Posted by Frank Feldhaus | Today @ 01:59 AM | 1,202 Views
Hello everyone,

I bought an old kit from Einar Johnsson some time ago. It is the Saab Viggen in scale 1:8. This model was powered years ago with a Ramtec DF . The kit is already scale built. It consists of a large number of fiberglass attachments. I have attached some pictures of the kit.

Data of the model Saab Viggen AJ-37 Einar Johnsson:

Wingspan: 130cm
Length: 190cm
EWD 1°


BF100 BF turbines
BVM hopper tank
Kevlar tank CMJETS
electr. landing gear

The model gets a scale retractable landing gear. A drawing of the complete landing gear will be made in the future. The landing gear will be driven by three JP Hobby ER-200 Alloy Electric Retract Motor. In advance it is necessary to see if the dimensions of the main landing gear fit in the wing.

Unfortunately all fuselage spars are missing from the model. These must be made in advance.

I traced the model in the CAD Rhino V5 drawing program. The fuselage is much narrower than the original drawing from Saab. Here the large inlet was enlarged in favor of the RamTEC DF.

to do list:

- draw a scale landing gear
- draw a turbine mount
- .....

...Continue Reading
Posted by Dirty Dee | Yesterday @ 11:59 PM | 1,494 Views
There are various techniques people have been using, but I want to share the workflows which have worked for 2 of my designs:

600mm Wingspan Lippisch P.13a

840mm Wingspan Pusher Prop Horten IX

What is Thin-Wall?
Simplest terms, this is a slicing method where the printer extrudes a single perimeter of material with zero infill. The walls of the part will in turn have the same thickness of the nozzle. This may vary as you can have a nozzle over-extrude (print thicker) or under-extrude (print thinner) based on parameters defined in the slicer software, or if you are using a "foaming" filament which has an expansion rate that is dependent of flow rate and nozzle temperature.

The other feature with thin wall is internal structures are designed in a manner that they are perceived as an "exterior surface" by the slicer software. These internal structures are then spaced in such a manner than when the single perimeter is printed, it fuses/welds itself to the adjacent surface.
Posted by old4570 | Yesterday @ 08:30 PM | 2,088 Views
Crashed MT flies again (6 min 2 sec)

A) Looks like my battery capacity down .. ( Zippy 350 2s )
B) Wing struts were broken .. So BBQ skewers and rubber bands .. That one little screw that holds the wing = Not enough !
C) Another stupid dog walker ...

Looks like I have to start my landing pattern when I have the one minute warning ...
Posted by Old_Pilot | Yesterday @ 06:51 PM | 2,420 Views
For RickC_RCAV8R
Posted by Alan 3D | Yesterday @ 06:44 PM | 2,382 Views
I wired the smoke Evac controls for a large Mall. I wired the detectors, control panel, actuators and the relays that turns massive fans on all over the top of the building for smoke Evac. The Smoke Evac is designed for two things. To help keep people in the building from getting asphyxiated from smoke and protect the merchandise as well as reduce smoke damage to the rest of the building.

For those insisting on keeping
LIPO batteries inside, there is an option for a smoke Evac system which you can make. Basically it's blowing the smoke out of the containment box bunker to outside preventing smoke damage inside. The air that goes into the box and blown/ sucked out can come from outside or inside.

Post number 10 on link below for Smokey vac diagram.
Posted by Joaquin DP | Yesterday @ 05:05 PM | 2,577 Views
So i recently bought a new Aeroscout S 2 and after a few initial flights the plane started making constant buzzing noises coming from the front end of the plane (under the battery). I also have very limited movement of the rudder and elevator, and no movement of the ailerons. Is there anything i could be doing wrong and is there any way to fix this? The noise is much louder at first and then quietens down after a few seconds and it also seems to change when I move the sticks and trim. Is there any way to stop this noise as well as improve my control of the other parts of the plane? Attached is a link to a video of the noise
Posted by Alan 3D | Yesterday @ 03:05 PM | 2,940 Views
Most of my lipos of many sizes are kept in Tin Cans Outside. Why because these are a potential fire hazard. A few of my batteries are stored in square tins with covers. My largest batteries are in drywall lined tool boxes and Ammo Cans each battery partitioned from one another. Plenty of holes for venting if a fire was to occur. A sealed container will make any lipo fire more intense. Maybe even explode. No known container will contain a lipo fire, especially the smoke which can be lethal. It has to be vented.

The majority of the Tin Cans I use come from food. The largest being the Cracker Can where you can put 3 or 4 other Cans inside that large Can. Even room at top if you wanted to put in something like sandbags over lipos. Or room for something else.

There are many sizes and you probably throw the stuff away everyday. Some of the stuff you don't have to do anything with it. Just put your battery in the Can or if you want to cover then you can use a second Can or a tuna fish Can as a lid which often you'll have to add something to the lid to make it fit on firmly if that is what you want but in most cases that's not what I do.
All most all of my can lids are not firmly stuck together and can easily vent preferably upward but not totally necessary. They are usually in another container or pan to help the Cans stay together and in one position which is usually upright but again not necessary. You can lay the Cans down also inside another container preferably...Continue Reading
Posted by VicT | Yesterday @ 10:14 AM | 3,367 Views
The Arrows Marlin comes with no receiver and I chose the AR637T for it’s Forward Programming features, Telemetry, and AS3X /SAFE gyro features. I replaced the stock 40 A ESC with an Avian 45 A ESC for it’s advanced telemetry, ease of programming, and for reverse thrust. With a SMART 2200 4S the lipo sends info to the ESC then to the RX and then to the NX8 transmitter.

I have been using spoilerons on all of my models using the DX9 and NX8. However with flaps the DX9 requires the more complex sailplane type program. It can be done but the NX8 is so much easier because of the 2 aileron, 1 flap choice in the Airplane type program. In the Flap System menu (see pic) there are 3 columns: Flap, Elev, and Crow. I have assigned FM (transmitter Flight Modes) to various phases of flight.

I plug the right aileron into chan 2 and the left aileron into chan 6. The roll gyro levels the Marlin with just the right aileron and needs no adjustment in the gain menu. I use the default gains for all 3 axis and do not set up a switch or dial to adjust gains. Likewise I have been using the default angle limits for aileron, elevator, and rudder and the Marlin reacts normally. I am using 50% aileron to rudder mix for all phases of flight except for B2 Manual Mode where I want axial rolls without any rudder mixing.

Flight Modes are set up on the B, D, and Throttle Switch. B0 is SAFE, B1 is Circle Mode, and B2 is Manual Mode. The majority of my flying is in the B0 SAFE...Continue Reading
Posted by ARGliding | Yesterday @ 08:11 AM | 3,690 Views
Very Budget RC Bomb Drop (0 min 19 sec)

Posted by Raoul Mitgong | Jan 25, 2022 @ 09:20 PM | 4,533 Views
It's amazing that all logic with regard to the functioning of the world and the outcomes of its events continues to be thrown out the window amidst the pandemic.

Otherwise intelligent people have bought into the trope that "if just all the people were vaccinated ( "X" times) and wore masks inside and outside of their homes that the covid issue would go away.

Here is stuff that "Experts" have said and that has been proven:

1. Vaccinated people still get covid-in fact- most people with covid at this time are already double vaccinated.
2. A vaccinated person with covid can still spread the disease.
3. Vaccines MAY help people with covid to not have serious symptoms.

Give the above facts and occurences how on earth is this lame vaccine supposed to stop Covid?????

If the polio vaccine were as bad as the covid vaccine 90% of Americans would have been at least affected by polio, today.
Posted by Old_Pilot | Jan 25, 2022 @ 05:38 PM | 4,984 Views
Well POOP !.....Just spent the last hour looking through 1130 Sport C/L plans on OuterZone, hoping to find something that I might want to convert to R/C....Pretty much all the stunters look the same, as do the combat wings.....I converted the Altagerra several years ago, and although it's a good looking and great flying airplane, I've built her twice.....So I wanted something different careful what you wish for...I drew this one up in 2018 for a Balsa Builders Conversion Contest on RC Groups, until the moderator changed the contest rules to include anything that was already in the primary build I backed out and never built her....55" 1911 Caudron Racer, complete with a 3-cylinder Anzani.....I know, I know....I've lost my mind
Posted by kopterheld | Jan 25, 2022 @ 02:09 PM | 5,122 Views

DarwinFPV Baby Ape is a 3 inch freestyle quad with 1104 4300KV motors for 2-3S battery. 73g, F4 FC 15A ESC's BL_S, Darwin700TVL Camera, the Pro Version is with CADDX ANT Camera. I would only take the Pro version because of the better Caddx ANT camera.

Video EN subtitle -
DarwinFPV Baby Ape Pro der billigster 3 Zoll Freestyle FPV Quad (5 min 18 sec)

Connection of EP1 ELRS receiver to UART1
The Happymodel EP1 is soldered as shown in the photo. Telemetry should be off otherwise the VTX will switch to B1. No solution in sight yet. There are no problems with a Frsky XM+ receiver or other SBUS receiver.

DarwinFPV Baby - Code: BGDARWIN10 -
DarwinFPV Baby frame - Code: BGRCPARTS8 -
DarwinFPV F4 12A 3S AIO -
BlueJay ESC FW -
BetaFPV ELRS Micro TX -
Eachine TX16S -
Happymodel ELRS EP1 -

Kopterheld Coupons:

My equipment:
DJI FPV Goggles V2 -
Fatshark Dominator HDO2 -
ImmersionRC RapidFIRE -
Radiomaster TX16S -
CADDX Ratel 2 -

Youtube –
Blog –
Instagram -
Twitter -
Posted by rickp | Jan 25, 2022 @ 09:00 AM | 5,635 Views
The queue is relocated here to unclutter the User-Built Models for PhoenixRC thread.
Models are grouped as in the index, and then alphabetically. This is not the build order.
And clearly I'll not build all of these - I just add interesting aircraft as I stumble upon them.
Which gives me a nice menu to choose from when it's time for a new model.
Models in bold text are relatively near term.


- Aerion AS2
- Aeronca C3
- Bleriot III
- Caudron C.630 Simoun
- Cessna T-50
- Davis D-1K
- dh.60 Moth
- dh.86 Express
- DuraFly Micro Tundra
- Einzpfeil EDF
- EzFly Icon
- Farman F.60 Goliath
- FliteTest Commuter
- FMS Mini-Ranger
- L-410_Turbolet
- Marlin 64mm EDF
- Marquart MA-5 Charger (Red Lion)
- Mooney M18 Mite
- MPX FunRacer
- MPX Challenger Bipe
- Navigator Seaplane
- Nicholas Beasley NB-3
- NASA P-3 Orion
- Piaggio Avianti
- Piaggio P.7
- PilotRC J-10
- Pinkus Extra Foamie
- Playboy Leisure
- Savoia-Marchetti_S.56 Amphib.
- Shock Cub STOL
- Smith Miniplane Bipe
- Steen Skybolt Bipe
- Stratolaunch
- Supermarine S.6B Floatplane
- Super Pearl 222-E
- Ultrix 600mm
- WOT Bipe

- Airco DH.4
- Breguet 14
- Gotha G.V
- Halberstadt D.II
- Morane-Saulnier N
- Nieuport 11
- Salmson 2
- Sopwith Dolphin
- Sopwith TF2 Salamander

- Airspeed Oxford
- Blackburn Skua
- Bristol Blenheim
- Boulton Paul Defiant
- Bucker Bv-138 Seaplane
- Cant 506 Seaplane
- Caproni 124 Seaplane
- Curtiss SB2C Helldiver
- Curtiss Wright Demon
- ...Continue Reading
Posted by High_Start | Jan 25, 2022 @ 08:32 AM | 5,634 Views
Hello, I΄ve decided I wanted to do more with my youtube channel.
Here I post footage of my build logs planes and more.
If you are interested in my rc videos, here is the link:
Posted by kopterheld | Jan 25, 2022 @ 04:31 AM | 6,018 Views
URUAV RX5808 EVO the cheapest and best FPV Module - 48 Channel FPV Module for Fatshark or DJI FPV Goggles, an analog module with OSD adjustment in the goggles, better than Eachine Pro58, same as Foxeer Wildfire.

Review (EN subtitle) -
URUAV RX5808 EVO günstiges Modul für Fatshark und analog DJI FPV Brille (2 min 27 sec)

DJI RX PORT 3.0+ -
BDI adapter -
TBS Fusion -
ETHIX Strap HD -
Alien 2200mAh -
RapidFIRE -
DJI FPV Goggles -

Kopterheld Coupons:

Youtube –
Blog –
RCGroups –
Telegram -
Instagram -
Twitter -
Posted by kopterheld | Jan 25, 2022 @ 04:28 AM | 6,035 Views
ExpressLRS 2.1 is here and you can use the BetaFPV ELRS Micro TX module with the 2.1 firmware. The basic settings can now be set with the joystick on the back of the OLED display. The Namimno Flash V2 also works with ELRS 2.1 and the OLED display with joystick function.

My video (EN subtitle)
BetaFPV ELRS TX Modul 1W mit ExpressLRS 2.1 (1 min 36 sec)

ELRS Micro TX 1W -
ELRS Nano TX -
Amazon -

LiteRadio 3 -
Meteor65 Pro -
Amazon -

Meteor75 -
Amazon -

Meteor85 -
Amazon -

ELRS Lite RX -

Micro Nano Adapter -
Eachine TX16S -

Kopterheld Coupons:

Youtube –
Blog –
RCGroups –
Telegram -
Instagram -
Twitter -