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Greg Davis

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Posts posted by Greg Davis

  1. I am now done smoothing the hull. In the previous post, I had smoothed the hull as best possible with paper as fine as 180 grit. I've now gone over the planking with 220 grit sandpaper - this is the finest that I will be using. Here's the starboard side again; not sure if there is any visual difference, but it is now glassy smooth to the touch.

    StarboardPlankingSmoothedEvenMore.jpg.500d6f24718bb0166877cd1a68fc0217.jpg

    One final picture at this stage of the planking from the bottom / aft looking forward.

    SecondPlankingSmoothedandFinished.jpg.7b6ab4fe210c60471cbefe0743af3201.jpg

    I believe the next step will be some painting. I no longer like the current interior red I had chosen. Now I'd like it to be a deeper darker shade. I also need to make some decisions on the amount of coloring that will be used on the exterior. I think that there will be some exterior paint, but not anywhere near the amount shown on the model as presented in the kit. In my mind the planking looks too nice to cover up with paint.

  2. Completed the starboard planking this evening.

    StarboardPlankingFinished.jpg.b8759e09db5aa3376944165b63a36415.jpg

    Everything worked out well - same number of planks on each side!

    SecondPlankingCompleted.jpg.a6466ff2435006284f9ced6ae6476046.jpg 

    Hopefully there will be some nice weather coming this week so that I can sit outside and sand the planking smooth. I prefer to do the major sanding out of the house and with the wind at my back! I don't think it will take very long as I was able to lay the 1mm x 4mm x 80mm planks quite tight to the hull. I would have preferred for the material to be a little more uniform in color; however, the variation is much less noticeable to my eye than it is in the photographs.  

  3. On 3/29/2024 at 3:11 PM, Egilman said:

    Beautiful job on the original configuration of the 14-Bis... So many kits of this built, but no real research into what it actually was when first built...

     

    This has it all....

     

    VERY NICE!!!!!

    Thank you very much for the compliments and all the posts that you made thru the building, they really helped me think about how the project would unfold.

     

    For a machine with such a short 'life', it sure had quite a few configurations. I think that what came out of the build was the middle of the variants - the shortened propeller mount, but not the ailerons. It's certainly not a perfect piece of work and I hope others will see my modeling shortcomings and perhaps get closer to the 'perfect' miniature. Actually, it might make a really good scratch build project, short of the engine most of the build could be accomplished without a great deal of trouble just having the plans. On the other hand, I saw Model Expo selling the model for $99 recently which is not bad for anyone to give it a try!

  4. Today's main task was getting the tail support in place. I got the bamboo supports glued and tied in place. Took a little thinking on how I might clamp the lower ends together in preparation for the skid. Finally placed a washer over the two pieces to hold them in place. They were spot glued with CA. After it was dry, I cut a half round into the joint for the skid to sit in. The kit supplies brass wire for the skid. I think the brass wire is not stiff enough to hold the plane up nicely over time. So I have substituted piano wire for the piece. It is spot glued as of this picture. Next it will be wrapped, along with the lower portion of the bamboo, with thread. Once that is done, A small amount of rigging will be added to support the entire assembly.

     

    TailSkid.jpg.d1b6449369d0c6389b504a0c381813df.jpg

  5. 9 hours ago, George Ramey said:

    I've also had a fail at the fuel tank installation, so much that in repeated attempts I've broken the mounts a couple of times such that after repeated repairs they are to weak to support the tank. Just finished making replacement parts so I'll try your method of installation which makes more sense. Agree with your assessment of the mounts material; the thin plywood seems a poor choice. I'll miss your reports as you finish your model as you have saved me some pitfalls I might have fallen into. Got a display location yet? I've got to relocate my build to my kitchen table when I get to the wing installation as my workbench is too small and more suited to peanut and walnut scale aircraft.

    George -

     

    While plywood doesn't have as much grain problems as if they made them from basswood, they are still more fragile than I like. If the mounts break again, consider remaking them from some styrene. One of the problems I faced installing the mounts at first was that I failed to angle them in enough. But after playing with the brass straps, I think that getting the straps on first is the way to go. Did you notice that the kit supplied mounts have notches for the brass straps - but they seem to have been made on the top of the mounts instead of the bottom (where I think they should have been)?

    FuelTankMount.jpg.ac9899c20a37ac391533a43b8e8adc7d.jpg

    I've got the display down to two possible locations in my workroom - either on the wall behind my computer desk or hanging in one of the corners of the room. My wife says there is a corner of the family room that it could go in if I want!

     

    As soon as the wings were attached, the model got BIG. I am also having some issues with the final assembly because of that.

     

    If I happen to get done before you, feel free to continue to post questions. I'll be checking periodically. Otherwise, you can just message me via MSW.

     

    Greg

  6. I've just added the fuel tank and fuel line to the engine. Getting the tank in place was harder than expected. At first I attached the mounts to the plane and then attempted to add the tank - this was a fail. I took the mounts off, wrapped the tank and mounts with the brass straps and then put the whole structure in place - this eventually worked out for me. The fuel line was then added to finish this portion of the build. I think it would have been just as easy (and more realistic) to have formed the tank supports from wire and/or had them supplied as castings. I've also added the radiators, the propeller, and the upper wing middle rib. 

    FuelTankInstalled.jpg.f6204228dbc6a85b06e542f5fdf30675.jpg

    I believe that all that is left now is the landing gear - the wheels, the tail skid, and the wing skids.

  7. Yesterday I added numerous pieces of photo-etched brass to the wings. These pieces form anchor points for the bracing lines. Unfortunately, these pieces are not noted in the instruction booklet (they should have been noted on p32 within the 'Metal Parts List') nor are they drawn in the master plan. If you look carefully at the photos on Model Expo you will be able to find a few of them! There are 12 on each wing. They get bent over the wing panels as close to the inside of spars that can be achieved. At first I had some issue with bending them so the two holes would align. I solved the problem by making a starting bend of the piece, putting them over the appropriate rib, pushing a short piece of music wire through the holes to align them, and then pulling the ends together with pliers. 

     

    AnchorBracketsforWingBracing.jpg.226dbd5d8a312dafb293ab1d19457be8.jpg

    WingBracingAnchor.jpg.dd96d5a5755cbfcb22974fa6e618a9f2.jpg

     

    Today I spent time getting a good start on the wing bracing. I was able to do all the bracing on the left wing.

    LeftWingBracingComplete.jpg.0deaf577e61ef6732ebe052787abb671.jpg

    If I keep focused on this project, it should be done soon. The remaining to-do list is just a handful of (hopefully straightforward tasks):

    • Right wing bracing
    • Wing landing skids and bracing
    • Tail support skid and bracing
    • Attach wheels
    • Fuel tank and fuel line
    • Radiators
    • Propeller

    I've made a final decision to not include ailerons on my model. 

  8. On 3/2/2024 at 2:20 PM, Denideul said:

    found out  a document (in french) explaining that N18 was originaly the first part of a hydroplane that should have been completed with a wing.

    But the wing manufacturer named "Voisin" never delivered the wing.

    Thank you for providing this link. I am grateful for your interest in the craft and willingness to share. However, I am not sure of the information presented in the document - I really wish that there had been references included. My comments below are not meant to discredit, but to critically question the translation (I don't read French either!) in light of other information that I have gathered. 

     

    I have not run across other information noting any collaboration with Voison, I believe that they were actually competitors. As translations can sometimes go astray, I wonder if some comparison was being made to Voison's 1905 glider that was (like the No 18 during testing) pulled by a racing motor boat on the Seine. 

     

    I am still looking for additional sources that would validate 'three floats built by Lachambre'. My impression, from the sources that I have read, imply that work on his crafts were done by a group of builders / mechanics that were long-term hires by Santos-Dumont.

    2143743751_b15345bd40_c.jpg.6c860e4d712fb0de843d4a6c4e1e685d.jpg

    There are not many contemporary written in English about the No18, but here are a couple printed in Scientific American from October 1907. In neither case is the No 18 portrayed as a plane; it is clearly portrayed as a boat. The 'driver' is described as helmsman - a term typically used for the person controlling a ship or boat. The hydrofoils are referred to as wings - perhaps that is what wings in the translation refer to.

    Screenshot2024-03-04183753.jpg.3244e62f88563442f391fdb7b6e272a0.jpg

    Screenshot2024-03-04183708.thumb.jpg.4eebf2295cabb3e7ff5e87e623832ab9.jpg

    I certainly will not forget what you have shared and should I find evidence in support of the translation I will immediately pass it on.

     

    Thanks again,

     

    Greg 

     

     

  9. 19 hours ago, Egilman said:

    Has some very detailed views of the rigging and the control system.....

     

    What I saw was a wire connected from the top wing to the aileron with a shrouded spring connected to the bottom wing... The cable runs vertical to the wing through a sheave then along the wing surface through guides to a point almost at the pilots position where it is connected to the ropes that the pilot looped over his shoulders....

    Do you think that this is true to the prototype or a more modern control solution? Before watching this video, I had conjectured that the original ailerons were connected to two cables opposed to one cable and a spring. 

  10. 4 hours ago, George Ramey said:

    Greg,

    Ref Instruction page 36: can't seem to locate Tank supports Ta1 and Ta2. Are they wood, metal? Also Radiator Rad 1 and Rad 2 I don't seem to have. Can you take a photo of these so I can possibly reproduce them? Pretty much finished off the basic fuselage structure and rigging and will attack the canard controls next. I think I'll hold off on the landing gear apparatus until the very end.

    On your complaint about the wheel tire combination; I wonder why more manufacturers don't just make wheels and use O-rings as tires. Would save carefully painting tires separate from the wheels. I've already painted my tires and already have hangar rash on the paint. I'm going to try Plasti-Dip rubber coating used for dipping tool handles next. That may be a bit more durable and the color is right

    George -

     

    The tank supports and the radiators are laser cut on the same sheet of wood that the canard support attachments to the fuselage were - since you have the supports Sup1 and Sup 2 on your model, I'm sure you have the other parts. 

    TankSupportsandRadiators.jpg.b7c8aa901aa85a914e936ca8cf2601d2.jpg

    For me, the laser cutting of the radiators is a highpoint of the kit - I'm just hoping I can release them from the sheet without damage.

  11. 1 hour ago, George Ramey said:

    Been trying to figure out how the ailerons are supposed to be operated.

    I have not seen a picture and / or diagram depicting the aileron control system. Like you, all that I have found is the verbal description of lines being connected to his coat and body movement would then translate into aileron movement. If I do locate additional information I will share!

  12. I used single strips of wood for the first three strakes below the sheer. This area of the ship will be pierced by a large number of holes - gun ports and oar ports. There will also be two half round moldings added to this section. Because of all the additions (and subtractions) I thought the planking would hold up better with a minimal number of butt joints in the region. Also, with the 'business' of this region, the joints will likely not be missed from a visual perspective.

     

    Now moving down the hull, I've marked out two planking belts. Each will accommodate 9 strakes. These are being set in with 8cm long planks. Typical strakes will have 5 planks each of the 4mm wide planking material provided in the kit. The supplied wood is quite nice, a great feature of the kit.

    PlankingContinues.thumb.JPG.b60c58c6662fdc9e8a33a0bffaf84787.JPG 

  13. 15 minutes ago, Egilman said:

    I believe his stopping work was a major loss to science....

    By 1910 (in his mid-thirties) SD's health was starting to fail, symptoms and then diagnosis of multiple sclerosis - Its also suspected that SD suffered from bipolar disorder. The last 20 years of his life don't seem to have been particularly good ones. Its clear he had a level of regret that planes were so quickly weaponized. If times and his health had been better, I expect he would have continued his exception line of applied research. Very sad as to how he went from such great highs in the early 1900's to committing suicide in 1932.

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