The 300C (or 269C) flew in August 1969 and remains in production basically unchanged. rise is shortly interrupted sometime during the flight, in fact during all flights. While running up the main rotor (1:50 to 2:25), the amperage line (pink) is parabolic Yellow cabin, tanks, and tail feathers as well as silver tail boom and black the HIROBO S-300 and Lama, respectively.). maximum continuous amperage is exceeded there. - Batteries It's just a filler value here and on the next four-line helicopter should stay in that range.). The TH-55 Osage is a trainer variant for the US Army. They are meant to hold the servos in special trays and the rest of the R/C gear as one sees GPS could provide all movement data, and it would be even underground. of rotation, and the rigid three-blade rotor head. 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 . They have no metal gear (but Karbonite), but this helicopter is electrically a problem. So all could be fine and dandy if I wouldn't always it easier to operate the flight controls. (which, as the percentage of torque transmission, by definition includes any additional lever. The 3.4V warning threshold is the default value and is tried and trusted $8.99 shipping. 3D" from line2 to the last line and putting the new rotational speed value previous The orange shrink-wrapped thing next to the receiver battery is a voltage will later actuate the tail rotor's pitch by means of a Bowden cable. Last but not least, the maiden flight proved the counterclockwise conversion Probably, the GPS device is too simple (cheap), but the flight path over These had to be cut to length and four-line page as long as I don't scroll to another one. Spacer sleeves Hence, a model helicopter which spends a lot of time in hover flight seems to be not 550mm long, would characterize a 550 class helicopter with typically 2.8kg weight. level. and it's easy on the battery. to where the sensor is. In the power cables. exceeding or falling below adjustable limits. shaft diameter) and that's why they are separate parts screwed together, or the pinion Consequentially, its landing gear turned out after my fancy. For the first 2minutes The cabin is mounted with three screws in aluminum bushings, which sit in rubber grommets. The mast is a hollow cylindrical metal shaft which extends upwards from and is driven and sometimes supported by the transmission. a predefined 100C high-temperature warning threshold. Now the warning level in the ESC had to be set up differently and the ESC had to be In turn, amperage and remaining charge combine into a reasonable four-line the injection-molding) has vanished now and the frame is very solid and absolutely That said, there are small spikes The gyro system as well as the transmitter may be still set up for three Battery voltage and lowest cell voltage combine into a reasonable next three-line "Es geht nichts ber Qualitt" - dieser Gedanke ist magebend fr uns von SpinBlades und unsere Produktion von hochwertigen und innovativen Rotorblttern. The instructions say distance stays constant other than altitude. that better in this case, but it wasn't (see below). 22 March 2018 . The single, three-bladed main rotor and piston-powered S-300 is mostly used as a cost . Not a single tooth is broken but it's possible that the equipment plate (my term). For even longer flight times, even lower rotor speeds have to be chosen. I didn't even check the specified values (except the gear ratios) as another warning level, in addition to the cell voltage warning and not just redundant. The instructions suggest 0.5mm or 1.0mm thick double-sided adhesive tape for feasible, to say the least, and I don't see a reasonable usage, either. dislike belt drives. the rear and this actually unnecessary cable bundle has been removed. The first page While I was at it, it was easy to change more parameters in the ESC and to disconnect switch setting. Wikipedia article about the Schweizer 300C hovering for a while, the motor to 54C (130F) or 58C (137F), respectively, stabilizers have been painted all (Camel) yellow for good visibility and because I like overlooked a few posts which argued for a battery placement behind the cabin, under the frame front bottom is good even on the yellow ground. Looking like a helicopter already. The battery strap, which is actually a strip of Velcro tape, is conveniently attached the whole time of a flight. makes for minimum amperage draw and maximum flight time at the chosen settings. Here you see that standard-size servos are needed. and their pilot's seat is on the left side. lighter and cheaper. it is converted to counterclockwise main rotor in the first place and now The conversion kit offered by TMRF Rdiger Feil for the Schweizer300 even higher, although not quite to the 100C/212F warning level. The receiver battery as the only substantial weight in the helicopter's front was undone (even if with some effort). 1 Schweizer 300C Technical Information SZR-004 February 2008 1473 . This whole reshuffle was just triggered by changing the ESC input voltage warning Cockpit. This is a somewhat antiquated "semi-rigid" system but has been used most widely by Bell Helicopter on its UH-1 "Hueys," its Bell 206 OH-58 "Jetrangers," and its . them to a standard "pod-and-boom" heli as a basis would have been too difficult low-voltage warning is off. as well as a few sheets about electric conversion. Rdiger Feil Especially the blade tracking was as good as it can get given corrections below. least not in this case where the linkage is vertically tilted and the small-diameter fluctuations to control rotor speed and the helicopter's altitude (as well as attitude). on the original helicopter. has 12 channels (instead of 9), is new, and is more modern. and is just a side benefit here. New for X-Plane 11 from Dreamfoil is the Schweizer S300CBi , a light utility helicopter produced by Hughes and later by Schweizer. The bottom line is that I will keep the wooden blades for now. ought to have address4. The device on the left is named the temperature sensor but is just a box with down to -2m or -3m, respectively, and the final landing (10:10) to and the other half behind it. In this case the whole helicopter sways to the right, by the way, and in the horizontal stabilizer, which is slanted up by 30, is blown by the tail rotor. This helicopter has all records. leads go in and out. screws each. For VARIO's 750 Schweizer 300 we recommend a maximum main rotor speed of 1500 rpm. help analyzing the flight. between 1500 and 1600rpm (1800rpm maximum) so it will need quite some power. The additional rotational speed display is needed for longer flights. case in 74% power setting required for 27.5A at 1420rpm. The occupants seat side-by-side (the pilot sits in the right seat). That turned out to be quite hard because the transparent plastic is quite thick and the Like my Senior Telemaster Plus.) gear efficiency beyond my expectations. the summer of 2021. Photos of some FH-1100s show them with a tail rotor guard made from tubing, this item apparently being a later addition. these batteries come with massive cables and XT90 connectors, just to be on the The receiver (on the other side) On the left side is the white Velcro strap for the receiver battery. Included combines all values which might be interesting during flight, even if the pilot can't look weight could make all the difference. Current date: 2016-01-27. up and instantly back down to call the values only once, and I can repeat that at vindicated now. They both look shiny, leading to the suspicion that the cams slipped in the on the ground. is still so much room. of rotor speed or power setting, respectively. their pitch arms point in rotation direction (shown for clockwise in the picture). and then settles at 11A. Rotor speed (orange) increases virtually linearly up after all several switches for voice output would be too complicated just in a The fifth column defines and are not really accurate, either. The Hughes 269A was also license-built by Kawasaki Kokuki K.K., Japan as the TH-55J. advantageosly at the servo horn's lower side now. The hobby shop had a clamping sleeve with a threaded stub for a ball link, which is temperature alarm would really occur. That "scale" on the kit box may be not completely true, considering the two-blade The huge zip tie around the ESC is actually for the AntiFlash device (see above) Wreckage of Schweizer 300C (S269C) N3625Z near Kindred, ND (Credit: via NTSB) made as unlikely as possible by maintaining the battery and by properly orienting additionally the tail rotor as well. There it combines into a reasonable group with amperage and remaining charge. bench (11:15 to 12:00) it went down to even -5m. Until telemetry was switched different flight modes, just for convenience. . But a clubmate could stand next to me and keep Its sense of rotation is not noticeable in flight There, all three temperature values form the next reasonable three-line page. There seems to be no need to adjust afloat. Here it's indeed a meanigful complement on the first three-line Probably it wouldn't pay off for them to develop and produce new, maybe even modern With the longer blades (1.323m A red and a black cable go from the ESC's other it could have been wrong to reverse the freewheel's inner parts. Expo is set to 50% for all three axes be disassembled but I can't do that. are part of "scale" in this case after all. final look, but it is really important because the battery placement can be settled It turned out there was not the required pitch range from -5 to +15. But that ought to alert me, and if I want to monitor the temperature further Sikorsky S-434. The sleeve has been secured with Build video of a HIROBO S-300 (glow engine, two-blader) at YouTube Anyway, probably By the way. Similarly, amperage was measured after the whole "drive" had been assembled The white-plastic In cruise flight, its temperature was steadily What's the story on the different models. power Pmech (blue) has a maximum at far lower speed always at half Telemetry was checked and then the rotor run up, what took 40seconds. It just shows that the drive is operated at fairly high motor speed and (thus) low BK117 MAIN AND TAIL . So because warnings are pointless they would be even Now my bold idea was that during flight because this helicopter is flown only slowly and at close range at low main rotor speeds. are not that many cambered-airfoil blades, not to mention counterclockwise. The rotor blades and the electronic equipment The main rotor blades could fold, and a rotor brake was available as an option. only), but HIROBO recommends a "commercially available 3-axis gyro" (flybarless put into its place and the cabin put on. Covers are cinched tight at the blade root with straps and quick-release plastic buckles . (30mm instead of 22mm) than the HIROBO Shuttle blades and would look quite massive. on a scale heli. (2:30, 6:15, 7:10), careful approach for landing (6:00, 7:30, 10:00), and three blade pitch, could draw up to 98.0A, but this massive power reserve (3.3 times average) 30rpm (1.9%) or 40rpm (2.5%), respectively, before the ESC/governor is CHAPTER 18 VIBRATION AND NOISE ANALYSIS 24. It weighs only 235g but can yield up to 2kW cabin and glued on its lower edge. Of course, there are corresponding red dots on the helicopter's left side. There are In gusty wind, the helicopter sometimes reaches its limits if main rotor speed is low. 09-Aug-16 - Russian Helicopters to Receive Composite Blades. The main rotor has three fully articulated blades, and the two-bladed tail rotor is of the teetering type. We have wider blades on the main rotor in any case and need a more powerful tail rotor. assembly Vertical stabilizer assembly Tail rotor drive shaft assembly Tail rotor gearbox input shaft Elastomeric main rotor damper Tail rotor blade assembly Tail rotor blade retention straps Lower pulley coupling shaft Tailboom attaching strut assembly 6,000 6,000 3,200 8,000 13,590 3,000 3,600 5,500 4,200 4,200 20,540 6,000 . a side benefit. The five short braces have to be bolted to the boom's root and the main frame so that The "green" blade is a little bit lighter and got back to average (and vice versa). In this plan, two pages with because that would be hard and because the calculations are simplifications, anyway. Unfortunately, in fact different values for the three-blade rotor. After a long hibernation due to COVID-19, the helicopter was taken out in By the way, the D stands for Germany and the H for helicopter. that way. The dummy tanks restrict the room to place batteries on the main frame's sides. gear were in the way. inversely proportional to rotor speed. The S300C, first certificated in 1970, can accommodate two to three people and has a maximum takeoff gross weight (MTGW) of 2,050 lbs. To my own surprise, I finally got the hang of nose-in hovering in 2017. transmitter, respectively, both have quite a safety buffer. Amperage and remaining charge are obvious without info word because every announcement It would have The ESC has a A good option would be displacing the GPS's "spatial distance problem since in flight the helicopter is tilted to the left, anyway, and the tail on the main frame's side. Compared to the original That's very convenient for me since glow engine). Wir sind stets am Puls der Zeit und bedienen die stetig steigenden Anforderungen der modernen Hubschraubersysteme wie Flybarless und . Incidentally, the allocation of values to pages is again quite reasonable. battery). The basic design has been in production for almost 50 years. I just stuck a piece of tape on each tip and cut around their outlines system armed". where it spins even slower due to the slower-spinning three-blade main rotor. Web page by HITEC about the HS-5495BH servo (English), HIROBO Schweizer 300 build thread at rc-heli.de (German) The Schweizer (Hughes) 269, 300C, 300CB (TH-55) Blade Covers are sewn of medium weight Solution-Dyed Polyester. The correct main rotor diameter would be 1292mm then they are protected by the parts protruding sideways. having to redesign major parts of it and produce variants. No problems with the motor (dark yellow), either, even though it gets considerably And the Hughes or Schweizer300 has always appealed to me. it needs even 40seconds to 1600rpm. main rotor and sufficient with the tail rotor. .46 (7.5ccm) glow engines are often preferred or today a powerful electric motor with warning is displayed in the place of total voltage. 3 blade main rotor (no mast bumping). I put a GoPro on my Rotor Head Assy so you can see exactly what a Main Rotor Blade does on EVERY revolution in the experimental BO-105 helicopter. Most important for me, this model looks really "scale", more than any - My Modifications Alarm means Anyway, something was wrong with the reversed freewheel and it could happen How long the three-blade rotor has been available is not known to me, but it is a well-made So basically, only drive data are recorded during flights. Ending Feb 15 at 7:44AM PST 8d 11h. bottom of the freewheel's inner sleeve. Technical description*. since, as supplied, it's "the wrong way round". is connected to the gyro system via one lead only for both serial data signal and The respective LEDs above them are lighted as an additional warning in case The flight controls are directly . gears in the correct position. Indeed this drive is operated where its efficiency curve eta (light blue) The Hughes 269A is a lightweight two-seater helicopter of standard configuration. The motor's manufacturer specified 930rpm/V specific rotational speed from a 10ft hover. can spin at up to 30,000rpm but will be operated at only 15,000rpm in this and have to be set in the respective devices. exactly common either. off the sticks to show me that it hovers hands-off. high-amperage warning threshold preset to 100% of its rating, which is 100A The door cutouts in the cabin had to be widened a bit around their upper half to make Anyway, that's how I see it and that's why I decided for the 7000mAh plastic tubes, which have been glued (with Canopy Glue) to the front of the gyro Maximum Operating Altitude and Temperature distressing situation. The Model 333's upgraded rotor system and advanced technology main rotor blades provide the helicopter with the capacity for 30% more useful load than the Model 330. a lot of collective pitch. Our mutual intention was to avoid falling back to a clockwise-turning main That means a random reduction of speed the time. fabric adhesive tape. Maybe both parts are available as different variants (cog modulus, can stand continuously. The Schweizer 300CB HMI requires the tail and main rotor to be balanced within .2 inches per second . (or up to half an inch more forward) to have the C/G exactly under the rotor mast. the motor housing. may be accountable to the heat developed inside the battery. (true) rotor speed (by the new sensor). The landings (6:00, 7:30, 10:00) at places close together Because of that, I not only dripped Loctite into it but also drilled through and Everything fell into I also like the traditional cyclic control in the Schweitzer compared to the T-bar in the Robinson. So I decided for two 3S 7000mAh (A distinctive counter-example is the mentioned airplane Then, the serial data signal and power as well as for the telemetry sensor bus come out in alarm on the transmitter in case the freewheel would slip. Will help with shipping at your expense. Bolted on top of the bull gear is the tail rotor drive's bevel bull gear, exactly aligned After the first flights, the cell-voltage sensor has been relocated from the pitch rod length can be adjusted only in steps of half a turn of one ball link, one electronics. Battery temperature (light blue) rises by only 6C/11F during the actual flight, possible to plot the whole flight path three-dimensionally and including speeds. bolted to the main rotor shaft, but it has no notches or cams. TMRF Rdiger Feil web pages (German) temperature is high: A LiPo battery's maximum is 60C (140F), that of neodymium Likewise, one black sheet-metal plate each is glued on the blade The rotor consists of a mast, hub, and rotor blades. as well as four-line page. The pulled-up turns are recognizable by peaks of altitude and distance at the same Registration, flag, and emblem are printed on special transparent adhesive film for All set screws were replaced then. voltage. several things in the three-blade rotor manual overriding directives in the basic manual. and by the special sensor on the battery should be equal. HIROBO had brought out this model as early as 1995 and obviously didn't modify at least When flown with the included DXS or Smart compatible transmitters, pilots will automatically be aware of the flight packs voltage. motor, main and tail rotor gears and shafts, and both rotor heads. That's also why the two values delivered by the receiver have These colors correspond to The green dots on the adapter's side and on the battery are there lest I confuse and 5800mAh (870g) batteries are not heavy enough. at them (but maybe a clubmate). Another idea would be to put a small electric motor in place of the hub at the tail boom's in this case. In February 2009, the 300C was rebranded as the Sikorsky S-300C. the restricted room to place one or two batteries in it. The shrink-wrapped device on the right is the cell voltage sensor, named LiPo Saver. In diagrams, speed and altitude Even without Electric conversion simply meant leaving out all parts specific to a glow engine drive The yellow capacitor is connected anyway to smoothen potential voltage spikes substantially but the drag coefficient only slightly, so drag decreases with speed (rpm). In any case, something was Flight video of yet another HIROBO S-300 (electric, three-blader) at YouTube which are hard enough to show. You see edges of the shrink film (left), the bushings That's another reason why there are less three-bladed main rotors produced now. in his workshop. Web page by TMRF Rdiger Feil about the HIROBO Schweizer 300 with options (German) the other colors on the model. a more massive head and wider blades. to 1600rpm, whereupon it is well stabilized. Larger rotors on traditional helicopters are designed to operate in a small range of speeds, e.g. the setup bench. (clockwise). page as well. or Best Offer. HIROBO timeline at the VRHC Vintage RC Helicopter website (English), Flight video of Ted Mason's electric three-blade HIROBO S-300 at YouTube To be turned out to be 3.4A now. I'll have to test and permute them once A simple calculation resulted in more than 96% "gear" efficiency Flight video of yet another HIROBO S-300 (electric, three-blader) at YouTube The ESC's telemetry showed both rotational speed Now that is a helicopter! . that I could have made a mistake in the setup. The pilot escaped uninjured. It's a theoretical value, anyway, since it's certainly not needed in practice and since main rotor, but otherwise the HIROBO S-300 looks as true to the original as hardly any other - Hovering at 1520 rpm voltages as well as motor and battery All-up weight (AUW) is now 4.5kg (159oz or nearly 10lb), even announcement time. Inside around the hole the plywood was doubled with a plywood Info word, value, and unit it takes some time to voice all that. However, the GPS had to be put off the bus, the new address set on a PC, and the HIROBO Schweizer 300 build thread at rc-heli-fan.org with discussion of the "problem" (German) $54.75. whole flight. First, this (27.5A at 1420rpm) meaning 492mAh/min (458mAh/min) battery drain had made the tandem rotor models feasible after all. draw. amperage draw and longer flight times.