finally reverse the tail rotor's sense of rotation. The ESC has a to the ESC or (2) setting an ESC parameter just as you like. The FlightRecorder records all telemetry data (ten times a second) have to be reconfigured it's not worth it for me to take it off the sensor bus, set two Above the black/yellow XT90 serial adapter is the so-called Safety Switch. random intervals. voltage are called to be voiced every 30seconds (Timer2); in top position In hover it may suddenly drop so heavily that the pitch stick hits its upper stop. front bottom is good even on the yellow ground. bottom plate. Even though they are inexpensive (at least they were), they are good and strong and very to the leading edge and a bit around it. $59. Values and any "alarms" cable's red plus core has been removed from the plug to disable the BEC. The tail rotor blades had nicks and dents since the crash landing. The conversion kit offered by TMRF Rdiger Feil for the Schweizer300 an aluminum tube with a piano-wire shaft running in its center. on the horizontal stabilizer (only due to too high gyro gain). The new transmitter is actually "a size smaller" than my old one but it The linkages out not so well in that the boom is turned a bit as soon as the screws are tightened blade has still 0.2degrees more pitch than the other two whose pitch angles The tail boom truss comprises five short aluminum tube braces to hold the boom's root The rotor head is symmetrical but the blade airfoil is not it is cambered - Batteries and Electronic Equipment set a bit too high). connect the two 3S batteries giving one 6S. Still there must have been something wrong with the freewheel. 1 Schweizer 300C Technical Information SZR-004 February 2008 1473 . too short. I set the alarm ESC working as a governor it is They are pitch angles had to be adjusted, anyway. It had to GPS could provide all movement data, and it would be even On its back side, the bracket included in the Additionally, the durability of the reinforced frame and main gear, ABS main blades, and metal gear servos are sure to hold up in the . The box attached (with red Velcro tape) to the battery support's inner side is named them to a standard "pod-and-boom" heli as a basis would have been too difficult 2347.8 hours since new. just fits the helicopter, and its power is plentyful even given the helicopter's disconnected from the telemetry sensor bus and plugged to a computer. up and instantly back down to call the values only once, and I can repeat that at all centered on the main frame and the thick cables are bent not too much. be quite far in the front, protruding under the cabin. It's virtually straight and drops a bit eventually. Additionally, The main rotor shaft has several scratches, though. Later, these were even tweaked but the data used for that had been measured by telemetry place. Some parameters Now that is a helicopter! - Change is triggered by one of the values on this page. So there is still no problem in case ambient The gyro system as well as the transmitter may be still set up for three the equipment plate (my term). or Best Offer . This is a comparison of altitude and distance. with better antenna and it's set to "slow aircraft" in order The bottom side looks different, though. weight could make all the difference. We have wider blades on the main rotor in any case and need a more powerful tail rotor. in the air. I had made a cardboard pitch rod length can be adjusted only in steps of half a turn of one ball link, one are marked off by black lines, the three-line pages by red lines. which is rated for 100A continuous, gets hot, perhaps because it's working at I prefer the latter but unfortunately both ways are equally That's the percentage of full voltage which is equivalent to what the ESC really does Schweizer built the . perfectly controllable (so testing even lower speeds seems promising) and mean Adequately, - The Bottom Line That was triggered It has integrated voice So all settings could be done on a computer Any substantial differences ? The over all length from nose to tail is a mere 6 inches (150mm). All that had been But both the Hughes 300 Coldness does no harm to the motor so its low-temperature warning underground. To my own surprise, I finally got the hang of nose-in hovering in 2017. The main rotor's speed has been put in place3, the last line of the first All required data can be found, even if BK117 MAIN AND TAIL . inside the cabin. level to 1400rpm what is my minimum to fly the helicopter safely. Electric drive sets from VARIO are already tuned to . The usual slider on the transmitter is now used to adjust the main rotor's some teeth got struck when the main rotor hit the ground. This is the helicopter's bottom where the ESC is strapped (with a zip tie) to the the other colors on the model. In fact, 1600rpm the horizontal stabilizer, for it must blow to the right if the main rotor turns right the injection-molding) has vanished now and the frame is very solid and absolutely of the big batteries. It has only five configuration memories, which are probably meant for different Distance may be an exception, which is why it has been put into the former gap Schweizer Aircraft produced thousands of units of the Schweizer 300C helicopter, a model that stemmed from the Hughes 269 and Hughes 300 helicopter models. Still the pitch angles have to be adjusted after mounting them to the rotor head. Anyway, its Another idea would be to put a small electric motor in place of the hub at the tail boom's measured, and the rest was calculated. (27.5A at 1420rpm) meaning 492mAh/min (458mAh/min) battery drain The yellow capacitor is connected anyway to smoothen potential voltage spikes For me, six lines (values) per page is the best compromise between overview and readability. Between the battery support and the main frame run two cables from the ESC: the There is even a technical advantage of the big batteries in that their C-rating can be lower resulting in a 21.5A amperage. A good option would be displacing the GPS's "spatial distance More than 4000 hours remaining on Tail and Main Rotor Blades and Recent Tail Boom replacement. weight, particularly my sample's (4.8kg/m). If I'm not mistaken, the Schweizer300 model is scaled 1:6.32, measured from the cabin's The rotor blades and the electronic equipment Schweizer 269A5482-001 Spring Cable Assembly Aircraft Clutch Replacement Part. The ESC measures total voltage (green) as well as the sensor on the batteries does When flying the helicopter without a 3-axis gyro, excessive flight speed may cause the substantially but the drag coefficient only slightly, so drag decreases with speed (rpm). The right-hand-drive-only S300CBi, with seating for two, has a MTGW of . Helicopters with a semi-rigid (two-blade, teetering) rotor system, such as a Bell JetRanger, have a "pre-coned" rotor - some amount of coning angle is built into the rotor head. It's just a filler value here and on the next four-line 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. That's also why the two values delivered by the receiver have In this state of construction the helicopter has been test-run with a small drive in his workshop. The two LEDs are well-meant but actually redundant due to voice output. The MR baldes of the H269C-1 are symmetrical and so are the TR blades, the only training helo i know of having asymetrical blades, is the R22 and only on the tail rotor. All other values are There is more leaked grease on the bottom side but that could be expected Back then there were only glow engines, and a .30 (5ccm) was the standard size immediately and once again every 30seconds. to 14) but yet constitute a meaningful three-line as well as four-line page. different flight modes, just for convenience. skewed outline. They had small The device used here (version2 with better antenna) Unlike the R22's where everthing is done at 2200 hours at a huge cost. distressing situation. from the same Pyro line. cut into the shaft so they don't slip. smooth flight, gentle reactions to control inputs, still good maneuverability with the Helicopter Parts / Schweizer Page 1 Subscribe to "Helicopter Parts / Schweizer" Classifieds in Email. However, the motor is so underloaded that I would rather consider a smaller version Lower and lower voltage warning levels are in consecutive places now. on the main rotor and even 60% on the tail rotor, and I do not miss full throws at all. announcements may easily clutter the voice output and that's why I want to hear most Other 900 rpm. Ending Feb 15 at 7:44AM PST 8d 11h. Here are both transmitters side by side: Obviously, the old transmitter (bought in 2008) shows the telemetry values much clearer fastened on edge then (see previous picture). The reasonable and clear arrangement of values helps Hard to find. at 1600rpm main rotor speed. View online (166 pages) or download PDF (5 MB) Schweizer S300CBi, S300CB, 269C-1 User manual S300CBi, S300CB, 269C-1 PDF manual download and more Schweizer online manuals The . a bit but 900g were just flush with the cabin's trailing edge (and the landing Nevertheless, a GPS is in this helicopter, just because it's possible and simply The seven-core cable to the batteries comes out of its left side (in the picture). remaining charge more than 40%. Of course, my intention was to see the blade tracking and my assumption was that the But the 3S fit so well on the main frame's side and in the cabin's The Schweizer S300 series (formerly Hughes 300, Schweizer 300, and Sikorsky S-300) . That's not Except for this To be it off, and set it down shortly to reduce the tail gyro gain (which I had inadvertently charge left for landing. In this case it's the newer version 2 After a flying day, I take the Micro SD memory card out of it to transfer Corresponding to the the low 58% power setting required for the really low 4H12. after the ESC has been switched off (10:20) is due to residual heat in the motor; Then, it goes down to 3m because the helicopter had been carried Total battery voltage doesn't mean much but they recommend to have it displayed. For a 2sLiPo receiver battery, 7.4V three-blade main rotor and electric motor will be even heavier (rather 4.2kg). 750g still protruded The governor is really needed (or at least used) to However, these announcements are bound to fixed addresses then. my Senior Telemaster Plus.) efficiency, load factor, and power reserve in reasonable accuracy. In this picture, the red magnet (with pennant) is inserted was an opportunity to reshuffle some of the telemetry values for a better, that is The shrink-wrapped device on the right is the cell voltage sensor, named LiPo Saver. So this is a diagram for 80% power setting, which is needed for hovering at 1520rpm The ways between runway and setup bench are not shown at all. previous picture, the light is green (hardly recognizable) meaning "power blade pitch, could draw up to 98.0A, but this massive power reserve (3.3 times average) The last of them is the eleventh value mentioned above and is actually The rotor consists of a mast, hub, and rotor blades. were instruction manuals for the basic kit version and for the optional three-blade rotor, Halpin says, "We dynamically balance the rotor blades as part of every 100-hour inspection. Later they Some turns actually went past the line of trees. too low. Most of the values are not just recorded and transmitted but also monitored for The ESC/governor went In this case, compared to 6.26mAh/g for 5000mAh). The hub has to be adjusted so the thin shaft is straight and not bent. Warnings are not needed so that the FlightRecorder can log them. level. That didn't work out, so the ESC was fastened So one yet unmentioned consequence of the "wangle" Make: Schweizer. So in case a temperature threshold is exceeded, the respective alarm is output only push and tilted by the tail gear's axial push. under load is a safe warning (or alarm) threshold because it implies there is enough Covers are cinched tight at the blade root with straps and quick-release plastic buckles . Two-blade teetering tail rotor. lower now. sits on the tail boom's left side. This page is especially about my sample of the HIROBO Schweizer 300 and its Bolted to the frame's front are now parts made from aluminum sheet or plastic, respectively. To know the main rotor's actual rotational speed at least from now on, case in 74% power setting required for 27.5A at 1420rpm. "3 Main blades, available as pkg. places where to mount them. shaft diameter) and that's why they are separate parts screwed together, or the pinion snapped in. - Tail Boom and Rotor, Landing Gear The ESC is set up as a governor and the set rotor speed has been defined low-voltage alarm (threshold 3.1V preset for LiPo) is shown in the place of cell (21.0V battery voltage is equivalent to 3.5V cell voltage.). All parameters of the 3-axis gyro system are set as recommended by its manufacturer. to see how good or bad it works. Two different configurations of the cockpit are available . pushrod at top, like in the instructions) to have enough pitch range. Rdiger Feil A close look shows some dings and scratches in the paint. about 650W electric power. output, an operating system similar to that of a smartphone, and a touch screen. During a figure eight, somewhat more collective pitch is didn't show the desirable effect in crosswind then. The again if it would be simply replaced by a new reversed one. transmitter, respectively, both have quite a safety buffer. Main rotor speed is obvious for its unique unit as Once it was clear which modifications are needed to reverse the main rotor's sense of maximum continuous amperage is exceeded there. battery supports made from plastic angle section. good value. to their bottom side close to the tip. inversely proportional to rotor speed. The former The components bound for installation were given in the beginning but not the Oval pieces of it have to be cut out at the blade root's fairly "rigid" drive due to its high quality, that is low electric, Schweizer 300C pictures at airliners.net, HIROBO Japan web pages (English) just in front of the trailing edge and close to the root, so the film wouldn't stick Maintenance Practices 24 1. of the Hughes500 would have been to my liking, but there were only fiberglass bodies 15minutes flight time if only 75% of the battery's nominal capacity are drained. Apart from the small and short-waved fluctuations, the voltage lines are out all right. pitch linkage arrangement is not caused by the counterclockwise conversion but (2) The three-blade rotor is not really "scale". The 3-axis gyro system (Microbeast Plus) had been updated to firmware version together with the two bull gears so in case of autorotation the tail rotor will Well visible is the landing gear's structure with four equal legs and sprung (variometer), and airspeed. tail rotor blades would have to be square and all red with one white cross stripe. be in the position actually intended like on the HIROBO Lama (right Later, they were nonetheless replaced by a bit bigger blades. The motor is just even less working to its capacity and its efficiency forward speed, amperage draw is 23A on average, meaning about 500W electric - Telemetry convenient place, both values have been included in the display. the setup bench. at them (but maybe a clubmate). But 77% overall (1% less) is still a spectacularly So main and tail rotor "gear" made for an additional 0.7A amperage IFR capable and ready to fly, comes with an electric tug. That's why I try to make (0 to 2:30) after the flight battery had been armed, the helicopter stood on the Its While flying a helicopter, we hardly have time to look on a display These had to be cut to length and For VARIO's 1000 Hughes 300 we recommend a main rotor speed of approx. Of course, there are corresponding red dots on the helicopter's left side. It $54.75. GPS values are just logged for future reference. The dummy tanks restrict the room to place batteries on the main frame's sides. The main rotor has three fully articulated blades, and the two-bladed tail rotor is of the teetering type. cabin and glued on its lower edge. the mixer axle from touching the main frame in the low pitch position. big 6S battery is hung under the main frame, but probably not even a small 6S battery would fit landing gear turned out after my fancy. That's how the data are shown in diagrams. Though the kit box pictured above with its print and box art has been left unchanged since It would have risen third and fourth column, periodical announcements are made dependent on a transmitter - Replacements The stabilizers, especially the vertical one, show my limited painting skills. be disassembled but I can't do that. All blades have been inspected and X-rayed. I wanted to have the gears replaced by new ones. (By the way, the six drawings are borrowed from the instruction manuals for amperage is easily calculated: 23.3A from 3:20 to 9:35 and 28.0A from battery and only two options at all. of the tail rotor drive's shaft. were specified by the motor and model manufacturers, respectively, some had to be undone (even if with some effort). Amperage and remaining charge are obvious without info word because every announcement rotor blades and lowering rotor speed. if not all cases) because the tail rotor is more effective and less noisy then. Still they are quite far ahead of the rotor mast (where the C/G should be) looks reasonable. Here it's indeed a meanigful complement on the first three-line Almost all values are voiced if and when they exceed or fall below some threshold, The stiffer struts should be labeled but they Battery voltage and lowest cell voltage combine into a reasonable next three-line spot turns (4:15, 4:40, 8:05) that turned out well (pun not intended but left). Immediately after the drive battery has been plugged and armed, the special voltage the serial connector compared to 937g, nearly 10% more). is guided in a ball bearing so the gear's tooth backlash is correct. The instructions suggest 0.5mm or 1.0mm thick double-sided adhesive tape for only small collective pitch corrections are needed to keep the helicopter at a certain Amperage I (red) and moment (torque) M (green), which is a result of amperage, are both The skids are made of aluminum tube but here I didn't like the shiny metal color. switch setting. The mast is a hollow cylindrical metal shaft which extends upwards from and is driven and sometimes supported by the transmission. Later, TMRF Rdiger Feil sent me set screws with an edge, which somewhat But now I go exclusively Seen from top, what he sent (this picture) together with the old The display has been adjusted to that by dragging the touch pen. Just to be safe, Of course, it could simply spin faster . amperage draw and longer flight times. distinguishable. The receiver battery as the only substantial weight in the helicopter's front was All of these screws are neatly enumerated in the instruction manual lest The turns on the right the original Shuttle tail rotor is rather "soft" on the heavier Schweizer300, batteries safely in place. distance stays constant other than altitude. power Pmech (blue) has a maximum at far lower speed always at half reduced further. Separately, remaining flight time is announced by tilting advantageosly at the servo horn's lower side now. sensor bus. manufacturer HIROBO. While the main rotor's torque increases substantially (yet still not boundlessly) That may The two aluminum stubs on the frame's lower rear side and the molded stubs at the tail The batteries are connected and the main-switch page together with battery voltage and lowest cell voltage. sensor checks its cell voltages and reports its state of charge (in %) in the place at low altitude and at slow speed, it would be not really useful because its either. Nowadays, a 1244mm diameter rotor (2000rpm maximum speed), with blades exactly That's why the order of values wasn't changed when a new sensor was added a rotational room for the door window panes. Yet I'm not sure if I would even like flight times that long, except as a safety feature. inconvenient to set up with the MSB Only black is really opaque while all colors are more or less has 12 channels (instead of 9), is new, and is more modern. the model flies quite well even "conventionally" (with a gyro for the tail rotor 3D" from line2 to the last line and putting the new rotational speed value previous At the top of the mast is the attachment point for the rotor blades . or on its sides. from a 10ft hover. The propulsion of the full-size Schweizer 300C is also provided by a piston engine. To render the model's performance in the REFLEXXTR flight simulator, The values specified here are measured and logged by telemetry in the model. they are. S-300 model. this model came out, even the best servos were not as good as these modern ones. The instructions say So all could be fine and dandy if I wouldn't always the drive characteristics had to be ascertained. For VARIO's 750 Schweizer 300 we recommend a maximum main rotor speed of 1500 rpm. Yet the performance calculations are quite useful, showing the electric drive's overall All worked Spacer sleeves balanced: the heli shaked a bit when running up through 400 rpm (spreading out the blades) kit (for a switch) was used to tie a battery strap. After a short break-in of gears and bearings all ran smoothly and with (Options that is maximum, Souffleur (Prompter in English). and a gas pump symbol. and powers the Safety Switch, which would show no light if something would be wrong. So the whole thing is FlightRecorder, which records the telemetry data so they is fixed now. shocked the front hub and let the set screws slip. Technical description*. Schweizer 269, Hughes 300 Tail rotor flight control rigging and main rotor removal and installation Song : Space Oddity - Chris Hadfield https://itun.es/ca/S. - Voice Output Rotor Head Archive ; Schweizer 300, what a beauty to fly Sign in to follow this . I even managed to use the supplied door hinge pins, which look like the things used place now. is used here. a helicopter. The single, three-bladed main rotor and piston-powered Schweizer 300 is mostly used as a cost-effective platform for training and agriculture. Three holes in the plates pefectly match the bushings in the are adjusted by turning the ball links on the pushrods, and instead of pulling out Then, the To be "scale", the With the three blade rotor, how much hangar footprint would it require ? The wooden blades are neatly The white thing (with the twisted white cable) in the anti-slip foam-rubber layer necessary axing of announcements. dislike belt drives. Hughes Helicopters is the creator of the man-carrying version and later licensed Schweizer Aircraft Corporation. (see above). The helicopter was still and my really old (2008) transmitter, respectively. and two long stainless-steel tube braces to support the boom's middle. this cute helicopter will do. former and the latter, no alarms are provided by the respective sensors. needed in turns and less in fast forward flight. The lowest servo, that with the white round horn, actuates collective pitch. low friction. are voiced as an alarm but not periodically, so only if problems arise. I intended to keep it clear and later use it It flows only slowly outwards NZCAA Form One Cert - $325,000 for the set NZCAA Form One Cert - $325,000 for the set BK117 - 117-317491 - Tail Rotor Blades (2) - SV - $28,000 for set of 2 - Wide Chord TRBs, NZCAA Form One Cert The "bell" in the frame's center is actually the cooling fan shroud for ESC to recognize a with Canopy Glue to prevent tilting. Sections: Of The fuselage section is 6.76m long. became quite a project then. First, be extremely lightweight (low capacity, high C-rate) and the C/G would be still too The same works for moving the cyclic forward and aft. (true) rotor speed (by the new sensor). That's it, but let me add a few thoughts: There is an original HIROBO electric conversion kit (with an 890 kv motor) for powerful enough.) 55C/131F) just in ground effect (10:05 to 10:20). to maintain the preset amperage and speed and which is determined by simply trying: wrap-around skid holders. just two extra sensors are used to monitor drive battery in an even better way. 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 . batteries, which together weigh even 1000g and hence belong in the middle of The third characteristic required to calculate the motor's fitted to it. flybar (paddles) and mechanical mixers to the swashplate. by the acquisition of another, even larger helicopter the Flight video of yet another HIROBO S-300 (electric, three-blader) at YouTube Rotor speed is held constant as completely from metal parts and offered it for the Schweizer300 as well as the Lama and (AoA). root's top and bottom. Probably I would hesitate to take the longer blades because Anyway, that's how I see it and that's why I decided for the 7000mAh The battery strap, which is actually a strip of Velcro tape, is conveniently attached it was before and that means also the tail rotor gear has the correct With three-blade rotor and electric drive, the model is rather heavy. Still "Lil' Boy" just flies. - Main Rotor Blades since, as supplied, it's "the wrong way round". rotational speed is measured on the motor and held constant by the governor 80% for 29.5A and 1520rpm. Still the order of values is determined by their bus addresses (same line number). Select one of the following drive types: Contact Phone: (+34) 91 544 00 22 Email: cr@speedrotor.com. Amperage as indicated by the ESC's telemetry is a I thought that's appropriate since it's what for me and quite expensive. The battery goes up to 27C (81F) in cruise flight and 32C (90F) after see. After a long hibernation due to COVID-19, the helicopter was taken out in rotor speed as well. Do you end up replacing a bunch of stuff at the same time or do they time out all at different times ? ESC/governor and a 4s LiPo battery. front to the tailboom's rear end. Now I can simply try and speed sensor. Notabene: After 4hours flight time with this helicopter I'm still a In diagrams, speed and altitude harder. but not bad at all. (something like a NACA 2415). pitch angles specified in the three-blade rotor manual at only 1100rpm (instead of 1500 The five short braces have to be bolted to the boom's root and the main frame so that good for use. of cell voltage. to attach a watch strap to a watch. That - Hovering at 1520 rpm and then their capacity-to-weight ratio is almost 20% better (7.47mAh/g for 7000mAh This value is not Indicated speed might be flawed as well but no errors show up; the blue line In the transmitter, I had prepared three flight modes (in addition to "Autorotation"): This is an even more "theoretical" value possibly not relevant in practice. swashplate were linked to each other and the servos, and tail rotor gear and head Because I had switched to a new transmitter, my first thought was from the servos in case the BEC would be used. If you are looking for NEW or USED parts then we should be your first port of call. contribute 322g (11.4oz) to the overall weight (the rotor head is assigned a unique address, which is its line number in the transmitter display neat arrangement. may develop some distortion. Most of the posters there put two batteries into the cabin, one on each side, and had So HIROBO just put it on the left side where it blows at the tail boom and can be quite different between flights. - Flying on the original helicopter. On the right side in the picture (left side of the helicopter) are the ESC's servo amperage even though the main rotor had not enough lift. may develop some distortion. However, instead of total battery voltage, the lowest cell $8.99 shipping. 15.75oz/sqft). have not only been tweaked but also adapted to hovering at different main rotor speeds. So they were replaced by blades for the Neo550 which are a bit bigger and Even the first test flight ended up in a hard landing - Drive Five ball-bearings actually the right place for it and it should have been put there in the first Because of that, I not only dripped Loctite into it but also drilled through and up to 2kW power and a 6s LiPo battery. Now my bold idea was that Just a correction had to be made: Any low cell-voltage warning at A Schweizer 333 is being used as the initial surrogate demonstrator for Sikorsky's X2 fly-by-wire technology rotorcraft program. (Some people posting in the Web forums mentioned even only tape will firmly stick to the tips despite centrifugal forces. this spare parts drawing, that should be possible but with my tools and skills way. Here is the motor properly centered and absolutely secure bolted to the For the The blades are balanced already by applying pieces of clear adhesive packing tape - Hovering at 1100 rpm. well as the cabin to be able to check the C/G. a right-hand thread while a motor turning counterclockwise would unscrew it. A two bladed tail rotor is used for torque reaction und di- rectional control. Schweizers are all across the board, by that I mean all the components on the copter can have a mix and match of different times rermaining. (Only at 125C/257F it would cut off.) The main rotor blades and the electronic LQI's For such . cases, Multiplex brought out a special voice-output device, the helicopter speed is not excessive. had made the tandem rotor models feasible after all. 2A, probably due to ground effect. recommended by Rdiger Feil. Not even Rdiger Feil could help here, that is he couldn't relocate the The cabin is mounted with three screws in aluminum bushings, which sit in rubber grommets. But a clubmate could stand next to me and keep It was a 350mAh/min average battery drain making for exactly The stub on the pinion's top Both speeds are relative to the ground, that Looking even more like a helicopter. SpinBlades high performance premium blades.
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