R/C Blogs - RC Groups
Posted by QuadMcFly | Today @ 05:32 PM | 16 Views
I recently purchased and set up an FrSky X10S, and while I've had very little trouble getting it going, there are a number of questions that have gone unanswered, and documentation and materials for the radio are scattered in many different locations. To prevent me from having to look up all of this every time I need to find something I will compile here the things I have found useful as well as give a place for others to ask technical questions regarding the setup and use of OpenTX on the radio. As I experiment and find out more information about the setup and maintenance of the radio I will post here and I would welcome the experiences of others as well. My application is primarily mini-quad use, so my resources will be primarily focused there, but I welcome input from other types of pilots and areas of the hobby as well.

Helpful Resources:

I will make a few requests of posters here:

1. Keep to the topic, and keep the questions and answers of a technical nature and free of drama and personal attacks or insults. I will delete posts that violate this.
2. Don't be afraid to ask questions! And conversely don't belittle people for asking questions. If you don't like the way someone asked a question, or you think they could have found the answer by searching, just don't reply and move on.
Posted by Black Turbine | Today @ 05:29 PM | 12 Views
so i bet u like quadcoptes so u probably know what brushless motor is i bought racerstar BR0703 brushless outrunner motors and they are tiny only 10 mm wide 1mm shaft and they are horrible i was mounting it and the wire simply fell off at that point i was ready to flip a table so if u wanna see me repair them just follow me into this repairing nightmare i cannot get a good pic on the stator how small it is
Posted by Steve Corbin | Today @ 05:16 PM | 17 Views
Well I've finally come to the realization that I can't get any decent amount of aeromodeling done until I get that mess of a man cave cleaned up and organized. I'm a slob, I admit it, and I hereby resolve to correct this character flaw. I'm getting motivated in one way by using creative visualization. I'm seeing the upstairs loft all clean and with plenty of rack and shelf space to put all those parts of airplanes and gliders that I am having trouble letting go of.

"Hey, don't toss that wing out! I can use that someday!"

Uh huh. Yeah, right, if I haven't used it by now, what makes me think I ever will? I will instead build a nice work table, and get my hot wire tools up and running. I'll have wings the size I want with the airfoils I want. Throwing out these Chinese made wings and stuff will actually free me up to finally having a flying apparatus I can be proud of. Making something that flies well with the old parts is possible, I know, but much more time consuming than starting from scratch will be, I believe.

I wonder if modern tools like laser cutters, 3D printers, and the like are something I should strive for. I get the impression that the guys with good computer skills probably profit from the stuff, but it does seem like there's a lot of pretty pictures being created and not a lot of flying machines being made, and a lot of keyboard time invested. I think I'll stick to the tried and true old school methods, and maybe just get the computer geeks to do that stuff for me. We'll see how it goes.

Sure is a lot more fun writing this than it will be cleaning up the loft, I guess that's why I'm so long-winded.
Posted by bill_delong | Today @ 04:11 PM | 67 Views

Tekno EB410.1 Kit
RCTech Thread


  • Shaft drive (tapered AL for light weight and straightness)
  • Gear differentials (all 3)
  • Low Angle CVAs (with captured pins so no ejecting them!)
  • Durable stub axles with 12mm hexes and optional offset adjustments
  • Reverse bellcrank steering system
  • Quick access bulkheads (for easy diff maintenance and tuning)
  • Split center diff holder (for easy diff maintenance and tuning)
  • 8th scale style motor mount (for easy mesh adjustment)
  • 13mm big bore shocks
  • 3.5mm shock shafts
  • Droop screws
  • Tekno RC is the only company in the industry that will give 50% off of parts if returned to them using the General Warranty return policy found on their website. The parts can be lightly used or completely abused, as long as the part is still being produced it's covered!
  • Plastic shock caps are difficult to install, highly recommend upgrading to aluminum caps
  • No front sway bars included, optional upgrade recommended
  • Turnbuckles and shock standoffs should be upgraded with Lunsford aftermarket parts (Lifetime Warranty)
This car has spent 5 years in development with completely new geometry concepts using forward weight bias to take extreme advantage of modern high traction surface conditions. Tekno has set a new standard in terms of performance matched with durability and gobs of support with a sea of team drivers and unparalleled following of aftermarket support. This car does not disappoint, for a competitive racer in either mod or stock, I
...Continue Reading
Posted by tailskid2 | Today @ 03:13 PM | 80 Views
Well now that the Escapade MX has met its expiration date...I was working on the H9 P-51 30cc for a friend....
Posted by MrGearbest | Today @ 01:57 PM | 126 Views
QCY Q29 Bluetooth Double Headset Gearbest Coupon 54% Off

Apple’s AirPods have made untethered Bluetooth earbuds mainstream, but the design itself — that is, two untethered wireless ear pieces — has been around for years. Go back far enough, and you’ll find early models like the Sennheiser MX W1, a pair of big, clunky but functional earbuds that provided stereo audio without a wire tethering them together. As technology improves and prices substantially drop (the MX W1 retailed for $600 new), we’ve seen earbuds of this sort with increased frequency, and joining them are the QCY Q29 pair.

Much like AirPods and Samsung Gear IconX, the QCY Q29 earbuds are both wireless, but not shackled to each other via a physical wire — they’re two independent earpieces that can be used together (stereo) or separately (mono), depending on your needs. The earbuds retail for between $73 and $100, depending on where you get them, making the QCY decidedly attractive from a budget-centric point of view.

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Posted by Keith Kindrick | Today @ 11:16 AM | 208 Views
As he maneuvered his unarmed B-17 bomber over the island of Oahu, U.S. Army Lt. Robert Thacker was puzzled.

It should have been a peaceful Sunday morning in Hawaii.

See the attached PDF for the full story as captured by By Fred Swegles | fswegles@scng.com | Orange County Register
PUBLISHED: December 6, 2017 at 3:50 pm

Posted by MeltrackzFPV | Today @ 10:12 AM | 238 Views
I was flying my Blade torrent 110 and punched it to do a dive and on the way up I heard a pop and seen it coming down .
JUST ONE OF THEM DAYS (3 min 45 sec)

Posted by MeltrackzFPV | Today @ 10:06 AM | 241 Views
Me at the Badlands in Socastee RC track PID tuning the torrent110
Playing on the RC Track / Dives (2 min 28 sec)

Posted by Barts_Hangar | Today @ 06:07 AM | 426 Views
Check out this incredible model the Sopwith Camel World War I Warbird, seen here flying at the BRCM annual warbirds over the bay event. Gotta love the slow flight and handling in the air!
Beautiful Sopwith Camel WWI flight (Warbirds over the Bay) | GIANT SCALE RC PLANE FLYING MODEL (4 min 27 sec)

Posted by TDisaster | Today @ 04:23 AM | 537 Views
I've decided to use this as my UHF setup. Grabbed an EzUHF module from RMRC and used the laser cutter to make a hole in the poor thing. I've been learning the laser the last few days, and this is my first cut on anything that's not scrap wood. It's very clean with the module installed. Tolerances are just about where they need to be, and the module sits square with some adjustment (although, slightly to the right). It's purposely placed a little high to allow for a slight bit more clearance for the main board and wiring. I'm still planning it all out, but I figured a little extra room would be welcome. I've tacked it in with a slight bit of RTV, but the tabs hold well. More for peace of mind than anything. Notice the small dots in the top right from where I was aligning the laser... managed to peck through the tape I was using as a reference. Luckily they're covered by the module. For a first cut on the laser I'm pretty happy, and look forward to improving my techniques.

I'll be using an ATMEGA2560 with OpenTX for the radio. I'm also going to install the small Spektrum RF board and switch between them, so I can use the 2.4 antenna I've already installed. The ATMEGA board should be here in a few days, and from there we should be able to move pretty quickly.
Posted by Jay 123 | Today @ 02:38 AM | 469 Views

Specification and Parameters:
Output power: 25mW
Input power: 3.2–5.5V
Current consumption: 640mA-330mA(25mW)
Camera resolution: 600TVL
Video system: NTSC
Field of view: 120° FOV
Sensor: 1/4" Color CMOS
Video Format: AVI
Recording Resolution: VGA @ 30fps
Micro TF Card: Max 32GB
Operating Temp: -10 ~ 60 degrees C
Frequency: 5.8GHz 6 bands 48 channels,
with Raceband: 5325-5945 MHZ
Size: 22*20mm(L*W)
Weight: 5.8g

Recording Function:
Install TF card first, max 32GB TF card supported.
Press button 1 start recording, R3 will keep flashing
while recording.
Press button 1 again to pause recording, recorded videos
will be saved to TF card automatically and R3 will stop flashing.

Notice: Each recorded video will be within 10 minutes.
After that, a new round of recording will be started automatically.

Posted by ydzf110 | Today @ 01:53 AM | 439 Views
Hi guys! FPV MODEL Ebay Store has just stared a Christmas Sale. Up to 50% off

Check out the below link :


Posted by MikeRx | Today @ 12:16 AM | 535 Views
Microshark 22".
Foam core, 1/32" sheet, 3/32" elsewhere, no glass.
1306, 4000kv quad motor
2-4s 300mah.
88 grams empty vs 240g for the 28.5"
Flies great!
Posted by UpNup | Yesterday @ 10:21 PM | 560 Views
When building the ribs, I mounted the servos with screws and glued them on plywood rails at an angle. The idea is that the servos must be perpendicular to the control horns to work correctly. The control horns were cut from the clear cover of an Apple iPhone earplug box. I cut them out with my rotary drill. I sanded them and painted them with Testors aluminum (dull silver) paint.

In this set, you'll notice that I've glued metal beads down the tops of the ribs. On the original wings, there are these beads just under the skin. It's like they are clamps or U-shaped staples of sorts holding down some kind of wire or line running down the tops of the ribs. My concern is that they'll melt through Monokote when the covering is ironed on. I plan to test it. The little metals beads were found on a 2 pound exercise cuff that my wife used. It had "runs" in them like a women's hose that dripped these tiny pellets. And they worked perfectly if they won't damage the covering.
Posted by QuadifyRC.com | Yesterday @ 09:38 PM | 646 Views
I now have 5 brushless quads 3" and smaller and none of them have good battery straps. I'm always jealous of the Airblade UAV straps Nick Burns has in his videos but the shipping outside of Canada and the US is not flash. BG are now selling several straps that fit, are inexpensive and have free international shipping. More details in my brief tips and tricks review:


Posted by AlkaM | Yesterday @ 08:10 PM | 658 Views

Its been a while since I put up a DIY electonics blog post. I live in Canada so I try to spend my summer outdoors. This next one took me a little while to get right, I made the first revision around June of this year and made a mistake with my original schematic. I built the board and programmed it and everything seemed to work but I could not get a motor to spin up. Thinking this was a software problem I then devoted the next two months adjusting and tinkering with startup parameters and motor profile settings.. It was not a software problem. I had completely screwed up the op amp gain resistors circuit and no amount of changing settings would fix that. A sharp knife and some small wire did fix my problem and after that i was able to get a motor spinning.
I haven't tested much yet but this is a stripped down simplified version of the "steval-stspin32" demonstration board. It has the same pinout for the user keys and potentiometer and the firmware example will run on my board without much modification. I did have to play around with dead time and pwm and foc rates to make my board run and start up stable.
I used the bull running 1700 kv motor that came in another nucleo kit because the motor was already profiled. If using an unknown motor you will have to create a new profile for that motor and recompile the firmware. That's the problem with FOC. You can't just hook up an unknown motor.. and profiling a motor is not a simple thing.

I will include the gerber and diptrace files again like my other posts also a working firmware binary for the bull running 1700kv motor. There is a lot of potential for this little chip as it contains the gate drivers, voltage regulators and mcu all in one. The stspin32f0A is probably a better choice for rc as it has a wider voltage range ( down to 2s lipo).

Simple FOC speed control board using stspin32f0 (1 min 13 sec)