Sodium-ion batteries are highly safe, have no risk of explosion and fire, and are environmentally friendly, non-toxic and non-polluting. No memory effect - the battery can be charged in any state of discharge, giving you peace of mind. The working principle of sodium ion batteries is similar to that of lithium-ion batteries, which utilize the insertion and removal process of sodium ions between the positive and negative electrodes to achieve charging and discharging.
Specifications:
Nominal Voltage: 3.1V
Work Voltage Range:1.5V-4.1V
Continuous charge /Discharge current:10C
Operating Temperature:-30°-60°
Cycle Life:More than 4000 times (0.5C/0.5C @80% SOH)
Nominal capacity: 1300mAh
Dimension: 18.3mm(D)65.3mm Approx.
Weight: 38+- 10 g
Advantage of Sodium ion Battery
1. Long cycle life: The cycle is longer, compared with Lithium ion battery, can reach to 4000-4500 times.
2. Safety: Sodium-ion cells can be discharged to 0V for transport, avoiding thermal run-away hazards.
3. High Power: The cells have continuous discharge current 10C Peak discharge current.
4. Low temperature: Can be used in low temperature environments, with a discharge capacity of up to 85% at a temperature of -30 degrees.
5. Wild Voltage range: The working voltage range is 1.5V-4.1V.
6. Environmental abundance: Sodium is over 1000 times more abundant than lithium and more evenly distributed worldwide. So its price is more stable.
7. LOWER COST: Sodium precursors (such as Na2CO3) are far cheaper than the equivalent lithium compounds.
8. Charge on Li-Ion mode set voltage to maximum 3.9-4.1V
This listing is for 1 (one, single cell), multiple cells shown for example only.
Panasonic (formerly Sanyo) KR-1800 SCE .91x1.69, 47g/1.65oz Sub C Fits in screw-apart glow starters. Most popular choice for this application. Manufacturers listed internal resistance is 6.5mOhm.
Furkawa KR-1800SCE Specifications
Battery Cell Size: Sub C - Flat Top
Voltage: 1.2 Volts
Capacity: 1800 mAh
Termination Style: Flat Top (Non-Extending)
Size / Dimension: Diameter: 0.91" (22.9mm) x Height: 1.70" (43.0mm)
Considered one of the most powerful servos in the micro class, the HS-65 is offered with a choice of "shock resistant" Metal or "zero wear" Karbonite gears. The 65 series features a top-ball bearing for long life and positive centering, 31 ounces/inches of power at 6 volts and is an excellent choice for higher performance micro helicopters, electric park flyers, and 1/18 scale cars.
Torque (4.8/6v)
Weight
Speed (4.8/6v)
Bearings
Size SAE
Size Metric
Type
24.99/30.55 oz.in,1.8/2.2 kg.cm
0.39 oz./11.2 g.
0.14/0.11s
1BB
0.92" x 0.45" x 0.94"
23.60 x 11.60 x 24.00mm
Analog
Choose Quantity Option below. Want 1, 2, or 3 servos? Select first option, then enter quantity 1, 2, or 3. Want a bulk discount? Select 4-Pack, then enter how many 4-Packs you want.
Are you having trouble shoe-horn'g a big model into a small car? Does the high cost of feeding a fuel guzzling .60 break the modeling budget? Well cheer up! Here's the answer to these and other big airplane problems. The little Kobra provides "hot dog" performance in a compact, easy to transport size. All of the great flying characteristics of our popular Kougar and King Kobra have been reduced into this junior-size bundle of excitement. The same sleek jet-style look, the same wall-to-wall aerobatic capabilities, the same built-in wing washout for slow speed stability, the same easy-to-build balsa fuselage with the unique formed plastic top - only in a smaller package! Plenty of room inside for standard size radios.
Kit features, Built-Up Balsa Wing, Basic Balsa Box Fuselage Structure, Molded ABS Plastic Fuselage Top, Molded Jet-Style Clear Canopy, Sheet Balsa Tail Surfaces, Formed Landing Gear Wires, Steerable Nose Gear, Full-Size Plans, Photo-Illustrated Assembly Manual, Decals For Both F-16 and T-38 Versions, SIG Easy Hinges, Engine Mounts and Complete Hardware Pack.
Specifications: Wingspan 45 in 1143 mm Wing Area 390 sq in 25 sq.dm Length 39-1/4 in 870 mm Radio Required 4-Channel Glow Engines: .20-.40 (3.1 - 6 sq cm) 2-Stroke Electric System: 300-600 watts (RRC Recommendation)
Notes from Dave: If you want a classic conversion to electric, here are my thoughts on this kit:
Setup and Performance Chart
Motor
# Cells
Prop
Amps
Watts In
RPM
Thrust oz.
Pitch Speed MPH
Climb FPM
Est. Top Speed
Himax HC3528-1000
3
10x7
37.9
426
9,820
51
65
2151
67
Himax HC3522-990
4
9x7
35
525
12,360
58
80
2514
75
Himax HC3528-1000
4
10x7
48.4
732
11,830
77
76
3615
81
Estimates based on manufacturers provided constants using E-Calc. High Quality 2200mah used as trial cell in calculations. Presumed model weight of 54oz. Actual performance may vary depending on components used, accuracy of data as provided by manufacturer, quality of battery, ESC, and many other factors.
Temporarily out of stock, pending manufacturer production
Side By Side, double stick, 7.2V FDK (formerly Sanyo) 6-AA 2500 NIMH cells, fits Multiplex radios. "Twicell" (formerly Eneloop) low self discharge type which comes partially charged and is the same product as prior Twicell (Eneloop) cells. Same size as 700 and 1100 NiCad pack above. Less weight than 1400 NiCads above. Good cell where fast charging is not a needed but extra capacity is desirable. High capacity TX Battery, if you are sick of your TX running down. Yes, it is the same size as your current AA pack. A "AA" is a "AA". This is what your computer TX should have included!
7.2V Weight 234g / 8.25 oz.
Individual Cell Internal Impedance 20.0mΩ
All AA size cells over 1700mAh should not be fast charged ever! If you repeat this experiment, your on your own. I recommend only factory wall wart charging with units rated of 70mAh or less for these type cells.
Break in (first forming charge) on 50mAh factory wall charger 700mAh-19.6 hours,1100-30.8 hours,1650-46.2 hours, 2500-70 hours. For 70mAh wall charger deduct 28% of time, for 100mAh wall charger deduct 50% of time. Forming charge (initial charge) on peak detection chargers is not recommended and voids warranty.
Any peak or fast charger use on this pack voids warranty. Don't bother calling trying to get a warranty for failing to follow instructions. I've heard all the stories. They all end like this, "My battery does not cycle well now." and "It worked ok for a while but now it runs down fast shortly after charging". If you put any AA cell over 1700mAh capacity on your peak charger, it's bad. I've already made theses tests for you so you could avoid the pain. If you ruin one of these mega capacity TX packs, just order a new one and do better the second time.
Himax Brushless motors are manufactured to high standards for the discerning modeler. Designed for light-weight, high efficiency, high torque and durability Himax Outrunner motors are sure to make today's radio controlled models perform. The HC2812 series motors are made for small to medium size models weighing 9 to 20 ounces. Replacement for 370-400 motors. Package includes collet type bolt on prop adapter, prop saver, bullet females for your ESC and fasteners.
Specifications:
Weight
Size D x L
Amps
Shaft
Max Motor RPM
KV
Resistance
No Load Current
60g/2.12oz.
27.8mm (1.09") x 28.9mm (1.14")
2-8, 11 15s
4.0mm (1.574")
20k
650
.285Rm
.36A
Setup and Performance Chart
# Cells
Prop
Amps
Watts In
RPM
Thrust oz.
Pitch Speed MPH
3
10x8
7.7
86
5,420
17
36
3
12x8
11.2
125
4,590
23
34
3
13x6.5
11.7
131
4,470
24
27
4
10x6
9.9
147
7,180
27
39
4
11x5.5
11.6
173
6,750
30
34
5
7x6
10.6
197
13,170
27
72
5
8x4
11.4
212
12,970
33
47
6
7x4
10.5
234
16,160
33
58
Estimates based on manufacturers provided constants using E-Calc. High Quality 1250mah used as trial cell in calculations. Actual performance may vary depending on components used, accuracy of data as provided by manufacturer, quality of ESC, weather and many other variables. SKU Number: MPIHC28120650
GF Nylon Spinners have light weight aluminum back plate. No special prop nut or adapter is required. Spinner is held to back plate with two attachment screws. Machined groove supports edge of spinner. Back plate is knurled on both sides to grip both your prop and prop adapter making it easier to tighten than other spinners of this style. Size 2.25" (57mm) OD. Factory shaft hole in back plate is .252" (6.4mm). Overall Length is 2.265" (57.5mm).
See this and all other new sizes up to 75mm in Spinners-Fixed-Props. Within "E-Power-Everything".
Second from left motor in photo is the 3516 series.
Himax 3516 series motors are most generally used in 34-70 oz models depending on application. Replaces AXI 28 series motors. Manufactured to high standards for the discerning modeler. Package includes collet type prop adapter, prop saver, bullet females for your ESC and fasteners.
Specifications:
Weight
Size D x L
Amps
Shaft
Max Motor RPM
KV
Resistance
No Load Current
134g/4.7oz.
35.2mm(1.39") x 42.2mm(1.66")
15-40,56 15s
5.0mm (.1969")
20k
1350
.023Rm
2.3A
Setup and Performance Chart
# Cells
Prop
Amps
Watts In
RPM
Thrust oz.
Pitch Speed MPH
2
10x10
26
195
7,710
29
62
2
12x10
39.4
296
5,800
42
54
3
8x6
28.2
317
12,880
42
71
3
9x4.5
31.7
357
12,600
50
51
3
9x6
38.5
433
12,040
56
66
3
9x9
49.4
556
11,150
54
98
3
10x5
44.4
500
11,560
65
53
3
10x7
54.1
609
10,770
70
69
3
11x5.5
58
653
10,450
78
52
4
8x4
32.7
491
17,250
60
62
4
8x6
43.5
653
16,260
68
89
4
9x4.5
48.5
728
15,800
82
64
5
7x6
42.5
797
20,980*
70
115
Estimates based on manufacturers provided constants using E-Calc. High Quality 2200mah used as trial cell in calculations. Actual performance may vary depending on components used, accuracy of data as provided by manufacturer, quality of ESC, weather and many other variables. * Over reccomended maximum RPM. SKU Number: MPIHC35161350
Actual KV here measured in our shop is 1207. Motors like this mostly commonly used 3S for sport ship range where moderate to high pitch speeds are required. A motor like this is perfect for many aircraft and commonly used on models from 16-32 oz. A good motor on our Stick 400 and other similar kits.
Specifications As Per MFG:
Weight
Size D x L
Amps
Shaft
Max Motor RPM
KV
Resistance
No Load Current
73g/2.72oz.
27.7mm (1.102") x 35.86mm (1.412")
25.4A (368 watt)
4mm (.159") x 44.9mm OAL
Non-Pub
Actual 1478
Non-Pub
Non-Pub
Setup and Performance Chart
# Cells
Prop
Amps
Watts Input
Lost Watts (Heat)
% Motor Efficiency
RPM
Static Thrust Ounces
Pitch Speed MPH
2
9x7
23.5
176
40
75%
8,150
24
54
2
10x6
27.1
203
50
73%
7,670
28
44
3
7x6
21.4
241
39
82%
13,810
27
78
3
8x4
23.3
262
44
82%
13,540
31
51
3
8x6
29.8
335
63
79%
12,610
37
72
4
6x5.5
20.7
311
43
85%
19,300
30
101
4
7x4
25.5
383
55
84%
18,650
42
70
4
7x5
29.5
443
67
83%
17,940
45
85
5
6x4
23.5
441
55
87%
24,230
43
92
Estimates based on manufacturers provided constants using E-Calc. High Quality 2200mah used as trial cell in calculations. Actual performance may vary depending on components used, accuracy of data as provided by manufacturer, quality of ESC, weather and many other variables.
A123/LithiumWerks Nano phosphate 2S 1800mah Pack 2-#18650 Cells. Finest RX pack technology and cell ever produced. See individual cell listing above for cell specifications.
Standard shape is Flat (side by side) as shown in photo. Stick packs may also be constructed as a "Stick" for narrow use.
There is no optional length for XH balance ends - use XH extension.
Use only Lithium chargers with an A123/LithiumWerks mode limiting charge voltage to 3.6V per cell.
Cell is purple in color as in last photo, same size as the #18650 1100mAh orange cell.
LithiumWerks AER18650M2A2 3.2 V 1.8 Ah Lithium Iron Phosphate (LiFePO4) Battery Specifications:
Manufacturers Part Number 320749-001
Nominal Ratings:
Voltage 3.2 V
Capacity @ C/5 Typical (Min) 1.8 Ah (1.7)
Energy 5.76 Wh
Specific Energy 133 Wh/kg
Energy Density 330 Wh/L
Impedance (1kHz ACIR) < 20 m?
Cycle Life at 0.5C/0.5C, 100% DOD > 4000 cycles
Discharging:
Max Continuous Discharge Current 5.4 A (3C)
Max Pulse Discharge Current, 10s 18 A (10C)
Minimum Voltage 2.0 V
Temperature -20 oC to 60 oC
Charging:
Recommended Charge Voltage 3.6 V
Recommended Charge Current <= 0.9 A (C/2)
Max Continuous Current, >10 oC 2.7 A (1.5C)
Terminate Charge @ 3.6 V < 36 mA
Float Voltage 3.5 V
Temperature 0 oC to 60 oC
Storage:
Temperature -30 oC to 70 oC
Mechanical:
Diameter O18.5 +/- 0.1 mm
Length 64.95 +/- 0.2 mm
Mass 43.4 g +/- 1.0 g
Certifications:
Transportation shipped @ <= 30% SOC UN 3480, UN 38.3
Safety UL 1973, IEC 62620
*pending early 2024
See A123/LithiumWerks 1800 Single Cells Above for all other available data.
Want a custom pack? See our custom pack listings, or email us at Sales@RadicalRC.com, and we can special make any kind of pack you require!
Note: Photo shows sample Rx pack with double lead option.
For checking pack voltage between flights, our best advice currently is: Leave model on after flight, plug loaded volt meter directly into pack balance plug (charge port ok but not preferred) hold load engaged, switch model off. Allow pack to drain into meter for 5 seconds, take your reading. See my blog post Checking A123 RX Packs For Recharge Point for help in this area.
We packed as much brute power and intelligence into this tiny layout as we possibly could and came up with a 15 amp* controller with ability to sustain an 8 amp BEC! Talon 15 measures just 1.1" long and is under 0.6" wide! At nearly the size of a quarter, this ESC supports an outlandish 8 amp** peak BEC with output voltage of 5.5 VDC. Applications range from foamies to micro and sub-micro helis running up to 4S and pulling 15 amps. As with any Castle ESC, the Talon 15 offers Castle's industry-leading functions, not to mention easy programming using the Castle Link USB adapter (coupon for free Castle Link included), or the Castle Field Link Portable Programmer (sold separately).
Notes from Dave: This is a world beater ESC. Now we can run high voltages in our smaller models with a small tight ESC from a quality manufacturer. I'm very excited to put one of these in my 5S, 16 ounce Stick 400. Sweet!
Input Voltage: 2-4 Lipo Max Continuous Amperage: 15* BEC Voltage: 5.5v BEC Amperage: 3 Continuous, 8 Surge** Switching Rate 7,000 Hz Resistance 0.0065 Ohms Brake yes, programmable Reversible yes - change any two wires Size .058 x 1.1 x 0.32 in. Weight (w/wires) 0.25 oz. (7.2g) Universal connector
*RC HOBBY APPLICATION RATING: 15 amps for the duration of a single 4,000 mAh battery pack with the ESC in contact with a 5 mph airflow of 25C (77F) or cooler air. Controller temperature must never exceed 100C (212F). Exceeding current or temperature ratings may damage components and may shorten the life of the ESC. Always verify system current draw at full-throttle. Decrease load or increase airflow to decrease the ESC's operating temperature.
**Peak indicates amperage sustainable for most servos' current draw transients. Always confirm servo current draw before the first flight of the model.
Fast, but not too fast. Maneuverable, but not tricky. A snap to build and surprisingly rugged compared to most. The original Sunday Fighters were the brainchild of Ken Willard back in the early 1970's. His were small, .049 powered 3-channel models and proved quite popular. Now, we've taken this idea, enlarged, and re-engineered them to make them as much fun to build as they are to fly.
You should see them take evasive maneuvers in Dog Fighting. Evade with snap rolls into spins, Immelmann turns and a loop. Our radio-controlled Sunday Fighter airplane kits just might be the most fun you've had in a long time.
Because of the interlocking design and high quality laser cutting of the parts, the Sunday Fighter is a quick build. Not only does it build quick, but it also builds straight and true as all of the parts are designed to align properly with a minimum of fuss and alignment tools.
The wings are removable for storage/transport and for giving access to the extra large cabin area. From there you have easy access to install most any brand of radio and control linkages. However, the fully assembled model can fit in the trunk of most mid-sized cars.
Up-front, we've designed in a hatch that covers the battery/tank compartment. This area will easily handle 3s packs and 6 ounce tanks.
Whether you choose to power your Sunday with electric or glow power, we've got you covered. Glow engines can be mounted side, inverted or even upright with a little modification. Electric motors can be mounted using the included Motor Box which will help space your motor to the proper distance.
Go true "old-school" with 3 channel control, or opt for functional ailerons (4 channel).
There are two Sunday Fighters - the German version you see here, and the British version you can see at this link.
Specifications:
Wingspan: 46.5 inches
Wing Area: 725 sq inches
Length (airframe only): 34 inches
Weight: 3.5 - 4 pounds
Radio: 3-4 channel system
Power:
o Glow (.20-.30 engine, 6 ounce tank, fuel tubing)
o Electric (equivalent brushless motor, 3s LiPo)
Premium USA Hardware
Included in each Old School Model Works kit is a premium hardware package. We only source our hardware from brand-name, USA manufacturers to guarantee the best quality.
Dual Ailerons Mounted under the lower wing, these two pre-cut aileron hatches make it easy to install the aileron servos.
WEB-LOCK Construction There's nothing else like it. Build our wings, straight and true - with a minimum amount of fuss.
Bolt on main gear Bending your own landing gear is hard. So that's why we include pre-bent main landing gear wire ready for you to assemble.
Front hatch Held in with magnets, this extra hatch gives you easy access to batteries or fuel.
Included Motor Box For electric power, we include the pieces to build this electric motor mounting box.
Design your color scheme Download this sheet to design your Heinschmitt's color scheme.
Additional items needed to complete our Sunday Fighter kit:
o Propeller
o Engine/Motor mount & mounting hardware
o 2-5 servos depending on setup: 2 mini for elevator/rudder, 2 Sub-Micro for ailerons/throttle
o "Y" servo harness (for ailerons)
o Pushrods (two 5" for ailerons, two 20" for elevator & rudder, one 9" for throttle if glow powered)
o Clevises for the pushrods (8 if electric, 10 if glow).
o 2 - 3.5" diameter wheels. We recommend Du-Bro's #350V Vintage wheels for the proper look.
o 1 - tailwheel assembly
o Covering
Flickr Album
Due to high demand, allow at least 2 weeks or more for shipment.
5S K6 Series 3000. 65C (195 amps) Constant; 130C (390 amps) Burst. High discharge cells. Industry Standard XH balance plug. Weight: 435 grams. Measures: 139mm L x 45mm W x 34mm H. SKU Number: KYP5S3000HD65C
Side By Side, Flat Pack, 9.6V N-700 AAC (Typical AA size).
Direct fit replacement for your Futaba NT-8JY pack, Tower system 3000 TX packs, Hitec TX Packs and any other TX that takes a flat 8 style pack. Many stock factory packs are 500-600mAh. More capacity here.
Weight 180g/6.37oz.
Cell Color is Green or Yellow as per factory production.
Maintenance charge and maximum form charge rate for this pack is not to exceed 70mAh. See chart at top of category page for charging recommendations.
Form charge on factory wall charger only, not to exceed 70mAh. Attempting to form charge (initial charge) on peak detection charger or by any other method not specifically stated here is not recommended and voids warranty.
Capable of big sky flying or ball park low-n-slow! You can trust the Quick Wing in any flight condition. Any 12mm brushless motor system capable of turning a 3-4" prop at 10 watts or more will work well. She is sure to please the most speed hungry wing fanatic while still retaining very good slow speed handling characteristics with the 50XC brushed motor and this is my favorite setup here. Quick "3D Jigsaw Puzzle" assembly in only 1-2 hours. World class laser cutting and design make this one of the quickest and most enjoyable balsa models you will ever build. You'll be amazed at the wide speed envelope the Quick Wing 12mm has. It easily goes from high speed to ball park flying with no bad habits. I'm totally comfortable recommending this kit as a good 2nd or 3rd model as long as you keep the power system modest. Advanced pilots can take the power as far as they like. The model is clearly and advanced flying machine with such power.
Specifications:
Wing Span 14.6"
Wing Area 100 sq. in.
Weight 3-3.5oz.
Length 9"
CG: 1-1.125" (25.4-28.5mm) From LE
Required: Nelson So-Lite Covering;3ch+ Radio with elevon mixing, small RX like Berg;2 Micro servos (sub 0.2oz. under 6 gram); GWS50XC motor or 12mm inrunner brushless; Prop: 3x3 suggested; 250-400mah+/- 2S-3S LiPB; ESC.
If you select a receiver (RX), tell us which channel you need at checkout.
GWS 50XC motor on 3-3 prop is for 2S battery only.
Hitec raised the bar by offering the ever popular HS-65 in a new digital version! The HS-5065MG High Performance Micro Servo features Hitec's digital, programmable circuit for incredible resolution, centering and holding torque. Featuring metal gears, a top-ball bearing, and at 31 oz./in. of torque with a quick transit time of 0.11 sec at 6 volts, it is no doubt THE choice for high performance micro helicopters, electric park flyers, and 1/18 scale cars.
Torque (4.8/6v)
Weight
Speed (4.8/6v)
Bearings
Size SAE
Size Metric
Type
25 / 31 oz.in
11.91g/0.42oz.
0.20/0.17S
1BB
0.92 x 0.45 x 0.94
23.37 x 23.88 x 23.88
Digital
Choose Quantity Option below. Want 1, 2, or 3 servos? Select first option, then enter quantity 1, 2, or 3. Want a bulk discount? Select 4-Pack, then enter how many 4-Packs you want.
 "RRC K6 Series 5100 11.1V 3S 65C")
 "Sodium Na-Ion Battery #18650 3.1V 1300mAh Single Cell")
 "Hitec HS-65HB Mighty Karbonite Feather Standard Servo")
 "SIG Kobra")
 "RRC K6 Series 4500 18.5V 5S 65C")
 "RRC K6 Series 1300 11.1V 3S 65C")
 "GF Nylon Spinner 57mm")
 "GWS Mini LF Ball Bearing Servo JR")
 "Himax HC3516 Outrunner 1350 KV")
 "RRC K6 Series 2600 14.8V 4S 65C")
 "MTO2836-1500")
 "A123/LithiumWerks Life Nano Phosphate 2S 1800mah #18650 Receiver Pack")
 "Castle Creations Talon 15")
 "Old School Model Works German Sunday Fighter Heinschmitt Kit")
 "RRC K6 Series 3000 18.5V 5S 65C")
 "Robart Small Pressure Tank")
 "RRC K6 Series 5100 7.4V 2S 65C")
 "Radical RC Quick Wing 12mm")
 "Hitec HS-5065MG Micro Digital Servo")
