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Old May 07, 2012, 05:45 AM
GeorgeStyriaII is offline
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Idea
Freewing Su-35 with better sound and more POWER

Hi,

I have a Freewing SU-35 and think: I need more power and better sound!!
So i dicide to make a lite "operation" on it...

Now i use two Jetfan80. Not the cheapest, but this fans i will have for years
The "operation" was no problem and need only about 1 hour per site.
More difficult was, to bring the servocables to the place that i want... for that i need about 3 hours

Now the elevators work as tailerons.
The ailerons now are only flaps.

Now i have to wait for the HK heli motors with 1600kv. I hope to get complete about 3,6kg thrust at about 100A from one 6s5000mah 65/130c nanotec. We will see...

But i think, pictures says more than my english
Here we go:

Regards
George
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Old May 16, 2012, 01:55 PM
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Cool project George, those sweet 80mm fans should definitely give it more thrust, keep us posted on your progress!!!

-Rick
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Old Aug 20, 2012, 03:00 PM
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Taileron servo

I change the taileron servos to stronger ones: Blue Bird BMS 385DMAX
http://www.hobbyking.com/hobbyking/s...sec_16_5g.html

Maiden will come soon

regards
George
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Old Aug 20, 2012, 04:53 PM
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Looking forward to it, make sure to get it on video!
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Old May 07, 2013, 03:10 AM
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Update

Meanwhile, some time has passed and it was working on other projects, but now the maiden can come.
And so my "Susi" has been pimped something ...

At the next days it´s very rainy, but i can wait a few days.

George
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Old May 07, 2013, 03:43 AM
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Been looking forward to this for a year now. I know how plane builds can get long some times. Hope to see a video soon.
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Old May 07, 2013, 08:23 PM
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Same here, looking forward to this maiden!
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Old May 09, 2013, 01:03 PM
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Today was the first four flights!
Flying Weight 3.398g
6s 5000mah 65/130c nanotec
2x Jetfan80 with low cost HK motor 1500kv
complete 104A but only 3.3 kg thrust. Probably because of the small outlet nozzle ...

I only fly with tailerons. The flaps are coupled to the landing gear doors and go as slow approx 18mm down. As a result, I have to keep then a little bit with the elevator.
So it can be incredibly slowly and gently land!

The starts have lasted a little longer, because the main landing gears are too long ...
So I later mounted the smaller HK wheels.

Speed ​​was ok.

More powerful engines are tested the next time.

By the way, today I compared the size with the Grumania Su27. Which is even a little smaller!
So our SU35 certainly tolerate even larger battery - 8000mah 6s?

Video will come - but this can take 10 days...

Regards,
George
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Old May 09, 2013, 04:30 PM
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Video please :-)
Maybe consider this motor and 6000 6s?
http://www.highendrc.com/index_eprod...products_id=81
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Old May 28, 2013, 03:19 AM
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Here is the maidenfly video:

Freewing Su35 Jetfan80 low power setup maiden (3 min 48 sec)


I wait since 3 weeks for better motors... hope to get it soon!

@ nerv: i need motors with 5mm shaft.

btw. in the mean time i reworkt the inlet again and get much more thrust!!
Now i also make new / bigger TV´s...

George
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Old May 29, 2013, 08:26 PM
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George, very nice sound indeed! Good work! I am interested in that big Mig29 you have in the picture. Who makes that? Where can I buy it?

Jay
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Old May 29, 2013, 08:44 PM
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Did you get to do anything at the EXHAUST side?
The TV gimbals would seem to be a limitation to any diameter increase at that side.
They would remain a bottle-neck.

In mine, the HET2W30 2200KV CS10's don't seem to have any inlet side issue, because if they did then it would stunt the power levels it uses - but they are near equal to bench levels.
eg if inlet side is limited then Amps/power go down, and so does thrust.

If an exhaust side is limited then the Amps go UP and thrust goes down. (But efflux speed probably goes up some amount - but I can't measure that). This is what I am seeing as the predominant issue in the FW Su-35.

So as far as I can see it is only the exhaust side that is a real issue to matter.
The inlet side 'mess' would mainly alter top speeds. So you would give higher priority to tidy that side up if speed was your aim.... or even just if you wanted it more optimal anyway.
But the main focus for thrust and 3D is the exhaust side - if that is even possible with the TV gimbals there.

I have "100 other tests to do" but I should remove the TV and run it on straight out exhausts - opened to 61mm - to test that out too. But I have not looked at the TV units and how limiting the way they are affixed would be to test mods. I wouldn't want to open out the exhausts and then not be able to put the TV units back in later on.

But that is the side (exhaust) I would like to see tests and results from.....
Based off two other 70mm CS10 jets I have, 61mm or so gives better thrust results. Whilst still have very good/high top speeds still.
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Old May 30, 2013, 06:11 AM
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Quote:
Originally Posted by Antaeus View Post
George, very nice sound indeed! Good work! I am interested in that big Mig29 you have in the picture. Who makes that? Where can I buy it?

Jay
Hi Jay,
Thank you.
The MiG is a "Tetris-style" plane from http://www.google.com/translate?u=ht...2&langpair.y=9

It´s 2,1m long and has 1,5m wingspan. For 2x 90mm.
I will use 2x 12s and will get a TOW of ~ 8kg and the thrust should be in the 9-11kg range...

Here on rc-groups:
http://www.rcgroups.com/forums/showt...t=mig+29+tetri

George
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Old Jun 03, 2013, 06:18 AM
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my new TV´s

The bigger TV´s nearly finished...
The new outlet has 68mm (before was 60mm) - perfect for the 80mm Jetfans
Now i have to make the thrusttubes and wait for the motors...
The diameter in front of the nozzels at the wood ring is 70mm and the new TV´s safes me 30g


Hope to can make some tests soon.

George
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Old Jun 08, 2013, 09:56 AM
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Quote:
Originally Posted by GeorgeStyriaII View Post
The bigger TV´s nearly finished...
Topp-Arbeit! Bravo!!

Cheers,
Henrik
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