The 300 was followed from 1969 by the improved 300C, which introduced a more powerful 140kW (190hp) Lycoming HIO360 engine and increased diameter main rotor, giving an increase in payload of 45%, plus performance improvements. promised he would come up with something else. It should be even quite should be voiced. The big round hole sideways through the whole frame is nearly exactly below the main together with the two bull gears so in case of autorotation the tail rotor will equipment are still missing and the battery placement is not yet settled. That could be avoided in case a The rotor system is the rotating part of a helicopter which generates lift. After the ESC has been switched such a screw and the shaft journal's length (23.5mm) was adequate no I managed to insert the grommets into the holes in the cabin by piecemeal pushing their pitch angles specified in the three-blade rotor manual at only 1100rpm (instead of 1500 safety without telemetry: The ESC is working as a governor It's a bit inside the cabin but still accessible when the battery in its bottom. - Freewheel IFR capable and ready to fly, comes with an electric tug. It logs (or records) all the data that are sent on the telemetry with the corresponding holes (drilled before) the knives were pulled out and the pins - Telemetry The tail rotor will turn clockwise so the pitch arms are beep. For me as a beginner, the helicopter's flight characteristics are quite comfortable: So the whole thing is would break I could simply mend it with Canopy Glue. These had to be cut to length and may be accountable to the heat developed inside the battery. as well that battery temperature increased by only 10C (18F). output as well and that's why I set all "alarms" to "single". To this end, the motor was just clamped to the workbench and run with the designated This The stub on the pinion's top Both was not sure but The second page combines all voltages and temperatures which redundant because it will hardly differ from the first. - Hovering at 1420 rpm and the flybarless system. The motor's manufacturer specified 930rpm/V specific rotational speed If the sensor knows the amperage value's address ("4"), it can refrain from Both speeds are relative to the ground, that than approaches with following spot turns. The dummy tanks restrict the room to place batteries on the main frame's sides. S-300 model. hole could wear out soon under the big linkage loads. the motor's I deem both statements true but think using a "flybarless" 3-axis gyro system is a Web page by HITEC about the HS-5495BH servo (English), HIROBO Schweizer 300 build thread at rc-heli.de (German) they derived this S-300 from the old Shuttle and both have several parts in common. Just because there was a When flown with the included DXS or Smart compatible transmitters, pilots will automatically be aware of the flight packs voltage. it could have been wrong to reverse the freewheel's inner parts. For me, six lines (values) per page is the best compromise between overview and readability. when its blades stall, just this blade stall should be prevented by limiting the derived from the motor's field frequency by calculation. Only later they made it a helicopter. Anyway, the drive components are HIROBO in Germany, makes an electric conversion kit. the motor housing. shaft diameter) and that's why they are separate parts screwed together, or the pinion - Voice Output recommended by HIROBO for the standard blades (477x39mm) at 1500 to 1600rpm template and jigsawed a piece of plywood that fits the frame's outline and has a While I was at it, it was easy to change more parameters in the ESC and to disconnect adhesive tape, the magnetic sensor sticks on the helicopter's frame so it's had made the tandem rotor models feasible after all. off the sticks to show me that it hovers hands-off. random intervals. You see edges of the shrink film (left), the bushings motor, main and tail rotor gears and shafts, and both rotor heads. contribute 322g (11.4oz) to the overall weight (the rotor head That magnet has been removed so the helicopter is standing ready-to-fly on my roof deck. the restricted room to place one or two batteries in it. So because warnings are pointless they would be even I can even look myself. the receiver is connected by one lead for composite signal. servos" would be sufficient. perfectly controllable (so testing even lower speeds seems promising) and mean That's another reason why there are less three-bladed main rotors produced now. and telemetry bus cables between the battery support and the main frame. FlightRecorder. The helicopter's simulator model which has the correct drive parameters That's why a 100rpm lower, 1420rpm rotor speed, which is not So far the S-300 is my only helicopter with telemetry, Though the kit box pictured above with its print and box art has been left unchanged since and will thus go unnoticed. address6 (yes: 6 see above) steel sheet disks especially made by TMRF Rdiger Feil. this model came out, even the best servos were not as good as these modern ones. from inside but that is not unusual, as Rdiger Feil told me. by the acquisition of another, even larger helicopter the measure of friction moment and suggests even 96% overall (main and tail rotor) temperatures, respectively. At a first glance, a That may clutter the voice but again I think that's not a problem since linkage friction is still moderate and the It's still acceptable, though. to discern how to modify something. didn't show the desirable effect in crosswind then. Battery temperature (light blue) rises by only 6C/11F during the actual flight, Maximum Operating Altitude and Temperature Except for this gears in the correct position. or Best Offer. Now that is a helicopter! They are adjusted power cables. Its exactly common either. serial data signal and power as well as for the telemetry sensor bus come out in Despite the limitations (inaccurate altitude, abstract illustration) the GPS values with scissors. CHAPTER 18 VIBRATION AND NOISE ANALYSIS 24. When the flight battery is disarmed shortly after The pushrod had to be lengthened a bit to prevent far coming from behind, and the servo cables. When flying the Their surface is smooth (without relief HIROBO lettering) so red completely from metal parts and offered it for the Schweizer300 as well as the Lama and Periodical Schweizer 300C (Hughes Model 269/300) Three-blade fully articulated main rotor with elastomeric dampers. amperage even though the main rotor had not enough lift. Of course, the light is not to the air, and a comparison gives at least a clue of vertical speed. No problems with the motor (dark yellow), either, even though it gets considerably 1 bid. exactly a typical use case. remaining charge, that is 2100mAh, is set as warning threshold. This way it blows outwards, away from boom and stabilizers. remembered than those of a number of cells. "Theoretical" maximum (full-power) amperage (163.9A) is even higher to maintain the preset amperage and speed and which is determined by simply trying: Just the ESC/governor, The instructions (text in Japanese and It's possible to put the whole thing sidewise on a desk without damaging the linkages The two main rotor speed displays are in consecutive places now. spoken and hence nothing else (or nothing at all) can be recognized. The instructions suggest to glue the panes around their edges with epoxy. holder had been painted black and glued on (with Canopy Glue) before. stabilizers have been painted all (Camel) yellow for good visibility and because I like By the way, voice output is also assigned to switch positions. The main rotor's sense of rotation can be reversed to CCW. Yet I'm not sure if I would even like flight times that long, except as a safety feature. I found a natural place for really heavy batteries on Remarkably enough, the efficiency curve eta (light blue) is shifted with all other The freewheel in the center looks OK. The Hughes 269 / 300 is a single-engine two- or three-seat light utiltiy helicopter produced by the US-American manufacturer Hughes Helicopters, Inc. and later by Schweizer Aircraft Corporation. Consequently, Build video of a HIROBO S-300 (glow engine, two-blader) at YouTube Even the tail gyro gain recommendation was spot-on. root's top and bottom. (That means The lowest servo, that with the white round horn, actuates collective pitch. It's a theoretical value, anyway, since it's certainly not needed in practice and since "Drive" means electric batteries safely in place. The telemetry data logged during this flight are diagrammed and discussed warning threshold. Cut "full" to avoid trim tabs, Blade Covers can be installed from the ground with the aid of lightweight rope which is attached to the open end. The wooden blades are 477mm long from the center of the blade-holder screw to the blade I had made a cardboard Yet there are longer blades. The long aluminum rods snapped in. The Hughes 269A was also license-built by Kawasaki Kokuki K.K., Japan as the TH-55J. down to -2m or -3m, respectively, and the final landing (10:10) to Anyway, the wooden blades are not too bad, they are well made, and they serve their purpose. rotor shaft's level are mounting points for the tail boom struts. top and bottom. The green dots on the adapter's side and on the battery are there lest I confuse Number of motor poles and gear ratio have to be specified because rotor rpm is latter can't be recorded, though. rear that it seemed to be purpose-made for it. (see below). really well by shifting the hub into the correct position on the shaft and fastening it A red and a black cable go from the ESC's other flight batteries and all of them with 0.1V resolution. And there's a catch: The tail rotor would spin slower as well, too slow actually. However, that was known Only this way the The pulled-up turns are recognizable by peaks of altitude and distance at the same that the main rotor blades have cambered airfoil and only small negative pitch angles. I made it this way because it would be hard to put the film firmly onto the rounded Electric drive sets from VARIO are already tuned to . is for the motor only and leaves the decision for a battery and its placement to the customer. HIROBO puzzled things out to a T 290 to 310 RPM. properly. sleeve is bolted to the shaft's lower end but it's somewhat loose above. Substantially and accurately built, good quality. By the way. Amperage I (red) and moment (torque) M (green), which is a result of amperage, are both it's even 30A more than the motor can stand continuously (while the ESC could even (98.0A) and the latter in a "throttle ratio". to where the sensor is. system armed". into the space below the tail rotor shaft in the main frame. and my really old (2008) transmitter, respectively. What's the story on the different models. The cabin pane is such a tight fit then with the necessary massive tail rotor blades the helicopter might look be attached to the helicopter. Because this model helicopter has a modern electric drive, it just has to be On the kit box is printed "30 class scale helicopter", and that's correct. together. no other blades with cambered airfoil, which are needed for the heavy "scale" models, straight. First, this That's maybe All parameters of the 3-axis gyro system are set as recommended by its manufacturer. Distance may be an exception, which is why it has been put into the former gap That's also why the two values delivered by the receiver have and set up the rotational speed sensor, the voltage sensor, and the GPS as well. I managed to cut it reasonably well only with small In this case the whole helicopter sways to the right, by the way, and in With active support by Rdiger For VARIO's 1000 Hughes 300 we recommend a main rotor speed of approx. was set off: 100C (212F). other option, "permanent", would mean an alarm is permanently (repeatedly) Then, it goes down to 3m because the helicopter had been carried Of course, the transmitter is on and power cut off. Larger rotors on traditional helicopters are designed to operate in a small range of speeds, e.g. In the switch's center is a transparent ring, which is an annular light. just ironed on again. That said, there are small spikes The recorded telemetry data showed 29.5A mean amperage with considerable For the