Standard shape is Flat (4 cells side by side), square is shown in photo. Stick packs may also be constructed, however they are not repairable if a cell is damaged.

Use only Lithium chargers with an A123/LithiumWerks mode limiting charge voltage to 3.6V per cell. An Astro Blinky for A123/LithiumWerks is highly recommended as a balancing aid for these cells.

Specification's: Weight of built 4S 2500 RX pack is 11.72oz/(332g). See A123/LithiumWerks 2500 Single Cells Above for all other available data.

Want a custom pack? See our custom pack listings, or email us at Sales@RadicalRC.com, 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.

State-of-the-art CAD drawn plans and laser-cut parts assure you of precise parts fit and perfect alignment. The lite-ply fuselage and simple wing design get the Four-Star 60 out to the flying field in short order.

With a wing loading like a trainer, the Four-Star 60 is easy to fly, yet will perform all the free-style aerobatics your thumbs can keep up with. Day in and day out, the Four-Star 60 will be the sport model you'll want to take to the flying field every time.

Kit Features: Lite-Ply Fuselage Construction, Pre-Cut Sheet Balsa Tail Surfaces, Durable Aluminum Main Landing Gear, Formed Tailwheel Wire, Molded Clear Plastic Canopy, Full Size Plans, Fast-Building Wing with Spruce Spars, Photo-Illustrated Instruction Book, Engine Mounts, Sig Easy Hinges, Pushrods, Complete Hardware Pack & Large Decal Sheet.

Wingspan: 71 in 1803 mm
Wing Area: 920 sq in 60.3 sq dm
Flying Weight: 7-8lb 3175-3630g
Length: 57 in 1448mm
Radio Required: 4 Channel with 5 Servos
Recommended Engines: .60-.75 cubic in (10.0 - 12.3 cubic cm) 2-Stroke, .65-.90 cubic in (10.7 - 14.8 cubic cm) 4-Stroke

Special notes about electric from Dave: This model would make an excellent electric conversion. I've seen many of the 4 star series done and they fly well. Plenty of wing area and a light weight design. Below are my suggestions for a range of practical power systems.

Setup and Performance Chart
60

Motor	# Cells	Prop	Amps	Watts In	RPM	Thrust oz.	Pitch Speed MPH	Climb FPM	Est. Top Speed
Himax 3528-800	4	12x6	46.1	1399	9,200	57	52	1399	54
Himax 5018-530	5	14-7	47.4	889	7,790	60	52	1989	58
Himax 5018-530	6	13x8	55.6	1251	9,180	96	70	2690	69
Himax 5018-530	4	16x10	58.1	872	5,550	74	53	1940	58
Himax 5030-390	8	14x7	52.1	1563	9,550	131	63	3305	71
Himax 5018-530	6	13x8	55.6	1251	9,180	96	70	2690	69
Himax 6320-250	10	16x8	44.5	1669	7,920	149	3693	71

Estimates based on manufacturers provided constants using E-Calc. High Quality 2100-3000mah used as trial cell in calculations. Presumed model weight of 76oz. @3 cells (added oz for higher cell counts). Actual performance may vary depending on components used, accuracy of data as provided by manufacturer, quality of battery, ESC, and many other factors.

OUT OF STOCK, PENDING MANUFACTURER 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.

SEE OUR AA NiMH HERE:  https://www.radicalrc.com/item/FDKSanyo-1650mah-AA-NiMH-9.6V-8-Cell-Airtronics-Stylus-Futaba-FG-TX-Pack-104154   

HC50 Outrunners generally used from 800-1500 Watts. High torque to turn large props direct drive.
Replaces .40-.60 size engines. Mounting hardware and connectors included. Himax Brushless motors are manufactured to high standards for the discerning modler. Designed for light-weight, high efficiency, high torque and durability Himax Outrunner motors are sure to make todays radio controlled models perform.

All HC50 series outrunner motors include: Prop adapter, female wire connectors, motor mounting kit w/screws and two hex keys. Also included is base for standoff motor mount kit ACC3650 sold seperately.

Specifications:

Weight	Size D x L	Amps	Shaft	Max Motor RPM	KV	Resistance	No Load Current
275g/9.7oz.	48.8mm(1.96") x 53.2mm(2.09")	30-50, 65 15s	6.0mm (.2362")	12k	530	.033Rm	1.8A

Setup and Performance Chart

# Cells	Prop	Amps	Watts In	RPM	Thrust oz.	Pitch Speed MPH
3	16x10	36.7	413	4,590	76	43
3	18x12	52.7	593	3,990	95	45
4	14x10	40.1	603	6,290	91	58
4	15x10	47.6	714	5,980	105	56
4	16x12	60.8	912	5,440	119	61
5	12x12	42.5	793	8,020	89	90
5	13x10	46.2	866	7,840	111	73
5	14x7	44.2	829	7,930	119	51
5	15x10	64.6	1211	7,010	147	65
6	12x12	55.2	1242	9,020	118	103
6	14x7	57.5	1294	9,090	158	59
6	15x7	67.4	1517	8,600	177	69
7	12x8	53	1391	11,090	153	82
7	13x6.5	56.8	1491	10,890	170	65
8	11x10	59.5	1785	12,490	153	116

Estimates based on manufacturers provided constants using E-Calc. High Quality 3200mah 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.

5S K6 Series 1800mAh 65C Constant 1300C Burst. High discharge cellls. 275 grams, 42H x 34W x 100mm L.

My personal Slow Stick Canard is a twin tractor. I have a 1000mm boom length and the CG is set at 1-1.25" in ffront of the main wing leading edge. I have never built one with a stock boom length (800mm) but I would start with the CG in the range of 0-.5" in front of the leading edge. The shorter the boom the further the CG comes back, the longer the further forward you would place it. I don't know where Bob Masterson's CG is set but I would thing it is similar to my 1000mm boom setup.

Maiden Flight Video of Bob Masterson's converted Canard Slow Stick. This model is full house with 10" extended boom length.

Slow Stick Canard from Bob Masterson on Vimeo.

Specifications/Constants:

Weight	OD x Lengths	Max Efficient	Shaft	Max Motor RPM	KV	Resistance	No Load Current
65g(2.3oz)	20mm (.79") x 42mm (1.68")	10-20A	2.0mm(.078")	60k	4200	.075Rm	.75A

Setup and Performance Chart

# Cells	Prop	Amps	Watts In	RPM	Thrust oz.	Pitch Speed MPH
2	4.1x4.1	15.8	119	24,330	12	94
2	4.7x4.2	21.9	164	21,670	16	86
2	5x3	20.9	157	22,100	18	63
3	4.2x2	20	225	37,490	23	73

Estimates based on manufacturers provided constants using E-Calc. High Quality 500mah 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.

Himax/Maxx Products Warranty Info.

Himax 3528 series motors are most generally used in 34-90 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
197g/6.9oz.	35.2mm(1.39") x 54.2mm(2.13")	15-48, 68 15s	5.0mm (.1969")	20k	1000	.020Rm	2.6A

Setup and Performance Chart

# Cells	Prop	Amps	Watts In	RPM	Thrust oz.	Pitch Speed MPH
2	10x10	19.5	145	5,960	22	55
2	11x10	26.4	182	5,590	28	62
2	12x10	29.4	219	5,210	34	48
2	14x10	39.2	292	4,470	42	41
3	10x10	33	368	7,990	41	74
3	12x8	42.5	471	7,100	59	52
3	12x10	46.6	520	6,680	57	62
3	13x6.5	44.3	494	6,900	63	41
3	13x8	48.4	540	6,500	65	48
3	13x10	52.8	589	6,080	63	56
3	14,700	51.5	575	6,210	68	40
3	14x10	58.5	653	5,530	68	51
3	15x10	63.7	737	6,850	86	44
4	11x10	54	804	8,580	70	80
4	12x8	56.6	842	8,280	82	61
4	13x6.5	58.9	876	8,010	74	48
5	10x10	57.5	1070	10,720	77	100
5	11x7	57.8	1075	10,680	95	69
6	10x6	55.1	1230	13,650	104	75

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.

2S K6 Series 2200. 65C (143 Amps) Constant, 100C (286 amps) Burst. High discharge cells.
Weight: 135 grams
Measures: 104 x 34 x 19mm

TEMPORARILY OUT OF STOCK 

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.

This listing is for one 2-Cell battery pack, single cells shown for example only.

SELECT YOUR OPTIONS BELOW TO CUSTOMIZE YOUR BATTERY PACK 

TEMPORARILY OUT OF STOCK 

Furukawa (formerly Panasonic) N-700 AAC  Typical AA Size, Diameter .57"/14.3mm x 1.98"/50.2mm High, .82 oz/23g. Button type AA, Use to build special packs or convert your dry T/RX to NiCad. Manufacturers listed internal resistance is 16Ω.

Panasonic N-700AAC Battery - 1.2 Volt 700mAh AA Ni-Cd ( NUN-1100AF, IT-900AA, IT-700AA ) Dimensions: Diameter 0.57"(14.3mm) x Height 1.93" (48.9mm) Weight: 0.82oz (23g) Termination: Button End

SEE OUR AA NiMH CELLS HERE: https://www.radicalrc.com/item/FDKSanyo-1650-AA-NiMH-Flat-End-Single-Cell-102681  

Beautiful, isn't she?

And like all great ladies, her graceful ways are evident the moment she takes to the skies.

The Minuette is designed to mimic the look and feel of those wonderful Edwardian flying machines that were flown by those magnificent men.

Building the wing is a snap, as all of the ribs are laser-cut as part of our WEB-LOCK construction for proper alignment with minimum fuss.

If you want to go truly "old school", it can be built for simple 3-channel control (rudder, elevator, and throttle). For even more control, the included ailerons can be made fully functional (4-channel control).

Although power can come from glow or electric powerplants, a simple 3s electric setup is really what the Minuette is designed around. We've created the fuselage with a huge top hatch so you have quick access to batteries and a radio, and it also hides the wing bolts.

In the air, the Minuette is a simple, easy-to-fly cruising aircraft. Takeoffs are in just a few feet, even from grass runways. Once airborne, relax and gently glide her through the air through a series of low-passes, gentle turns, and even horizontal figure eights. With a 3200mAh battery, you can easily achieve 10+ minute flights with plenty of battery left for some touch-and-go's before landing.

The Minuette can even handle a bit of light wind without too much problem, and she is at her best taking off and landing into those gentle winds, if possible.

Please note that the Minuette is not designed (or stressed) for aerobatics. Also, the removable flying wires in the Accessory kit are decorative and not needed to fly - just to look great.

Specifications:

• Wingspan: 67.5 inches
• Wing Area: 630 sq. inches
• Length (airframe only): 38 inches
• Weight: 3.5-4 pounds RTF
• Radio: 3 or 4 channel (Sub-Micro servos, similar to HS-5065MG)

Power:

• Glow (.15-.25 glow)
• Electric (250+ watt, 40+ amp ESC, 3S 3200+mAh 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.

WEB-LOCK Construction

There's nothing else like it. Build our wings, straight and true - with a minimum amount of fuss.

Front hatch

This extra-large top hatch gives you plenty of room to access the battery. It also hides the wing-bolts and gives access to the radio compartment. It's rear lock makes it quick to remove and quick to lock the hatch place.

3 or 4 channels

To aileron, or not to aileron? Whatever your answer is, parts are included to build the wing either way.

Design your color scheme https://oldschoolmodels.com/images/minuette/osmw-minuette-color-scheme-blank.jpg

Additional items needed to complete the Minuette kit:

• Propeller
• Engine/Motor mount & mounting hardware
• Radio system with 3 or 4 servos (we used Sub-Micro servos in our prototypes)
• "Y" servo harness (for ailerons)
• Pushrods (we recommend pull-pull for elevator and rudder, 6" pushrods for the ailerons)
• Clevises for the pushrods
• Wheels: two 3.5" vintage look tires
• Covering (typically one 2-meter roll will work)
• Optional Accessory Kit for a more "scale-like" look

Minuette Accessory Kit:

Although this optional accessory kit is not necessary for the Minuette to fly, it does add a bit of "scale-realism". The flying wires and pylons are removable for easy transport of the wing and fuselage. It includes:

• Ready-to assemble 3D printed dummy motor (based on the Anzani "W" 3-cylinder). It is designed and printed by Innov8tive Designs, and meant to slip over your electric motor, mounting to the firewall
• Pre-bent upper and lower flying-wire pylons
• Anchors, removable flying wires, hooks, and shrink-tubing

Not shown:

• Laser-cut profile pilot
• 4-color, peel-and-stick sticker sheet (pilot and instrument panel only)
• Instruction sheet

Due to high demand, allow at least 2 weeks or more for shipment.

2S K6 Series 3800. 65C (247 Amps) Constant 130C (494 Amps) Burst. High discharge cells.
Weight: 213 grams
Dimension: 140 x 48 x 15mm

SOLD OUT 

"The R/C Trainer That's All Laser Cut", As you would expect, the new LT-25 inherits all the same gentle flying characteristics of the other legendary Sig Kadets. It has the same light wing loading, which allows it to fly slow enough to give the student pilot time to think and react. It has the same "hands off" stability on all axis. If the student pilot gets disorientated, simply let go of the sticks and the LT-25 will recover and return to level flight within seconds.

Specifications:

Wingspan 63 in 1600 mm
Wing Area 724 sq in / 46.71 sq dm
Weight 4 - 4 1/4 lb 1814 - 1928g
Wing Loading 12 - 13 oz/sq.ft. 3662 - 3967 g/sq-m
Radio Required 4-Channel
Recommended Engines .25 - .32 cubic in (4.1 - 5.2 cubic cm) 2-Stroke
.20 - .26 cubic in (3.3 - 4.3 cubic cm) 4-stroke

Special notes about electric from Dave: This model makes an excellent electric conversion and is perhaps the most popular one of all time. Super light weight, large as or even larger than most 40 size trainers. The only lighter weight 40 size trainer on the market is the Radical RC Intern 66.

Setup and Performance Chart

Motor	# Cells	Prop	Amps	Watts In	RPM	Thrust oz.	Pitch Speed MPH	Climb FPM	Est. Top Speed
Himax 3516-840	3	11x8	26.2	295	7,500	57	41	970	46
Himax 3516-1130	3	10x7	36.6	412	9,920	66	50	1294	51
Himax 3522-990	3	11x7	37	416	8,770	58	54	1405	51
Himax 3522-990	4	10x5	35.7	536	12,310	58	64	1683	54
Himax 3528-1000	3	12x6	44.5	501	8,690	49	64	1698	52
Himax 3528-800	5	10x5	31.4	589	12,900	61	71	1865	57
Himax 3528-1000	4	11x5.5	51.4	771	11,660	61	85	2453	60
Himax 5018-530	5	12x8	30.5	572	8,560	65	76	2050	59
Himax 5018-530	5	13x8	38.5	716	8,210	62	93	2614	62

Estimates based on manufacturers provided constants using E-Calc. High Quality 2100-3000mah used as trial cell in calculations. Presumed model weight of 76oz. @3 cells (added oz for higher cell counts). Actual performance may vary depending on components used, accuracy of data as provided by manufacturer, quality of battery, ESC, and many other factors.

TEMPROARILY OUT OF STOCK, MANUFACTURER BACK ORDER, NO ETA AT THIS TIME SORRY 

Maintenance charge and maximum form charge rate for this pack is not to exceed 100mah. See chart at top of category page for charging recommendations.

Form charge on factory wall charger only, not to exceed 100mah. 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.

2S K6 Series 1300. 65C (84.5 Amps) Constant, 130C (169 Amps) Burst. High discharge cells.
Weight: 89 grams
Measures: 93 x 34 x 26mm

TEMPORARILY OUT OF STOCK

These batteries are capable of 50 amp constant discharge, with a 10 second pulse rating of 120 amps. Cycle up to 1000 times before significant capacity loss occurs. The rugged assembly of the products will ensure that your pack will last for years, not months. Can be repeatably charged to 100% in 15 minutes. Charge only with Lithium chargers with an A123 (LIFE) mode limiting charge voltage to 3.6V per cell. 

Specifications, March 2021:

Nominal Ratings
Voltage 3.3 V
Capacity @ 25 °C 2.56 Ah +/- 0.1 Ah
Energy @ 25 °C 8.25 Wh
Specific Power @ 25 °C, 2 sec pulse > 4000 W/kg
Impedance (1KHz AC) Typical 6 mΩ
Cycle Life at 1C/1C, 100% DOD > 4000 cycles

Discharging
Max Continuous Discharge Current 50 A (20C rate)
Max Pulse Discharge Current (10s) 120 A (48C rate)
Minimum Voltage / HPPC Pulse 2 V / 1.6 V
Temperature -30 °C to 60 °C

Charging: Charge only with Lithium chargers with an A123 (LIFE) mode limiting charge voltage to 3.6V per cell: 

Temperature Range
(reduce charging current to 250mA when under 0 °C)
-20 °C to 60 °C

Storage
Storage Temperature -40 °C to 70 °C

Mechanical
Diameter Ø25.96 +/- 0.5 mm
Length 65.15 +/- 0.5 mm
Mass 76 g +/- 1.0 g

Tech Notes: 
10A Recommended float charge and storage voltage: 3.8V Recommended cut-off current for CV hold: 0.05A Maximum continuous charge current: 10A Maximum allowable charge voltage: 4.2V MAX Fast charge time: 15 minutes Cell discharging parameters: Recommended discharge cut-off voltage: 2.0V Maximum continuous discharge current: 50A Cell temperature parameters (skin temperature) Maximum recommended cell temperature: (158F) Maximum allowable cell temperature: (185F)

Torque (4.8v)	Weight	Speed (4.8v)	Bearings	Size SAE	Size Metric	Type
40 oz.in /2.9kg.cm	21.7g/0.77oz.	0.11s	bb	1.38" x .665" x 1.06"	35 x 16.9 x 27mm	Analog

3x2 Double Stick, 7.2V FDK (formerly Sanyo) 6-AA 2500 NIMH cells. "Twicell" (formerly Eneloop) low self discharge type which comes partially charged and is the same product as prior. Made to fit Hitec's new Aurora 9 and the Airtronics SD-10G. Excellent way to go when replacing a weak factory pack. 7.2 volts and 6 cells just more capacity. Comes without plug, choose below or reuse your old plug.

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 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")	10-34, 48 15s	5.0mm (.1969")	20k	1130	.030Rm	1.8A

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	9x7	28.9	325	10,510	46	68
3	9x9	34.2	385	10,100	45	84
3	10x5	30.3	341	10,400	53	47
3	10x7	37.9	426	9,820	58	63
3	11x5.5	41	461	9,590	66	48
3	11x7	47.2	531	9,110	70	59
4	8x6	29.2	438	14,480	54	80
4	9x4.5	32.9	494	14,160	65	58
4	Xoar 10x4	40	602	13,550	76	49
5	8x4	30.6	574	18,330	69	66
5	8x6	41.1	771	17,360	79	95
6	7x6	37.5	844	21,610	75	119

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.