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It was a modest night in the shop last night (Still working on my son's birthday present) but I built and sanded an entirely new center wing section because I had cut the previous one wrong. This one has the extension over the aft engine compartment while leaving the cutouts for the inboard elevons.
I fine sanded the tube fuselage and even went as far as cutting dummy yaw stabilizers so for the first time I can see her true overall length. As suspected, she is a beast! |
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Off topic but I'm looking here at this 64-mm EDF engine nacelle for an A-10.
Hmmm... How big would this B-47 Stratojet have to be??? ![]() ![]() ![]() |
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Got the outer wing panels cut and carved, sanded and taped in place so now at last I can see her full size! She dwarfs the 4 by 8-foot table she's sitting on. I only wish I had put her full foam mass on the scale before I packed up and went home tonight! Outer wings will be removable of course and I installed the carbon fiber rods which will fit into aluminum sleeves in the wing center section.
I think November is the month I will be spending money on the electronics. I also did a video tour which I you can see here!
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Dude thats awesome!
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Just got back from Motion and eBay where I picked up ESCs, servos, wires and motors for this beast (and a couple of other small planes).
Survived the first wave of $pending! Ready for November to be the month of electronics installation. ![]() |
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I got 2X E-flite Power 25 1250kv outrunners (I already have one).
I got 4 60amp ESCs (one for another project). (ZTW Mantis brand) (Also got a couple 45amp ESCs for other stuff) Got servos for the XB-70's cannard 'flaps', as well as every servo extension wire I'm gonna need. I'm putting 17 gram servos in the cannards and I will be using full standard-sized Futabas in the elevons. Also got a bunch of Y-harnesses for the servos. Gonna need some for other projects as well as this. Once the motors are all in I can install them and start working out how far I'm gonna have to put the batteries to balance this beast. FORTUNATELY, as the aircraft and empty weight get bigger, the relative size of the motors get smaller. So it's a little like having a 5-foot long airplane with some tiny beater motors in the tail. As Brent was saying it may not be as hard as I thought to balance this aircraft. ![]() Holding my breath next for the landing gear. If I get them from JP they may cost more than all the stuff I bought today. |
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On my one-month anniversary of the last post, I've got a big night ahead in the shop. Attaching all the major wing/fuselage sections and cutting the removable forward (tube) fuselage. I also need to cut the hatches in the top of the wing for ESC access.
Hopefully by next week we've got motors and ESCs installed! |
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Good news!
Got some good news on weight. With the airframe built (minus cannards and vertical tails) I was able to put her on the scale to see where we're falling.
With main airframe, 3 power 25 motors, 3 ESCs and two big 4s lipos, we're coming in at a scant 12 pounds. ![]() Left to weigh: -Landing gear - plywood for landing gear -plywood for motors -mounting braces for the removable neck fuselage =cannards -twin tails -servos -paint of vinyl skinning I may be accused of being naive here, but I think we can keep this thing in the ballpark of 15 pounds! In that case, I move to fit her with the retracts of the NEXA OV-10 Bronco, which is itself 15 pounds AUW. ![]() |
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You can just keep adding more and more power, make the weight work for a living.
They say anything can be made to fly with enough power. . |
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What's the wing area? It's gotta be substantial.
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I have no idea how to figure the area (math was never my strongsuit).
It's a triangle 93 inches long and 81 inches from tip to tip. |
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