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YC-14 Decommission

November 3, 2013 Leave a comment

Sad moment. The decommission of the YC-14.

But she will raise from the ashes next spring.

Wing is tucked away till then.

Onto the AR-48.

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YC-14 Airframe Retirement

November 3, 2013 Leave a comment

The poor YC-14 had no chance today. All that work for nothing.

Another nose drive into the turf. This one proved to the end for the airframe it is simple to bend up now to patch.

The wing is fine.

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That said the power pods came clear off this time.

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The nose was completely ripped apart. I am going to return the much stronger style that the YC was born with.

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The GoPro was in there but it was fine.

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The air frame buckled toward the rear cargo hatch area and issues can be seen up front.

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Similar issues toward the back on the other side.

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Cracks along the inside leading toward the tail section.

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Example of some of the buckling.

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And the big tail killing crack. Even if I could repair it I don’t think I’d trust it.

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I will strip the electronics and parts off the YC this evening and move on to a new winter plane but don’t worry. The YC will return for spring 2014.

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YC-14 Land Gear

November 2, 2013 Leave a comment

I’m getting a little tired of the landing gear game.

Today I bought locally some wheels and piano wire.

Onto the other more rewarding jobs

The wiring for the servos is all done and clean.

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RX 2 all setup. Bay doors closed.

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Doors open.

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Wiring all tied up and clean.

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Flaps down.

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Those wheels. Cost $22. Crazy money compared to HK but it was RTFN thing 😉

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This is what I cam up with.

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I had hoped the setup would work but there is to much side to side flex.

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More work to come. I may have to go off the body. More thinking to do.

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YC-14 New 6Channel Radio & Flaps

November 1, 2013 Leave a comment

Praise the manufacturer. My HobbyKing order with my 6 channel radio ordered back in Sept has finally arrived. Such drama.

Interesting little test. I tried the other 6ch radio and was able to sync up the receivers. Cool stuff.

I spent a fair bit of time trying to setup 2 servos for the cargo bay doors but decided it was to annoying and went on to the flaps.

But lets not get ahead of our selves. The order…

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Turnigy 6X FHSS 2.4ghz Transmitter and Reciever (Mode 2) – Moved James’ radio over to control the cargo door and bomb drop servos.

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x2 ZIPPY Compact 2200mAh 3S 25C Lipo Pack – I now have enough to enjoy a few flights during the day.

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x4 Turnigy TG9e 9g / 1.5kg / 0.10sec Eco Micro Servo – 1 is now working with the bomb bay and 3 are spares.

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Turnigy Pure-Silicone Wire 12AWG (1mtr) RED

Turnigy Pure-Silicone Wire 12AWG (1mtr) BLACK

I’d order this stuff to build the Y connections but HK was stupid slow to ship.

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Turnigy LSD 4.8V 2300mAh Ni-MH Flat Receiver Pack – I had hoped to use this in the TX but it won’t fit I guess it was meant for the RX as stated. Should have ordered the AA instead.

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Onto the flaps and aileron updates. I installed x2 HXT900 9g / 1.6kg / .12sec Micro Servo servos to be the new ailerons.

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The servos formally used as ailerons are now flaps.

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I did have to unglue and remount the left side servo so it worked in the same direction.

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The flaps are slaved to my #5 switch on the remote.

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Currently they are full on or off.

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When the 9X comes in I’ll be able to program the rates.

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I look forward to testing this.

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A few more things to tie up but should be ready to fly this weekend.

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YC-14 Nose Job

October 30, 2013 Leave a comment

As much as I liked the dome it messed with the planes gc and balance.

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I opted for a rounded nose.

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Cutting in some windows.

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I used the rounded “gut roll” piece for the front.

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More windows.

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GoPro mount.

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Hmm seems to remind me of a CH-113 LABRADOR.

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Should help with the take off. A little more nose up.

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Working on the balance.

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Balance has improved but still needed a battery on the tail.

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By moving the batteries back to the original position the CG improves.

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Slightly nose down but no cargo in the rear.

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Setting up the battery package over top the egg hopper.

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Build these supports for the batteries shelf.

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Setting it all up.

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Battery shelf installed.

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Compact batteries.

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Had to make a small stand since there gear are not installed on the plane.

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Speaking of gear. Wheels are still to small and the rear setup is all wrong.

YC-14 Nose Gear & Small Order

October 29, 2013 Leave a comment

Received a small parts order from Hobby King. Only took 3 weeks.

Below is the 3S balance cable. You see ANYTHING wrong with this cable?

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How about now? Notice the power lead coming off the battery? Black & Red???

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ALWAYS check the kit you receive from HK. I fixed the issue.

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Order details. Most of this was placed after we crashed the YC-14 due to the wing failure.

3S Twin Charge, x2 motors, another LED, x2 servos and some 60cm extensions.

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This connector allows me to charge 2 3S batteries at the same time.

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Plugged into the charger.

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Set to 6S @ 4.4

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The charger does not know it is 2 batteries just reads the 6 cells.

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Hanger landing gear test.  (Not strong enough)

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But the material used for the nose is great. Antenna build material. I tried a bend you can see above but in the end I put it into the vise and hit it with a hammer.

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The old gear.

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CG Balance & 160 Grams

October 28, 2013 Leave a comment

To be honest we all thought the YC-14 was tail heavy but then I watched a video from FliteTest and decided that was not the case.

Tail Heavy Plane – Flite Tip

Step 1 build CG test gear.

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2×4, 1×1, wooden dowels and rubber bands.

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Step 2 measure. Wing is 11.5″ wide. 11.5 @ 33% = 9.6cm. Just because I like to mess with math.

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Marked and ready to test.

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NOSE down!

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And that is with no GoPro in the bloody nose.

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On my marks. Yep.

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Starting the process. I’m not going to mess with the internals at this time.

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Just adding weight to the tail to see what happens.

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A lot of weight.

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Put the GoPro in just to see how much I really needed.

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To answer the question 160 grams right on the back of the tail. Yikes.

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A little nose up but that is fine.

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So this could explain the plane not being able to lift off during the run way tests.

More work tomorrow.