Radiomaster AG01 Nano gimbals review

The Radiomaster Pocket is a wonderfully versatile little transmitter - I use it for anything from cheap foamies to moulded F3F models. If it has a weakness, then it's the rather ordinary gimbals - sure, they're fine for foamies, but they lack the precision feel of the AG01 CNC gimbals which I have come to love on the TX16S.

In answer to this, Radiomaster offer the AG01 Nano, a CNC gimbal which is specifically designed for the Pocket. (RM also produce the larger AG01 Mini for the Zorro and TX12.)

AG01 Nano gimbal

As I'm now using the Pocket to fly a moulded F3F ship, I decided to order a pair. Here is my review including instructions on how to replace the old units.

First impressions

First impressions are positive - the AG01 Nano’s came beautifully packaged. Inside one big box were two smaller boxes, each containing a gimbal, an alternative set of springs, an Allen key, a set screw (for disengaging the throttle spring), and an instruction leaflet. Both gimbals were self-centring as delivered.

The package (accessories not shown)

Construction and feel

The centrepiece of these gimbals is the CNC metal construction of the main frame and yolks. Like the original units, each axis is supported by twin ball bearings.

Main components (apart from centring rocker) are metal

Stick travel is silky smooth. The centring is very precise, as confirmed by the hardware monitor in EdgeTX. That said, the feel at the centre position is similar to the originals, a consequence of keeping the same plastic rockers as the original - reasonable given their tiny size and intricate shape.

The end stops generate a subdued 'clack' - just enough to say 'CNC'. This is the most obvious tactile difference from the regular units.

Removing the old gimbals

Installing the AG01 Nano's is straightforward. The first task is to open the transmitter, accomplished by peeling off the rubber cheeks and undoing four Allen-head screws. 

A ribbon cable spans the two halves and it's a good idea to release one of the connectors. Loosen the connector first (by rocking end to end), then pull it away gently.

Next, undo the four securing screws and unplug the gimbal cables. Finally, lift out the old gimbals and put them aside.

Case split open ready to remove the old gimbals

Preparing the new gimbals

With the old gimbals removed, it's time to prepare the new units. The first job is to configure the throttle axis. Start by disengaging the centring spring using the supplied set screw. Next, tighten the friction strap to taste. 

The next job is to adjust the spring tension on the remaining axes. In order to achieve a well defined centre I set the tension to the maximum by screwing the adjusters as far as it would go. For those who prefer even higher tension, the supplied set of tighter springs can be fitted.

[Optional] using damping oil

If you've ever bought a set of full size AG01's, then it's possible you have a spare tub of damping oil lying around. If so, then apply a tiny amount to the Nano's, between the friction wheel and the metal strap. The result will be a beautifully damped throttle action. Only a tiny amount of oil is needed - any more will just gum up everything, and it's a pain to remove.

Fitting and calibration

It's now time to fit the new gimbals in place. And this is where I came across the only real issue: the mounting screws were a fraction too wide for the holes in the faceplates and were difficult to turn. If left uncorrected, it could lead to stripped threads when screwing into the front moulding. I worked the screws in and out of the faceplate in order to free them up and there were no further issues.

Once the case is screwed back together any further adjustments to stick tension can be made via holes under the rubber grips (it's not necessary to take the shell apart).

With everything adjusted and assembled, the final task is to go to the System>Hardware menu and calibrate the new gimbals. 

EdgeTX System>hardware menu

Stick tops

The sticks are identical to those on the original gimbals. And, like the originals, the tops are very sharp. I ran a file over the pointy bits for a more comfortable feel.

AG01 Nano gimbals ready to go!

Conclusions

Overall, I'm very happy with the AG01 Nano's. While the overall feel is similar to the regular sticks, they are more rigid, centre precisely and provide that little extra confidence when flying high performance models. They also add a touch of class to this clever little transmitter. 

If you get them, then do spend a little time to adjust them to your taste, and you will be rewarded!

Specifications

• Item: AG01 NANO CNC Hall Effect Gimbal
• Sensor type: Non-contact hall effect
• Working voltage: DC 3.3V
• Linearity: Real-time (No latency)
• Adjustable vertical travel range: 38°- 54°
• Self-centering adjustment: Yes
• Mode adjustment: Yes
• Adjustable tension: Yes
• Bearing: Quad precision bearings
• Temperature range: -20°C-85°C
• Size: 42*37*43mm
• Weight: 32g(±0.3g)