najary

I din't notice any change as far as the break on downlines is concerned.

But I did notise about 10% saving in the electricity consumption.

Best regards,

Isaac Najary

s-chester

Hello
You can get propellers in different sizes

Rasa CFK Propeller starr 20/10 "
Rasa CFK Propeller starr 20/11 "


http://www.plettenberg-motoren.com/UK/Zuebhoer.htm

Good luck

atul

Hi Najary,

I built my Xigric C2 following precisely all your instructions (though the build quality does not match yours :-). I use a YS 170 (CDI) for power and so the nose weight is higher than expected.

Unfortunately, my Canalizer literally 'sheared off' (I replicated your method of attaching it), mid-flight in the 13th flight. Must have been a case of too much wind. I don't want to wait for a new one from ZN-Line, so I wanted to ask you: do you have the precise dimensions of the Canalizer? The Root Chord, Tip Chord and angle back from the root point are the essential items, along with the span. I'd be very grateful if you can measure and provide these. Thanks.

I found (with the canalizer on), that the CG did indeed need to be moved back to 200 mm from the TE. In my case, even that was not sufficient - it is now at 190 Mm from the TE. A strange thing happened when the CG went from 200MM to 190 MM from the TE: the model now pulls to the belly in a left to right knife edge, rather than to the canopy! This is without the Canalizer.

Anyhow, I'd like to get the Canalizer back on since the rudder authority with the Canalizer on is a lot better. So any help on the dimensions would be most appreciated.

Thanks a lot for your build-thread, which was extremely helpful. The model is now very solid and flies real well - especially with the Canalizer!

Atul

najary

After 500 flights a crack had been developed in the wheel pants.

I decided to use anti rotation pin.

Best regards,

Isaac Najary

Viper Driver

My Feedback: (1)

Isaac,

I used this method on my newest plane and it is holding up well so far.

Jeff

najary

Hi all,

At the w.c. I asked Mr. Naruke what is the intent of these fences in his ASYULER ETERNAL.
He told me that these fences increase the stability in stormy weather.
I also asked him why he didn't place then in the wings tip and he said that first placed them in the wings tip and then he moved then gradually toward the wings root, finally he found this place as the optimum.

I decided to try these fences in my Xigris.

If anyone knows more about these fences I will be glad to hear.

Best regards,

Isaac Najary

najary

Step 1

najary

Step 2

najary

Step 3

najary

Step 4

najary

Step 5

GiMsAcE

Awesome work as always Isaac can`t wait to see them finished..!! it would be interesting to hear what are your results and thoughts on the fences.
Are you going to try them with the Canalizer on the plane?.

najary

Step 6

najary

Step 7

najary

Test flight:

Unfortunately today the weather was calm so I could not feel much difference in the plane stability.

I have to wait for some stormy weather to see if there is any improvement.

Best regards,

Isaac Najary

beijinger

OMG....what a wonderful plane!

falconhob

My Feedback: (1)

Thank you for this wonderful build thread - I've picked up several ideas for my new build.

Isaac, with over 500 flights on them, how have you found the Savox servos to perfom? I'm considering them however saw an earlier post that expressed concern about their centering and others about noise. What has been your experience with them? I saw you mentioned that at 40 flights you were happy with them, is that still the case?

Thank you for your insight.

najary

Hi Falconhob

I have now over 600 flights on then and still very happy with them.

If I would be stating a new model now, they will be my choice again.

I know that other pilots in Israel have the same experience with them.

Best regards,

Isaac Najary

wagen017

Isaac, interesting finding. So basically you see that the new Q80 motor has about the same mAh usage then the C50?

thanks, Volkert

falconhob

My Feedback: (1)

Excellent. I'll give them a try on my new build. They seem to be excellent value for money.

najary

Hi Volkert,

Yep, you may say so, the Hacker Q80-13S P20 with 20 X 10.5 Ulsamer prop, consumes about the same as the Hacker C50 XL 13 or XL 14.

Now I am flying the Q80-13S P20 with APC 20X13 prop with grate results, it is definitely more powerful then with the 20 X 10.5 Ulsamer prop, the RPM is lower and it is quieter.
But the consumption is about 10% more.

Best regards,

Isaac Najary

MAVROS

Gday Najary,

Firstly let me tell you that you are the best builder ever......wish you lived in Aus so I can buy your old models.

Just wondering as to why you bother with T CANALISER when the right thrust required is 3.5 degrees.
To me this doesnt make sense when the idea of the T CAN is to stop the prop circulation hiting the rudder and yet 3,5 degrees of right thrust.....
I understant from my Fluid Dynamics studies that a moving object like this small wing will produce certain turbulent airflow and down wash in its wake and this woould make Rudder more effective .......but I think there are easier ways of achieving this...




kind regards

MAVROS

atul

Mavros:

The T-Canalizer dramatically increases the rudder authority of the model. But for sure, a significant amount of right-thrust is needed. I'm using the same trim as Najary (thanks Najary!), and the right thrust as well as a CG moved back significantly, is required to ensure the model flies well..

Atul

najary

Hi all,

At the last word championship the German pilots used 3 blades props.
So I asked my friend Mr. Bruno Schiffter from Germany to provide me some details about that 3 blade props.

Here are some quotes from his emails:

"I have spent a lot of time this spring to try all possible types of 3 blade props. It works at the P20 13s fantastic!
The Q 80 P2013s with two blade prop was the right step; the 3 blade prop at this motor is the next step.
Never have had a better (constant power/ speed) F3A motor before!
At the end of my test flights, Delro-Modelltechnik have made a 3 blade 19x11 (weight 107 grams) with wide blades, which works absolutely great."

"The Delro 19x11 3 blade turns 5950 U/min at 75 Ampere; approx. the same amps like the 2 blade 20x10,5.
But in one flight, you need approx. 400-500 mAh more, compared to the 20x10,5 2 blade, because the characteristic of each 3 blade is another ( that what we want!).
But no problem in running time for each good 4500 mAh Lipo. (P 11 approx. 3500 mAh at low wind and 3900 mAh at high wind conditions)
It is like ever. no advantage without disadvantage.
The disadvantage is that you need more amps in flight, so you need a 4500 mAh battery as minimum.
The advantage is a great, very, very constant power!
Also downside; I think, nobody need a contra rotating drive set anymore!
I am sure, you would like it!"

"Please order 19x11 electric special for Hacker Q 80 and you will get the right prop in a light version. (Approx. 110 grams and made for the short shaft of Q 80)"

"The flight character is different to Günters two blade
- Very much braking downside,
- A little less trust at full power (but more then enough for each storm) and
- Much smoother in power again.
- Less speed but more constant
The sound is okay; It's another, higher sound but no fan-sound like other 3 blades I have tested.
Many people say, it sounds great."

"You have to change your throttle curve and then after any flights I am sure, you will be enthusiastic.
I for myself never have had a smoother, better braking and constant power drive set since I fly F3A.
I am at the end of my wishes of drive set."

I tried that prop on my Xigirs and I can approve all the above and I am so happy with it.

http://www.delro.de/modell_info.php?kat_id=5&mod_id=22

Best regards,

Isaac Najary

MTK

Yes I have found the same thing with larger 3 blade props on petrol engines. Currently using a 20x12 Mezjlik on a DLE55cc with terrific results. The braking of this prop is really something of note. And it is definitely a more constant speed set-up