Posted by Qwinout | Today @ 01:05 AM | 617 Views
RADIOMASTER TX16S Hall Sensor Gimbals 2.4G 16CH Multi-protocol RF System OpenTX Radio Transmitter for RC Drone Helicopter Toys

Note: Basic version is not hall gimbal , it's Potentiometer Gimbal.

Preordered product, it is expected to be shipped in Beginning of May.

It need to use with18650 battery, Please search it on my shop or contact us to add it.

Brand Name: RadioMaster
Item Name: TX16S Transmitter
Channel: 16CH
Mode: Mode2
Size: 183*212*66 mm
Weight: 736g (without battery)
Voltage: DC7-8.4V
Battery Compartment: 25*52*97mm
2 x18650 (tray included) , 21700 7.4v 2s Pack or 7.4v 2s Lipoly (Batteries not included)
Current: 400mah (excluding external module)
External Micro SD slot: Card Included
2 x External UART Expansion Ports
Touch Panel Ready (requires OpenTX 2.4 and Upgrade Panel Sold seperatly)
Industrial grade 4.3 inch 480*272 outdoor readable color screen
Compatible with OpenTX
Wheel menu button
Full Size High Quality HALL sensor gimbals with CNC Aluminum Facias (Optional)
Internal Multi-protocol RF System
Full Speed Native TBS Crossfire support (400K) (Optional)
Supports Telemetry (Protocol and Receiver dependent)
Memory 16M (can be expanded by Micro SD card)
Voice function
Vibration reminder function
Improved JR module slot
6-Flight Mode Buttons (Pixhawk and more!)
Three-color LED status display
USB-C Charging port.
USB-...Continue Reading
Posted by FeiJi | Yesterday @ 09:27 PM | 1,094 Views
Here is a free pdf ebook on how to make a self balancing vehicle. Contains details on my models, problems, resolutions, suggestions, etc.

What I have discovered with my current vehicle model:

1. Vehicle makes right turns very sharply without falling over (gyroscope rotor is spinning to the left at about 10000 rpm) but falls on sharp turns to the left. It also falls making backward right-hand turns but not backward left turns.
2. Programming requires taking into account the natural precession of the rotor and corrections must take into account which of four sectors the rotor axis is in. This is forced precession as you cannot just place the gyroscope rotor at the balance point - that will not work. It is like you have to coax the rotor into a balanced position.
3. Corrections to the gyroscope gimbal must be programmatically made in short (approximately 50 millisecond) spurts with a slight delay following to allow the gyroscope to naturally precess to a balanced point.
4. Balancing requires a gyroscope rotor of mass/total vehicle weight of anywhere from 15 to 20%. Some seem to have been successful at 8% but I think that must be because it is a full-sized vehicle and probably more efficient than at the model level. Not sure.

How can we make sharp left turns (gyro spinning to the left) without falling over and only using a single gyroscope (two gyroscopes solves this problem but has other issues). One possible solution that I have yet to try is to put the gyroscope on a 2nd gimbal and turn it when the vehicle turns (like the Gyro-X car).
Posted by jmxp69 | Yesterday @ 08:37 PM | 1,159 Views
Here is the first look at the FMS Pilatus PC-21
FMS PC-21 Pilatus RC Plane First Look (12 min 38 sec)

Posted by Javerb00 | Yesterday @ 04:16 PM | 1,857 Views
I picked up a zohd orbit. No booklet. Have a spektrum ar6210 that i bought with it also no booklet. Fella needed money for groceries so purchased bunch his stuff. Anyways. Not sure how wire it up. I know seems basic... So before start playing around with it. Figure ask the pros. Fyi im new too this. I have only ever flown prebuilt planes. Thanks for any help guys. Also all new products. Thanks photos attached
Posted by mark_q | Yesterday @ 12:30 PM | 2,117 Views
Because recent events have kept me sequestered on the computer and in the shop...

Yet another tool to help make things that are accurate and cool like this 80% version of the DWFoamies Juka40

DIY Benchtop CNC Build Article

First video-
DIY Benchtop CNC (3 min 30 sec)

Posted by cmdl | Yesterday @ 11:28 AM | 2,256 Views
Using data from 117 countries, population and IQ have an almost perfect inverse relation as seen in the correlation coefficient.
The rate of population increase is irrelevant, any increase is sufficient.

Regardless of the cause, as long as population continues to increase, IQ will decrease.
Posted by onecrashaway | Yesterday @ 06:47 AM | 2,683 Views
Still awaiting parts. Really nicely built model.
Posted by steve wenban | Yesterday @ 06:06 AM | 2,756 Views
As everyone on the planet knows, its stay at home and stop the spread . And because I work on restoring a PBY Catalina which we have had to stop working on ,I was asked to restore the association model . I decided that it should be restored to a museum standard with a full metal jacket
for display with the full size when we complete it . I just wish it was as easy to work on the full size as it is the model . Photo's posted in no particular order of...Continue Reading
Posted by Blaze0021 | Apr 05, 2020 @ 11:44 PM | 3,343 Views
This is the 3rd and final installment in the Eflite Rare Bear series. The stock 8x8 prop has been swapped out for the more aggressive APC 9x9E prop and has been dynamically balanced, along with the spinner for an ultra fine throttle-up. Bench testing with a fully charged Admiral 4S 3000mAh 35C lipo yielded 68.9 max static amps with 1045 watts power - Great stats and within the "rated parameters" for the stock internals.

Eflite Rare Bear 880mm BNF Basic w/AS3X 4S Flight with APC 9x9E Propeller (4 min 24 sec)

My whole intent for this upgrade was to maximize the performance of the Rare Bear while keeping the AUW (All Up Weight) down as much as possible, for the ease of hand launch, as well as minimizing the amount of weight "momentum" it carries on landing approaches. With my APC 9x9E prop setup, the Rare Bear has significantly increased its power output and speed - hand launches are much easier, it can now clear the diagonal length of the double-wide lacrosse fields we fly at in under 3 seconds (formerly 3.5 seconds with the stock 8x8 prop), and has better slower landing characteristics on approach. All this for a $2.18 prop.. And all within spec.

With that said, I will be clear in saying that I have NO desire to go 5 or 6S - why spend more money on batts that I don't even own, just to increase the weight setup and make it a PITA to land on the field.. all for more speed that I don't even need? For $2.18, the APC 9x9E prop was a perfect choice...Continue Reading
Posted by Cirilo_e | Apr 05, 2020 @ 11:23 PM | 3,317 Views
I'm building a hexacopter but I want to see other people opinions on what motors, escs, flight controller, is recommended because I would like to add a gopro with a gimble so it would help if I can get any suggestions from you people also the frame I have already bought is the Tarot FY690S also have a budget of 650 us dollars thank you all
Posted by jmxp69 | Apr 05, 2020 @ 10:40 PM | 3,339 Views
I made a proof of concept version of this a few days ago. Here is v2 which will work as a long term discharger with details on how to build it.

LiPo Battery Discharger v2 - Build Your Own in about an Hour from Spare Parts (14 min 23 sec)

Posted by old4570 | Apr 05, 2020 @ 10:30 PM | 3,376 Views

Volantex Sports Cub at Sunset (6 min 34 sec)

XK A800 (7 min 34 sec)
...Continue Reading
Posted by Cox PT-19 | Apr 05, 2020 @ 06:59 PM | 3,746 Views
Flying 1/2A Control Liner models in the front yard on a beautiful Spring Day.

The planes are two designs from Walt Musciano; a "Big Otto" and "Golden Hawk", that were kitted by Scientific Models through the 1950's and 60's. Big Otto is powered by a Cox "Black Widow" .049, and the Golden Hawk's engine is a 1950's Cox "Space Bug" .049.

The third is a "Beginner's Ringmaster", and is powered by a Cox "Golden Bee".049.

The little Ringmaster is built from free plans that are available in the files section of the Annual Worldwide Ringmaster Fly-A-Thon FB Page

Front Yard Flying Big Otto, Golden Hawk, and a Beginner's Ringmaster (7 min 54 sec)

Posted by GBLynden | Apr 05, 2020 @ 05:29 PM | 3,968 Views
This is GBLynden's Durafly Ugly Stick V2 Electric Sports Model 1100mm RC Plane Maiden Flight Review In Strong Wind.

GBLynden's Durafly Ugly Stick V2 Electric Sports Model 1100mm RC Plane Maiden Flight Review In Wind (6 min 8 sec)

Review Notes for this RC Airplane from Hobby King:

- It handles wind very well
- Very nice finish on the paint
- The wood prop looks really cool
- Robust landing gear
- Steerable tail wheel
- This is a four-channel plane for a full experience

- The manual was simplified, but left you to your own experience to fill in some of the blanks.
- The battery bay could be better suited for the recommended battery.

Link to Durafly Ugly Stick RC Plane:
Posted by Aksi | Apr 05, 2020 @ 04:37 PM | 3,981 Views
Made that bird for a friend of mine , crashed on its maiden flight due to windy air, repaired and flew it again next day.
But my friend crashed it once again.
Again rebuild the wing and flew it successfully, but again a glitch occoured and down again.
I think i should not rebuild it again,
What are the opinions?
Posted by marbelo | Apr 05, 2020 @ 04:05 PM | 4,119 Views

Back in 2017 I was feeling tired of fighting my old F450 with DJI motors and APM 2.6 flight controller (If you want to read about it, please check my build log: HERE). Eventually I stripped it completely and I got it working pretty nice, but I always wanted to install the gimbal on a new rig. At that time, Diatone was selling a “TBS-like” drone style call “Diatone White Sheep” (DWS). A really nice glass fiber frame, with the characteristic “TBS look” quadcopter at a fraction of the price.

Long story short, I decided to build a new rig using this frame, together with a brand new pixhawk flight controller, Emax 2216 motors and ESC…. which turn it on a completely failure. The pixhawk did not liked the Emax ESC and I never managed to make it work properly. Even more, after changing the ESC I had innumerous problems to get the flight controller working properly. Despite hours of tuning I never got a correct PID that will make my rig fly nice.

I will include some pictures in this post showing the initial setup, but my rig evolved to a much simpler setup than that, please check the following post for a deep review of my current rig!...Continue Reading
Posted by Space Goast | Apr 05, 2020 @ 03:07 PM | 4,274 Views
Spent some time today at the compound just testing and tuning. I have a wide range of airframes covering three flight control firmwares.
  • Strix goblin with custom vectored thrust VTOL pods, running ardupilot
  • Strix nano goblin with ardupilot
  • Volantex Ranger 2000 with ardupilot
  • Chameleon LR 6" frame with iNav
  • Lumenier QAV-R2 5" with betaflight

In the past I've never been happy with the "autotune" of ardupilot. I would typically try it, get some values, and then revert and try manual tuning because it felt sloppy. Today I changed the autotune_level parameter from default of 6 to 8. It warns that 8 is for advanced pilots. I have to say I'm extremely pleased with the tune that resulted. In my opinion this is what the tune should have always done. Worked great on my nano goblin and ranger 2000, which are very different platforms. I'd recommend everyone who has a plane that flies in FBWA to try autotune level 8.

iNav... A couple years ago I posted about my experiences with iNav vs ardupilot. Long story short I had inav on my goblin(non vtol) and after several major crash sessions I swapped to ardupilot and haven't gone back. Since inav started as a betaflight fork I decided to build my new chameleon frame with iNav for RTH and arrow home features. There seems to be a major issue with altitude calculation in inav. In the megathread 747TestPilot did a lot of work trying to get altitude to work. I have spent 8 batteries tuning inav, and am also having serious altitude errors. It will swing hundreds of feet in an instant, usually going negative. I'll do another write up with more details but at this point I'm leaning towards flashing ardupilot to see how stable it behaves.

Quick video with the ranger after autotune level 8. It's so locked in I finally felt comfortable skimming tree tops.
FPV Compound 040520 Ranger 2000 (3 min 45 sec)

Posted by mike140 | Apr 05, 2020 @ 02:05 PM | 4,339 Views
Here is the finished Thermic . Will test fly when rain stops. long flights after shelter in place. I used hs-55 servos , spektrum AR410 receiver and graupner 4N-300 AA battery pack.
I am happy with results I will post more after test flights.
Posted by OHIOM38A1 | Apr 05, 2020 @ 01:54 PM | 4,428 Views
Pics of the J-3 listed For Sale