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Posted by Old_Pilot | Aug 10, 2015 @ 06:25 AM | 874 Views
After the stellar performance of the TU-47 1/2 (a Walmart Predator glider with twin 2200's), I fell in love with twin engine aircraft. So I mashed together an Argentine Pucara, an OV-10 Bronco, and a foamie I found on RCG called the Jackal, and came up with this.....

I call her the Jacara......

....I took what I liked from each, changed the airfoil, feathers, canopy, and fuse (just a little), upped the WS, motors, props (APC E 6x4), and battery (like I would build anything the way the plans say I should). She'll be a slab fuse and feathers, and a built up DF-101 airfoil wing. Motors are 2217K-7 1250 kV's, 30 amp ESC's, a 3700 mah 3s 40 C, a 6-channel Lemon Featherlight recvr, and Tower Pro MG90s....haven't decided on landing gear yet.....Will trim the ailerons down a bit and make them flaperons.
Posted by Old_Pilot | Jul 30, 2015 @ 03:18 PM | 1,170 Views
She flies !

CF 105 Ver 3 Maiden (2 min 56 sec)

Posted by Old_Pilot | Jul 27, 2015 @ 06:08 PM | 1,660 Views
A few changes from Version 2.0......maiden will probably be Thursday

30" WS x 40" OAL x 46 oz AUW
3/16" Elmer's board
KFM-2 airfoil
83% thrust cone (hybrid nacelle/fan mount)
(2) 70 mm 5-bladed Dynam fans with 3000 kV motors
(2) 50 amp ESC's
(2) TowerPro MG 90 S servos
(1) Lemon 6-channel Featherlite receiver
(1) 3700 mah 40C 4s battery
Posted by Old_Pilot | Jul 20, 2015 @ 05:26 PM | 1,812 Views
The first time I tried to make this airplane fly didn't turn out like I wanted.......it could almost barely drag it's butt into the sky.....embarrassing to say the least....Version 1.0 had a single 70 mm fan....... Version 2.0 has (2) 70's that I moved outboard of the fuse.....AUW with a 3700 mah 4s is 48 oz....maiden tomorrow

Update: Got taken out by ingesting a dragonfly or two into the starboard fan...it exploded and Version 2.0 hit the ground hard.....broke her all to pieces. Got two good passes in over the field and was going for my camera, when a swarm of dragonflies descended on the runway....you can still see the bug juice on the inside of the fan housing.
Posted by Old_Pilot | Jul 13, 2015 @ 09:29 PM | 1,849 Views
Got bored and built this today

2217-6 1250 kV 8x6 2200 mah 3s 40A ESC

30" WS x 24" oal

28 oz AUW

114 w/lb
Posted by Old_Pilot | Jul 11, 2015 @ 03:02 PM | 1,216 Views
real easy to fly, plenty of power, added a bit more rudder throw, and she'll knife edge..........if you notice, you only hear three clicks of trim..flew her all morning

Ugwi Stik Maiden (4 min 50 sec)

Posted by Old_Pilot | Jul 07, 2015 @ 07:59 PM | 1,300 Views
flight ready

Power specs:

Power Specs on the Ugwi Stik

Motor: (Value Hobby)

The G32 (42-50) brushless out-runner motor can replace a .40 - .46 two stroke nitro engines and is equivalent to E-Flite Power 32 / AXI 2826. It is capable of producing up to 6 lb of thrust and generate about 720W of power.

Specifications:
•KV: Listed as 800, tested to be approx. 810.
•Weight: 7.54oz (214g) for motor only, not including mounting accessories.
•Motor Diameter: Approx. 42mm
•Shaft diameter: 5 mm
•Max efficiency: Approx. 40A
•Max Load: Approx. 50A

Motor Dimensions (see below)

•60A brushless motor ESC
•3-4S LiPO and at least 3300-4000mAh.
•Prop Selection: Remember to always use props designed for electric motors, nitro props are heavier and might overload the motor.
With 4S LiPO: 12x6 or 11x5.5 or 11x7 (I'm using a 12x5 XOAR)
With 3S LiPO: 13x6.5 or 13x8

AUW 60 oz with a 2200 mah 4s

192 watts / lb......I think she'll fly.....with or without wings......LOL
Posted by Old_Pilot | Jun 25, 2015 @ 06:38 AM | 1,298 Views
Making an "Ugwi Stik" out of a sig Kiwi.........

Read through the instructions and reviewed the plans...here's what's going to change (so far) : Inboard third of the wing will be flaps, outboard two-thirds will be ailerons cut from 3/16 sheet.....all scalloped. Same for the stab. Wing tips will be built-up to match the Stik's wing. Servos will be wing mounted. Wing will be built one-piece flat or with just a touch of dihedral. She'll be built as a tail dragger with a steerable tail wheel. Since she's going to be electric (GForce G32 Brushless Outrunner Motor (4250-800KV)) the firewall and motor mounts will have to change, but I'll wait until the motor arrives to make those changes....the rest of it is pretty straight forward......now, where are my X-acto's ?...Continue Reading
Posted by Old_Pilot | Jun 16, 2015 @ 05:16 AM | 1,580 Views
Forgot to post this.......it's the maiden of the Raptor gilder conversion

TU 475 (3 min 49 sec)

Posted by Old_Pilot | May 26, 2015 @ 10:46 AM | 1,824 Views
Smaller airframe......bigger fan

OK....here's how we set the rates and expo:
Ailerons:
R=30/E=20, R=45/E=25, R=70/E=25...flew the ailerons on low rate
Elevator:
R=40/E=25, R=60/E=25, R=80/E=25...flew the elevator on mid rate


StealthStream 5 Maiden Flight (4 min 47 sec)

Posted by Old_Pilot | May 24, 2015 @ 11:27 AM | 1,489 Views
One of our club members is retiring and moving to Arizona....so he brought most of his fleet to our Fly-in yesterday...I got this for almost nothing.. freshened the paint and will re-trim it this week.....supposed to be windy and rainy until Thursday
Posted by Old_Pilot | May 20, 2015 @ 03:10 PM | 1,728 Views
A few of us had a kinda sorta contest to come up with an RC version of the $10 Wal-Mart foam glider called the Raptor......I decided it needed to be a twin, and now sorta looks like the TU-95 Bear....but with only 2 motors....so it's called the TU-47 1/2 Cub.....Started on it Monday....waiting on CW/CCW props and 20A ESC's....but that's why I like to mess with foam....motors are 2200kv Grayson Mini Jet, 4.75x4.75 props and a 2200 mah 30C 3S.....we'll...Continue Reading
Posted by Old_Pilot | May 07, 2015 @ 02:43 PM | 1,719 Views
Posted by Old_Pilot | Apr 14, 2015 @ 06:02 PM | 2,644 Views
Just finished this one....cut her out yesterday morning.....tweaked a few dimensions here and there from the first design.......

Video of maiden

Einzpfeil 3 70 mm Fan (3 min 23 sec)