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Aeroworks Profile Maiden Flight

Old 04-14-2003, 03:31 PM
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Texas 3D
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Default Aeroworks Profile Maiden Flight

OK guys, weather was beautiful this past Saturday, and I worked until 1:00 AM to get the Aeroworks Profile ready for maiden flight. Heck, even went to Home Depot at 10 PM to buy some bolts for the engine mount. Well, I got there early, and everything looked fine. I had to change the throttle servo at the field, because it was bad, but once that done we where ready for maiden flight. Engine (Moki 2.10) was running beautifully so on the runway it went, and here we go: It took of within probably 30 foot. Beautiful, and climbing out...oh yeah no rolling to left or right just tracking along nicely what a beauty......oh no, whats that fludder on the elevator.....???? to late, the whole horizontal stab broke of in flight. Don't have to tell you guys any more. Just look at pictures. Maiden flight lastet about 10 seconds. Plane destroyed, 2 brand new JR 4721 servos broken, brand spanking new aluminum Tru Turn spinner gone, etc. At least the engine is fine, and didn't get damaged. Men was I dissapointed. As you probably know, I modified the elevator a little bid to allow more throw on the rudder. However that shouldn't have caused the horizintal stab to come off. It broke clean off.
Oh well, I will send Aeroworks an email about it an see what they have to say.

Next project here we come.
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Old 04-14-2003, 03:32 PM
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Texas 3D
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Default Aeroworks Profile Maiden Flight

Here is a pic where the stab broke of :
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Old 04-14-2003, 03:33 PM
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Texas 3D
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Default Aeroworks Profile Maiden Flight

Another
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Old 04-14-2003, 03:40 PM
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latch66
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Default Aeroworks Profile Maiden Flight

Sorry to hear about your loss Ulf.

I hope the plane had the decency to at least crash on the grass and not the concrete. Is the Moki OK?

jnjacksn was flying his this weekend, it's doing good. He too modified the elevator for additional rudder throw. So, I don't think that was the problem.
Old 04-14-2003, 03:43 PM
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Default Aeroworks Profile Maiden Flight

Just curious, what size prop were you running on the Moki?

AJC
Old 04-14-2003, 03:53 PM
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jsonin
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Default Wow!

Now that stinks... on a maiden too.

Looks like a 'clean' break - how strong was the balsa there? Was it re-enforced balsa or just soft balsa?

Sorry to hear about that Ulf,
Juhan
Old 04-14-2003, 04:11 PM
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tetherite
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Default Aeroworks Profile Maiden Flight

Sounds like tail braces are a "must" for this plane!
Sorry, Ulf!
Old 04-14-2003, 04:20 PM
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Default Aeroworks Profile Maiden Flight

Sorry to hear it - ULF! That really sucks! AW has always been a great company that backs up their products. I am sure that they will do whatever they can to make good within reason.
Kevin
Old 04-14-2003, 04:32 PM
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Texas 3D
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Default Aeroworks Profile Maiden Flight

Moki engine is OK. It was swinging a 20x8 Bambula prop. It went in over the grass. The balsa was 5/16", and it looks like it was just regular balsa. I'll let you guys know what Aeroworks says about this.
Yeah I guess tail braces are a must on this bird.
Old 04-14-2003, 04:42 PM
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tipstall-RCU
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Default Aeroworks Profile Maiden Flight

Man that hurts, I mean really hurts. Sorry for the loss Ulf.

Ken
Old 04-14-2003, 05:24 PM
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Default Aeroworks Profile Maiden Flight

A crash of a new plane is always disappointing. But at least it wasn't a dumb thumb mistake. Has anyone else had any elevator trouble?
Old 04-14-2003, 10:22 PM
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Default Aeroworks Profile Maiden Flight

Ulf,
Sorry to hear about your crash, and after all the time you put into this plane. You mention the items damaged by the crash, but that's just money, it's the time that sucks.

I think I did post that I witnessed some serious flutter in my elevator when flying at some speed. Upon inspection, I found that the whole horizontal stab had come loose in the fuse (I had used CA, not Epoxy). Well, I cleaned the area well with alcohol, reglued with CA and mounted flying wires. I have not had any problems since, and I like to race around in knife edge he he.
DKjens
Old 04-15-2003, 02:53 AM
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Default Stab wires

Here are pictures of my stab wires, which I guess is a must, judging from Ulf's experience, unless you have a gutless engine on the plane.
DKjens
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Old 04-15-2003, 02:54 AM
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Default Flying wires

Another:
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Old 04-15-2003, 02:55 AM
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Default Flying wires

And a last of the bottom.
DKjens
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Old 04-15-2003, 11:06 AM
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Default Aeroworks Profile Maiden Flight

Jens did you simply start on one side thread the wire through the stab, rudder, then the other stab and attatch them to the bottom of the fuse? Or did you fasten them solidly to each surface?
Old 04-15-2003, 11:14 AM
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Default Aeroworks Profile Maiden Flight

Flying wires should be fasten to each surface, otherwise you will not achieve the full benefit, and they are of little use.
Kevin
Old 04-15-2003, 12:44 PM
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Default GS540P

The OMP GS540P uses 3/8" balsa tail surfaces along with a 1/4" basswood spar running through the stab. No flying wires required, no flutter, and not one has ever broken off in flight. Yes the GS540P is a little heavier than the AW but that's the price for a structurally sound airframe. The last thing I want to worry about with my expensive radio equipment and engine flying around is the plane falling apart in the air!

Salmon
Old 04-15-2003, 01:21 PM
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Default Aeroworks Profile Maiden Flight

The wires run through the surfaces with servo grommets inserted in the holes, then I filled the holes with CA. It keeps it all in place pretty well, was easy and light.
DKjens
Old 04-15-2003, 01:34 PM
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Default Aeroworks Profile Maiden Flight

Originally posted by DKjens
The wires run through the surfaces with servo grommets inserted in the holes, then I filled the holes with CA. It keeps it all in place pretty well, was easy and light.
DKjens
That is a neat way to do it! I never of thought of that approach for installation of flying wires. Thanks for the idea!
Kevin
Old 04-15-2003, 01:54 PM
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Default Aeroworks Profile Maiden Flight

Kevin,
It is just one continues wire, you can tie it tight, and with the resistance it offers to the grommets, or flying surfaces, you can easily allign everything before the glue. We can call this tip: ******************Tip #1 ha ha.
DKjens
Old 04-15-2003, 06:19 PM
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Default Response

Well, just received an email response from Aeroworks about the crash.
They will ship me a brand new one. That is very cool indeed. This proofs to me that they have a very good customer service and do care.
Now I am not sure if I am going to build it, or sell it. If I build it, it will definitely have tail braces. Even they recommended it in their email. Wonder if they will put a note with their ARF's now. I think they should !
Old 04-15-2003, 07:01 PM
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Default That's GREAT!!!

Ulf - As I stated before, AW is a stand-up kinda company. I knew that they would make good. It is always good to hear when a company believes is truely support their customer base. I'm glad for you, regardless what you decide to do with the new kit.

DKJens - The idea of threading the wire all the way around, then aligning everything up, then gluing thrilled me when you first posted your flying wire installation technique. I caught that ease of installation right off! I Like it!
Kevin
Old 04-15-2003, 08:13 PM
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Default Aeroworks Profile Maiden Flight

Jens mind if I copy your wires? What size wire did you use?
Old 04-15-2003, 08:51 PM
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Default Aeroworks Profile Maiden Flight

Kevin,
Glad you like it, I don't know how well that would be on larger scale planes with gas or severely vibrating engines at idle, but for funfly's where the damage would happen because of excessive speed or prop wash, this should be strong enough.

I used wire from a 2-56 pull-pull system. Copy away.

Now if you put something like a zdz80RV on this plane, these wires may not save it he he.

DKjens

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