Grind the weld fillet in the area where the Bolt and Nut heads > will be, then spot prime with Zinc Chromate. > > 2) Grind the weld fillet where the Nut Head will be and then use a > reduced size Nut (MS21042-4) that has a smaller diameter than the one > supplied by Vans. > > 3) Use regular AN960 Washers and "contour them" to fit over the weld > fillet so Bolt Head and Nut fit snug against them. (Will need a > longer Bolt than supplied by Vans.) > > 4) Make a "thick" washer out of stainless steel (i.e. 1/8" thick) and > "contour it" to fit over the weld fillets; thus the Bolt and Nut heads > have a flat surface to tighten against. Again a longer Bolt will be > required. <----- Seems the BEST approach to me. Any subtle issues > involved ??? > > How did YOU handle this situation ??????? > > Appreciate your comments !!! > > Thanks, Garey Wittich Santa Monica, CA > > >* > > >* > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv7-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV7-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/rv7-list Browse Digests http://www.matronics.com/digest/rv7-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.