SA Sport SAR6410 4CH UM Receiver (DSM2/X)

Additional Details

The SA Sport SAR6410/S puts everything a small park flyer needs on one board — receiver, ESC, and servos together in a package the size of a postage stamp. Bind it to your Spektrum or JR DSM2/DSMX transmitter, connect motor and battery, and you’re ready to fly. It’s the receiver used in Stevens Aeromodel ultra-micro kit builds including the Ace (100) and Pacemaker (100), and a functional replacement for the discontinued PKZ3351, PKZ3352, and SPMAR6410.

Key Features

• DSM2/DSMX Compatible — Works with all Spektrum and JR transmitters capable of DSM2 or DSMX modulation.
• Built-in 3A Brushed ESC — Integrated speed controller with throttle lock safety function. Independent signal output also available for adapting an external ESC (soldering required).
• On-Board Linear Servos — Two linear servos mapped to Rudder and Elevator outputs.
• No Soldering Required — Boards come pre-wired with a 3-inch Molex Picoblade 1.25mm battery lead and a 2-pin 1.27mm motor plug.
• Dual Aileron / Flaperon Capable — When paired with a compatible computer radio, outputs dual aileron control to Aileron (standard direction) and AUX1 (reversed direction) ports.
• Mounting Bracket Included — Complete SAR6410 mounting bracket and hardware included with every receiver.

Specifications

Specification	Value
Channels	4
Modulation	DSM2 / DSMX
Frequency	2.4 GHz
Operating Voltage	3.5 – 5.0V
Dimensions	24.5 × 24 × 7.4 mm (not including power leads)
Weight	3.5 g
Built-in ESC	3A Brushed, throttle lock
On-board Servos	2 × Linear (Rudder / Elevator)
Battery Connector	Molex Picoblade 1.25mm (male)
Motor Connector	2-pin 1.27mm pitch (female)
Servo Connector	JST-SH 1mm (male)

Connector Details

Connector	Detail
Battery Input	Molex Picoblade 1.25mm pitch (protected male), 3-inch pre-wired lead
Motor Output	Two-pin round 1.27mm pitch (female)
Servo Ports	JST-SH 1mm (protected male)
Aileron 1	Negative | Positive | Signal
Aileron 2 (reversed)	Signal | Positive | Negative — view board with motor connector up, aileron ports lower left, read right to left

Mounting Instructions

Bench-test your receiver before mounting it in your model. This is a delicate board — handle and install with care. A SAR6410 mounting bracket (Item No. SAR6410-MNT) and hardware are included with every SAR6410/S. Replacement brackets are available separately at stevensaero.com.

Important: CA glue and most store-bought silicones are corrosive and will damage the exposed electronics. Never use adhesive glue or silicone caulk to mount this board. Use only double-sided foam servo tape. Keep glue and debris away from the servo drive train.

The servo drive train will bind if control surfaces are not completely free-moving. Avoid CA hinges, creased foam control surfaces, and full-length double-taped hinges. Hinges that work well: single tape hinges (top or bottom surface only, not both), sewn hinges, and covering film hinges. A gap of .004″ (the thickness of a sheet of copy paper) between the servo body and the spur gear must be maintained.

Binding Instructions

Caution: Remove the propeller before binding or making any ESC and servo adjustments.

1. Turn your transmitter off.
2. Power on the model. After approximately 10 seconds with no signal, the receiver enters binding mode — the LED changes from a slow flash to a rapid blink.
3. Power on your transmitter and perform the bind function per your transmitter’s instructions.
4. Successful bind: rapid blink → slow flash → solid LED (signal locked).

To avoid accidental rebinding, always power the transmitter on before the model. If the receiver enters bind mode unexpectedly, power down the model and follow the correct sequence.

Throttle Lock Function

The onboard ESC is locked when power is first connected. To unlock:

1. Move the throttle stick to its lowest position.
2. The red LED will flash once — ESC is now unlocked.

If the throttle won’t unlock, the most common causes are a reversed throttle channel or an endpoint set too high. See your transmitter manual for guidance on reversing the throttle channel and adjusting the low throttle endpoint.

Spektrum DX6i Setup

To emulate PKZ3351/PKZ3352/PKZU1151/PKZU1152 receiver mapping in Stevens Aeromodel aircraft.

Swapping RX port assignments

1. From the Function List, select System Setup. Confirm RF will be disabled — YES.
2. Scroll to Channel Assign and select.
3. Scroll to ELEV and set to Rudder.
4. Scroll to RUDD and set to Elevator.
5. Exit to main menu.

For 3-channel models only — mix rudder output to aileron

1. Enter Function List → Mixing.
2. Scroll to AIL > RUD.
3. Set both Right and Left to 100%.
4. Set Switch from Inhibit to On.
5. Exit to main menu.

Dual Aileron & Flaperon Function

When paired with a capable computer radio, the SAR6410 outputs dual aileron control to the Aileron port (standard direction) and the AUX1 port (reversed direction). These instructions apply to the SAR6410 with Stevens Aeromodel ultra-micro linear servos. Support is not guaranteed with third-party servos.

Follow these steps in order, exactly:

1. In your transmitter, establish a new model in memory. Specify dual ailerons and/or flaperons under the model wing type settings. Follow your transmitter manufacturer’s instructions.
2. With the transmitter properly programmed for dual ailerons, bind the receiver to the transmitter.

Common issue: “AUX1 servo doesn’t respond to aileron input.” In nearly every case this is caused by not programming dual aileron control in the transmitter before binding. Return to step 1, confirm the transmitter setup, then rebind.

Package Contents

• 1 × SA Sport SAR6410/S 4-Channel UM DSM2/DSMX Receiver Board
• 1 × SAR6410 Complete Mounting Bracket (SAR6410-MNT) with hardware
• Pre-installed: 3-inch Molex Picoblade 1.25mm battery lead and 2-pin 1.27mm motor plug

This product has been independently developed and tested to function with Spektrum’s DSMX and DSM2 2.4GHz modulation protocols. Spektrum, DSMX, and DSM2 are registered trademarks of Horizon Hobby, Inc. This item is similar in function to the discontinued PKZ3351, PKZ3352, PKZU1151, PKZU1152, SPMAR6400, and SPMAR6410. While generally comparable in size and scope, it will not be a direct-fit for mounting solutions made exclusively for the original ParkZone equipment and may not match the programmed servo mapping for all applications. For Stevens Aeromodel kit builds, we recommend a modern DSM2/DSMX computer radio with channel-swapping capability. Simple game-controller style transmitters and older non-computer radios require more difficult manual setup. This product is best suited for the kit and scratch builder — no claim of suitability for RTF aircraft is made or implied.

Warranty: This product is tested for proper function before shipment and is guaranteed to work upon arrival. Contact us within 30 days of purchase to report a non-functioning unit for replacement. Test the unit before installing. Units showing evidence of use or contaminated by adhesive glue or silicone are not eligible for replacement.