McDonnell XP-67 "Moonbat"
- Thread starter leaded50
- Start date
cyclone3350
Master member
Scale props, scale flaps, retracts, and the "No way....that's foam board!?'" comments that I am sure U will get @ the field. Too cool .
leaded50
Legendary member
it should been some 4blade props... but havent found the ones i need. 8x 4-6" 4 blade prop also as CW/CCW is hard...Scale props, scale flaps, retracts, and the "No way....that's foam board!?'" comments that I am sure U will get @ the field. Too cool .
Retracts (electric servoless) get easy in place, if have reinforced the space for them.
The flaps here.. well could been done in epoxy reinforced foamboard.... for "easyness" i used that "plastic thing" i had, then no reinforcing was needed.
For sure, i expect to receive such comments
That looks incredible!
Would you take some pictures of the Flap mechanism you ended with, and the gear doors. you indicated it was a lot of trial and error, but it struck me as good to see what you settled on. or some details on the canopy?
Thanks.
I cannot wait to see this in the air.
Thanks.
I cannot wait to see this in the air.
leaded50
Legendary member
i will. The flaps is ok and working... the rear geardoors i have some problems with, started change mechanism to get it better functional
Wildthing
Legendary member
Plus being a twin it should just cruise with ease.
leaded50
Legendary member
the pictures, and light at moment doesnt show good enough paint. Main color is Antrasit grey, with silver fogging at bottom, and minor light "brownish" fogging at top. It shows better at angle , where gives a feeling of changing color hue..... Im satisfyed with the paint and build!
Minor "deflection" happend in some of the panels who was shaped both ways (dome - styled) it changed a bit back , and shows up a little close to the main spars.. its not much though... perhaps woudnt happend if even some formers more.
Weight though, would sacrifice by used more materials. its fully 1950grams with a 4000 mAh battery.....
The dual ZTW 2212 motors did gave enough punch though. total checked thrust at 2270g
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Matthewdupreez
Legendary member
magnificentView attachment 202013 View attachment 202014 View attachment 202015 View attachment 202016
the pictures, and light at moment doesnt show good enough paint. Main color is Antrasit grey, with silver fogging at bottom, and minor light "brownish" fogging at top. It shows better at angle , where gives a feeling of changing color hue..... Im satisfyed with the paint and build!
Minor "deflection" happend in some of the panels who was shaped both ways (dome - styled) it changed a bit back , and shows up a little close to the main spars.. its not much though... perhaps woudnt happend if even some formers more.
Weight though, would sacrifice by used more materials. its fully 1950grams with a 4000 mAh battery.....
cyclone3350
Master member
First taxi testing. one rear wheel hanged a little (an easy fix though) and gave turning direction... easier see a bigger front wheel would be nicer. Its in mail though
Thanks @leaded50. The pics U posted were just amazing. Seeing the video brings it to life. What I found impressive, was that perfect military sheen on that paint job.
leaded50
Legendary member
here you see flaps function. Its a servo down into fuselage that actuate a pushrod to the flap/airbrake.
Also retracts , and retract door function / setup. A spring from a writing pen adjusted to get the correct tension. Fastned in the door and to a screw on the retract leg. I tried get the function with mechanical rods, but either it slided on the wheel, loosing good enough movement, or retractdoor get stuck too the wheel shutting it from ended fully, if used mechanical rod father rearward to the retract leg.
The spring system was best function on. And as long the ends are closed, so cant "jump off" its nice.
Front retract steering, is by "push-pull" system with pushrods.
Well video got a small "coffebrake" in middle, needed change battery with enough voltage
here is also pictures of the steering system. When retract is closed, the pushrods disengage at the servohorns, "pushes" more back, and stoppers is not in contact with the servohorn. When retract is lowered, pushrods goes forward and engange the servohorns because the stoppers.
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Thank you VERY much. so the Rod with the stopper is held to the servo with a u-guide on each servo arm. then rod then extend back into the fuse, when the gear is retracted but when extended it stopper hits the arm and it is a pull-pull system connected to the collar for steering.... The Video and pictures are great!here you see flaps function. Its a servo down into fuselage that actuate a pushrod to the flap/airbrake.
Also retracts , and retract door function / setup. A spring from a writing pen adjusted to get the correct tension. Fastned in the door and to a screw on the retract leg. I tried get the function with mechanical rods, but either it slided on the wheel, loosing good enough movement, or retractdoor get stuck too the wheel shutting it from ended fully, if used mechanical rod father rearward to the retract leg.
The spring system was best function on. And as long the ends are closed, so cant "jump off" its nice.
Front retract steering, is by "push-pull" system with pushrods.
Well video got a small "coffebrake" in middle, needed change battery with enough voltage
here is also pictures of the steering system. When retract is closed, the pushrods disengage at the servohorns, "pushes" more back, and stoppers is not in contact with the servohorn. When retract is lowered, pushrods goes forward and engange the servohorns because the stoppers.
View attachment 202018
This plane is great. do you feel it is read for a maiden flight?
leaded50
Legendary member
Correct on functionality
Unsure when can do the maiden.... will try use some days to adjust stuff approx, and test it on ground first. All is dependable on what shape im in. Reason for building this now, was because i got "stuck" again on needed medicines, and then had times between pain attacks to do something.
Thanks for preciation of the build !
