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Archive for April, 2019
Posted by VicT | Apr 30, 2019 @ 04:57 PM | 2,226 Views
Fellow clubmember Cliff started flying an Apprentice and then a Commander. He asked me if I could reduce the pitch up of the Apprentice at full power to a lower climb angle like his Commander. I showed him Flight Modes that could be used with his DX6 but he was unsure of that route. So I suggested reducing the decalage angle by shimming the trailing edge of the wing. I had some hard 3/32 inch thick balsa so started with one, then two and finally 3 layers of wood. The end result was a 5 degree climbout angle at full power with SAFE on (Beginner Mode). With full up elevator she climbed at about 80 degrees. Happy with 9/32 of shim we filled in the gap with a single piece of 3/32 and white electrical tape.
Posted by VicT | Apr 16, 2019 @ 10:48 PM | 2,639 Views
Today was a perfect weather day that started out (April 16, 2019) with cool temps (60F) but warmed up to about 75 by noon. Winds diminished to about 5 mph and no clouds. Lift was light but just enough for the Heron. I used the Lithium Ion (LiIO) charge setting on my $110 Hitech Black 2 pack charger. This puts about 90 percent into the Lipo 2200 3S 45 C pack and does not over charge the pack. On the first flight I flew for about 25 minutes using about 1.5 minutes of full power climbs. I only go full throttle for about 15 seconds each so this was about 4 or 5 climbs. After landing I had 55% remaining on the pack. I adjusted one flap and launched again into light but steady lift every where. After climbing to about 1000 feet and turning off SAFE Self Level I did about 1 minute of aerobatics with aileron rolls and loops. Max dive speed with SAFE on is limited to about 60-70 mph because the gyros limit dive angle to about 40 degrees. No wing flutter or flex was observed from the foam wings with aluminum wing spars. Energy retention is not like heavier fiberglass designs but is fun anyway. The full flaps and crow with full down elevator stick provides a nice 40 degree slow dive to a round out and flare right in front of you. The single wheel protects the belly and allows for friction free rollouts that are about 30 feet long . There is not friction on the wheel but if it had then this could provide for less rollout distance.

I am still learning...Continue Reading
Posted by VicT | Apr 05, 2019 @ 06:45 AM | 2,304 Views
Quote:
Originally Posted by Mark 2
Well Ive pulled the trigger, so mine is on the way.
Im thinking about using the 6ch Spektrum antennaless receiver, do you guys think that would work OK in this plane? Only thing Im worried about is the size of the battery possibly blanking the receiver at some angles.

It should work but I recommend an AR636 SAFE Select Receiver. It does not have signal strength telemetry like the antennaless receivers or the Taranis/Frysky systems. You already have a DX 6-9 transmitter right?

See my blog on why Im using the AR636 wing leveling feature to minimize prop and wing surface contact. Will post flight test results in about 2 weeks using the V900 636 receiver.
Posted by VicT | Apr 05, 2019 @ 06:31 AM | 2,381 Views
Quote:
Originally Posted by Mark 2
Well Ive pulled the trigger, so mine is on the way.
Im thinking about using the 6ch Spektrum antennaless receiver, do you guys think that would work OK in this plane? Only thing Im worried about is the size of the battery possibly blanking the receiver at some angles.

If you dont want to have the benefits of a SAFE receiver then yes. I have the 4ch antennaless receiver in a DHLG 60 inch glider that has carbon fiber imbedded in the Kevlar fuselage. Its a 8.9 ounce David Forbes Vixen that I dont want to lose. The nice feature of the 4 and 6 ch design is that your DX transmitter shows signal strength in various aircraft positions where battery and metal, and carbon can interfere. To verify and validate adequate signal strength this I had another pilot point the CF fuselage and tail at me about 1000 ft away. I could barely see the rudder and elevator move but we had cell phone speaker comms open to coordinate the test. I found no low signal strength values at my DX9 telemetry screen and flaperons, and rudder and elevator worked perfectly. The nice feature of this new design is that you could use 3M Dual Lock (not flexible velcro) to mount the RX in the wing to test signal strength. When testing is completed you would have less connections at the wing and fuselage.

I like to have gyro technology level my wings on crosswind landings and takeoffs. This will...Continue Reading