I have one baby ringer with the following:

Scorpion 2205/1585KV motor
APC 6 x 4 pusher prop
Rhino 610 mAh 3s
Arrowind 12A ESC nongoverning
Hubin FM-0c timer factory preset to a 7 second delay before the system starts, full throttle, and 3 min flight

7.9 oz AUW

This gives me a 3.3 second lap on 35 ft lines. It goes through wingovers wonderfully and loops well but in lazy eights it does slow down a bit.

I am about to finish another baby ringer. This one will have a 2205/1900KV motor for more speed and thrust. The same type of ESC and timer will be used.

This CHUPIM 60 KIT  -  by OSNI LEME - SERITEC
Builder – OSNI LEME

Motor: Cobra 3520/14 - 700 kV

ESC: Castle Creation 50 Edge Lite

Timer: C/L Timer by Fiorotti - Active acceleromer

Prop: APC 13X4,5 P

Lines: 0.018 x 18,5 m

Battery: Zippy Compact 2700mA - 25C- 5S

Lap time: 5.2 sec.

Flight Time   5.10 min.

Airframe:
Jr. Flite Streak (Brodak)
Span 31"
Area 230sq.in
Weight 19.9oz RTF with battery
Wing loading 12.5oz/sq.ft
Silk/Dope finish

Power plant:
Motor: Turnigy SK3-2836-1500; 1500rpm/V; 0.65A no-load; 0.026 Ohms.
Battery: Turnigy NanoTech (45C); 3 cells; 1800mAh
Speed Control: Castle Creations Talon 35
Prop: APC 8x6E
Timer: Hubin FM-9

Settings:
RPM set at 11660 to get actual 10440
Current: 22.7A peak
Watts: 243.5W
Power Loading: 205 W/lb
Flight time: 4 min leaves battery at 3.75 v/cell (23%).
Lap time: 4.1 sec on 52' lines (good for Flite Streak style of flying; any slower and it's loose overhead).

Ultra Hobby Gieseke Nobler Component Kit converted to electric.
Arrowind 2820/07 motor
Arrowind 40A ESC
FM-Oc Rem Hubin Timer
4 Cell 3300 mAh battery
Graphics by Avaiojet

Here is the result of my attempt to build a fixed gear airplane specificly laid out for pusher prop use. Reason was that I have repeatedly experienced difficulties (e-hunting) trimming conventionally laid out airplanes for stable tracking in level- and inverted flight while being flown with pusher props. "Conventionally" meaning motor and empennage 1 or 1 1/2 in above the wing centerline. Wishing to maintain the very noticeably positive effect on line tension of the pusher propeller in outside turns and in the upper segment of the hourglass manoeuvre, switching back to tractor props was not really an option...

In an attempt to compensate level/inverted flight disturbance forces resulting from the propeller/spinner/rotor assy. rotating clockwise (Pusher) and affecting tracking stability in level and inverted flight, I have adjusted the vertical positions of the drive train components and the empennage accordingly. In order to do so it was first neccessary to quantify disturbance forces and compensating measures. This could not have been done without Wolfgang Nieukamp's much appreciated calculations quantifying in-flight propeller gyroscopic forces and resulting moments. From Wolfgangs findings, I have arranged those components accordingly:

- Motor vertical thrust axis angle (2.5° up)
- Motor vertical thrust axis distance from wing centerline (below 10 mm / 3/8")
- Stabilizer angle of attack (1° down)
- Rabe rudder functionality (out with elevator up)

While the dimensions of wing, empennage and the arms are borrowed from Igor's Max Bee, the fuselage was respectfully shaped in memory of the Italian Fiat C.29 1000 hp racing floatplane from the 1929's.

Findings:
The airplane tracks equally nice in horizontal and inverted flight without any e-huntig tendency. Corners and exits are solid with stable exits. Turning rates are equal. Hourglass overhead line tension is good.

Spec. sheet update:
June 2nd 2018:  Flaps / Elevators set to 36° / 45°. Prop Fiala E3 Electric Pusher, Wood. 2-blade 13 x 6 at 9'240RPM and 5:20 min run time.  C.G. at 183 mm / 7.2 in. Leadout centre 32 mm (1 1/4 in) rear of C.G. Handle spacing 102 mm (4in). Governor Gain set to Medium 25, timing to Castle "Low 0" and PWM rate to "Castle Outrunner". Lines 19.5 m / 65 ft)  (0.4 mm / 0.015") Yatsenko brass coated,. Laptime: 5.2.  Re-charge 2'300 mAh (calm)

Rgds, Peter Germann 

April 3rd: 20° C calm. No e-hunting and very noticable line-pull build up in upper loop of vert. 8 and first inside loop in clover. Sharp corner with clean exit.

June 4th 2018 26°C, calm: Fiala wood 13 x 6 E3 pusher  9'645 RPM set, 5.15 sec/lap Tighter corner with clean exit when compared to APC 13 x 5.5 EP. 2'100 mAh recharge after 5:20 flight run time on 0.015 x 64 ft. Yatsenko lines.

July 17th 2018 28°C, very light wind: 52nd from 85 at 2'018 W/C in Landres, France.

August 28th 2018 26°C, calm: APC 13 x 6.5 EP pusher at 8'400 RPM constant speed, logged, 5.2 sec/lap. Sharp corner with clean exit. Lower RPM reduces energy consumption to 1'900 mAh recharge (79%) after 5:20 flight on 0.015 x 64 ft. Yatsenko lines.
62°C ESC temp.

I have a full set of detail and assembly (metric) drawings. All are .pdf and available on request for free.

Imitation profile from Mike Griffin and Eric Rule at RSM. 

Power:  Cobra 2826/12  760 kv

Battery:  Thunder Power 5S 2800 Pro Lite

ESC:  Castle Creations Talon 60

Timer:  FM-9 profile timer from Will Hubin

Prop:  APC 11 X 5.5

Flying weight:  49 ounces

Lines:  .015 X 61' eyelet to eyelet w/Fancher handle

Finish:  Ultrakote and Krylon paint

Still in trimming and very early flight stages, will provide more information about flight characteristics when available.

Zero Profile based off Bill Bischoff design
49" wingspan 453 Square inches
Hobbyking film covering
naca 0016 airfoil
Cobra C-2826-EF1-SS
APC 8x8e prop
4cell 2200 battery
Cobra 80A ESC
60' .018" lines from handle to center of model
Hubin  Fm-9
Throttle mode 100%
2' 15" run time
3.4 sec. lap

REVOLUTIONS
Wing area 710 sq inches
Flying weight 58-59oz
Motor JOKER 4250-8 V3 510 KV   210g  1150W
Battery TP 6S 2800mAh
Timer IGOR ACTIVE
Prop XOAR 12X6 2B
Line length (eye to center) 68ft
Flight time 5min 30sec
Lap speed 5.4sec
mAh used 1450mAh max.

Top Flite ARF Nobler converted from OS.35 to electric:
500 square inches area
Weight 52 oz ready to fly
60 ft center to center lines, diameter.015 in
5 min 20 seconds flight time
4.625 seconds per lap time
Motor Rimfire.32 800 kv
Battery 4 cell 2200 mAh Lipo
ESC Brodak/Hubin F2B Hornet 60 A
Timer Brodak/Hubin FM Hornet
Prop APC 11x5.5 E tractor
9660 RPM
25 Amp draw
352 Watts
Used/charged back 2000 mAh

Jerry

Top Flite ARF Nobler, same model, as in previous post.
52 oz ready to fly
60 ft handle center to model center
5 minutes 20 seconds flight time
5 seconds per lap time
Motor Rimfire.32. 800 Kv
Battery 4 cell 2200 mah lipo
ESC Jeti Spin 66 , preset in 3D helicopter mode
Timer by Igor Burger. Thank you, Igor, instructions are very clear and user friendly!
Prop APC 11x5.5 E tractor
9750 rpm
Used/ charged back 1778 mAh.
Igor's system is more efficient than Hubin/Brodak system.

Jerry

S1 Ringmaster built from Tom Morris design kit

Cobra 2221/10.  (3.2 oz.)
Cobra 33 amp esc (1.75 oz.)
Fm9 timer
Hyperion 3S 1800 mah (4.2 oz.)
ASP 9x6 EP
Total Weight ready to fly-25 oz.
0.12x56 ft. Lines
Great flying RM at this weight- ( Thanks Tom!)

PointsFinder EP
Based on a Pathfinder wing and stab, Starfinder wing and stab tips, and a Resolve EP fuse profile.
620 sq in wing area
54.0 oz ready to launch
Cobra 3515 Kv740 motor
Talon 35 ESC set to "insensitive"
Hubin FM-9 timer
Zippy Compact 5S 3000 Lipo
APC thin electric pusher 13x5.5 cut down to 11.5.
5.2 second lap time
.015x60' eye to eye.
2,000 mah used (estimated at this time)
"zero zero" with +1/2* upthrust, 2 1/2* right thrust, about 3/32 right rudder initial setup.

Like those control horns!

Primary force (Mikey Pratt design/kit)

502 sq. in. wing
Brodak RM conversion Battery box
Arrowind 2809/15 motor, APC 11x5.5 cut down to 10 3/4"
Castle Talon 35 ESC
ThunderPower 4S 2200 mah lipo
Hubin FM-9 Timer (5min. 25 sec. flight time) 25% battery cap. left
ready to fly weight trimed out=38 oz.
58 ft. 0.012 lines,  5.3 lap

Otto the Giro from Dick Mathis plans

32 1/2oz
Cobra 2820/14 840Kv
Generic eBay 40A ESC
Zippy Compact 4S 2200 lipo
APC 10/6 electric pusher
Open source CL timer
Rustoleum rattle can finish

Yet unflown due to weather

I am behind in listing my setup.  Currently, my setup is:

Somewhat modified Impact (Predator in sheep's clothing) with Igor nonlinear flap mechanism
Plettenberg 20-16 motor
Thunder Power Prolitex 6s 2800 mAhr battery
Jeti Spin 66 controller
Igor active timer
Tim's Universal Timer (TUT) to provide supplementary modes
Battery Indicating and Crew Alerting System (BICAS)
Igor 12" prop, traditional rotation direction
Homemade carbon battery rails
Homemade motor mount
Homemade spinner
Homemade carbon landing gear
Homemade handle
Zigzag boundary layer trip strips
Cage-free artisanal vortex generators

Quote from: Darkstar1 on December 20, 2009, 03:24:54 PM
Modified Eratix 3D Plane
This plane was originally posted with a different setup, but since I snapped the outboard wing off. I will list the changes that made it work this time.
Weight: 66oz
Motor: Rimfire 42-50-800kv
ESC: Castle Creations Ice 50
Timer: Hubin FM-2A
Prop: APC e-prop 12.75 x 4.5
Lines: .015 x 63.5 Eye 2 Eye

What battery are you using? I have a motor the same size and KV by HobbyStar. I am probably going to run 5 cells.

 S1 Sterling Ringmaster

34oz with a BadAss 2814  980kV motor on a HobbyStar 4S - 1800mah pack. ESC is a Castle Creation 35A Talon, timer ZTron. I run an Master Airscrew GF 10x7 (re-pitched GF 10x8) flat back prop at 10,000rpm, on 60' FINS 40G 45LB Test (C to C) Spectra lines, 4.79 sec lap time. For full OTS pattern (4mim: 41sec motor run time) it pulled 1415mah out of 1800mah pack. The MAS GF 10x8 re-pitched to match the MAS GF 10x7) has a 1/16" wider blade and pulls the ship like a Mack tuck. The MAS10x7 is also very good if re-pitching is not your thing.

The FINS 40G 45Lb Test Spectra lines are very low drag and saved ~2% battery capacity compared to 0.012" stainless steel cable that would be used with this size/wt. ship.

Quote from: Dennis Toth on March 26, 2022, 06:39:00 AM
S1 Sterling Ringmaster

33oz with a BadAss 2320  820kV motor on a Thunder Power 5S - 1350mah ProLite pack. I run an APCE P - 8 1/2x6 3/4 prop (cut down and pitched up APCE P 9x6) at 9650 rpm, on 60' FINS 40G 45LB Test (C to C) Spectra lines, 4.75 sec lap time. This setup save about 1 3/4oz over the commonly use 1800 - 2200 packs. The FINS 40G Spectra lines are very low drag and saved 4% battery capacity compared to 0.012" stainless steel cable that would be used with this size/wt ship

Den,

ESC? Timer?

Circulas 46 IIe Profile by Dennis Nunes

Motor: BadAss 3515-710 Kv Front Mounted
ESC: Castle Creations Talon 60
   Brake:
      Brake Strength 100% (Hard)
      Brake Delay .6 sec (Delayed) (Default)
      Brake Ramp Very Fast
   Cutoffs:
      Cutoff Voltage Auto Li-Po (Default)
      Auto-Lipo Volts/Cell 3.2 Volts/Cell (Default)
      Voltage Cutoff Type Hard Cutoff
      Current Limiting Normal (Default)
      Current Cutoff Type Soft Cutoff (Default)
   Motor:
      Motor Start Power High (100)
      Motor Timing Custom (4)
      Direction Forward (Default)
      PWM Rate 8 Khz
   Other:
      Power-On Beep Enabled (Default)
      Link Live Enable Disabled (Default)
      BEC Voltage 6.0V (Default)
   Software:
      Device Name Talon 60 (F541)
      Current Firmware V 4.25
Timer: Hubin FM-9 w/Onboard On/Off Switch
   Start Delay: 30 Seconds
   RPM: 9,996
   Flight Time: 5'30"
Battery: Thunder Power 6S 2800 mAh, XT connector

Plane Specifications:
   Wingspan: 56.25"
   Wing Area: 580 sq. in.
   Nose Length: 11"
   Flap to Elevator Hinge Line: 18"
   Weight w/Battery: 67.5 oz.
   Full Length 1/2" High Elevator Wedges
   Full Length 0.010" Thick Trip Strips on Wing and Stabilizer

Other Information:
   Prop: Igor 12x5N 3-Blade Carbon Fiber
   Lines: .018" x 63' 7-Strand Stainless Steel
   Handle: Cox/Resinger Carbon Fiber

For further information on the construction and design of Circulas 46 IIe go to the Flying Lines website: http://flyinglines.org/nunes.circulas46lle.html


Dennis

Model                Top Flite ARF Nobler
Engine               Cobra 2826/12
ESC                   ZTW Mantis 40A
Timer                KR Governor
Battery              Hyperion Graphene G8  4S 2800mA (with HvLi charge)
Battery weight   242 (8.5oz)
lines                  18Mts (60ft)
Prop                  APC  11x5.5  E
Flight Weight     1400 gr (49.3)
lap time            5.1 segs
flight time         5:10 mins (310 secs)  23% charge remains on Battery

The model flight beatiful F2B complete pattern. There are about 5 to 6 remaining laps after the 4-leaf clover   

                         Modified profile of a Legacy 40
Wingspan: 53.75"
Wing area: 565 sq. in.
Motor: Cobra 2826/12 760kv
ESC: Castle Creations Phoenix ICE 50(set in hi gov. mode)
Prop: 11.5x6 ep f2b(cutdown 12x6)
Lines: 62' Spectra 65# lines
Timer: Hubin FM9
RPM: 8763 rpm for a laptime of 5.125 sec.
Flight time: 5:10 minutes
Weight: 47 oz. W/O battery, 57 oz. W/ TP 2800mah 5s

Will update as trim flights progress

Inboard view

- Brodak kit
- Brodak silkspan & dope
- 536 sq.
- Motor: BA 2820-910
- Prop: APC 11x5.5e
- ESC: Talon 35
- Timer: Hubin F9
- Battery: TP 2200 4S
- Weight: 48 oz with battery
- RPM: 9500 according to timer
- Lines: 60 feet, .015
- lap time: 5.?

Plane flys very good.  Good tension overhead on 8s.  Paint sucks but airframe is straight.