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Old Mar 04, 2015, 05:08 PM
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Quote:
Originally Posted by Renfield View Post
Well folks, my maiden of the big DZ Hobby Icon A5 was an incredible bust. Sorry to let you down. My weeks of prep made a splash. Then a thud.

Cheers to Seeker-Shig, ThomasB and others who've made this one work.

It's rebuildable. Foam is very resilient. Clearly I'm a BNF pilot.

On a positive note, in the brief time this one few, tail wag was never an issue.

g
I'm soooo sorry to hear but I have to ask, did you get it on video??

I've been VERY lucky to catch MOST of my foibles on video!

All the best on the rebuild!!!

b



Alligator attack UMX ICON A5 (3 min 15 sec)
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Old Mar 05, 2015, 08:44 AM
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Originally Posted by rikybob View Post
I'm soooo sorry to hear but I have to ask, did you get it on video??

I've been VERY lucky to catch MOST of my foibles on video!

All the best on the rebuild!!!

b



https://www.youtube.com/watch?v=r3Z4jcfUVrs
It's a video foible alright. Covered it with two cameras. I just haven't had the stomach to watch it yet.

Pretty sure the audio will sound like a boatload of sailors holding forth on every cussword ever conceived.

Better days,

g
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Old Mar 05, 2015, 09:00 AM
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Originally Posted by Renfield View Post
It's a video foible alright. Covered it with two cameras. I just haven't had the stomach to watch it yet.

Pretty sure the audio will sound like a boatload of sailors holding forth on every cussword ever conceived.

Better days,

g
I love cussing!

Waiting with baited breath!

b



EDIT: I did a quick search of my over 1000 Youtube viddys and found 40 with the search term "Crash". My latest below.....

ICON A5 RCACF "Landing" (8 min 13 sec)
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Old Mar 05, 2015, 10:13 AM
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Any landing you can keep flying after is a good one. ^^^

Well, here goes fellas.

1800 Icon splashdown (2 min 30 sec)
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Old Mar 05, 2015, 03:46 PM
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Originally Posted by Renfield View Post
Any landing you can keep flying after is a good one. ^^^

Well, here goes fellas.

https://www.youtube.com/watch?v=WJrv...ature=youtu.be
Dang I hate that for you!

I studied it like an FBI agent and since I have NO credibility what so ever take what I have to say with a grain of salt.

I'm thinking you would benefit GREATLY from a 3 axis stabilizer!

The one guy from Malta advised that he used a two axis.

What is your thoughts?

Thanx for sharing!

b
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Old Mar 06, 2015, 07:32 AM
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Originally Posted by rikybob View Post
Dang I hate that for you!

I studied it like an FBI agent and since I have NO credibility what so ever take what I have to say with a grain of salt.

I'm thinking you would benefit GREATLY from a 3 axis stabilizer!

The one guy from Malta advised that he used a two axis.

What is your thoughts?

Thanx for sharing!

b
Thanks for watching, Brian. I appreciate your thoughts. It could probably benefit from a stabilizer alright. It was hard to watch, but I've had a few thoughts too.

It taxied well. On the straight it even flew well (despite nose heavy condition). But in the turns it tried to fold in on itself. If you check the first left turn, the yaw rate is crazy.

Before adding more technology, I'd like to get the basics right. I think the 20 percent expo wasn't enough for the elevator. And the control horns are set too far in on the rudder (and maybe elevator too). I'll move the CG back a tad also.

I can fly it with one adjustment out, long enough to get it trimmed or land it. But more than that baffles my thumbs. It's going to take some sorting.

I had to put a pack through the PZ Icon just to calm my nerves. And after a full run at speed, that plush 40 was barely warm.

Good times,

g
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Old Mar 06, 2015, 01:19 PM
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Originally Posted by Renfield View Post
Thanks for watching, Brian. I appreciate your thoughts. It could probably benefit from a stabilizer alright. It was hard to watch, but I've had a few thoughts too.

It taxied well. On the straight it even flew well (despite nose heavy condition). But in the turns it tried to fold in on itself. If you check the first left turn, the yaw rate is crazy.

Before adding more technology, I'd like to get the basics right. I think the 20 percent expo wasn't enough for the elevator. AGREED 1000%!!! And the control horns are set too far in on the rudder (and maybe elevator too). I'll move the CG back a tad also.

I can fly it with one adjustment out, long enough to get it trimmed or land it. But more than that baffles my thumbs. It's going to take some sorting.

I had to put a pack through the PZ Icon just to calm my nerves. And after a full run at speed, that plush 40 was barely warm.

Good times,

g
Yeppers I was thinking the SAME thing re Expo but I made the leap to a stabilizer as it might compensate for that need, initially but you'd still have to trim it right either mechanically or by radio.

Your solution is the simplest in particular if you haven't used the stabs before.

I have it on one ICON and my Durafly Trojan. It works a TREAT!

Good luck and I look for a re maiden!!

b
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Old Mar 07, 2015, 09:08 AM
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Thanks again Brian.

Tech Junkie mentioned not seeing the post mortem.

Here's a look.

g
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Old Mar 18, 2015, 07:30 AM
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FrIconStein

I finished the rebuild yesterday and took another hop. This time I did the Wright brothers approach. Straight line, take off, land, return. All good.

A second pass with similar results. Then on the third try, I ran up the throttle after takeoff. That's when it got weird.

So I'm mentally wandering back to that, ahem, discussion between ThomasB and Sentry a couple years back. Both held firmly to their opposing theory that the motor should A. point down at rear or B. point upward at rear.

The DZ Icon motor mount angles up to the rear, as Sentry insisted is correct. It seems like when I punch it, the effect is that the nose is pushed down - hard. This starts a struggle between my thumbs, fighting thrust with elevator, that I've never experienced.

Because all my other Icons have the motor pointing slightly down toward the rear, I feel like that's a good place to look for a fix. If a shim job fixes the issue, all the glory goes to ThomasB!

I will create a shim and test the theory. But it was good to get her wet and not come back with a parts collection for once.

All thoughts and theories are welcome.

g
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Old Mar 18, 2015, 10:13 AM
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When a simple shim is too much to ask.
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Old Mar 18, 2015, 11:49 AM
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Now if only the winds would drop into single digits.

Comparison with PZ Icon.
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Old Mar 18, 2015, 03:48 PM
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Now if only the winds would drop into single digits.

Comparison with PZ Icon.
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Old Mar 19, 2015, 10:01 AM
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The wind did fall off. And once again no joy. Even in the days when I built balsa r/c kits, nothing ever performed so poorly as this pathetic beast.

Another paddle boat ride for parts. I'm out of ideas, and patience. Too much time and $$$ down the rat hole.

Maybe I'll rescue it from the boneyard in a couple years. After I've had plenty of time to forget.

I'm going back to planes that actually fly.
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Old Apr 01, 2015, 09:29 PM
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What fun plane!

Parkzone Icon A5 with Water Take off and Water Landing (3 min 22 sec)
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Old Apr 03, 2015, 11:28 AM
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That PZ Icon is a fantastic plane. Great video work.

After reassembling my DZ Icon, I tested the electronics. Turns out the bearings in the HK motor were binding. Now I'm wondering if that was the reason for the crappy maiden.

Also, I did a look back again at the motor angle debate. Although ThomasB was dead set on his theory, his DZ Icon motor in the photos was definitely angled down toward the nose, just as Sentry insisted it should be.

Hmmm...
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