#31
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Interesting P-47 video
A very interesting link from the latest AEHS newsletter about field assembling a P-47:
How to assemble a P-47 Thunderbolt Fighter in a field with unpowered hand tools (Restored -1944) - YouTube I easily forget that aircraft in WWII did not fly direct from the factory to the battle field - they had to be assembled in the field by regular guys using only a manual and hand tools. Some views of the engine at about the 11:00 mark. Some great engineering in the P-47 - even greater engineering went into making it easily assembled and repaired in the field. Regards, John |
#32
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Quote:
However that radiator actually produced thrust in that location. P51 was a great fighter. However my favorite is the P38 Lightning, then the P47 next. P38 was an amazing aircraft, flying before the USA entered the war. Could carry almost as much bomb weight as a B17 (although on a much reduced combat radius), out turn almost any fighter in WWII down low, even though it was bigger. The top two leading aces for the USA both flew P38's. It's endurance was incredible. The main reason why it's my favorite? Kelly Johnson Dave, I'm watching with anticipation-this is going to be awesome! Mike |
#33
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USAF Wright-Patterson R2800 Photos
Quote:
I'll look through the photos of my recent visit to the museum. They had plenty of Wright engines but very few Pratt & Whitney's. Your cylinder head is awesome, I gave up on doing mine to scale and simplified it to rectangle rocker arm box. Check your email for photos, only three would load first email-25mb max. These have not been altered so big size mb so you can zoom in if need be. Second email will have two more-last one is main reason why I flew down for the visit. Might help explain why I only took 4-photos of the R2800,also It-was in bad lighting and set back well away from barrier, couldn't get very close and one whole side was inaccessible. Rear could only be seen at a steep angle. The first email is still loading. I'll send it asap once attached. Here are the photos the email will bring: The table like display box in the first photo stopped any direct behind photos, the last photo was taken leaning over the corner of it to get a square shot at the carb. Oh, a few hours after these were taken I got to experience my first tornado alert. Two of them went by kind'a close. Mike
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Cardstock Property Tables and Terms Flying Cardstock Models http://www.papermodelers.com/forum/m...uers-projects/ Last edited by mbauer; 12-04-2021 at 12:14 AM. Reason: tornados |
#34
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They have a R1340 Parts book for $41. Signing up to get their discounts, lots of interesting stuff won't have to look for in the future! Mike |
#35
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Mike, glad you like the source.
Tappi |
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#36
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Without trying to sound ungrateful, all these photos and videos aren't helping...LOL...but I do appreciate the effort.
I actually have a large folder of reference images that I keep referring to and have scoured a lot of the internet finding the same stuff. My issues are the number of variants in the R2800 design over its history. Many visual differences. Small changes in cylinder head shape and pattern... and differences because of application (aircraft type). And the lack of multi-angle close up views of specific areas. Most photos on the web are generic photos of an engine on display. Unfortunately those arent helping a scale paper model designer. I also need to design something that can be created within the limits of paper construction and isn't impossible to build (which complicates things even further). As it turned out, I discovered that when I was in Washington A&S Museum, I took a number of closeup photos of an R2800 engine (for this purpose). I had forgotten all about them. But the engine is in a Corsair, and its a different variant from what I need! Thats partly why I settled on the R2800-21 (like the one sitting on the floor at the Dayton Museum). I know its a common P47 variant...and certain areas looked a little simpler to deal with. But every time I get some new photos...and try out a new pattern... I end up with something different again! lol I just finished the latest redesign of my cylinder head design.... this is probably number four or five... I have printed it ready to test build. But I realized this morning that I have gone way off track again with the the top of the cylinder head. While my paper pattern might work, its not anything like the USAF Museum R2800-21. So I may have to start from scratch again.
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#37
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This is my latest prototype.... based on an R2800 design shown in the P47 Technical manual. I'm really not liking the boxy design, but what else can I do? The engine is just too complicated with all its curves and vanes. But my bigger concern is the top of each cylinder, the upper covers and housings. Including the receivers for the Push Rod tubes, and the engine mounts. This is where I am really failing (with enough reference images). As I said to Mike this morning: My biggest problem is I am a paper model designer! LOL paper model design is a nightmare sometimes! Molding in plastic is a lot simpler. I have to make it work in paper (which means making it boxy). I have to make it buildable for mortals. And make it simple enough, so you don't mind building 18 of them!!!!! My first paper model design was based on this R2800 cylinder (below). One of the best photos I have showing the intricacies of the R2800 cylinder design... but alas, not anything like the R2800-21 (P47) variant). Yes, its a table lamp!
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#38
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I feel for you Dave but that boxy look will be pretty much hidden when you get all the other parts like covers, plates, pipes etc. on top of it. I'm eagerly waiting for this and I'm going to make a fan of it. ;-)
Tappi |
#39
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Actually, since I am terrible at committing to building 18 of the same thing, I just might make a 1:6 model of the table lamp .
Looking forward to progress on this project. John |
#40
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Still messing around with this project...
but its gonna be a long term project. I've redesigned the Cylinders a few times... and now I am experimenting with the valve covers and how the push rod tubes will connect. Trying to avoid more holes in things...for connecting and mounting things... like with the push rod tubes. I'm asking myself "does it look realistic enough? or too stylized?"
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