Glossary » Aeromodelling » R/C Scale Models

Hawker Sea Fury 370 Flyer

The Hawker Sea Fury was a British fighter aircraft developed for the Royal Navy by Hawker during the Second World War. And it is to be the last propeller-driven fighter to serve with the Royal Navy. Its first flight was on 21 February 1945.

Wingspan: 11.7 m;  Length: 10.6 m; Weight: 4,000 kg;  Powerplant: Bristol Centaurus XVIIC 18-cylinder twin-row radial engine, 2,480 hp (1,850 kW).

Critical Mass Sea Fury

September Fury - Sea Fury N232J - serial number 41H609972 was a Bristol Centaurus powered MK 11 manufactured in September 1947.   In 2002 Reno Air Race, September Fury clocked a 468.266 mph piloted by Mike Brown.

Scale 370 Park Flyer Class

I only do park flyers, 36" (880mm) wingspan or less because I only have parks to fly in.

1/12 Scale 370 Flyer: Wing Span: 34" (864mm); Weight: 450g; Motor: Outrunner 1100Kv Brushless Motor + 30A Brushless ESC + 1300mAH 11.1V LiPo Battery; 8x6 two blade prop.

1/12 Scale 370 Flyer: Wing Span: 34" (864mm); Weight: 17oz. (490g);  Motor: 370  4:1 Geared Motor + 30A Brush ESC + 1300mAH LiPo Battery; 9x7 two blade prop. Or Motor: GWS BL2215/126 ; ESC: GWESC25A; 3 cell 1300-2200 LiPo.

Power Plant Specifications:
Motor Size: Park 370 BL Inrunner or Park 400 BL Outrunner
Gear Ratio: 5.33:1 with 12T pinion (Pinion Gear, 12T 0.4 Module 2mm ID; Gearbox V2,5.33:1 0.4 Module)
Prop Size: 10 x 7 slow flyer
Speed Control : 20A Brushless ESC
Recommended Battery: 1320mAh 2 or 3-Cell Li-Po
Control Throw (Ailerons): 1 / 4 in (6mm) Up / Down
Control Throw (Elevator): 5 / 8 in (16mm) Up / Down
Control Throw (Rudder): 1 / 2 in (12mm) Right / Left
6" Servo Extension & Y-harness

Specification
Voltage range( V ): 6-10cells / 2-3s Li-poly
RPM per volt (RPM/Volt): 1100Kv
Dimensions (mm/in): 28.5x24.1 / 1.12x0.95
Shaft Diameter (mm/in): 3.175 / 0.125
Max.efficiency current(A): 4-12A
Current capacity(A/s ): 14A/60s
Internal resistance(mU): 180mU
Weight(g/oz): 43/1.5
Max. Surge Current(A/s): 14A/60s
Recommended Propeller: 8x3.8, 8x6, 9x6, 10x4.7
Equivalent:
Motrolfly 2210-1080
Atlas 2308/34
AXI 2208/34
Dualsky XM2826CA
E-Flite Park 370 1040Kv (Prop Range: 9x4.7 to 10x4.7)
Hacker A20-26M
Himax HC2808-1160
Hyperion Z2209-26
RimFire 28-26-1000
Scorpion S2208-34

E-flite Park 370 brushless motor (EFLM1000), 20-amp ESC (EFLA311) and 1320mAh 3-cell Li-Po battery pack (THP13203S). For a direct-drive alternative, try the Park 400 Outrunner series (EFLM1305).
Recommended Battery:     860 - 1320 mAh 11.1V Li-Po
Speed Control:     20-Amp Brushless
Approx. Flying Duration:     10-15 minutes
Control Throw (Rudder):     2 1/2" Left / 2 1/2" Right
Control Throw (Elevator):     2 1/4" Up / 2 1/4" Down
Control Throw (Ailerons):     2" Up / 2" Down
Prop Size:     12 x 6 (included) or 11 x 4.7 or smaller for Outrunners
CG (center of gravity):     3/8 - 1 3/4 in (10 - 45 mm) Behind Wing Spar
Motor Size:     Park 370 Brushless, 4100 Kv or Park 400 Outrunner, 940 Kv
Flying Weight:     12 - 14 oz (340 - 400 g) w/ Battery
Wing Area:     345 sq in (22.2 sq dm)
Overall Length:     37.5 in (950 mm)
Wingspan:     37 in (940 mm)
See: http://www.gregcovey.com/aerobati.htm

370 brushed motor, 3.67 gearbox and 7.5 x 5 prop power set. WattAge IC-15A electronic speed control, and a WattAge 8-cell 800mAh NiMh battery pack.  It draws a max of 7 amps. 7 amps times 11.1v from my Li-poly battery gives 77.7 watts.

KMS 31/21 Brushless Motor 51g 1750Kv with a GWS 8x4 DD prop on a 3 cell 1240 mAh. 10 mins flight time.

So, a 400 motor was intended to fly a 400 gram, or ~14 ounce airplane.
The other naming convention used by Astro and others, 05/15/25 etc, was originally intended to refer to the equivalent glow motor size. I.e. 25 is in theory equivalent to a glow .25.

Wingspan: 31"
Length: 34"
Weight: 12-13 oz.
Motor: Ultra-RC Brushless-20 Electric Motor
ESC: Ultra-RC 30 Amp Electronic Speed Control
Battery: Ultra-RC 1200 mah 11.1 volt 10C LiPo
Prop Size: Included with 11x4
Servos: HiTec HS-55

GWS foam Formosa F3A.
Wingspan:39.8 in
Wing Area:260 sq in
Motor:EPS300C Power System
Battery:270mAh or 600mAh 7.2V battery pack
2 micro or mini servos, micro electronic speed control, micro receiver, and 600mAh battery
Cobri 20 10T-68T      3s Tanic 1550      APC 9x6E
AXI 28/14/10 with a 1500mAh Kokam 15C for roughly 10 minutes of pure adrenaline.
Mega 16/7/8 with a GWS D gearbox (3:1) and a 9x9 prop
CC Mamba 5400Kv motor, 48g (initial inrunner on gb, later used a little 1400Kv outrunner blew it away)
CC P10 ESC (configured to take up to 15A bursts) ~10g
3s TP1320mAh, 85g
9x7 prop (stock cheap orange GWS swept blades)
62T/10T = 6.2:1, ~12A WOT max 55mph, 25oz static thrust
(calc estimates, final GWS HD 9x7.5 screen shots)EDIT: Upgraded power system to a ~10$ outrunner 2826/10 1400 Kv 47g (+30A ESC ~$25) on GWS 9x7.5 HD prop  (black), it's a 10min rocket ship near 420g including 3x1320mAh packs (still under 15A on a CC-P10 ESC). More fiddling to fit with a prop saver but is much faster than previous inrunner/gearbox combo .
- No Landing Gear.
- Cut ailerons and elevator to wing tips (extra ~20mm per control surface).
- Cut extra rudder into the top of the tail, like an inverted 'L' shape to include the area where the stock tail decal goes.
- Twin aileron servo's, so I can play with aileron flaperons, spoilerons and aileron differential DX7 Tx settings.
Turnigy 35-30C kv 1100, 77 g
LiPo 3S1P 1800 MAh, 170 g
Prop 9x6
Esc Turnigy Pentium 30A
Servo 3x Emax ES08A 8,5 g
Power Up 450 motor
32 amp Power Up ESC
Castle Creations BEC
GWS 1060 prop
SG90 servos
JR 6110 rx
3s 1800 battery

Model Plane from about 100W to 300W. I'd want to stay very light on 100W (say 360g/13oz or less) for use in reasonably calm conditions and small spaces. I'd be looking for a prop in the range 8x4 to 9x6. I've flown one like this and it was fun flown close in when there wasn't much wind.

At the other end of the scale, say 300W, you'll probably want to reinforce the airframe and the weight with suitable cells, motor and adequate servos will probably be more like 550g+ (19.5oz+). This plane would be much faster at high throttle but slow speed handling will suffer. It'll also handle wind better due to higher inertia and speed. It'll be best suited to large aerobatic manoeuvers in open spaces. I'd guess the best prop will be somewhere in the range 7x4 to 10x6 depending on how you want to it to fly. The best power system for most purposes, including speed, is one that has a geometric pitch speed (pitch measurement x RPM) slightly higher than the desired flying speed. So if you want to fly 60mph it might be reasonable to prop for say 65mph to 70mph pitch speed.

Updated On: 18.10.15