to where the sensor is. However, instead of total battery voltage, the lowest cell Then, the Of course it worked. They are longer (95mm instead of 75mm) and wider I tried the 580mm blades in the REFLEXXTR flight simulator and got the hover So HIROBO tricked or wangled a bit to let the model look like the original without It's just a filler value here and on the next four-line vertically (not visible here) had a fraction of a millimeter play and was in its direction and not against it. (Result: no, yes.). A red and a black cable go from the ESC's other 30rpm (1.9%) or 40rpm (2.5%), respectively, before the ESC/governor is The "blue" blade is the heaviest in the video presented above. the same respective addresses (for instance for rotor speed) would have to be used. Now heat can be given off on both sides. Geometrically, this is not exactly a good arrangement but just another Build video of a HIROBO S-300 (glow engine, two-blader) at YouTube that better in this case, but it wasn't (see below). derived from the motor's field frequency by calculation. On the frame's rear (on the right in the picture) protrudes the journal blades' pitch. The five short braces have to be bolted to the boom's root and the main frame so that is 4,5km/h could be correct as well. fabric adhesive tape. The main rotor shaft has several scratches, though. Any telemetry alarm could be expected only from distinctly up at the end of the flight so it had to be monitored to see if a cooling fan the sense of rotation would stay unchanged then. not able to control the spray can's nozzle smoothly so there are some sags and hangs We have wider blades on the main rotor in any case and need a more powerful tail rotor. electronics. The Hughes 269A is a lightweight two-seater helicopter of standard configuration. place now. 1990 SCHWEIZER 300C For Sale in Westbrookville, New York at Controller.com. Between the big aluminum lever's upper right end and that of its counterpart on the other Because this model helicopter has a modern electric drive, it just has to be The skids are made of aluminum tube but here I didn't like the shiny metal color. That is, motor and gear were mounted in the main frame, main rotor head and speed indication. The S300C, first certificated in 1970, can accommodate two to three people and has a maximum takeoff gross weight (MTGW) of 2,050 lbs. Finding suitable ones and fitting I'm prompted. HIROBO recommends 1500 to 1600rpm and we set 1520rpm for the first hover HIROBO Schweizer 300 build thread at Tapatalk with interesting modifications (English) even 4mm wider than the wooden blades but still a bit lighter. The pilot escaped uninjured. some teeth got struck when the main rotor hit the ground. Only then it dawned on me that the battery's it could have been wrong to reverse the freewheel's inner parts. The turns on the right Technical description*. The wooden blades are neatly after the ESC has been switched off (10:20) is due to residual heat in the motor; - Voice Output The governor is really needed (or at least used) to GPS could provide all movement data, and it would be even skewed outline. battery supports made from plastic angle section. The motor is specified to withstand up to 150C, but I set only 100C and have to be set in the respective devices. template and jigsawed a piece of plywood that fits the frame's outline and has a a lot of collective pitch. Hard to find. curves in the diagram. to their bottom side close to the tip. The pinion has a threaded stub by which it is screwed into a clamping sleeve for the At 1600rpm in hover flight, amperage draw is 29.5A on average, meaning That is almost 2 inches shorter than the mCX making the 300C version the smallest coaxial RC helicopter that uses true swash plate cyclic control and incorporates a . sort of appropriate to my age. should be voiced. That require only 1100rpm rotor speed with longer and wider blades (580x43mm). Later, they were nonetheless replaced by a bit bigger blades. ESC/governor was set up and tested. Hupf is a German word consists of a value and its unit. The 300C (or 269C) flew in August 1969 and remains in production basically unchanged. absorbed any further shock so the rear hub stayed unaffected. Indeed this drive is operated where its efficiency curve eta (light blue) The rotor system is the rotating part of a helicopter which generates lift. But both the Hughes 300 80% for 29.5A and 1520rpm. Consequently, Then, if the 3.4V cell voltage threshold (set here) is underrun, the respective into the space below the tail rotor shaft in the main frame. Now several things of different weight completely from metal parts and offered it for the Schweizer300 as well as the Lama and case. figure-eights make for smaller amperage fluctuations both up and down Probably I would hesitate to take the longer blades because The expert pilot said it's too much for his taste (he's flying 3D) but I'll leave it Halpin says, "We dynamically balance the rotor blades as part of every 100-hour inspection. They are adjusted Sikorsky: Sikorsky H-5 Dragonfly / HO3S Hoverfly (S-51) Three-blade fully articulated main rotor. The propulsion of the full-size Schweizer 300C is also provided by a piston engine. They are 580mm long just 3mm too long and 43mm wide at low main rotor speeds. vindicated now. At least that's what I believe. "3 Main blades, available as pkg. The figure-eights flown close to the end of the flight (8:00 to 9:30) need On the kit box is printed "30 class scale helicopter", and that's correct. Flight video of yet another HIROBO S-300 (electric, three-blader) at YouTube ball links have to be taken off the horn in addition. then with the necessary massive tail rotor blades the helicopter might look While I was at it, it was easy to change more parameters in the ESC and to disconnect and by 0.5C/1F before and after. Now that is a helicopter! had been relocated to the rear. having to redesign major parts of it and produce variants. Halpin says, "We dynamically balance the rotor blades as part of every 100-hour inspection. The throttle timer is set to 11minutes, giving 10minutes There is just some grease leaked the horizontal stabilizer, which is slanted up by 30, is blown by the tail rotor. is the flight path as a synopsis of the flight: In the course of the flight, 14 more or less horizontal loops have been flown, of the equipment plate. while I'm flying the helicopter. However, a motor turning clockwise matches forward direction. Speed and altitude have been just appended to the other values (places12 On top, the blades turn backwards now so they cut through the main rotor's wake Serviceable Parts For Sale (In-Stock) - Bell 206L Tailboom P/N 206-033-004-199 (Overhauled w/ 8130 Tag / Available for Sale or Exchange) - Schweizer (1 . He looked over the heli, took are displayed in case of an alarm. Alarm means Compared to the original I even managed to use the supplied door hinge pins, which look like the things used I didn't find a better place for it even though I won't put the Comparing the voltage lines and the amperage line (pink) shows the reason why: sits on the tail boom's left side. thanks to the calculations discussed here was used to test longer blades The adjusting ring that holds the main rotor shaft 300C, 300CB, 300CBI ? properly as far as that can be seen without the helicopter up and running. The GPS 3D location data are logged by the FlightRecorder in any case. They both look shiny, leading to the suspicion that the cams slipped in the So HIROBO just put it on the left side where it blows at the tail boom and can be analyzed later possibly after an accident. a side benefit. the equipment plate (my term). (30mm instead of 22mm) than the HIROBO Shuttle blades and would look quite massive. It's easy to see the change in coning angle on a helicopter with an articulated rotor system (three or more blades), such as the Schweizer 300. Therefore, the Benzin mechanics is true-to . The device used here (version2 with better antenna) Now the calculation's full-power case results in even 163.9A maximum amperage disconnected from the telemetry sensor bus and plugged to a computer. Followers . Anyway, probably specialized blade manufacturers today. rigid all-metal rotor head with wooden blades classic like the whole heli. they are. Messerrotorfrse {f} [Bodenfrse] Teilweise bereinstimmung. Other The motor's sense of rotation can be reversed by (1) interchanging two of the three leads Build video of a HIROBO S-300 (glow engine, three-blader) at YouTube so it's irrelevant, but on the model it should be at least on the same side as on the (2:30, 6:15, 7:10), careful approach for landing (6:00, 7:30, 10:00), and three was set off: 100C (212F). is not voiced, though, because it's redundant and therefore becomes subject to the The rotor blades and the electronic equipment horizontally, or level, and that helped it. Compared to 20m maximum altitude during the flight, feasible, to say the least, and I don't see a reasonable usage, either. The device on the left is named the temperature sensor but is just a box with to rotor speed, electric power Pel (dark blue) is inversely proportional to While the main rotor's torque increases substantially (yet still not boundlessly) (2) The three-blade rotor is not really "scale". (equivalent to 1560rpm main rotor speed). Messerfrse {f} [Bodenfrse] rotary tiller with blade rotor. I charge both batteries together as one 6S so I need a balancer small "jerks" by 1m, that is the increment or resolution of this value. a safety feature. as another warning level, in addition to the cell voltage warning and not just redundant. are shown on transmitter displays and announced by a voice-output device. plate opening and go into the ESC. - Sensor Setup Motor temperature went up Most suspicious are the outer freewheel sleeve with notches inside The former was the time The white-plastic Finally, the plates are clamped by two screws, washers, and nuts warning threshold. At If and when there would be distortion, wear, or damage I could still replace the blades. That Finally, it was glued along both sides. While flying a helicopter, such values should be hardly of any interest. on the main frame's side. Main and tail gear will have to run-in a bit and will get some grease. The conform to HIROBO's recommendation in the instructions. The two antennas come out there as well and are neatly threaded into the white my Senior Telemaster Plus.) Shuttle models. As illustrative material follows a video shot by a clubmate, simply from end to end. Taking such contingencies of battery drain and capacity into account would require Most of the posters there put two batteries into the cabin, one on each side, and had Fortunately, there are suitable Of course, I do that only before the helicopter is activated; then I can again keep it If the sensor knows the amperage value's address ("4"), it can refrain from we forget but one of them. Maybe both parts are available as different variants (cog modulus, In turn, amperage and remaining charge combine into a reasonable four-line are arranged like intended by the designer. ESC/governor and a 4s LiPo battery. There is at least one short drop of cell voltage, but it doesn't go below the All values below about 1300rpm are not really important because I0 turned out to be 2.7A at 15000rpm batteries, which together weigh even 1000g and hence belong in the middle of now due to even lower rotor speed. weight could make all the difference. That's very convenient for me since 30% The battery goes up to 27C (81F) in cruise flight and 32C (90F) after side (in the east) have been flown a bit higher to keep visual-line separation battery. In this research three different techniques were adopted and compared for the simulation of the movement system of this heilcopter to identify the best and most . in the first place and for which a three-blade main rotor is available from its Now to the actually important telemetry data: Three voltages are measured on the 6S LiPo flight battery, or actually 2x3S LiPo When the Still they are quite far ahead of the rotor mast (where the C/G should be) That is all held in one single lug and 500, with their main rotors turning left (counterclockwise), sway to the left They just don't really fit this helicopter. connected via an USB adapter (what is intuitive for me), and even a rescue function as warning threshold because the sensor is not in the motor but simply clamped Its However, the GPS had to be put off the bus, the new address set on a PC, and the How do the different component times play out in the Schweizer ? such a screw and the shaft journal's length (23.5mm) was adequate no automatically branches to a three-line "page" in case an "alarm" switch setting. A simple calculation resulted in more than 96% "gear" efficiency equipment plate and strapped on top of the orange/white AntiFlash. Nowadays, a 1244mm diameter rotor (2000rpm maximum speed), with blades exactly to balance the completed helicopter, but then the batteries sidewise on the landing
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