Posted by phyngineer | Today @ 01:56 AM | 31 Views
"One who fails to reach the Great Wall is not a hero." The Great Wall is known as one of China's symbols. But this majestic ancient building that has stood in China for nearly two thousand years has long lost its original majesty due to the erosion of the years.

The Great Wall, the "Great Wall" in our mouth, is the greatest and most majestic military defense project in ancient China. The oldest Great Wall in history dates back to the Western Zhou Dynasty. During the Spring and Autumn Period, the Great Wall built the first climax, and the various vassal states built the Great Wall fortifications on their respective borders. However, the Great Wall during this period was relatively short and relatively low. After Qin and the Six Kingdoms joined together with China, they repaired the Great Wall links of the various vassal states and they were known as the Great Wall. The Ming Dynasty was the last era to overhaul the Great Wall. The Great Wall that we can see this year is mostly the buildings of this period.

The Great Wall resources are mainly distributed in 15 provinces, municipalities and autonomous regions such as Beijing, Tianjin, Hebei, Shaanxi, Shanxi, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Shandong, Henan, Ningxia and Xinjiang. According to the National Great Wall Resources Survey conducted by the Chinese Cultural Relics and Surveying and Mapping Department, the total length of the Ming Great Wall is 8851.8 kilometers. According to...Continue Reading
Posted by PeterVRC | Today @ 12:43 AM | 43 Views
The next logical extension of the DIY Afterburner LED unit was to ADD more functions. Seeing a microcontroller can do a LOT of things... it may as well be set up to do all the common things you might want or need.
So:

1) Afterburner LED system - with two Modes of operation.
Mode 1: Off, or Afterburner ON = Flicker constantly (for older era jets)
Mode 2: Off, or Afterburner ON via a short Flicker (for AB ignition) and the ON Solidly (for more modern jets)

2) Strobe Light Outputs - for Three different timing version Strobes.

3) Super Gear Sequencer.
a) Two modes - Main Gear Doors close after Gear Extension.... or they stay open.
b) All Servo Endpoints can be individually set, so that the Doors are accurately opened and closed.
c) Door Operation Speed can be altered.
d) 'Memory' of the last used state, so that it can resume the same state on the next power up
e) Tracks the state of doors and retracts so that any decision to change gear direction part way through a cycle still 'reverses' everything in a correct order so there are never any 'collisions' of Doors/Retracts.

It has some Options. Such as:
- The afterburner can have a trim pot added to allow real--time setting of the AB/Throttle Trigger point.
- A Pin Header jumper to enable/choose Mode1 Afterburner (it defaults to Mode0).
- A Pin Header jumper to select the Gear Doors operation mode

It is 95% all done - the coding is done and works, but I have not made up any document(s) for it yet.
I am also still...Continue Reading
Posted by VicT | Yesterday @ 11:47 PM | 42 Views
The Esprit Prop Shaft Adapter is about 30 % bigger than the stock unit so you can put more torque on the nut and threads. This translates so about 30% more gripping power between the aluminum collet and steel 5 mm motor shaft. In Jason Ms video he recommends holding the spinner backplate or motor to keep the threaded adaptor from turning. This is done with one hand while the other hand uses a wrench to tighten the nut.

I made up a tool that slips into one of the 4 motor cooling slots and this keeps the motor/shaft from turning while the collet is being tightened onto the shaft. Its a steel 6 mending bar that I cut with a hacksaw and filed down to fit the slot. Its bent into an S shape to fit between the prop and plastic nacelle. The nacelle is cut out for clearance.
Posted by Hobby Details | Yesterday @ 10:51 PM | 52 Views
Hobby Details Powerful Power2 Electric Mini Screwdriver RELEASE Now👏👏👏👏

3.6V, 1300mAh, 180rpm, 3.5Nm, Chuck 6.35mm Hex, 18650 Battery with lighter weight 318.8g.
Great to assemble and repair your RC car, drone, boat, airplane, FPV and many more. And the price will second to no other tools with its great performance.
Wholesale Price please PM or contact me at: [email protected]
Posted by Capt jk | Yesterday @ 10:25 PM | 52 Views
Hi all,
I really hope to get the issues related to interaction with everyone resolved. I am hoping to hear from people, share progress, and learn from you all.

Below are pics of my progress. The fuselage is nearing completion of the Balsa wood build phase. I have sanded and applied filler, it is nice to see the classic B-17 lines.

Most of my electronic parts have arrived. I am waiting for the control lines as I hope to install them next to seal up the fuselage.
Posted by old4570 | Yesterday @ 10:07 PM | 69 Views
Yes , you know your getting old when FUN hurts ! ( My achy breaky body )

Its windy as all outdoors again , so what to do except window shop ( maybe spend some money ) .

Picture 1

Another Lipo powered FF glider , yes I had to buy it !

Picture 2

3D printed motor glider ( glider ? ) . No I didn't buy it , but available out of the USA on Ebay . Looks interesting .

With this windy weather , I should move on some projects ( but my body hurts ) . Hmmmm
I have that 1 meter glider , and the Tx & Rx from the Invader , + some brushed motors that should work with folding props .




Brushless 1s ESC
Yes , I want some ..
With all these new quad motors that can run 1s , you need a 1s ESC

https://www.banggood.com/AEORC-E-Pow...r_warehouse=CN = Came today ( Yes I got this one for myself )
https://www.banggood.com/1S-2S-7A-Br...r_warehouse=CN
https://www.banggood.com/1S-5A-ESC-F...r_warehouse=CN
https://www.banggood.com/XK-K110-K12...r_warehouse=CN

Hmmm , yes I want a brushless 450x wing that runs 1s ...
There is a video on youtube , a 450x wing running on a single 18650 . ( ??????? ) Not sure I like the weight !

But still !
Posted by TinkleWid | Yesterday @ 06:24 PM | 114 Views
Found another great new spot for some close proximity fpv flying. It gave me a chance to test out the Lumenier AXII Long Range Antenna on my goggles for penetration. There were far too many people around to test long range today but the new long antenna is a great improvement over the stock anttenna, especially as I sit down to fly.

NEW Lumenier AXII Long Range: https://www.banggood.com/custlink/vGDKjUcjgC

Caddx Turtle V2 on Armattan Gecko 3 with New Antenna Lumenier AXII Long Range | NO TOOTHPICK FRAME (2 min 54 sec)


Waterproof Transmitter Beam Port Bag
NEW BACKPACK: https://www.banggood.com/custlink/3D3KZIHHRP

Equipment Used (3 inch build): sub 250g quad
Armattan Gecko 3: https://www.armattanquads.com/gecko-3/
Caddx Ratel Starlight Camera: https://www.banggood.com/custlink/3m33VyzOW2
Caddx Turtle v2: https://www.banggood.com/custlink/DDmmPAUn4K
Receiver to replace bulky HGLRC TX20 VTX: https://www.banggood.com/custlink/mDGDHEzopf
NEW Lumenier AXII Long Range: https://www.banggood.com/custlink/vGDKjUcjgC
Gemfan 3052 https://www.banggood.com/custlink/m3v3VNUn4U
XM+ : https://www.banggood.com/custlink/3DmGFNqsBw
VRD2 Pro Goggles: https://www.banggood.com/custlink/KDvmHAUnsR
Brotherhobby Tornado T1 1407 4100KV https://www.banggood.com/custlink/vv3G9GL4bt
Acehe 850mAh 4S 75C-150C LiPo Battery - bought in the UK
TPU Mount for the Caddx Turtle: https://www.banggood.com/custlink/mKDvSDHcC0
Thingyverse Mount for Caddx Turtle: https://www.thingiverse.com/thing:3210256
GoPro replacement M12 Lens (less fisheye): https://www.banggood.com/SHOOT-170-D...r_warehouse=CN
Jumper T8SG https://www.banggood.com/Jumper-T8SG...d=124521124520
VTX03S (UK Warehouse) https://www.banggood.com/Eachine-VTX...r_warehouse=UK

Not Used: (spare kit)
ND Filters (ND8) for Caddx Ratel
https://www.banggood.com/15mm-Caddx-...tlinkid=292341
HGLRC Flame: 1407 motors: https://www.banggood.com/custlink/G3mD5NzQjT
Lipo Tattu 850 4S:- https://www.banggood.com/custlink/GGmKFAkbg0

The Caddx Ratel allows a live FPV feed and a the Caddx Turtle v2 records the HD DVR, without the weight of a heavy HD GoPro. The Turtle V2 brings no real improvements over the original version apart from the awful sound.
Posted by TinkleWid | Yesterday @ 06:24 PM | 114 Views
Found another great new spot for some close proximity fpv flying. It gave me a chance to test out the Lumenier AXII Long Range Antenna on my goggles for penetration. There were far too many people around to test long range today but the new long antenna is a great improvement over the stock anttenna, especially as I sit down to fly.

NEW Lumenier AXII Long Range: https://www.banggood.com/custlink/vGDKjUcjgC

Caddx Turtle V2 on Armattan Gecko 3 with New Antenna Lumenier AXII Long Range | NO TOOTHPICK FRAME (2 min 54 sec)


Waterproof Transmitter Beam Port Bag
NEW BACKPACK: https://www.banggood.com/custlink/3D3KZIHHRP

Equipment Used (3 inch build): sub 250g quad
Armattan Gecko 3: https://www.armattanquads.com/gecko-3/
Caddx Ratel Starlight Camera: https://www.banggood.com/custlink/3m33VyzOW2
Caddx Turtle v2: https://www.banggood.com/custlink/DDmmPAUn4K
Receiver to replace bulky HGLRC TX20 VTX: https://www.banggood.com/custlink/mDGDHEzopf
NEW Lumenier AXII Long Range: https://www.banggood.com/custlink/vGDKjUcjgC
Gemfan 3052 https://www.banggood.com/custlink/m3v3VNUn4U
XM+ : https://www.banggood.com/custlink/3DmGFNqsBw
VRD2 Pro Goggles: https://www.banggood.com/custlink/KDvmHAUnsR
Brotherhobby Tornado T1 1407 4100KV https://www.banggood.com/custlink/vv3G9GL4bt
Acehe 850mAh 4S 75C-150C LiPo Battery - bought in the UK
TPU Mount for the Caddx Turtle: https://www.banggood.com/custlink/mKDvSDHcC0
Thingyverse Mount for Caddx Turtle: https://www.thingiverse.com/thing:3210256
GoPro replacement M12 Lens (less fisheye): https://www.banggood.com/SHOOT-170-D...r_warehouse=CN
Jumper T8SG https://www.banggood.com/Jumper-T8SG...d=124521124520
VTX03S (UK Warehouse) https://www.banggood.com/Eachine-VTX...r_warehouse=UK

Not Used: (spare kit)
ND Filters (ND8) for Caddx Ratel
https://www.banggood.com/15mm-Caddx-...tlinkid=292341
HGLRC Flame: 1407 motors: https://www.banggood.com/custlink/G3mD5NzQjT
Lipo Tattu 850 4S:- https://www.banggood.com/custlink/GGmKFAkbg0

The Caddx Ratel allows a live FPV feed and a the Caddx Turtle v2 records the HD DVR, without the weight of a heavy HD GoPro. The Turtle V2 brings no real improvements over the original version apart from the awful sound.
Posted by UpNup | Yesterday @ 05:49 PM | 115 Views
Piecing together a canopy has been interesting. The acetate has to be curved. Fastening glass to the ply formers has been a challenge.

I started with cardboard cutouts. I had an old cowl that was perfectly curved. It also handles the heat from my heat gun.

Glues wouldnt stick. I found that CA provided a strong surface. I used double-sided clear tape. Its an experiment right now. However, I like the acetate the im using. Keeping the inside clean will be important.

My plan is to cut out 1/32 ply frames to glue over the joints.
Posted by UpNup | Yesterday @ 05:48 PM | 116 Views
Piecing together a canopy has been interesting. The acetate has to be curved. Fastening glass to the ply formers has been a challenge.

I started with cardboard cutouts. I had an old cowl that was perfectly curved. It also handles the heat from my heat gun.

Glues wouldnt stick. I found that CA provided a strong surface. I used double-sided clear tape. Its an experiment right now. However, I like the acetate the im using. Keeping the inside clean will be important.
Posted by Dude Nurse | Yesterday @ 04:44 PM | 157 Views
OK just received mine. Looks like the FTr16 receiver might be complicated. I saw a lot of threads where all any one wanted to do was complain. Change is good, and acceptance can save you money and reduce stress. So I say the PL18 probably saved me anywhere from 200 to 800 dollars. I like the lipo internal for multiple reasons, like it makes me ensure I don't be lazy and not charge, it can last up to 8 hours of fly time and most likely will, can be charged wirelessly and Micro USB so if I'm weak enough to not charge before I go to the field and even forget my Micro USB cord and remember to bring the wireless unit I can still charge. I fly airplanes, helis and am building a hex copter and am willing to bet that I will be able to use it for my hovercraft and my PT 109. It feels great in my hands, it warns me of errors I am making before I cause myself problems, tells me the battery left on both Tx and Rx with a simple graphic representation. And I still haven't found out a minuscule fraction of the capabilities available. If you are scared to buy one, download the operators manual and quick start guides and learn about it before you sell it short. It looks like the racing receiver is a bit complicated, but because I build from balsa plywood basswood and plans, I'm sure I will enjoy the challenge. Came to me from Hong Kong in about 10 days. Can't wait to launch my hex with this radidio.
Posted by DutchRC | Yesterday @ 12:47 PM | 251 Views
Halloa people

sooo yes.. SJcam has itself a new action camera, and in case you don't know SJcam: they are one of the less costly alternatives to Gopro camera's..
I ordered one in pre-sale and received it last week.. Time to do some tests with it!

link to the camera: SJcam SJ9 Strike - 4K action camera

First test I've been doing is microphone / vlogging tests:

Vlogging tests with SJCAM's new Flagship 4K Action Camera - SJ9 Strike Review P.1 (7 min 26 sec)


the external microphone I used:
https://www.banggood.com/Original-SJ...13974002015038

Playlist with Unedited video's:
https://www.youtube.com/playlist?lis...kPLNUK9Ye_aCGh

Specifications:
shape: classic Gopro shape
max video res: 4K at 60 fps
max frame rate:
video codec: MP4 H.264 or H.265 - user selectable
max photo res: 12 MP - 4000x3000
field of view:
max CF card size: 128 GB - (I would suggest an U3 card)
microphone: dual / stereo
external microphone: Yes, via USB-C
gyro stabi: Yes, up to 4K 30 fps
WIFI config option: Yes
battery: 1300mah Lion
max recording time: +/- 2 hours at 1080P 60 fps
viewfinder screen: Yes
touch-screen: Yes
second (front) screen: Yes
usb-type: USB-C
water proof: Yes up to 10 meters without extra case
Posted by HangerJake | Yesterday @ 11:29 AM | 332 Views
Greetings. Just got a Dumas Gipsy Moth for my birthday. I decided that since there is not too much info on this particular kit from Dumas that Ill start a build thread. I intend to design the plane to be a a 4 channel with ailerons. Unlike the Trittle Tiger Moth the Gipsy is a little smaller and instructions do not include how to make it RC. With 30 to play with, I think theres plenty of room for a wide variety of options.
Im going with the lightweight PICO GWS radio that I had in my GWS Tiger Moth (Yes I love Tiger Moths)
Considering going with a brushless BL250 for power... probably almost too much but it flies the Trittle Moth with plenty of power!
Posted by hifinsword | Yesterday @ 07:20 AM | 445 Views
Anyone interested in the Freewing F/A-18C 90mm EDF should post questions for it on the MotionRC forum here:
"Freewing 90mm F/A-18C 90mm EDF Jet - Official Thread"

I bought the PNP model from MotionRC in the Blue Angels livery. My maiden flight is posted below.


4th of July 2019, Freewing F-18C maiden flight (3 min 57 sec)



It is the fastest, and prettiest model I have owned. It gets a lot of positive comments when people see it.

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SPECS:
Freewing F/A-18C Hornet 90mm 9-blade EDF Jet PNP
Wing Span 1034mm / 40.7in
Length 1500mm / 59.05in
Weight 2640g ? /5.?lbs 93.12oz empty - not confirmed yet
Airframe material - EPO
Retracts - Trailing Links w/oleo
Power - 22.2V 6S 5-6k mAh
ESC - 130A 5V/8A UBEC
Motor - 3748-1750Kv BL OUTRUNNER Motor
Fan - 9 blade
Hinges - All Nylon, Plastic split flaps
Lights - Nose Wheel landing light, top center blinking LED, port & starboard RED/GREEN LEDs
Servos 7x 9g Servos - 2 AIL, 2 FLP, 2 RUD, 1 Steering; 2x 17g ELE Servos
Tires - Front tires 2in, Rear tires 2.5in
Cheater Vent

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Where to buy. There are 4 models available as of July 2019. They can be found HERE. There is a PNP model and an ARF model, in a base gray color and the BLUE ANGELS livery. PNP models are $479. ARF models are $379.

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...Continue Reading
Posted by Kmot | Sep 14, 2019 @ 11:01 PM | 595 Views
Today, I converted a Hewlett Packard 500W PSU to a 12V DC bench top power supply to use with RC battery chargers. I cut off 53 wires and 10 connectors. I grouped like wires together and then covered them with heat shrink tubing. I soldered 6 12V leads and 6 ground leads each in parallel. I soldered the power on signal wires together so that the power supply turns on when plugged into 120V AC. When I was finished I connected my Turnigy quad charger to the converted PSU and the charger lit up and then I charged a 2200 3S LiPo at 8.36 amps. Pretty cool.