EDF ARF SU-27 Flanker Built

[AsiaSRC]

Hi Er69,

Nice little corner you have now 4 edf.

As always, you never fail to bring new edf building thread, su27 just another good one.

Another building su27 in progress, that i'm also watching closely is harald's beast! another bull one .

[AsiaSRC]

first kit has already roll out, btw he told me that this plane wouldnt be available for SALES, no even one and strictly for his collection.

[ER69]

Hi AsicSRC,
Infact I had been keeping track on this guy's site.. I really admire his building skill..
I bet you will see a building thread of depron EDF jet about this size coming soon in this forum...So stay tuned..

[ER69]

My friend's SU 27 maiden result

Hi guys,
My friend had finished building this SU 27 and maiden it today at tuas.
Here is some of the findings of this kit and landing gear.

1. C.G point stated, out
2. Landing gear position stated in instruction manual, out
3. Those landing gears cant even hold the weight of the plane (Broke) when landing (he did even glass the plane) see pic attached.

We tried to R.O.G. this baby but no matter how we tried, it just dont wan to take off.. so we decided to hand lanuch it, first try, took off but C.G out.
When he landed it guess wat, landing gear broke (weak materials used)
anyway, We took out those landing gears, changed the C.G. and hand launch it. On second attempt, flew very well with just a few clicks on the trim.

After the maiden, it really make me think twice to try out those landing gears on mine, as my plane will weight around 1kg (glassed).
I think i will use other gear instead.

Anyway, Here are some video clips of the maiden.

Take off - http://www.daddyhobby.com/gallery/sh...500&ppuser=652

Fly pass- http://www.daddyhobby.com/gallery/sh...500&ppuser=652

[ER69]

Reposition of landing gear

After my friend's maiden on this SU27 last weekend, I decided to reposition the main landing gear closer to the C.G point rather than the position stated in the instruction manual.
Well, Instead of using back those "weak" landing gear for this kit, I had made my own out of some steel rod.

[ER69]

Here are some updates on the landing gear and tailerons.
Tonite, I will work on the DF units

[Frank]

nice

[ER69]

Df

Managed to sit in the DF units, servo in place.
As for now, i am still waiting for one more CC45 ESC to arrive at my door step, should be anytime this week.

[ER69]

Make room for batts

I had cutted away those bulkhead to make room for the batts, as i will be using 3s2p1800, To strenghten it, I added some balsa at the bottom of the turtle neck.

[ER69]

Wings

Here comes the wings part, I had added some carbon rods to support those wings.

[ER69]

Looks more like a Jet now ya..
Well,got to stop at this stage, as i just relised that i ran out of finishing resin to glass the top of those wings and cockpit cover,
Will get it tommorow and resume to build.

[Blackite207]

Dear ER69,
I think I know why the plane refused to take off during the run.
The intake ducts are too close to the ground and causes a "suction" low pressure area under the belly of the plane. You have 2 ways to correct this. 1) have a longer landing gear and 2) build in a higher angle of attack by increasing the length of the front gear.
If it happens again, at high speed, cut the trottles, pull full up and be prepaired to release back pressure on the sticks and hit the trottle again once airborne.
Good luck on the next flight. The Flanker is looking good!
Cheers!

[ER69]

Dear ER69,
I think I know why the plane refused to take off during the run.
The intake ducts are too close to the ground and causes a "suction" low pressure area under the belly of the plane. You have 2 ways to correct this. 1) have a longer landing gear and 2) build in a higher angle of attack by increasing the length of the front gear.
If it happens again, at high speed, cut the trottles, pull full up and be prepaired to release back pressure on the sticks and hit the trottle again once airborne.
Good luck on the next flight. The Flanker is looking good!
Cheers!

Hi Blackite207,
You are right, That's one of the reason why my friend's SU just refused to R.O.G.
Another thing is that he had placed the main gear too far from the C.G. point Thats why cant take off.
Anyway, I had re-located the main gear closer to the C.G and also make them slightly longer.
I didnt increase the angle of attack coz i wan it to looks more scale looking.
Hope R.O.G will works on mine..
Thanks for your advice, I really appreciated it.
The reason why i post all my building thread coz i need Flyers like you to correct and advise me on any mistake which i had made during the building process.
Once again, Thanks a lot

[Blackite207]

No problem Bro.
I was a pilot once upon a time.
I made an su27 out of depron from Green Air Designs. Flew great but was very fast. Burned the speed 400 on the 5th flight coz I ran the 6v sucker on 11.2 3S lipos. Was a good test bed for my next project. Building a 150% F5 (glory days) found on the free plans page
http://www.parkjets.com/free-plans.html.
They also have EDF planes that look really cool. Check it out if you have not already done so.
Good luck on your next flight.
Cheers!

[ER69]

No problem Bro.
I was a pilot once upon a time.
I made an su27 out of depron from Green Air Designs. Flew great but was very fast. Burned the speed 400 on the 5th flight coz I ran the 6v sucker on 11.2 3S lipos. Was a good test bed for my next project. Building a 150% F5 (glory days) found on the free plans page
http://www.parkjets.com/free-plans.html.
They also have EDF planes that look really cool. Check it out if you have not already done so.
Good luck on your next flight.
Cheers!

Cool..
All the best Bro.