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Scratchbuild a Curtiss Hawk III (BF2C-1) in 1/4.5

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Old 09-30-2019, 07:53 AM
  #76  
FlyerInOKC
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Hi Thomas, I posted a link over in the Saito Club thread and they were very impressed by your exhaust system! These guys are constantly rebuilding Saitos and comparing performance and several are master machinists and you impressed them. I thought you might want to know.

Mike
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Old 11-02-2019, 12:42 PM
  #77  
thomasmuckus
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thank you Mike for your recommendation, it`s a real compliment.
After finishing the engine things, it`s time to start with the RC-equipment.
At first I`ve done the tail, starting with the tail wheel.
A friend of mine, owning a 3-d-printer made me the parts. I`ve done the metal work.

completed it looks so

now it`s added to the hull. I use a shockadsorber from an RC-car.

after that, I made the elevator push rod from carbon fiber

Elevator servo and rudder servo are done in place and the elevator push rod is installed.


.Now it`s time for the rudder linkage. The problem was, I could`nt connect the rudder ropes and the tailwheel ropes at the same linkage horn. So I had to build a linkage bridge.



the upper horn is for the rudder, in the middle is the horn for the tail wheel and the lower horn is for the push rod. I think the pics says moore than any words, the springs I`ve added into the tail wheel ropes protecting the rudder servo.







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Old 11-02-2019, 01:01 PM
  #78  
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I`m really happy about my bis service holes, they allow me to work with booth hands into the fuse.
When they are closed and the fairing is added it looks pretty nice doesn`t it?



the next step is the linkage for the ailerons. At first I had inmy minds to do this like the original, shown in post 15. But, afte any talks with some of my buddies, I decided
to drive the ails directly. So I removed the linkage and added small but powerful servos.

Now I made the hinges from "Novotex". It`s very strong and easy to handle.





After gluing thr hinges in its place I made the aileron horns. I used solid airkraft plywood, with 5 layers for this. For the push rod I used Sullivan`s ball connectors, that makes the building off and up on the airfield easier.


I`ll substitute the wooden pushrods to carbon fiber, I had to wait for delivery.
Not at all, the wooden rods are good enough to test the control surface, up and down.


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