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    R 4360 Wasp Major

    Howdy folks, I am trying to find out how the crankcase came apart for a wasp major. The crankshaft was a one piece forging and the throws wouldn't clear the main bearing bores. So it looks like the crankcase came apart radially like the petals of a flower and I am trying to find any pics or...
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    Steel aircraft spar

    Thanks a ton for the replies, the Stinson is pretty unique with its welded steel tube wing structure. What about fighter jets? What are the Migs made out of?
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    Steel aircraft spar

    Hey guys, I am trying to find out if there have been aircrafts that used steel spars & so far it looks like the "Thrush" line of cropdusters are the only ones. Are there others out there? Any pictures of the spars? Is the construction similar to an aluminum wing (laminated angles and...
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    Martin Baker MB series aircraft construction

    Thanks for the links Cheapracer & Matt, I already have those pictures. Apparently the main wing spar is supposedly made from built up steel laminations that taper towards the wing tip but they look like regular aluminum extrusions. I don't know if they used steel strips riveted together like on...
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    Martin Baker MB series aircraft construction

    I have been scouring the internet for pictures of the MB series of aircrafts manufactured by Martin Baker. Does anyone happen to have pictures of the airframe, spars to be specific and the specially designed joints they used to connect the steel tubes. Also would anyone happen to have the patent...
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    Steel tube aircraft wing

    Have there ever been any homebuilts that were constructed in this manner from either steel or aluminum?
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    Steel tube aircraft wing

    Hello everyone, I happened to look at the wing structure of a Stinson Reliant and am curious as to how they were manufactured? The structure looked to be built out of welded steel tubing and are the ribs steel too? Are there any other aircrafts that were built in this manner and how did they...
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    New diesel engine

    Lo & behold ! http://www.launchpnt.com/portfolio/transportation/electromechanical-valve-actuator . Poppet valve two stroke without cams, rockers or anything else with infinite valve duration & phasing. Even the ability to run both 4 stroke & 2 stroke modes on the same engine...
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    Radial engine oil consumption

    Is the oil consumption on a radial engine high only because of poor scavenging from the crankcase? Have they been completely phased out or are there new designs being developed?
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    Aluminum foam composite construction

    Thanks a lot for the replies everyone! BoKu special thanks for taking the time for a detailed reply, your advice is well heeded although I am not sure if I can stop by at the shop. Thanks again guys!
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    Aluminum foam composite construction

    Pictsidhe, bonding for the Oratex will be done on the metal ribs. The metal ribs would be spaced throughout the span and the space in between would be taken up by the foam blocks. Heat resistant foam is available, that might alleviate the issue. BBerson, the Schweizer 1-35 wasn't fabric...
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    Aluminum foam composite construction

    Hello everyone, I was wondering if it was possible to use a building method for a wing where we can use aluminum as a "skeleton" for handling all the structural loads and foam blocks hot wired with the appropriate airfoil shape which would then be Fastened to the "skeleton". I envision upper and...
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    Radial engine lubrication

    So did they use split roller bearings on the crank?
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    Radial engine lubrication

    Thanks for the link BJC but it shows just the circuit. I wanted to know if they used rolling element or plain bearings. http://www.enginehistory.org/P&W/R-4360/Image86.jpg in this pic how would they insert the crankshaft into the "Crank case" as the counterweights and throws wouldn't be able to...
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    Radial engine lubrication

    Can anyone help me understand how the lubrication system works in a radial engine. Specifically how are the master rods & crank lubricated. What takes the propeller thrust.
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