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JayW

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Everything posted by JayW

  1. JayW
    Oh Craig - that made me laugh. So you know! Heavily invested parts have gone to the trash bin over the years I have been using that lathe, due to that simple mistake and some more also, leaving a slobbering upset modeler to start over again!
  2. JayW
    Ok the "intermediate rear crankcase": Similar to the intermediate stage supercharger section already described, this piece started out as a lathe turning, and then a bunch of plastic add-ons. I don't have any early-on pictures as they are so similar to what I already described. But here are some pics of the basically finished part: The large white flat area is where the "rear crankcase" will be mounted. The round white flats are for mounting of the aux stage air exit ducts. Wahoo! And attached to the intermed
  3. JayW
    Chuck - as a great fan of gear and wheel well work, I offer my congratulations for a fine effort. I would have thought this kit and its tooling were designed and manufactured from computer modelling software. Which would have better assured great fit. I guess not!
  4. JayW
    And now I get to show you the biggest folly I have committed yet on the R-2800 project - the carburetor. Why did I spend two weeks on a component that is going to be practically unseen? Well - part of the reason is that when I finish this engine, I intend to display it on it's own for a while, as I do other things for the Corsair like the cockpit or the wings, or the cowl. And partly because R-2800's had big bad-a__ carburetors, and it would just be neat to do one. Pretty weak.... The R-2800 had many variations, and part of those variations were the carburetor. "A" and "B" ser
  5. JayW
    I decided to do the back sections of the engine at this time. I am not sure I have seen anyone model these details, because they are normally hidden. Not so for this model (I hope) - as the engine accessory compartment is going to be openable if I can pull it off. Boy, there are untold variations of the R-2800 even if you ignore the modernized "C" versions. The Corsair had a "B" version which looks very similar to the "A" version which was the original. R-2800's had a single stage two speed supercharger as standard. I think most R-2800 equipped aircraft had this. The Thunde
  6. JayW
    Wow Chuck - you got skills. This Tempest is going to be bad ass!
  7. JayW
    All R-2800's are attached to the airplane via a truss supported ring, and six vibration absorbing "Lord" mounts. The Corsair is no exception. Here is the Vought/Sikorsky drawing of the engine mount for the F4U-1 and 1A: I have made the ring; the truss behind it will come later, maybe much later. And that only if all continues to go well with my plan to have an openable engine compartment aft of the cowl flaps. That is not certain at this point. You may notice in the picture above that there are six mounting points on the ring - four above the horizontal centerline
  8. JayW
    Exhaust stacks are basically finished except final top coat of paint. That will be down the road a bit. Here: While the stacks are not perfect, they are better than what I expected. They are only temp installed onto the engine, and every time I take them off and put them back on, the orientation of the six scarfed ends seems to change a bit. You got it Craig. Not sure, but I highly suspect copper or brass tubing would have been stiffer. Even what I used (annealed aluminum and silver solder) was pretty stif
  9. JayW
    Work progresses on the exhaust stacks. Or manifolds, or pipes, or as Vought called them "collectors". I have a tiger by the tail with these parts, as expected. But I have some pretty decent results that I am kind of excited about. The locating fixture I showed last post has worked quite well. I can attach it to the front of the fuselage with masking tape, and I can leave the engine the heck alone so I don't break it. Here it is with alot more parts: The fixture's port locations are pretty close to the ports on the back of the engine's cyli
  10. JayW
    Well let me modify my statement about the Mustang by limiting it to the category of prop-driven aircraft. When it comes to jets, well Katie bar the door! Some of the relatively recent Soviet jets are high on my list of sex appeal. The Sabre - an interesting pick but a good one. It's beautiful. And, coincidentally or not, it was created by North American the same producer of the Mustang. And one can see the family resemblances. Looks to me like a combination of a P-51 and a ME-262 and historically that is not far from the truth. Bombers - Maybe the North American Aviation des
  11. JayW
    I am not sure I have ever heard anyone suggest that the CH-47 Chinook is a "good looking" aircraft. Unless I extended your observation too far! Now the B-17, there is a good looking aircraft in an ancient sort of way. The D-model Mustang? Perhaps the best looking aircraft of all time - I am one of many who think that.
  12. JayW
    NZ??? Can I move there? I understand there is practically no covid there..... and I looove big glaciated mountains. Chinook? What is your experience with the Chinook? When I graduated engineering school (1974) I went to work in Ridley Park Pennsylvania, USA at the Boeing Vertol Helicopter plant, which at the time was churning out CH-47C's. I started out in liaison engineering right in the plant, where I became very familiar with the Chinook and also the Ch-46 Sea Knight, which was ending its production run. Later I transferred into design engineering and spent time on the tr
  13. JayW
    I have quit stalling and have begun work on the exhaust stacks. Lots of trepidation, but geez - it's a model; it's supposed to be fun. My plan is to use a combination of .125 inch diameter aluminum tube and also .125 inch diameter solder. If perfectly to scale the diameters would be about .14 inch. But I could not find material that size that would suit this application. I will use the solder where I can because it is easier to bend and form. The aluminum tube will be used for the lower portions of the stacks where they exit the fuselage and the ends are exposed. The stacks
  14. JayW
    Chuck - just happened onto this build (because I like the Typhoon/Tempest airplanes). Just effin' cool what you are doing. Following.
  15. JayW
    Thank you Craig - no the pipes are going to be the biggest challenge yet. Sometimes I get surprised, both ways, but usually I can get a feel for what is straight forward, and what is problematic. The pipes are definitely going to be problematic. The exhaust pipes for the Thunderbolt, which you may recall, were easier. One, the ends of the pipes are unseen largely, instead travelling back inside the fuselage to the turbocharger. And two, they collected into a large diameter pipe, one per side. The Corsair will have three pipes per side each one nestled next to one another, with a distinct
  16. JayW
    Cotter pins through the axle caps? That is just showing off Peter. Hey - some of the pics show the tail wheel half off or something. That thing alright? Very fragile component of these models.
  17. JayW
    Well you made us wait for it. It's the most realistic airplane model i have ever seen. The craftsmanship passes the microscope test - close-ups are just as impressive as far away. That's hard to do. Congratulations. You will receive trophies.
  18. JayW
    OK, the prop governor (Hamilton Standard 4G10 series) . Amazingly little technical data around, although I found a manual with parts lists for Hamilton Standard constant speed prop governors at Aircorps Library. It has pictures like this: Note the big pulley wheel - that is meant to be rotated by a cable attachment emanating from the cockpit, and it changes prop pitch depending on the rotation. The manual speaks of single capacity and double capacity governors, which look a bit different. Also there is a variety of bases that the governor is mounted on. Lastly it
  19. JayW
    The Bendix-Scintilla DF18LN magneto, used on the Corsair (there also is a Bosch magneto that seems less common) is a complicated little bugger. And it is hard to find good pictures or drawings. I did find this though: This comes from a R-2800 "operators Manual" I found at Aircorps Library. This provided alot of good scaling at least for the side view. I also found a magneto on E-bay with some good photos like this: This plus other photos of R-2800's gave me enough to go on. So a ten-times size (10/18 to be sure) layout, and just short of
  20. JayW
    I have progress to show you, actually quite a bit. The spark plug wire harness is finished with all 36 wires routed, painted, ready to go. With that, the forward row inter ear deflectors were installed. And, this was the time when the forward and back row cylinders and crank case halves were bonded together, and the front reduction gear housing was bonded in place as well. I managed to make every mistake in the book along the way, perhaps the worst of which was to paint a 5 foot length of .025 inch silver solder (for the spark plug wires) primer plus gold before hand. I thought I'd be sly
  21. JayW
    How far do you want to go? Aircorps library (google it) has on line drawings from the manufacturer, some complete, some not so much. The P-47 collection is like 99% complete. It's amazing. But I am not sure you want to get into the nitty gritty detail. And if you have no engineering background, it may be difficult to read the drawings and follow the drawing tree, etc. Also there is a nominal cost to subscribe.
  22. JayW
    There is a very good picture of a R2800-8 (the Corsair specific version) in the Dana Bell F4U pictorial volume 2 that I am making good use of: I like her shoes; I had some in high school! I thought I would show you the reduction gear case at completion, except the emblem, and the magneto and prop governor which both come later. I feel like this time I got the shape of the case just about right. I spent all day with the underside - the scavenge oil pump, and the outlet for the aft oil drain pipe. The scavenge pump is
  23. JayW
    Paul - well said.
  24. JayW
    Just when you thought you had everything, here is what I found on Vought-Sikorsky drawing 10275 (F4U-1): Dimensions are from axle centerline to fuselage center of thrust - Extend - 6' 11" Compressed - 6' 1" "Taxiing" - 6' 3 1/2 " I think the assumption can be made that "taxiing" represents under full gross weight. So that means extension at taxi is 2.5 inches under full gross weight. One could always add a little more to depict an aircraft that was lighter. Just like we see way to many times, modelling manufacturers will go research a static ai
  25. JayW
    Dude - how about the "pre-imminent democracy on the planet" USA? We've got ya' beat I believe. Not getting into politics mind you. Something that I have been cogitating on lately is how something like this can become so political, at least in the USA. I have some theories (or better - hypotheses), but it still bewilders me that the response to this pandemic is so different depending (usually) on one's political identity.
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