View Poll Results: Builders likes; FFF or Depron Aero or Dollar Tree Foamboard or Depron or EPP
I would rather build with FFF because of its low cost regardless of its quality 32 31.68%
I would like a better quality foam like Depron Aero, even though the cost is significantly higher 14 13.86%
I will continue to buy Dollar Tree foamboard and peel the paper. 17 16.83%
I prefer regular Depron over the above choices. 29 28.71%
Give me EPP, its gotta take a pounding. 9 8.91%
Voters: 101. You may not vote on this poll

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Oct 06, 2011, 10:06 PM
Ken's CAD Models
dz1sfb's Avatar
Thread OP
Build Log

Embraer Tucano VLF Style now with free plans

Hello friends,

Many have followed the SEMFF Combat planes thread, and this is such a cool plane I just had to model it VLF style.

This time she is 7 layers thick and is a 4 channel bird with dual aileron servos. That means we can mix in some flap as well. It could be built with a single aileron servo and elevator only to keep it light if desired.

Power will be through a TP2408-21 or 2208-12 motor on a 7X5 APC prop and 1000 mAh 3s for the gas tank, and is accessed through the canopy. Wing area is 150 sq. in. with a KFm2 airfoil.
(Motor ended up being one of bz1mcr's ( KEDA Blue Wonder clones 1700 Kv. Flys well on a 850 mAh 2s and is stellar on a 750mAh 3s, with an APC 7x6 prop)

I love the Brasilian Air Force airshow team colors. Here are few screen shots. The cut file is nearly finished and I will likely cut the test kit on Sunday.

This one will sand out very nicely. Though it will be narrower than scale, it will look great as many have found this method yields some super looking models.

Stay Tuned,


Edit 16-JAN-2012: Plans added to post #4
Last edited by dz1sfb; Jan 16, 2012 at 02:48 PM. Reason: Updated motor, prop, and battery spec's
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Oct 06, 2011, 10:16 PM
Ken's CAD Models
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Thread OP


06-OCT-2011: 3D math model and part patterns completed.
07-OCT-2011: Cut files completed and test kit cut out.
08-OCT-2011: Happy Sabbath!
09-OCT-2011: Generated another wing configuration for a full airfoiled wing. Will cut test parts tomorrow.
12-OCT-2011: Gluing and sanding for a couple of days. Got the entire airframe assembled. Now its time to add some filler blocks in the nose, mount the motor, and finish it up to the spinner.
19-OCT-2011: Gear is installed and control surfaces hooked up. Could be test flown at this point. I have a Keda 1700 Kv Blue Wonder clone. CG is a little nose heavy but the paint will offset that. Weighed it without the control horns and pushrods yesterday. She tipped the scale at 198g sans battery.

Last edited by dz1sfb; Oct 19, 2011 at 01:12 PM. Reason: Updating
Oct 06, 2011, 10:17 PM
Ken's CAD Models
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Thread OP

Painting and finishing

20-NOV-2011 Starting to get some paint on this bird. I sure have enjoyed flying it so far. For now I got the canopy finished and have some pics detailing how that is accomplished.

03-DEC-2011 Got some painting done this week and expect to be finished by the end of next week. I have really enjoyed taking my time on this project. Life has been pretty busy ATM, and I hate get stressed with this stuff.

Last edited by dz1sfb; Dec 23, 2011 at 04:33 PM. Reason: updated
Oct 06, 2011, 10:18 PM
Ken's CAD Models
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Plans now available

So here are the long awaited plans. In full sheet and tiled letter and A4.

Last edited by dz1sfb; Jan 16, 2012 at 02:45 PM.
Oct 06, 2011, 10:19 PM
Ken's CAD Models
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Thread OP

Tucano maiden a whopping success!

Maidened the Tucano today running the 1700 Kv BW clone that I got from Initial test was with a 2s 850 mAh Turnigy Nanotech battery, and the flight was smooth and solid once I got the ailerons and elevator trimmed. The propeller is a APC 7x6E. AUW with this battery is 250g.

I had a 750 mAh 3s 20C Rhino battery that slipped very nicely into the battery pocket. So lets give it a try. My only real concern was overheating the esc and or motor. After hauling around for 5 minutes I brought her in and the motor was mildly warm. It was hard to tell since its completely closed in. Bottom line was rock solid unlimited vertical as well. AUW with this battery is 275g.

Flight characteristics:

1. Slow speed flight felt steady without tipstalling.
2. Cruising speed, plane tracks very straight without the nose pitching up.
3. Full throttle felt like flying a pattern plane. Very slight positive pitch and roll stability. Me like !
4. Landing was very nice even without the flaperons deployed.
6. Flaperons generated extra lift and slower speeds, but made it drop like a rock. Suppose they should. I will dial them back a bit to get them tuned in.
7. Aerobatics tried were rolls, loops, cuban eights, and knife edge flight. All easily performed, though my knife edge flying is a bit rusty.

The esc here it a 10A Hobby King unit. The BEC is rated for 1A I believe, and I was running 4 HK 10g servos. Would like to upgrade the esc just for a better margin of safety against failure.

Last edited by dz1sfb; Oct 24, 2011 at 09:41 AM. Reason: update
Oct 06, 2011, 10:31 PM
Registered User
SNice's Avatar
Awesome! Subscribed! I am really digging this series of models! Gonna have to put one on the build list.... but there are so many to choose from! Thanks, Ken!!!!
Oct 07, 2011, 07:54 AM
Fly low...Feel the high!
computerdag's Avatar
Just might have to build this when I finish my AT-6 project.
Oct 07, 2011, 09:09 AM
Kevlar's Avatar
Depron? EPP? 3MM? 6MM?

I have lots of depron in 3MM and 6MM

Oct 07, 2011, 09:16 AM
New in the game
Remko's Avatar
Oct 07, 2011, 09:26 AM
Ken's CAD Models
dz1sfb's Avatar
Thread OP
Originally Posted by Kevlar
Depron? EPP? 3MM? 6MM?

I have lots of depron in 3MM and 6MM

Hey Kevlar,

Right now it will be Owens Corning Foamular FFF. Figure 5mm. Already thinking to scale up from here 120%. Wingspan is 31" presently, so that could up it to 37.2" going with 6mm Depron or Depron Aero.

Oct 07, 2011, 09:27 AM
Gone Fly'n
planecrazy1969's Avatar
Awesome Ken...looks like another great design...I'll be watch'n
Oct 07, 2011, 04:34 PM
A Day @ a Time - Matt. 6:25-34
ruff1's Avatar
31" x 1.5 = 46.5" -- a nice fit for full-FFF-sheet-width. Tempting... Ken, can you scale up to 1.5? Would the fuselage be shorter than 46.5"?

I'm still working on a Pirahna, this might be a neat winter build, I still have lots of FFF. Work out your kinks then scale 'er up! <<Please>>
Oct 07, 2011, 05:30 PM
Ken's CAD Models
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Thread OP

I already have a 42"er in the works based on this one with a semi box fuselage. That means the core is a box with a few outer laminations for sanding to shape. At least thats the plan at the moment.

Post #2 is updated with a picture of the first kit parts.

Oct 07, 2011, 06:56 PM
Luis Claudio - Rio - Brazil
Luis_Claudio's Avatar
As I love this bird, of course I´ll follow!

BTW: I have two of them!
Oct 07, 2011, 07:41 PM
A Day @ a Time - Matt. 6:25-34
ruff1's Avatar
Originally Posted by dz1sfb

I already have a 42"er in the works based on this one with a semi box fuselage...
Excellent, thanks Ken. Takin care of us who like birds just a bit bigger than 100%. At a 42", that is pretty-much the low-water mark for size at the air field I fly at. My BB42 is actually a 40, but I put her right up there with the others 1.5 to 2x her size and she does well.

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