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Archive for August, 2018
Posted by FeiJi | Aug 20, 2018 @ 07:03 PM | 4,822 Views
In making my epp plank wing I had inadvertently made a crushable fuselage - shock absorber when I extended the front of the fuselage by putting a smaller diameter rod inside a larger one. When I crashed nose-on the fuselage collapsed and just wrinkled up the epp foam and the motor just popped off, no real damage. Just hot-glued it all back together again.
Wish I had taken photo of fuselage all crunched up. Hopefully it wont happen again. I had just launched my plank but it was responding to a turn so slowly because the tail was loose and bending back and forth.
Posted by FeiJi | Aug 14, 2018 @ 08:00 PM | 4,564 Views
Added little nose wheel to drag out landings a bit. Seems to land nicer than and with less shock than just a skid. Now want to raise the nose wheel to give prop ground clearance to see if delta can take off from the ground. May have to change motor and prop to give it more thrust.
Update: I raised the nosewheel to provide clearance for the prop- did takeoff from the ground. It worked but was so unstable in the air that I clipped the nosewheel on the ground and it broke off. Wish I had videoed it - was funny and cool at the same time. Will glue it back on and try video sometime.

Delta Take Off and Landings With A Nose Wheel (2 min 16 sec)

Posted by FeiJi | Aug 13, 2018 @ 02:23 AM | 4,879 Views
Epp Plank finally flies. It flies fast considering it has a slowfly prop and tiny 2206/1400kv motor. It is heavy, 450 grams and I have to really heave it to get it into the air and then it sort of fights its way up. Way under powered plane but great once it gets going. Unfortunately I had a tiny ESC on it and it was too much at full throttle. Plane doesn't really land, it just kind of falls out of the sky onto the ground. But built Ford tough. Looking forward to getting this one up to speed. It sounds kind of cool because one end of the wing is open. Also replaced crooked control rods with stronger straight ones cause they were bending - that's why it ended up in a tree. Got it down with a 5 meter bamboo pole.
See if you can hear when the ESC gives up the ghost.

EPP Plank Maiden, Fourth Flight and ESC Expires (1 min 9 sec)

Posted by FeiJi | Aug 01, 2018 @ 10:52 PM | 4,698 Views
This is a lot better than the maiden. Smooth takeoff and landings, tight rolls but it just kind of flips over on loops. Very pitch sensitive. Think it is because too much play in the elevons. Elevons are too large too but if I fly it more aggressively then that makes it more fun. Don't like to use expo.

EPP Delta Second Flight (2 min 25 sec)

Posted by FeiJi | Aug 01, 2018 @ 07:15 PM | 4,722 Views
Got this headstrap that can hold my mobile phone which has a great camera. Much better than my micro camera which had such a small field of view that it was difficult to keep the airplane in sight.
Posted by FeiJi | Aug 01, 2018 @ 06:10 AM | 5,041 Views
Pretty much finished building this plane. It ain't pretty but it sure is strong. AUW is about 14 oz and wing area is about 270 sq inches so WCL is about 6. Should fly. Got a tiny motor 2206 1400kv with a slowfly prop but thrust will be about 1:1. Going to be an interesting maiden.
Used some servo arms for the control horns.
Rubber bands holding wing on but may use bolts.
Rubber bands holding hatch on but will use magnets.
If it flies then will try a larger motor and proper prop.
Also would like to build second very flat wing to see how fast it will go.

Raining so much lately just cant get out to fly.
Finally got a proper headgear to hold my cell phone for taking video.