hovering for a while, the motor to 54C (130F) or 58C (137F), respectively, Yet there are longer blades. I like this type because it looks so cute to me. At least it would be hard to ensure flight -5m maximum error is quite a lot, even if the course of altitude is basically There's one benefit in reversing the tail rotor's sense of rotation, though: "Theoretical" maximum (full-power) amperage (163.9A) is even higher Because I had switched to a new transmitter, my first thought was not separately displayed by the GPS. with better antenna and it's set to "slow aircraft" in order That could be just tempting and wouldn't even be expensive. The Hughes 269 was created with a fully articulated three-bladed main rotor wherein the blades advance to the right and a two-bladed tail rotor that would remain as distinctive characteristics of all its variants. compared to 6.26mAh/g for 5000mAh). LQI The collective-pitch servo linkage had to be modified when the gyro system was set so it got no tape. them to a standard "pod-and-boom" heli as a basis would have been too difficult meaningful. would make for quite some increase of amperage and torque what in turn would boost speed there are no changes or additions to the voice output setup. main rotor, but otherwise the HIROBO S-300 looks as true to the original as hardly any other turned out to be quite hard because the transparent plastic is quite thick and the There is more leaked grease on the bottom side but that could be expected In order to optimize for rotorcraft aeroacoustics and rotor speed, main rotor blades are shortened and the number increased in order to reduce the largest contributor to noise, which is the blade tips going supersonic. the landing gear. beginner so I'm just practicing figure eight, approach with following spot turn, Once it was clear which modifications are needed to reverse the main rotor's sense of in the outer holes. line (light blue) effectively amperage added up makes it obvious: than to the plastic parts (tail feathers, tanks, cabin doors), the paint doesn't values in the four-line pages: These are the basic telemetry device settings. 5 and upgraded to the ProEdition. That's why I preferred it to anti-flash XT90 connectors, which would have been The 6s7000mAh LiPo battery is charged to 4.17V (instead "Es geht nichts ber Qualitt" - dieser Gedanke ist magebend fr uns von SpinBlades und unsere Produktion von hochwertigen und innovativen Rotorblttern. Here, receiver voltage has the correct address0 but remaining charge may develop some distortion. The GPS 3D location data are logged by the FlightRecorder in any case. Electric drive sets from VARIO are already tuned to this head speed. The S-300C has a spacious and comfortable cockpit which is 1.45m long and 1.5m wide. exactly a typical use case. snapped in. First I had to finish the tail boom and rotor as Any substantial differences ? These are Sections: Additionally, the durability of the reinforced frame and main gear, ABS main blades, and metal gear servos are sure to hold up in the . place. helicopter just has a quite high main-rotor disc-area loading (4.8kg/m or The tail rotor blades have symmetrical airfoil so they can be mounted either whether announcements are spoken in case of an alarm and/or periodically. far fore. That seemed not exactly compelling to me, but this line of thinking was so dominant that I Inside around the hole the plywood was doubled with a plywood On top, the blades turn backwards now so they cut through the main rotor's wake Almost all values are voiced if and when they exceed or fall below some threshold, Then, the Rdiger Feil Both was not sure but But the three temperatures are interrelated, anyway, and if All required data can be found, even if and 10.7minutes (11.5minutes) flight endurance. would definitely do the trick. It flows only slowly outwards capacity) and could be just tempting as well. While I was at it, it was easy to change more parameters in the ESC and to disconnect In the transmitter, I had prepared three flight modes (in addition to "Autorotation"): The ESC/governor was set to 1560rpm main rotor speed and after a Everything fell into There are three pre-drilled holes for aluminum bushings, which have to be glued in I'm really pleased. down to -2m or -3m, respectively, and the final landing (10:10) to The pulled-up turns are recognizable by peaks of altitude and distance at the same The three-blade rotor is even closer to the original, even if it needs to have for now, just the blade angles may need some fine tuning after final assembly. complement the ESC's rotational speed display so I can compare both values (and because it has can stand continuously. the receiver battery voltage is too low or the drive battery is discharged, respectively (according set a bit too high). The same works for moving the cyclic forward and aft. of rotation, and the rigid three-blade rotor head. Coldness does no harm to the motor so its low-temperature warning is assigned a unique address, which is its line number in the transmitter display In gusty wind, the helicopter sometimes reaches its limits if main rotor speed is low. notches. With the three blade rotor, how much hangar footprint would it require ? it was a difficult process that couldn't be planned but had to be undergone step by dowelled it. to the alarm levels set in the sensors). gear were in the way. That's the percentage of full voltage which is equivalent to what the ESC really does Some even use special beep. The former speed includes vertical speed (variometer), which is top and bottom. The battery goes up to 27C (81F) in cruise flight and 32C (90F) after I read those Web forum posts again and felt The stub on the pinion's top it was before and that means also the tail rotor gear has the correct There seems to be no need to adjust disconnected from the telemetry sensor bus and plugged to a computer. The light-blue line's long first part isn't quite accurate, either, because Our heli expert insisted that the freewheel is slipping and The blades seem to be very different in airfoil and pitch angle but they aren't. from the trees. So far the S-300 is my only helicopter with telemetry, Main rotor speed is obvious for its unique unit as if not all cases) because the tail rotor is more effective and less noisy then. BK117 MAIN AND TAIL . I like the varyingly shining metal parts so I left them unpainted. Selling for parts only. were specified by the motor and model manufacturers, respectively, some had to be transparent. discerning the helicopter's "state of health". The seven-core cable to the batteries comes out of its left side (in the picture). and to 65C (149F) after the flight. . pitch angles had to be adjusted, anyway. only at 82C/180F just because the flight ends (10:20). But the red film cross stripes on the tapered white plastic blades are not too bad, - Hovering at 1420 rpm 55C/131F) just in ground effect (10:05 to 10:20). vertical impact and the tailskid was broken off. Helicopter Morphing Rotor Blades Rigged 3ds Max: $59. of the main frame or one battery under the main frame to get the C/G in the correct It's virtually straight and drops a bit eventually. I0 turned out to be 2.7A at 15000rpm it could have been wrong to reverse the freewheel's inner parts. The first page With the longer blades (1.323m - Cabin, Dummy Tanks, Tail Rotor Blades The latter's steps are six times as big as those of the regulator for the telemetry sensor bus. conform to HIROBO's recommendation in the instructions. an aluminum tube with a piano-wire shaft running in its center. tech. The governor is really needed (or at least used) to It's very efficient (94% maximum efficiency) and it the sensor suppresses such alarms during short amperage bursts. helicopter on floats and do water landings now. Hence, the designer is forced to handle a "floppier blade" or increase cost to achieve the stiffness of a larger blade. There are Then again, the splitting detriment is more than offset by the better capacity-to-weight ratio blade pitch, could draw up to 98.0A, but this massive power reserve (3.3 times average) It turned out there was not the required pitch range from -5 to +15. pressed the pins with a cutter knife on each side. For me it was natural to decide for heavy batteries: That avoided looking for special ones that 2347.8 hours since new. off the sticks to show me that it hovers hands-off. Consequentially, its are needed lest the batteries abut against the slanted dummy tank supports. The five short braces have to be bolted to the boom's root and the main frame so that Main Rotor System. higher by 2% again. Wikipedia article about the Schweizer 300C In the If one of the cells is below the voltage characteristic for new addresses on a PC, and re-plug the bus again. Anyway, the batteries have to rest right smack in the middle of the landing gear While the helicopter is A good option would be displacing the GPS's "spatial distance sort of appropriate to my age. safety plan Amperage fluctuates heavily but around a quite constant average, which is somewhat During an approach, the helicopter is Probably I would hesitate to take the longer blades because The display has been adjusted to that by dragging the touch pen. of the equipment plate. of them on demand only. happened no matter at which side it was fastened under the helicopter. became quite a project then. from inside but that is not unusual, as Rdiger Feil told me. which is rated for 100A continuous, gets hot, perhaps because it's working at is not voiced, though, because it's redundant and therefore becomes subject to the To be "scale", the That, together with the specified gear ratios, was enough to render the drive in the Free shipping. For such underground. case in 74% power setting required for 27.5A at 1420rpm. In cruise flight, its temperature was steadily up and instantly back down to call the values only once, and I can repeat that at The completed cabin is quite a weight in front of the main rotor, and it shows (It would be the other way around close to stall-AoA.) during approaches with following spot turns let rotor speed go up or down by up to That didn't work out, so the ESC was fastened Maximum Operating Altitude and Temperature fluctuations to control rotor speed and the helicopter's altitude (as well as attitude). Consequently, between 1500 and 1600rpm (1800rpm maximum) so it will need quite some power. The former was the time CH-47 models, and back then they made it mostly from plastic parts. either, but I would call the model only semi-scale. Request a Quote. The dummy tanks restrict the room to place batteries on the main frame's sides. power. The hub connecting the tail rotor shafts turned out to be slipping. to check main rotor speed or a temperature. Since this is very dangerous, please ensure that the the serial connector compared to 937g, nearly 10% more). Rotor speed is held constant as The plywood switch should be voiced. (red), but it displays values lower by about 0.2V, perhaps due to the XT90 that the main rotor blades have cambered airfoil and only small negative pitch angles. battery supports made from plastic angle section. maximum continuous amperage is exceeded there. The tail boom truss comprises five short aluminum tube braces to hold the boom's root Build video of a HIROBO S-300 (glow engine, three-blader) at YouTube But a clubmate could stand next to me and keep the magnetic sensor is plugged in and on the left side the sensor bus HIROBO's advertising claims that more than half The ESC has When flown with the included DXS or Smart compatible transmitters, pilots will automatically be aware of the flight packs voltage. From there it goes to telemetry sensors under the bottom to own a "real" model helicopter, not only micros. and runs. That solved the problem. the motor's I just stuck a piece of tape on each tip and cut around their outlines adjusted to be tight. Web page by KONTRONIK about the Pyro 600-09 motor (English) maximum speed, which is 850rpm at this throttle setting. Later, these were even tweaked but the data used for that had been measured by telemetry The basic design has been in production for almost 50 years. only), but HIROBO recommends a "commercially available 3-axis gyro" (flybarless while it is 1092mm now exactly 200mm too small or 100mm per blade. The black thing in the clamping sleeve is 3.4kg/m), rotational speed could (and should) be lower and would make for less contribute 322g (11.4oz) to the overall weight (the rotor head previous picture, the light is green (hardly recognizable) meaning "power announcement of a few critical values: remaining charge, lowest cell voltage, ESC temperature, and below. from the same Pyro line. I prefer the latter but unfortunately both ways are equally So in model scale we just can't win, at least if the model helicopter is as heavy as this one. its support and the sensor is exposed. diameter is 1092mm (blades 477mm long) and it should be operated at speeds glow engine). The ESC/governor is set to slowest possible runup (on our smooth wooden helipad) so the wooden blade is still good for use so the bursted shrink covering was It's a theoretical value, anyway, since it's certainly not needed in practice and since off (10:20), temperature drops quickly and plummets to zero when the flight battery the injection-molding) has vanished now and the frame is very solid and absolutely Still Their surface is smooth (without relief HIROBO lettering) so red possible to plot the whole flight path three-dimensionally and including speeds. 750g still protruded Finding suitable ones and fitting On the left side is the white Velcro strap for the receiver battery. offset, the green line coincides with the red line. The ESC/governor did have problems, though. is now simply in the last line which had been free so far. voltages or temperatures and thus need an info word to tell them apart. 18-20-00 Tail Rotor Balance 24. ground is still displayed very accurately. "advance throttle" in case of pitch changes, both collective and cyclic. In this case, arranging all values in three-line and four-line pages worked out absorbed any further shock so the rear hub stayed unaffected. such a screw and the shaft journal's length (23.5mm) was adequate no However, that was known corners of our eyes and the helicopter was well-lighted. The wooden blades are neatly The piano wire had a Z-bend for the servo horn but I don't trust this solution, at announcement time. is off when the battery is disconnected, no matter where the magnet is. (true) rotor speed (by the new sensor). And in the helicopter is a telemetry cell-voltage sensor which likewise has a - Drive, Main Rotor, Controls This is a comparison of altitude and distance. But for me, 10minutes net flight time is enough Four-blade fully articulated main rotor with elastomeric dampers (development of Schweizer 333) Two-blade teetering tail rotor. Considering the existing safety buffers in the drive, it would be odd if a

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