|Feb 06, 2014, 04:42 PM|
|Feb 20, 2014, 02:37 PM|
Port Elizabeth. South Africa
Joined Aug 2010
I plan on building one of these. In the beginning triangle balsa was used on the fuselage edges. Now the plans show a foam strip of 3/8 inch. Can I just use a strip of depron?
|Feb 20, 2014, 03:17 PM|
yes, just use strip Depron
Use 2x 3/8" Depron for the stringers or what ever your plan calls for
|Feb 20, 2014, 11:03 PM|
Yes, I originally used balsa triangle but later learned that a simple strip of Depron works better since it allows sanding the corners to a more rounded shape. Thus, all my later designs use Depron strips instead.
|Feb 25, 2014, 12:22 PM|
Joined Jan 2011
After lying on the shelf and catching the dust for many months my Eagle finally saw some progress in build in the last few days. There is still much work left to do, but slowly i'm getting to the point when I need to choose the motor. I will need your help with this, as this is my first pusher jet ever build and hopefully flown, so far I only build and flew sailplanes and Funbat.
My model in the current state of build (as seen on the pictures) weights 1230g (around 43,38oz). It is fully glassed fith KFM-3 airfoil. It is 150% version with 105cm wingspan.
I was planning to fit:
- 4x HXT900 servos (2x ailerons, 2x rudder)
- 2x Tower Pro MG90S metal servos (2x ailvators)
- 4S LiFe A123 2500mAh
- 40A Turnigy Plush ESC
This would give me aproximately 490g (17,28oz) to the weight of the plane. Then there are stil some parts that need to be glued and of course engine and finally some spackle and painting so I think that RTF weight will be somewhere around 2-2,2kg (70,54 - 77,6oz)
Here are my doubts:
1. What motor and prop would you suggest for it? I don't want it to be superfast, but I would like it to be capable of vertical (or at least steep) climb for short time (aileron roll while steep climbing is nice looking maneuver).
2. I am thinking about cutting the exhaust nozzles shorter to make them look more scale, I can easily fit 8" prop between the sides of the fuse so there should be no problem with mounting the motor more forward than it is in the plans. It should also help to screw up CG less. But maybe there are some cons of this solution that I'm not aware of? I have never seen such nozzles in this thread, maybe this is for a reason?
3. I'm not sure if 9g servos will do with the overall weight of the plane. And I mean especially those for ailvators.
I'm looking forward to your suggestions.
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