Posted by freddy_fo | Apr 26, 2017 @ 10:54 AM | 5,176 Views
Time to build my ARC Great Lakes biplane from modeltech. Picked this kit up a few months back as I love biplanes. In my usual manner and in the excitement of getting a fairly unique biplane I clicked the buy button before doing my research. I wasn't able to find much but when I did the reviews weren't very good. Most complained of poor handling... ugh! Further research brought me to a post where the fellow had good luck by adjusting the incidence of the main wings to fit more in line with a typical biplane.

This plane was built for IC so mods would have to be made for electric. Most importantly an access hatch for swapping batteries. I haven't decided on a power setup yet but pretty sure I'll go 4S. Initially I am thinking a nice heavy Cobra C-4120/14 710K motor weighing in at just under 300 grams. The plan is to get the plane assembled without covering then get a rough idea of how much weight I'll need in the nose to get it to balance at the aft point.

I started assembly a few days back and got the lower wing mounted last evening so time to do an initial incidence check of the wing. I got the rear h-stab temporarily mounted and checked to find that it is parallel to the thrust line. With it level I checked incidence on the wing and was at -1 degrees. Ugh! Shimmed it 3/16" at the trailing edge and was able to get it to 0. So now time to build up the wing bed. Ideally on most aerobatic bipes I's want +.5 but the plane will start to look goofy to get that. The wings are a symmetrical airfoil so this plane may be better tuned for a 0-0-0-0 configuration. I think I'll still put -.5 on the top wing when it comes time.
Posted by Shirty | Apr 26, 2017 @ 09:28 AM | 9,554 Views
One of my clubmates captured these nice shots of me flying my 60 edge and lil 48 extra. Damn I love flying these two planes, they are sensational for 3D. Absolutely two of my favourites in my hangar.
Posted by halicopter | Apr 26, 2017 @ 09:00 AM | 5,989 Views
Posted by thijs slotman | Apr 26, 2017 @ 07:47 AM | 4,370 Views
hey guys!
finaly able to make some video's of my bee 90!!
i used:
syma x11 fc
7mm motors
380 mah 1s lipo
Bee 90 frame
fpv footage bee 90mm (syma x11 fc) (2 min 6 sec)

Posted by readysetdrone | Apr 26, 2017 @ 07:18 AM | 3,919 Views
We race a DJI Phantom 4 Pro and a DJI Mavic Pro to see which is faster!
Phantom vs Mavic - Which is Faster? (6 min 59 sec)

Posted by reddyrightnow | Apr 26, 2017 @ 07:03 AM | 5,012 Views
D9 Bulldog Drift Car ~ DTM Fox Body Mustang
Posted by silverxxx | Apr 26, 2017 @ 05:08 AM | 26,904 Views
Keil compilation instructions for silverware:

Compiling a firmware with custom options is done using the software program Keil, on windows. This currently is the correct procedure for Bwhoop b03, E011 and also H8 mini with blue board. Use the right code for the board / quad please, they do not work correctly otherwise.

Software installation:

1) Install Keil MDK from
Note: right click the downloaded file and select "run as administrator", or there may not be enough folder access rights.

2) Install STM32F030 cpu support pack using the pack installer in Keil uVision. Keil uVision will ask to install the correct pack when the project file is open, if not installed. Choose "install", and wait for installation to complete (download). This will take some time.

Compilation process:

Assuming the installation process was performed correctly, we will now use Keil to compile a "binary", which is the file containing the firmware of the quadcopter.

1) download the project files from
Unzip to a folder of your choice.

2) open project file "/Silverware/silverware.uvprojx" or similar in the Keil uVision program. This can be done by double-clicking on the file for example.
Keil uVision may ask to install device support if not present, click "install", and wait for completion, which may take some time as it is downloaded.

3) Change the settings to your preference, generally using config.h and pid.c for acro pids.

3) compile the project and make sure there are zero errors reported in the lower part of the window. Use either the "build" toolbar icon, menu "project/build target" or "F7" hotkey. Keil will also save changes to files at his point.

4) Open the folder "/Silverware/Objects" ( name may change slightly) and find file "bwhoop.hex". This is the firmware file, to be flashed to the quadcopter using the "st-link utility" program.


Code location:

Keil download page:

Posted by Sudsak | Apr 26, 2017 @ 04:16 AM | 2,225 Views
Took a five year break from the hobby but I'm starting back up with a purchase of a Syma X5C-1 for now.

Charged up my old Walkera Ladybird and the Devo 10 TX and tried to fly. I'm horrible. Still having a hard time with that damn thing like I always have, the thing is so squirrely.

It's interesting to see the advances in the hobby in the last 5-6 years.

I'm hoping the X5C is a little easier to fly. Looking forward to seeing some of the camera footage as years ago no inexpensive quads even had cameras, now it seems you can't find one without!
Posted by glassfox | Apr 26, 2017 @ 04:08 AM | 15,401 Views
Foxtech is hosting a group purchase of USD149.99 free DHL express shipping for DYS 83mm Micro Racer RTF Combo(Drone and Radio controller plug and fly version) , In order to stimulate FPV hobbyist racing enthusiasm in the coming good weather
Hereby Thanks for the support from DYS to Foxtechhobby.
1.The group purchase is limited to 20 units DYS 83mm Micro Racer RTF Combo(Drone and Radio controller plug and fly version)
2.Group purchase process is:
--Click the link:
--Chose RTF with any color and then goto shopping cart
--Chose DHL and fill the coupon codeDYSRTF
--After checkout, you will get USD149.99 Free DHL express shipping for DYS 83mm Micro Racer RTF Combo(Drone and Radio controller plug and fly version)
3.All 20 group purchase orders will be sent on 5th May.
Posted by rita.sue | Apr 26, 2017 @ 01:56 AM | 2,253 Views
Beijing Hobby Expo is just closed, here show some photos taken by Shenzhen HPY Battery :

HPY Battery also attend the Hobby Expo to show its RC batteries to customers.
More information pls contact Rita from Shenzhen HPY Electronic Technology Co., Ltd.
Posted by Ouvyous | Apr 25, 2017 @ 11:18 PM | 2,035 Views
I am completely new to everything on this website and related to this website!
However, I have a question regarding quadcopters and payloads.

Is there a way (formula, equation, ratio) to demonstrate the relationship between the rotor blade length, RPM, and motor power?
I need to theoretically hover about 10 pounds 3 inches off of the ground using quadcopters, however, I know absolutely nothing about them nor how to set this up.

Any input is appreciated,

Thank you.
Posted by sanukiudon | Apr 25, 2017 @ 09:32 PM | 4,342 Views
Servo cover making (2 min 7 sec)

Posted by BernardW | Apr 25, 2017 @ 07:18 PM | 6,523 Views
I'd like to add a Raspberry Pi and some sort of servo etc. controller board to my RCM Trainer 60, and add autopilot software such as Paparazzi or OpenPilot, not to use commercially yet but to start getting some knowledge and experience of fixed wing UAV's. Eventually I would like to get into this commercially using my own designed and built aerial platforms, in a much larger size and carrying more instruments, for geological surveys for mining, aerial photog. for farming, forestry or anywhere you need to cover a longer range and get aerial photos or other data. I'm extremely interested in this and have many ideas.

If anyone has done this, as far as adding autopilot and other robotic control software etc. please let me know, I'd love to discuss this and get your advice, and I'll post everything I manage to get working. I know there are UAV areas on RCG so I will definitely check them out next.
Posted by nh4clo4 | Apr 25, 2017 @ 04:42 PM | 4,412 Views
After successfully granting permission from the wife, now the cat says,"you can go flying over my dead body".😛
Posted by LemonC | Apr 25, 2017 @ 04:38 PM | 9,557 Views

Pretty much ready for maiden flight!

One of my motors needs to be replaced, but should still work for a couple sessions i hope.

Somewhat tricky build due to you need to use some specific parts to work with available space.

I decided i wanted this frame so i could easily mount my runcam2 hd cam. BUT when the runcam2 is mounted, it does not appear that im gonna be able to run 5inch props which i kind of a bummer... :/ Without a runcam2 on the back it will easily run 5inch props. I will be running Q4040 dalprops on my racerstar 2205 2300kv motors. they seemed to be nice on my 195 kim setup but i didnt use a runcam on that build...

I ended up getting new foxeer arrow ccd 2.5mm lens. It has voltage osd which is nice. I was gonna try a much cheaper cmos cam kinda like a fatshark cmos cam, but the connector was at the bottom and there is hardware right where the connector is which would be snapped off on a crash most likely... the foxeer connector is at the top.

The TBS Unify vtx i used has U.FL connector which is good bc less chance of vtx damage if/when antenna lead gets yanked (it will pop off instead of rip off). I used a 10mm lead with 90degree sma connector i believe. the flat backside of the TBS VTX i have allow it to fit in the mix pretty well. I also picked up a dipole antenna i can connect via UFL connector if i decide to lighten my load a bit.

(better pics soon/smudged lens :/)
Posted by thijs slotman | Apr 25, 2017 @ 03:54 PM | 4,150 Views
working great! i really can't wait to upload flight footage!
only thing is that there is 18 km/h wind here
anyways, enjoy
DVR unboxing! (1 min 36 sec)

Posted by Late99 | Apr 25, 2017 @ 03:07 PM | 7,824 Views
One more Model Expo visited. Brought three planes to our club stand: 3D printed Spitfire, Extreme Flight 48" Yak 54 EXP and indoor Extra. I also flew dozen of demo flights with the Extra in the indoor flight arena.

I was very happy with our club stand, we had plenty of different kind of planes for display there. Also simulator was available for visitors / interested people to test. The fair itself is getting smaller and smaller. I guess it's just too expensive for hobby stores to attend, which is a real pity. Raku actually was also the only flying club dedicated mostly to aeroplanes attending.

More pics are available here for those interested...
Posted by AcroMode20 | Apr 25, 2017 @ 01:57 PM | 3,449 Views
Posted by Bunnyshooter223 | Apr 25, 2017 @ 01:48 PM | 5,155 Views
Here is a pic of my Saito FA-72 Exhaust Manifold.
This manifold thread size is suppossedly 12x1mm. Threaded on both ends.

It looks a bit too short to work as a 'Pipe' like on a Saito FA-45 MKII
or Enya 46-4C.

I think a 2-inch extension would work, with tip rounded inwards a bit to aid pressurization.
Posted by gquiring | Apr 25, 2017 @ 01:04 PM | 6,946 Views
I ordered a sailplane holder from Greece recently. It arrived this week and I am glad I got it. I am always nervous leaving my sailplane on the grass, loose dogs and small kids. The other day I watched a small kid jump over my sailplane because it was too much effort for him to go around it This will give me some peace of mind. It's well made and sealed with two coats of sanding sealer. The product is priced reasonably at $35 bucks. The problem is shipping from Greece to the USA was $38.

I purchased on this thread: