R/C Blogs - RC Groups
Posted by GBLynden | Today @ 02:25 AM | 13 Views
This is my Unboxing for the Freewing Lippisch P.15 64mm EDF Jet. It is a beautiful RC Plane with an interesting history.

Unboxing Only - Freewing Lippisch P.15 64mm EDF Jet (10 min 25 sec)

Posted by phil alvirez | Today @ 12:51 AM | 49 Views
i have flown at thermals that start from the ground, and others at the base of a cloud.
from the ground, i have flown hand launched gliders (free flight) and watching for the breeze to flow and stop have been able to detect the cycle and launch at the right time.
from the base of the cloud, with r/c electric gliders.
from the ground, there is no doubt that they start at ground level and keep raising. some say as bubbles, others as cones.
and seem to increase in diameter and strength as they raise.
but those that are found at the base of a cloud seem to behave different.
sometimes the plane stays under the cloud. others, they get into-and disappear. that means they keep climbing.
and in the case of those that remain at the base of the cloud, sometimes getting a little bit lower there are no thermals. they sink.
so seems that they are created by the cloud itself and only at that level.
am posting it with the intention to hear from those with some experience on the subject.
please only comments polite, positive and to the point.
i started a thread here-lets see if some1 brings positive comments: https://www.rcgroups.com/forums/show...thermals-where
Posted by old4570 | Yesterday @ 06:38 PM | 229 Views
Posted by felipe westin | Yesterday @ 06:11 PM | 244 Views
X4 Hybrid

Design of a big quadcopter for crop dusting, industrial inspection, aerial photography, etc.

The "head" in the top is the generator bay with a 2T gas engine, battery, ECU, etc


AUW: 25Kg
M2M Distance: 1715mm
Total height: 795mm

The frame are designed to be fabricated with 3mm carbon fiber and nylon 6 structure.

Arms made with a carbon fiber frame covered with polyurethane and revested with kevlar and fiberglass. Connection points to motors and frame made with nylon 6 plastic.

Inside in the frame are the four ESCs, power distribution board and the flight controller.

The energy for motors, LEDs, flight controller system, etc is provided by the generator and connected to the frame by "military style" connectors.

The payload bay uses a modular connection system with a single M10 allen screw and a large number a payloads can be mounted like camera rigs, crop dusting, LED system, LIDAR sensors, RGB/Infrared/Multispectral cameras, etc

The booms can by collapsed for easy transportation and fit in a case.
Posted by Galangl | Yesterday @ 05:15 PM | 369 Views
I recently purchased a lot of Ehang goggles at a local auction. I knew the quality would no where close to Fatsharks but they would probably good backseat driver spectator goggles. Here are a few specs

- Front Facing Camera
- Internal 1s 1700mah lipo
- 32 channel auto search
- USB micro charge port able to use power banks to charge and fly
- AV output port
- 2.8g antenna for head tracking data for Ghost VR drone
- 5.7g antenna (no diversity)
- 3 headstrap system for better hold and comfortable wear

The camera unfortunately has no IPD, no diversity, a decent screen, no DVR and a subpar antenna. I decided to open up one of the goggles and was surprised to see a diversity module can easily be hooked up without any soldering. The camera switch button also turns off the built in reciever so there is no interference.

To install the diversity module just cut and strip the camera connector and use 1p Dupont connector to hook it up to the diversity module to the according 5v, ground and visual signal. No voltage booster needed since the camera uses 5v.

The hardest part will be fitting the module. I will take a dremel to it and see what I can do.
Posted by Thunder50BMG | Yesterday @ 03:53 PM | 327 Views
If you are stuck on this hobby building same pre-historic multi-rotor configurations, I am inviting you to spice it up by building newer configuration like this IN-LINE BICOPTER with Chinook type body. If you are talented enough to make a fuselage then this project is perfect for you. Wish I have the talent but, I don't and I will just end this project like this.

Specs are the same as the 1ST build, even the MTM @ 19 inches. The Sunnyskys motors made this platform super smooth and with the FiteTEST yaw system, it's just totally perfect.

Close-up PIX ....maiden video will follow soon.

...Continue Reading
Posted by Absaroka | Yesterday @ 02:52 PM | 342 Views
On to 700.
Old Tundra again (4 min 7 sec)

Posted by maddmatter | Yesterday @ 02:38 PM | 347 Views
Balance is important in planes. Especially RC planes. I thought these would need lots of effort, but it turns out, mostly just removing the flashing gets them to balance nicely!
Posted by radfordc | Yesterday @ 02:00 PM | 400 Views
Here is how I make the gun from a set of kit parts. These parts were printed at 1/4 scale. Here are all the parts for the receiver and the barrel.
Posted by mfwilliams | Yesterday @ 01:14 PM | 404 Views
He's back! Been busy with work for the past 8 months. Now that my work project is done, I'm back home enjoying the retired life. Knowing this, Poh called me up and coerced me to join him and Gary at Eagleville for some thermal flying.
I caught up with them about noon at E'ville. Gary and Poh were already specking out. Amazing, since the wind was about 10-15 with 20mph gusts. I was going to fly my Radian, but backed off. It was just too gusty for a lightweight bird. Luckily, I had charged my Jerry warmliner and brought it along just in case. Thermals were strong, but very fast moving as you would expect. I actually thermalled the Jerry out ( not an easy task). After about two hours of flying we called it a day. No crashes, no damage for anyone. So it was a good day. Then it was off to the Maple Street grill in E'ville for some comfort food and jaw-jacking.
Mike...Continue Reading
Posted by halicopter | Yesterday @ 12:36 PM | 404 Views
so decided to turn the 7" monitor into some goggles ...used the monitor ,stripped some vr goggles down , and found a lens that used to be for magnifying a mobile phone screen ,surprised it worked as well
Posted by Woodinthesky | Yesterday @ 12:12 PM | 404 Views
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Posted by Rural Flyer | Yesterday @ 12:03 PM | 437 Views
The Camera on the HS-100 is quite stable and has potential for many uses beyond just flying around on the drone itself...

Since I had a spare kicking around I thought it might be useful to re-purpose it as a "Hat-Cam".

HS 100 Camera Hack to Hat Cam (2 min 7 sec)

Although the HS-100 cam is just 720 x 1280 res, it does record at a solid 25 fps (frames per second) which is an improvement over the MJX Bugs 2C cam that I had previously used as a hat-cam, as it uses a variable bit rate, and records between 19 to 20 fps, so appears somewhat jagged by comparison.

Beyond the simple stuff like dis-assembly, there were a few things I wanted to note, as this may not be the final version of this project.

I used the original factory cable from the cam to measure the voltages present on the wire.

White 3.7Vdc
Red 2.9Vdc
Blue 0.01V and going to 0V when Picture or Video is initiated via the TX/Controller
Black 0V Ground.

This camera is a bit different from the UDI R/C, Syma and MJX cameras that I've torn-down in the past, in that it is an integral part of the Drone's communications system, without the camera installed the drone can not be released from the factory "Geo-Fence" of 30meter from take-off and 20 m Height.

After trying numerous wiring combinations I have settled on White being Vcc for the camera, and Black being ground. With those lines tied to a 1s 3.7V battery, the camera powers up fine, and can be controlled via Wifi with...Continue Reading
Posted by turbinefancy | Yesterday @ 11:18 AM | 444 Views
It’s been very exciting watching recent developments in the foamie EDF category from Freewing & FMS pushing higher levels of scale fidelity and fligh performance with each new product introduction. But I have not bought one since buying 2 Taft Cobra Jets on sale a couple years ago; simply no room in the house to fit more planes. Finally figured I can hang one up on the wall like picture frame and built one of the Cobras. After much tender loving care correcting loose linkages, unbalanced fan, uneven tail feathers, etc. the jet turned out pretty good. Not a speed demon by any means but fast, heavy and BIG needing lots of space to maneuver like a jet should be. Anyways, I am very excited joining the EDF party so very late and really enjoy the heart pounding feeling each time flying the Cobra jet. Oh and it sounds so good.....

Ultra smooth onboard video at beautiful Black Star Canyon, CA - guaranteed not to cause motion sickness:-)
FPV Taft Cobra (8s 90mm EDF) Jet Aerobatcs at OCMA (HD 1080P) (6 min 35 sec)

Ground view of the aerobatic flight (many thanks to my friend tonpilot1 for taking the video)
Flight 2 of motionsic's jet (5 min 21 sec)
...Continue Reading
Posted by maddmatter | Yesterday @ 10:18 AM | 500 Views
So here is my plan, maybe it will resonate with a few people. I love flying. I love designing stuff that flies. Currently I do it for others as a way to make a living. With the advent of flight simulators and better employment of gyroscopic sensors and the reduction in their size, I decided to buy a foam plane I like and learn to fly. I bought the DXE/phoenix combo a year and a few moths ago. I bought an E-flight timber this past September. I spent/spend a ton of hours on the simulator and I have enough land to fly my Timber on very comfortably.

So I do fly it. I love it. It is a thrilling experience. The intent was and is to learn good enough to get a balsa kit, or some type of "scale" model that I can fly without sweating bullets. I did not want a bunch of planes, just one or two I really enjoy.

I also purchased an Aurora 9 last year thinking the DXE was just one to learn on, and I did not know that the Hitec was already old technology, I thought it was a lesser known excellent option. So now I am trying to decide which way to go with radios. I think I am going to have to buy a spectrum which seem overpriced for the features they present, which I do not care for much. Any way more to come
Posted by accel8or | Yesterday @ 01:46 AM | 666 Views
Several years ago, we had this mail carrier. He had a chip on his shoulder. One day, he saw me unloading my car of two model airplanes. He goes, "oh, you play with toys, huh?" I thought that was pretty rude; rude and disrespectful. I didn't say anything, because we are supposed to turn the other cheek. Well, this same mailman tried the same line to my neighbor who happened to be a freeflight enthusiast. My neighbor is a kind man, but he didn't take kindly to the mailman who belittled him like he did me. He gave the mailman an earful short of a broken nose. That same mailman never, ever disrespected me, because of my model airplanes. Now forward 6 or 7 years to 2018. This same mailman saw a neighbor drop her iphone on the ground. He didn't tell her, but instead he pocketed the iphone. Little did he know, that my neighbor has security cameras in the front yard, recording his every move. To make a long story short, the police department called him and told him he had so many hours to return my neighbor's iphone. He did, and avoided prosecution. He was only weeks away from retirement. We never saw his sorry bleep again.
Posted by Dan.Cummins | Mar 16, 2018 @ 11:55 PM | 690 Views
Had a request for some Heinkel servo trays.......so here are a couple layouts you can use. Print 1:1 (full scale), mist with 3M77, paste to 2mm G10 or ply, and cut/sand to the lines.


Posted by FireDad913 | Mar 16, 2018 @ 10:46 PM | 757 Views
Will list specs later. Built on Martian 2. Todays project. Really coming together.