Mini protos esc setup




















For most people, I suggest use the same pinion, but just try a 5S battery pack first because that already gives a very aggressive, sporty performance. Running on 6S is for the pros and really gives an adrenalin rush. My conclusion is that as long as one uses high quality, newer digital servos and servos have been improving at a remarkable pace with zero dead band and zero gear freeplay, then you will enjoy excellent handling. The secret with any eCCPM controlled RC helicopter is simple: use modern high grade servos and never use low grade servos.

MSH Protos mechanics right side. With many eCCPM helicopters, especially electric models, such as the Protos, to save weight, the swashplate is connected directly to the three eCCPM servos by using a direct pushrod link between the servo and the swashplate. In this case, the advantage is it saves weight and reduces complexity. But the drawback is all vibratory and steady loads from the main rotor blades can transfer directly to the servo gear train.

In a crash, the shock of the blades could cause plain nylon servo gears to break teeth. Larger models usually use a push-pull lever in between the servo and the swashplate. The advantage of using a push-pull lever is that it reduces direct feedback loading from the blades to the servos, because the loads must go through the bellcrank. The disadvantage is extra complexity and weight, but with medium to large size helicopters it is desirable to have a push-pull linkage. Small electric helicopters typically skip push-pull to save weight and complexity.

With either direct drive or with a bellcrank, it is still necessary to use highest quality servos to ensure zero free play in the control system: only then can we be assured that the helicopter will obey every tiny input we tell the model to do. When the Idle-Up switch is turned on, and the throttle collective stick is at the center, the servo arms for all three eCCPM control servos should sit horizontal, and the main rotor blade pitch angle should be at zero degrees.

The Bell-Hiller mixing arm for the Protos is mounted on the blade pitch control arm. Since the pivoting point of the Bell-Hiller mixing arm is in line with the main rotor shaft, and directly above the flybar, it has a zero degree Delta-3 angle. Zero Delta-3 provides no pitch-flap coupling, and some designers and pilots prefer keeping the rotor geometry at a pure zero coupling angle to give uncoupled kinematics.

And yet some other designers prefer tweaking the layout to fine tune handling. I suggest leaving the helicopter as is and do not modify anything because the designers and the engineers who manufacture these products should have tested their machine to optimize the model already.

Please see the photo to see exactly what zero Delta-3 means. Here we see how the Bell-Hiller mixing arm is mounted to the main rotor blade pitch control arm and the Bell-Hiller mixing arm is connected to the flybar seesaw. This shows the main rotor and the eCCPM swashplate. When all three servos move in unison the swashplate rises or lowers to change collective pitch. The pictures also show where to mount the steel balls on the Bell-Hiller mixing arm.

On the Protos, the Bell-Hiller mixing arms has two hole choices for mounting the steel ball for the pushrod connecting to the swashplate. The following setup procedures are for intermediate level pilots who are using the Idle- Up feature. Once the transmitter throttle and pitch curve values have been programmed, then turn on Idle- Up, and move the throttle-collective control stick to the center.

The servo arms should be exactly horizontal. If the servo arms are not horizontal then remove the servo arm screws and rotate the servo arm by one or two spline tooth increments until the arms become close to horizontal. Then, use the subtrim feature in your transmitter to make sure each one of the three servo arms is horizontal.

Please check the direction of the cyclic controls to ensure left cyclic command tilts the swashplate to the left and a forward cyclic command on the transmitter tilts the swashplate forward. Raising the throttle-collective stick should raise the swashplate and increases blade pitch angle. The yellow imaginary line shows that the pivoting point of the Bell-Hiller mixing arm is in the middle of the rotor hub and this means there is zero Delta-3 angle.

Some optional metal parts for the Protos. They include washout arms, Bell-Hiller mixing arms, metal pulleys for the tail rotor drive belt, metal mount for the tail rotor control servo, metal seesaw and motor mount.

Next, bring the throttle-collective stick back to center. Next adjust the three pushrods from the three servo arms linked to the swashplate until the swashplate is perfectly level. There is an aftermarket gadget designed and produced by Mike Fortune that uses a bubble level to check if the swashplate is level. At this time, the swashplate should be approximately in the middle of the total vertical travel range, if not, then adjust the pushrod lengths for all three pushrods.

In this picture the pushrod from the swashplate is connected to the inner hole on the Bell-Hiller mixing arm. This gives more Bell action and less Hiller action. The pushrod from the swashplate is connected to the outer hole on the Bell-Hiller mixing arm, this means for a given amount of swashplate vertical movement, there will be less blade pitch angle change.

This gives less Bell action and more Hiller action. If you do not get the necessary travel range, then go to the CCPM swashplate menu and adjust the pitch travel value. Normally, the factory preset value for Pitch in the Swashplate Menu is I recommend using a value between 60 and If the value is lower than 60, then it means the servo arm is not rotating very much, and you are not taking full advantage of the resolution of the servo rotational movement. Bottom side of Protos tail rotor showing the tail pitch control bellcrank.

Note the simple and functional tail rotor design along with precision pitch change mechanism on the Protos. That is not desirable because two roll servos moving opposite each other to give roll cyclic control can start to introduce unwanted coupling between cyclic and collective motion. In JR transmitters, they are labeled as Aileron and Elevator.

This is the deluxe carbon frame version of the MSH Protos. All Protos come with a painted, light weight fiberglass canopy. Travel Adjustment or End-point adjustment EPA is used to set how much movement the servo arm can swing in each direction.

The End-Point Adjustment is used to control the servo total travel range. This shows the transmitter swashplate menu for the degree eCCPM. The use of mixed materials including carbon fiber, aluminum, composite plastics to optimize every aspect of the design. The MSH Evoluzione takes design aesthetics to new levels.

The Evoluzione boom maximizes tail performance by keeping a very low profile in sideways flight. The Evoluzione canopy is streamlined and connects flush with the boom to enhance the aerodynamics of the model.

Twin Belt Transmission. The Protos implements a robust twin belt transmission, with auto tail belt tensioner. This translates into thousands of maintenance-free flights and whisper quiet transmission. With the lack of gear mesh, the Protos can handle huge power, while delivering it with no transmission noise.

A robust one way bearing assembly is located in the main pulley assembly. The low drag setup allows great autorotation performance in a small package.

A broken set of landing gear can ruin a day at the field. MSH is famous for their mastery of composite plastics. Gorilla gear takes unbelievable abuse landing after landing.

Protecting the airframe and blades. Flying is all about the fun. And gorilla gear gives you the confidence to get low. Learn autos. And master the skid bump. MSH is a big fan of "set it and forget it". The auto belt tensioner pushes the Protos tail performance to all new levels, while allowing the pilot to just forget about checking and setting the tension flight after flight, despite changing environmental conditions. It also allows the tension to be reduce significantly improving auto-rotation performance.

The canopy is installed and removed in a single motion.



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