Hi Larry, Thanks for that comprehensive overview. It was very helpful.
Cheers, Tony On 3 July 2014 07:21, Flesner via KRnet <krnet at list.krnet.org> wrote: > > > > > Could someone tell me the angle of the Diehl main gear brakets? I >> intend to make my own. I also remember a post regarding composite legs >> that some of you had used. Any idea if they might still be available ? ps >> at what position are the mounting brackets attached to the main spar? >> Thanks Mark >> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > ++++++++++++++++++++++++++++ > >> You can find the fiberglass legs on eBay. Aviation parts/ Grumman tiger >> undrilled. Contact me direct and ill sen you photos of my setup with PDFs >> of drawings. I'm also using the legs cut down for the front gear. >> Dprich01 at comcast.net >> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > The Diehl upper brackets are mounted to the spar with the leg angled at 45 > degrees. The lower bracket is also 45 degrees. If you want to increase > the camber a bit I'd suggest you modify the lower fitting a bit to the > angle you want. I went with 45 / 45 and it has worked out well for me. > The Grumman gear legs are made of the same material as the Diehl legs but > are slightly thicker and wider. You will have to modify them a bit to get > similar results, i.e., cut a bit narrower or run through a planner to > modify the thickness. Some builders make upper gear brackets using 1/8" > steel plate. I added about 1/8" of fiberglass to my 30 inch legs for a bit > more stiffness. If you use the Grumman legs with more than 24" length I'd > suggest leaving them a bit thicker than the 24" Diehl leg. With my 24" > fuselage stretch I needed longer legs to get the correct 3 point stance. > > https://dl.dropboxusercontent.com/u/32133949/IMG_8669.JPG > > I made my lower brackets using a piece of 2"X6"X1/4" 4130 steel plate. I > cut through the plate at center going about 3/4 of the way through the > metal. I bent the plate at the cut to 45 degrees with the cut on the > outside. I had a gusset welled to the inside and had the cut welded shut > and then sanded the weld to a nice radius. I think the Diehl lower bracket > is 2 1/2 inches wide. http://myplace.frontier.com/~flesner/21.jpg > > Diehl instructions say to mount the upper brackets next to the fuselage. > I moved my brackets outboard 4 to 6 inches on each side for a slightly > wider gear stance. That and 30 inch legs instead of the Diehl 24 inch legs > give me a nice 8 foot wide gear track. > > There is much discussion about "toe-in, toe-out". I set my track at zero > / zero and love the ground handling and I get zero tire side ware. I also > run a slightly lower tire pressure (25 pounds) than some and my tires seem > to last forever. On an annual once I found them both to have deflated to > 15 pounds each. They still looked and performed perfectly normal although > I'd not recommend running them below the 25 pound range if possible or > unusual side loads might cause a problem. Keep the aircraft aligned with > the direction of travel when on the ground and that won't be an issue. :-) > 500+ hours and still wearing the KR grin........ > > Larry Flesner > > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
