tonyslongez

Dave See if this helps, only difference is besides the complexity, I won't have a hudge mouth for an intake. The overall concept is the same. The ducting for the radiator is going behind the rear seat bulkhead I'm drawing that in 3d, when I finish I'll send it to you then you'll go OOOHHHH O.K. and the headache will magically disapear . Are you using E.E Cad for the PCB? Those things are tough to stare at I hope they pay you big bucks my friend. They must, your building an airplane

I'm glad yoou like that I had to get creative I had about three layups going all at once. Only thing is, it may be for not because the scoop for the gear goes right over the airbrake. I think that when I drop the gear and the air hits that big bulkhead back there I'll slow down plenty. I'll be posting that firewall to the Ez.org guys tonight trying to finish some landing gear details now I know why plans cost so much money drawing this stuff is hard work on the eyeballs

I couldn't agree more. I have seen video of that very same scinario. the glass actually broke the carbons back. The realease of energy was awesome.

Dave check out my project at www.myairplane.com upper left hand corner click on construction log scroll down to Tonyslongez I was keeping it under raps untill my project was out of the "ugly duckling stage" this will give you an idea of where I'm going with all of this. Some of the pics are a little older. I have since changed my nose to blue foam and incorporated the E-Cobb method. I haven't glassed the nose in yet, the reason is, I'm designing a really cool stearable nose gear this one is going to blow you out of the water really simple. Trunions are in fact machined out of 7075 fortal billet Al, the side casting are as well. I may change the side casting slightly to give me one more mounting shoulder. The new shoulder would allow me to attach the side casting to a bulkhead at the bottom of the fuselage, this would complete the "box" that hold the retracts to the fuse. I'll draw it for you and see if you agree. give me a day or two. -Tony

Tes111 You are asking for a whole lot of problems if you change your spar to carbon fiber. I wanted to do the same thing to my Long EZ initially when I started building. The big problem that you will soon find out from your friends at Ga Tech is, it's not the carbon fiber that is the problem it's the host of problems it creates. for instance, you are going to change your flutter Coefficient substantially. You will have to do a completely new flutter analysis this is going to take months and your aileron weights and possibly the design will change. you'll need to know what those numbers are going to be and you'll need to know how to interperet them. Carbon fiber is not the end all be all that alot of people think it is, for the Berkut it worked because it was designed that way. Carbon only stretches about 3% where our fiberglass is more of 8-10% you could potentially do some very bad things to your airplane if you don't understand everything that is happening when you mix carbon with fiberglass. Not trying to burst your bubble here but you will need a complete finite analysis and FEA model to compute those flutter issues and you will have flutter issues with out it. if your concerned about strength a better solution may be a well placed bulkhead. Tony

Dave I have some more of the Long Ez drawn. I just haven't posted them yet. I want to finalize my measurements to make sure I did it right. Sometimes it's hard to read that ruler at midnight, so I have to stop myself and start the next day. Yes The gear will fold forward like a 172 However unlike a 172 gear which, I initially tried to use. My retraction is only 90 degrees unlike the 172 gear which is 180 degrees. My trunion is much stronger than the 172. You are right the gear will be located in the same area as the stock bow. So far as I can tell the Grove gear will be slightly stiffer but that will increase my ATOG. The final numbers are not done yet. My base is 62"in tire center to center at 50 degrees leg orientation to the fuselage of course I can increase this by increasing the angle of the leg relative to the fuse which will now give me a longer leg and decrease landing load K? but will increase my moment arm so I have to be carefull not to rip my retract box out. I think that is right. I'm following Pazmany's book on landing gear design I'll have to look at the actuall numbers. here is some more pics of my gear. Tony

Dave Great Idea to model the CFD of the Long Ez I don't have that ability My buddy is the Chief composite engineer at General Atomics who has that capability but he uses a super computer to run it. Really neat. So you'll post a sort of a "frame" of the mod that is requested? I'm guessing as to the terminology. Is it like Autodesk Animator? from some of the software I have seen you seem to have more control than Autodesk. I have some pics here Dave, have you seen these? Also this is what I'm working on for my long Ez R/G the drawings are very crude at this point but you'll get the idea. the scoop acts much like an f-16 style scoop gear retract forward and gear doors close around them to finish the scoop. Gear legs are from Grove. Cooling air is routed through the legs and into the radiator located behind the firewall. I'm using an exhaust diffuser which will eliminate any overheating during long taxis. What do you think? To dragy? Tony

Glad you like them Spodman I was in your neck of woods a few years ago went to the usuall tourist places, Bondi, Manly, Harbor. Didn't meet to many Ausies thought. lots of Kiwi and Englanders the English where A-holes. Hoping to go back next year with my wife. Getting pretty warm over there now. Maybe Brisbane this time around. Tony

That would be pretty cool have all the best modifications drawn to scale and use the plans as a "guide" to the modification. Say "14-2 insert drawing 3 here will give you this mod". Yeah! that would be cool. Heck don't stop at the Long Ez might as well throw the cozy in there. I don't know the mods that the cozy guys have come up with but I bet someone out there wants something better than stock. Jon might know. I'll draw what I can But I need dimensions for every part of the modification. Maybe we can get Avery over at Ez.org to make a special section for mods. I think we need to keep the format strictly autocad. you can't print drawings accurately using Adobe. Tony

That's great news Dave in the end we'll have an Ez.org canard when your done I would like to see your Fea model. I'll try to get to those gear drawings next week I think though we need to make everyone understand these don't substitute for plans they go hand and hand with them you agree? Tony

My long Ez is LOOOOONNNNNNGGGGGGG as well 6in longer, and 4in wider front seat bulkhead and 2in on the back seat bulkhead, and longer nose. lots of room to walk around I have the drawings on the ez.org web site of the mods check them out if your not to far along building you can incorporate some of those mods. only stretch your fuse if you are using a larger engine. wider is O.k.. Longer, you'll need some weight in the back. Tony

You bet, I was glad to do it. When I have some time I will work on the landing gear portion of the plans. Tony

Jon I can go back and measure those drawings to the 32 I'll need my magnifying glass though . or, I can have autocad convert the measurements and rescale the drawings to the tighter dimensions. But in your honest opinion do you really think anyone can hold a 1/32 tolerance while building? I think a 1/6 is far easier to hold a tolerance than a 1/32. I want people to use these drawings but I can't make everyone happy. We need to figure out what tolerances everyone wants and go from there. I don't have alot of time for this kinda thing. I'm just real busy. Not trying to be sarcastic. Tony

Spodman The reason for the fractions instead of the decimal is that I simply rounded the dimensions for the long nose modification to the nearest 1/16 have you tried counting 59/64ths you practically need the hubble telescope to measure that with a ruler then we mark it with a felt tip permanent marker god knows how many 64ths that is? then certainly adding insult to my eyeballs I'm going to cut the foam with a hacksaw are you kidding me? We're not building a swiss watch here. I drew those cad files in fractions so that it would be easier to read your ruler and still keep the tolerances as Burt intended. I sent the drawings to Ez.org in PdF and DXF format in fractions and also in decimals. I still rounded the dimensions to the nearest 1/16 . which 99.9% of the time was less than a 1/32 I'm not sure anyone ever realized that. Glad you like them Tony