phakur

My Feedback: (13)

Bah. The kind of answer I expected in this day and age of profit over everything.

Mark Dennis

My Feedback: (4)

Dick,

Adjusting the trust 1 degree will not change the cowl alignment enough to be of any concern. This is a very common adjustment on many airplanes.

Mark

pettit

My Feedback: (23)

Doing the math, the spinner will be out of alignment by 1/8" or so at 1 degree of right thrust.

No comment.....

Mark Dennis

My Feedback: (4)

The screw holes can be enlarged slightly in the cowl to move the cowling an 1/8" the bonded washers will still hold the cowl in place as well as cover the slightly enlarged hole. This is not an odd thing to do at all and any modeler should understand how to do this. You are making adding a single degree of thrust a much larger issue than it needs to be.

Mark

phakur

My Feedback: (13)

Mark
I guess just an expectation that when one spends $700 on a plane, especially my situation where this will probably be the most I will ever be able to spend, one would expect a proven design that's fits up well

I gather that is not necessarily a big deal to some. But it is to me.

Mark Dennis

My Feedback: (4)

Phakur,

I understand your concerns here but please understand that there is nothing that will make your airplane unflyable. At the very worst you will need to carry some aileron trim, once the airplane is trimmed out the airplane will fly very well. Something that I think many people have lost sight on is that these are still hand built wooden airplanes. that are built within a certain set of tolerances, on an airplane this size that can be + or - an 1/8". These wings are still within tolerance and while we are addressing this with our factory to the best of our ability there simply is no guaranty that we will be able to get them any better than that 1/8" tolerance.

Thank You,

Mark

pettit

My Feedback: (23)

"From what we have seen the right wing has 1.5-2 degrees less washout than the left."

"These wings are still within tolerance and while we are addressing this with our factory to the best of our ability there simply is no guaranty that we will be able to get them any better than that 1/8" tolerance."

Two different measurements, 1/8" and 1.5 to 2 degrees.

The washout, I feel, is thedifference that causes the problem. Nothing on either wing is 1/8" out of tolerance.

I really don't mind offsetting the engine 1 degree.

It's the fact that the plane was sold (lots of them, for that matter) with 1.5 to 2 degrees difference in wing washout.

To me, this is out of tolerance.

AkimRU

John,
Many thanks for your help. I copied your post and added it to manual. I think it will help me, during building the Bravata. But I’m waiting for photos you promised.

nitro wing

My Feedback: (1)

I dont even own any AW planes at this time. I think its a PRO manner that Mark Dennis came onto this thread and explained what happened and what can be done with airframes in circulation at this time. I would agree, that with sport scale planes, some slight mods can easily be made to make them a great flier.
Often its very easy to do, some may disagree, because its a more than average cost ARF, but if an easy solution is available, please try the remedy.

I bought an EF Yak, 74 inch years ago, it had severe incidence issues, and it was known all over the internet, and made maidens horribly wild.
Once adressed, it was a simple fix and the plane was very competitive.
Surely the AW Bravatas can be adjusted to be trimmed nicely.

maukaonyx

Pretty sad results, and I am not impressed by AW's response re the wing warp and color mismatch. Jon

Kostas1

Is the engine a US design and mfg ?

pettit

My Feedback: (23)

Which engine are you speaking of?

AkimRU

NASA! And plane is made by Boeing!

pettit

My Feedback: (23)

OK, Bravata fans. We flew it yesterday with the Aero-Works Floats installed. Two flights (it was cold and drizzly) but it flies great! Just about 20 pounds with the floats and the DLE-30 provides plenty of power.

My flying buddy Rick Cawley flew it the second flight with the flaps down and less than half power most of the flight and it just "floats" throught the air.

Here's the YouTube video link:

http://youtu.be/MrDgPL035Xg

Zippi

My Feedback: (10)

pettit,

Looks good on floats. I was going to take another look at this plane if the washout issue was going to be resolved in future runs. From what Mark Dennis says (no guaranty that we will be able to get them any better) it looks like things will probably remain the same for the life of this model.

AkimRU

Thank you, Richard!
It was wonderful! Now I know what I want!
I think, I can finish to build the Bravata when snow melts in Russia.

AkimRU

Dick, what did you do from AeroWorks recommended to prevent the plane from left bank?

pettit

My Feedback: (23)

I don't think the recommendation to add 1 degree of right thrust to the engine will do anything to counteract the left bank. I just trimmed in some right aileron trim and a little right rudder trim and it flies OK.

It looks funny but flies great.

AlW

My Feedback: (17)

Hi Guys,
I got my Bravada almost one year ago from Aeroworks and you can see my initial comments in this forum somewhere back on page 2. I did some initial work on the airplane but got stalled for quite a long time with other projects and family issues. Anyhow it is finally finished and the maiden flight was earlier this week with (3)more flights to-day. I am very happy with the results. The maiden flight required only a little up trim in the elevator and no trim at all in the ailerons. The flap settings that I used were 15 degrees for take-off and 35 degrees for landing. Quite a bit of down trim was required for both settings but again no aileron trim was required. One of the things that I did was to check the wing incidence of both wings before I tightened the covering and I did find that there was almost (3) degrees of difference from one side to the other where the outboard edge of the aileron meets the wing. With the help of a friend we were able to twist one wing tip down and the other up while using a heat gun and after an hours work the job was done. That task was completed about 6 weeks ago and the wing is still holding.
The Bravada is off the ground in a very short distance without the aid of take-off flaps. I did the first two landings without using landing flaps and it was no problem but the airplane likes to float. The next two flights were done using landing flaps and that was a pure joy - beautiful slow stable approach to a perfect landing. I am looking forward to getting more flights on this airplane and doing some more fine tuning to the trims. Good job Aeroworks.
Al

maukaonyx

I know one member (akleader) said his Bravata with DLE-30 balanced on the recommended CG with moving his batteries as far forward as possible. I have just started assembly and am not to that point yet, so I just ask what other owners have found re CG with a DLE-30? That tail moment is so long that I am fearful of being way tail heavy. Let me know what others have experienced. Thanks! Jon

AlW

My Feedback: (17)

Hi Jon,
I am using a DLE30 and I balanced the airplane on the recommended CG. I am using A123 1100MAH batteries - one (2) cell for the ignition and two (2) cell redundant batteries for the receiver. The ignition battery is attached to the left hand side of the engine box just ahead of the forward bulkhead. The (2) receiver batteries are located above the fuel tank floor and an inch or so ahead of the cockpit instrument panel. No other weight was required to balance the airplane. If you need the weight of a (2) cell A123 1100mah pack let me know.
Al

maukaonyx

Al, that is awesome because I will be using two LiFe 1100 packs for the flight system, and a 4.8v NimH for the ignition. Thanks for the response. Sounds like no worries! Jon

Planejaw

My Feedback: (53)

I built two battery areas just behind the instrument panel area. I am using one 3200 mah LiFe for ignition and either one or two 3200 LiFe packs feeding through a Smart-Fly. Balance is perfect. I opted not to put the throttle servo behind the firewall and put it in a servo-slot between the batteries. Sorry, can't upload any photos right now.

maukaonyx

Much appreciated, John. Yup RCU is fubar right now re uploading and viewing photos. Post pics when you can. Thanks again. Jon

Planejaw

My Feedback: (53)

OK, we'll give this another try. Here are some photos of my battery installation.