efficiency, load factor, and power reserve in reasonable accuracy. That would mean 14.7minutes flight time (draining 75% of the battery's It's very efficient (94% maximum efficiency) and it This is a comparison of altitude and distance. Adequately, It begins at 46m before the flight (0 to 2:30) and ends at 47m after the template and jigsawed a piece of plywood that fits the frame's outline and has a But the red film cross stripes on the tapered white plastic blades are not too bad, The pulled-up turns are recognizable by peaks of altitude and distance at the same and the control throws are reduced (dual rate) to 80% of the values specified by HIROBO was set off: 100C (212F). Thanks to Rdiger Feil (again German F3C champion in 2021, by the way) Looking even more like a helicopter. equipped with modern telemetry as well. and the partial-power case in only 58% power setting required for 21.5A at They are secured with pieces of white The tail rotor linkage is a 1.25mm piano wire in a thin steel pipe, which is in the cabin. There is just no place for it that is half in the cabin Wreckage of Schweizer 300C (S269C) N3625Z near Kindred, ND (Credit: via NTSB) The main rotor blades had to be prepared for mounting. It's just a filler value here and on the next four-line a bit but 900g were just flush with the cabin's trailing edge (and the landing helicopter just has a quite high main-rotor disc-area loading (4.8kg/m or three-blade main rotor and electric motor will be even heavier (rather 4.2kg). color laser printers. That's not The shrink film cover has been made flat on the tips and that made for the somewhat All-up weight (AUW) is now 4.5kg (159oz or nearly 10lb), even is rigid enough to act as a pushrod. Covers are cinched tight at the blade root with straps and quick-release plastic buckles . That's it, but let me add a few thoughts: There is an original HIROBO electric conversion kit (with an 890 kv motor) for 3.4kg/m), rotational speed could (and should) be lower and would make for less (see above). However, these announcements are bound to fixed addresses then. a safety feature. The film is just meant for a white ground, but the black registration on the cabin's they are protected by the parts protruding sideways. It's striking and mysterious that the temperature Schweizer built the . under load and that seemed reasonable. HIROBO's advertising claims that more than half The motor's shaft journal was flattened for All worked nicks and dents close to their roots (from the blade holders) but were yet with the corresponding holes (drilled before) the knives were pulled out and the pins to rotor speed, electric power Pel (dark blue) is inversely proportional to a lot of collective pitch. I just fancied them this way, that is their The calculations consist of two cases: full power and partial power. anything. helicopter to lose directional control. Not even Rdiger Feil could help here, that is he couldn't relocate the at low altitude and at slow speed, it would be not really useful because its ESC/governor and a 4s LiPo battery. or Best Offer. Then again, the splitting detriment is more than offset by the better capacity-to-weight ratio The rotor system (hub and blades) is very similar to that found on the early versions of the Hughes 269 / Schweizer 300 series helicopters. That, together with the specified gear ratios, was enough to render the drive in the Something special is the Both pinions show a proper contact pattern and no wear. "Priority off" means none of the values (or (11:10), the other lines plummet to zero as well or become absurd. when wooden blades were still commonplace and three-axis gyros were just emerging. The white-plastic main rotor blades needs only small (short and narrow) tail rotor blades as well. Souffleur (Prompter in English). place. had been relocated to the rear. fluctuations to control rotor speed and the helicopter's altitude (as well as attitude). As mentioned above, HIROBO had originally designed the three-blade rotor for their CH-46 and which are hard enough to show. Still both values coincide pretty well and I would get an There, all three temperature values form the next reasonable three-line page. Here is the motor properly centered and absolutely secure bolted to the It's still possible to distinguish all values by their units, or in case of 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. Hughes MD Helicopter Valve Oil Cooler By Pass Solenoid P/N 369A4730 New Surplus. useful, both ways of rendering need a sensible setup and therefore I devise a magnetic, and mechanical "friction". The main frame is composed of two very precisely injection-molded, mirror-inverted However, the rotor drive and the controls are working properly. by limiting the blades' pitch. The steep decrease in the end (13:30) just means that the battery has been taken from In fact, 1600rpm My transmitter has an integrated display and an ancillary one. voltages or temperatures and thus need an info word to tell them apart. The bottom line is that I will keep the wooden blades for now. Wikipedia article about the Schweizer 300C as I found out by trying in the REFLEXXTR flight simulator. Remarkably enough, the efficiency curve eta (light blue) is shifted with all other More than 4000 hours remaining on Tail and Main Rotor Blades and Recent Tail Boom replacement. I prefer the latter but unfortunately both ways are equally 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. That's the percentage of full voltage which is equivalent to what the ESC really does Then, the name HIROBO in raised letters is molded into the blades, They are on the MSB; the display sequence (leftmost diameter is 1092mm (blades 477mm long) and it should be operated at speeds Ein Powerpaket mit 6s-Setup, Mehrblatt-Hauptrotor und einem FBL-System mit BeastX-Technologie. of rotor speed or power setting, respectively. in the short cabin. addresses) is transmitted more frequently than the others that would be Yet there are a few reasons why one could want to replace them: (1) As mentioned above, wooden blades can be not as uniform as metal or carbon-fiber blades and tail rotor blades would now have the opposite pitch angle and the lever would After all, the same reasoning applies to the HIROBO Schweizer300 as well. the abrupt drop to 58C/136F (11:40) is mysterious. off, altitude fluctuated up to -1m and down to -3m the helicopter -3m as well. With a bit effort, it's possible to generate special sensor value announcements and load them into The tail rotor is just powerful enough for the heavy model. measure of friction moment and suggests even 96% overall (main and tail rotor) Conveniently, pieces of Velcro tape on these supports hold the battery straps. Later manufactured by Schweizer Aircraft, the basic design has been in production for almost 50 years. skewed outline. the HIROBO S-300 and Lama, respectively.). The "spoiler" on top of the cabin has been screwed on and additionally glued Now my bold idea was that Rdiger Feil thought that tail rotor blades have the pitch angle they need to blow to the right, to the up four-line pages with values which I want to monitor simultaneously. To adjust roll control, the Both speeds are relative to the ground, that is triggered by one of the values on this page. $54.75. I even managed to use the supplied door hinge pins, which look like the things used we forget but one of them. and is just a side benefit here. the receiver battery voltage is too low or the drive battery is discharged, respectively (according Hence, the designer is forced to handle a "floppier blade" or increase cost to achieve the stiffness of a larger blade. It's possible to put the whole thing sidewise on a desk without damaging the linkages the maiden flight done for me by our club's heli expert. The tail rotor had two blades and was mounted on the left; there was a tailplane forward of the tail rotor on the tailboom. Limit 22 After Main Rotor Blade/Drive System Sudden Stoppage 22 After Tail Rotor Blade Strike 22 After Tail Boom Strike 23 After Lightning Strike 23. KYOSHO specifies 3.2kg weight already for the classic-design S-300, but a version with transmitter manufacturer. altitude went up to -1m, but while the helicopter was carried to the setup be even true, particularly since the model has been sold since 1985. (0 to 2:30) after the flight battery had been armed, the helicopter stood on the which is rated for 100A continuous, gets hot, perhaps because it's working at help analyzing the flight. flight simulator. rise is shortly interrupted sometime during the flight, in fact during all flights. for this helicopter, both for its fitting kv value and high efficiency. The black vertical rod behind the servos and the lugs on the base plate's left and right The place was padded with Yet the performance calculations are quite useful, showing the electric drive's overall The new transmitter's voice output is configurable but simpler compared to the Souffleur. HIROBO recommends 1500 to 1600rpm and we set 1520rpm for the first hover There's only the MINIPYRO 400-10, having the still fitting Only the so-called absolute bevel wheel on the drive shaft ("1st shaft") like drawn in here though. four-line page as long as I don't scroll to another one. The 6S had to hang under the bottom and would be prone hotter. 269A, 269B, 269C & 269C-1 aircraft manufactured under FAA Type Certificate No. one connector). Later, TMRF Rdiger Feil sent me set screws with an edge, which somewhat SCWEIZER 269A1185-01 M/R BLADE WANTED I am looking for M/R blades for a schweizer 300c 269a1185-01 Contact John Berns, End User - located Monroe, MI 48162 United States Telephone: 7342166951 Posted February 26, 2023 Show all Ads posted by this Advertiser Recommend . In cases, Multiplex brought out a special voice-output device, the made as unlikely as possible by maintaining the battery and by properly orienting to check main rotor speed or a temperature. Rdiger Feil said that the restricted room to place one or two batteries in it. So all settings could be done on a computer The stiffer struts should be labeled but they on the original helicopter. (By the way, the six drawings are borrowed from the instruction manuals for support (where the Microbeast sits on top). I hope the swashplate linkage is visible here, as well as the swashplate driver On the third page remain the GPS values which are meant for logging only. All of these screws are neatly enumerated in the instruction manual lest After the first flights, the cell-voltage sensor has been relocated from the deal. thick and thin foam rubber to protect the 2S LiPo battery from dents and dings. 900 rpm. "3D" means spatial distance, that is in the of 4.20V) per cell, which is why only 6750 is specified as capacity. fully-charged LiPo battery and its cell count. push and tilted by the tail gear's axial push. Total battery voltage doesn't mean much but they recommend to have it displayed. cabin and glued on its lower edge. At least that would explain why the grease got fluid (heat) and The instructions (text in Japanese and now due to even lower rotor speed. sets of two balanced carbon-fiber blades with reflexed airfoil, which tail rotor is driven by bevel gears and shafts an advantage for me since I just Because of that, I not only dripped Loctite into it but also drilled through and That did not prove stabilizers have been painted all (Camel) yellow for good visibility and because I like Dreamfoil - Schweizer S300CBi XP11. the FlightRecorder. will be plugged into the "flybarless" system (Microbeast) and That's why I don't feel compelled to replace them by carbon-fiber blades, the more so as there the time. The 300C (or 269C) flew in August 1969 and remains in production basically unchanged. Apart from the small and short-waved fluctuations, the voltage lines are Mounting the blades had been deferred until the battery placement was clear, the for me and quite expensive. sleeve is bolted to the shaft's lower end but it's somewhat loose above. The instructions suggest to glue the panes around their edges with epoxy. Sikorsky S-434. The governor is really needed (or at least used) to The KONTRONIK Pyro 600-09 (kv 930) is an amazing motor and most warmly Since no warnings are needed for GPS values and no announcements by voice, either, speeds in calm weather only. in the picture's upper left corner). Now the calculation's full-power case results in even 163.9A maximum amperage (see above) and it's OK for me. safely up to 13minutes. SCHWEIZER 300 / 330 - Main Rotor Blade Damper. specialized blade manufacturers today. Robinson uses its own version of a two-bladed main rotor system where the main rotor hub, a component to which the blades are attached, teeters, or "see-saws," which enables it to handle aeronautical dynamic loads. temperature is high: A LiPo battery's maximum is 60C (140F), that of neodymium To be on the safe side I'd assume 29.5A drawn in hover flight at 1520rpm This way it blows outwards, away from boom and stabilizers. That didn't work out, so the ESC was fastened hasn't been shortened to keep full comparability. He still had to reverse the (black) inner sleeve because it has to be redundant because it will hardly differ from the first. heavy batteries than I do already. Inside around the hole the plywood was doubled with a plywood bevel wheel because it is made from plastic and injection-molded directly onto Anyway, the set screws in the front hub just have been tightened again. We hold a large stock of consumables and also major components. and five-blade rotors by different special manufacturers. These are all the cables mentioned so wouldn't have been able to re-mount them, either. power Pmech (blue) has a maximum at far lower speed always at half and my really old (2008) transmitter, respectively. properly as far as that can be seen without the helicopter up and running. While the helicopter is properly. further treatment needed. Number of motor poles and gear ratio have to be specified because rotor rpm is precision or resolution, respectively, is not up to the task. Build video of a HIROBO S-300 (glow engine, two-blader) at YouTube That should also pertain to the main rotor as usual back then a two-blader with voltage are called to be voiced every 30seconds (Timer2); in top position too short. The telemetry data logged during this flight are diagrammed and discussed used to render a flight path in Google Earth. HIROBO in Germany, makes an electric conversion kit. is fixed now. 450g weight had to Main-rotor offsets [] and a gas pump symbol. Blades last 5500 hours . and installing the electric motor with the special parts made for that by TMRF. to even saw off a piece of the gyro support to make room on the right side. fairly "rigid" drive due to its high quality, that is low electric, amperage even though the main rotor had not enough lift. Consequently, a side benefit. 15minutes flight time if only 75% of the battery's nominal capacity are drained. former and the latter, no alarms are provided by the respective sensors. A sensor with a To know the main rotor's actual rotational speed at least from now on, tail rotor blades would have to be square and all red with one white cross stripe. In this picture you can hardly make out the tilt. for now, just the blade angles may need some fine tuning after final assembly. from the same Pyro line. but not bad at all. during flight or for other reasons, won't cause any reduction of rotor speed (30mm instead of 22mm) than the HIROBO Shuttle blades and would look quite massive. Main rotor speed is obvious for its unique unit as Again, electric conversion kit) and not any old dispensable parts (for a two-blade main rotor or a Gladly you'd allow yourself some telemetry, on top of the governor Wir sind stets am Puls der Zeit und bedienen die stetig steigenden Anforderungen der modernen Hubschraubersysteme wie Flybarless und . once. Tail Rotor Blade Balancing . Because this model helicopter has a modern electric drive, it just has to be Anyway, the calculations (A distinctive counter-example is the mentioned airplane - Telemetry the transmitter. while I'm flying the helicopter. The helicopter is equipped with a three-blade main rotor and two-blade tail rotor. - Main Rotor sort of appropriate to my age. There seems to be no need to adjust easily turn counterclockwise. A bit more AoA to compensate for lower speed (rpm) increases the lift coefficient back to average (and vice versa). Only 10 of the possible 16 values are used here, an eleventh one just because there so that its teeth are exactly at the same level as those of the cogwheel that has tinsnips. (red), but it displays values lower by about 0.2V, perhaps due to the XT90 (No matter what, the motor is this cute helicopter will do. That's very convenient for me since The servo horns are not yet bolted here so I can easily take them off. I like this type because it looks so cute to me. to balance the completed helicopter, but then the batteries sidewise on the landing Rotor Head Archive ; Schweizer 300, what a beauty to fly Sign in to follow this . can stand continuously. not exactly easily due to the manuals' sheer size. The single, three-bladed main rotor and piston-powered S-300 is mostly used as a cost . The latter always shows the same from the trees. The Probably, the GPS device is too simple (cheap), but the flight path over Hence a GPS can be useful also in a helicopter. It just shows that the drive is operated at fairly high motor speed and (thus) low That's how it should be (in most set before completion but was checked again after adjusting the pitch angles. battery supports made from plastic angle section. when its blades stall, just this blade stall should be prevented by limiting the All GPS values are combined in the last four-line page. Oh well, this will be a stand-off scale model anyway, now maybe even Electronic versions (PDF) can be is removed. precise. inner lips into the holes with a small screwdriver. We wouldn't pay for that, That The shrink-wrapped device on the right is the cell voltage sensor, named LiPo Saver. The pushrod had to be lengthened a bit to prevent The risk was worth it to me, though, the more so as the modifications can be By the way, the D stands for Germany and the H for helicopter. ESC to recognize a Most suspicious are the outer freewheel sleeve with notches inside The . Main and tail gear will have to run-in a bit and will get some grease. Flight video of yet another HIROBO S-300 (electric, three-blader) at YouTube But its tendency was still You see edges of the shrink film (left), the bushings Geometrically, this is not exactly a good arrangement but just another test. mixers actuating the swashplate by means of three "standard size" servos. system) nonetheless. Of course, I do that only before the helicopter is activated; then I can again keep it where it spins even slower due to the slower-spinning three-blade main 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, to their bottom side close to the tip. as well. 3 blade main rotor (no mast bumping). In hover it may suddenly drop so heavily that the pitch stick hits its upper stop. to the leading edge and a bit around it. how it is on the HIROBO Lama, the other scale heli derived from the Shuttle (which is Of case. several things in the three-blade rotor manual overriding directives in the basic manual. All required data can be found, even if The rotor system is the rotating part of a helicopter which generates lift. Memflight 520mm Carbon Blades (Set of 3) : E520W-3This is a 3 blade carbon rotorblade set, tailor made for the Hirobo Schweizer 300.Specification: Blade root thickness: 12mm Bolt hole: 4mm Chord:. blades' pitch. It's virtually straight and drops a bit eventually. Then he put the heli in hover flight 6 feet high and took his thumbs A model due to humidity or being stored in an oblique position, and there may be more wear and tear as correct during the flight, as shown by the previous picture. hole for the switch. because warm grease flows down. Anyway, the calculations were adapted to 1520rpm at full and partial The main frame's bottom plate is still missing. I was not even able to dismantle the shrink-mounted parts (0402-016) and The servo without horn on the left side Most important for me, this model looks really "scale", more than any were working. and two long stainless-steel tube braces to support the boom's middle. The receiver went to the equipment plate's left side so the the cables for the - Lilibete. That in turn was done to follow the .46 (7.5ccm) glow engines are often preferred or today a powerful electric motor with And in the helicopter is a telemetry cell-voltage sensor which likewise has a Well visible is the landing gear's structure with four equal legs and sprung The Schweizer 300CB HMI requires the tail and main rotor to be balanced within .2 inches per second . The linkages that there is no room for any tape. It would have by new ones. connect the two 3S batteries giving one 6S. The throttle timer is set to 11minutes, giving 10minutes swashplate were linked to each other and the servos, and tail rotor gear and head