Posted by TBY | Today @ 05:38 AM | 159 Views
Hi
FRSKY Archer SR8 PRO has an External Voltage measurement via AIN2. The manual describes this as:
Voltage Measurement Range via AIN2 (External device): 0-36V (Battery Voltage Division Ratio: 1:10).
No other explanations for this feature.
Ill write down my experience with this option:

The AI2, green cable, will go to the external battery +
The -, black cable, will go to the external battery -

Be aware that this receiver accepts 0-36V. It has its own voltage divider inside. Other receivers might accept lower voltage!!!!
The other issue is the Voltage Division Ratio. The manual declares 1:10 ratio. Setting this sensor up with 1:10 ratio gave me unreasonable outcome.
I have used two batteries (3s and 4s) and a multimeter and started to play with the values. For this receiver, the best values were a Ratio of 35 and an offset of 0.57V. Got a good voltage reading for the two measurement points that I used.
My colleague, Lior Zahavi - i3dm, suggested that the difference (ratio) is because Im using OpenTX.

Hope that this small how to helps.

Please feel free to add your division ratio values and/or comment on this issue.

TNX
Posted by Gary Chen | Today @ 02:57 AM | 337 Views
YANGDA Sky Whale Heavy Lift Electric VTOL Drone Endurance Test: 90 minutes with 10KG Payload (3 min 51 sec)

YANGDA Sky whale heavy-lift electric VTOL drone: specially developed for LiDAR mapping and long-range cargo delivery & transport. It provides stunning heavy-lift and long-endurance performance: 120 minutes with 6.5kg payload and 90 minutes with 10kg payload.
Posted by saucerguy | Today @ 02:20 AM | 337 Views
TRUMP 2024!

Donald Trump makes speech at CPAC | ABC News (1 hr 33 min 26 sec)

Posted by wisatatugu | Yesterday @ 09:47 PM | 1,081 Views
Tugu Wisata adalah jasa sewa mobil Jogja dan paket wisata Jogja. Kami mempertemukan antara kualitas kendaraan sewa dan ragam pelayanan yang prima dengan harga yang kompetitif. Tugu Wisata menghadirkan beragam jenis kendaraan yang siap mengantar perjalanan tugas dan liburan keluarga anda. Melengkapi semua kebutuhan pelanggan perorangan maupun perusahaan. Dengan harga yang bersahabat. Tugu Wisata juga menyediakan berbagai paket wisata yang dapat anda nikmati untuk mengisi waktu liburan anda maupun keluarga, dengan harga yang terjangkau dan fasilitas yang lengkap. Tersedia beragam jenis paket wisata seperti paket wisata sehari, 2 hari 1 malam, 3 hari 2 malam, 4 hari 3 malam, 5 hari 4 malam, dan paket honeymoon jogja.
Posted by DoubleEagle | Yesterday @ 09:44 PM | 1,091 Views
RC Volvo digger | Double E Hobby E111 (2 min 40 sec)


Double E Hobby team is proud to announce Volvo digger series models.
We offer hydraulic and electric units with a pocket size prices.
Business enquires: [email protected]
Posted by VicT | Yesterday @ 08:27 PM | 1,351 Views
Ive had loss of pitch control from a single elevator servo failure, and pushrod system failures so I like to add redundancy when it is convenient. The Heron T tail is an easy compartment to add a second elevator servo. However the single elevator pushrod must be replaced with a left and right elevator pushrod and they should not touch each other. The other challenge is connecting them to the elevator with out the white plastic tube fixture. For high reliable servos I chose the Bluebird type. They are expensive but are metal gear and digital. Having them on the same signal with a Y connection will make it simple with a 6 channel receiver such as the AR 637T with SAFE. In case of a single servo lock up the other servo will provide pitch control to compensate for the other servo and stuck elevator. A preflight check will be easy to spot a failed single elevator servo failure as well as a post flight check.

The supplied 2-56 clevis and rod is OK for a single servo but I wanted a spring loaded connection so I soldered the .038 music wire rods to them for a flexible connection. Two servos and the pushrods weigh 15 grams and with a heavier motor this added weight will compensate. With a lightweight Heron build the fuselage plastic tube can be eliminated and clear tape skin can provide torsional strength. See pics
Posted by Jack Crossfire | Yesterday @ 07:42 PM | 1,449 Views
A 19 mile drive brings out the defects. The bumpers fractured between the laminations. So flexing can't be perpendicular to the laminations. One does not simply rotate the laminations. Thus began the 1st attempt to adhere TPU. E6000 was hopeless. There was hope for CA with a tongue & groove.


It was the 1st time anything went that far on a single battery. The power usage was 216mAh/mile.
Posted by gke | Yesterday @ 06:04 PM | 1,716 Views
This is my first effort at building a 3D printed aircraft and, as there are quite few YT build and flight videos out there, it will be mainly photos.

Main change is using a forward motor "carbon" bulkhead as in my experience rear mounting a motor leads to increased out of balance vibration. The screw holes for the servos also have too little material around them so the servos have two turns of masking tape around them and are glued in with white glue. Servos can be replaced easily by slicing the masking tape.

Apart from sticking fingers to the aircraft or each other there were no particular difficulties with the build.

Motor Blue KDA20-22L, 10x6 Aeronaut folder. A 2200mAH 3S pack was needed to get the published CG. AUW 816gm so not light but then a little heavy is OK on the slopes....Continue Reading
Posted by DismayingObservation | Yesterday @ 05:47 PM | 1,850 Views
Foam builders, rejoice!

Just when you thought all was lost and foam aircraft projects would forever be limited to paper-backed poster board from a dollar store or blue foam insulation board , a resourceful inventor and modeler by the name of Greg Tanous has done the unimaginable.

Through his company, Greg Tanous Lasering and website, rcdepron.com, genuine German-made Depron is once again available in the US! Tanous is the inventor of 1:1 scale RC flying superheroes, a scaled-down RTF toy version from EB Brands depicting Marvel's Iron Man and the Playmates Super G free flight toy wingsuits which I reviewed elsewhere.

Greg took it upon himself to contact the manufacturer to inquire about shipping a container of Depron to his new home in Lorena, Texas. All was not as easy as it seemed. Communications between the factory and a shipper proved difficult; even his choice of customs agent was denied. Shipping from the docks required a specific type of trucking company. Greg called the ordeal "tougher than imagined times 10."

What's more, Greg shipped, on his own initiative, several sheets of 3mm Depron to me on his dime which in turn gave me a really cool idea.

Some time ago, I'd purchased plans for a micro EDF model of Batman's Batwing jet from foamconceptjets.com. That's because I was given a crashed E-flite UMX F-16 from a local hobby shop about to close its doors. The model had been sold to an inexperienced pilot who insisted on buying the thing.....Continue Reading
Posted by microwaves | Yesterday @ 05:29 PM | 1,796 Views
A visual flight control analyzer is included for comments.
You can view all control functions with settings adjustable to match any fixed wing airplane.
I have set up many planes with the device.
Posted by magnetman | Yesterday @ 02:40 PM | 2,277 Views
Couple of pics of my SR 71. Twin 12 blade fans on 3s and AR636 Rx. Weak original U/C replaced with Eflite retracts. As yet unflown.
Posted by 5546dug | Yesterday @ 01:48 PM | 2,586 Views
Nice and fast addition to the fleet!
Hoping it will keep the jet urge at bay till a spring reunion!

Not sure about the pylon racing but just a 3.5 minute terror and blast.
Posted by DutchRC | Yesterday @ 12:04 PM | 2,956 Views
Halloa people,

Simple short video this time! I recently did a show & tell on this HBX car
and I'll be posting up some short running / test video's of it...

This time we'll have a look how the car holds it's own OFFroad


HBX 18859 Rampage! 1/18th scale Monster Truck - Offroad drivin :D (3 min 24 sec)

Posted by japim | Yesterday @ 09:26 AM | 3,348 Views
Another crazy idea.

German conceptual bomber Blohm und Voss P170. 3D Printed of course

Scale 1:12, 1.3m span, ~1 m long. Expected weight 2kg. 3D printed retracts. 4S-6S power setup.
I am not sure about the rudder function yet. Vase mode friendly + carbon/steel reinforcing.

I am thinking about another type of split.
Keep the wing in one piece, but split the center fuse in half using Lockey BD5 Fuse sections splitting mechanism.
Posted by GroundControlRC | Yesterday @ 09:15 AM | 3,363 Views
Aircraft Setup File - Converted EPP Chuck Glider 480mm Wingspan (Pusher Configuration)
https://drive.google.com/file/d/1ZVu...ew?usp=sharing

This Setup works great & the performance of this Converted Chuck Glider is Awesome!

Get the Glider Here: 48cm Big Size Hand Launch Throwing Aircraft Airplane Glider DIY Inertial Foam EPP
https://www.banggood.com/48cm-Big-Si...47791920140372

Banggood GCRC
https://www.banggood.com/custlink/GmDmQ1nVkO

Here is a link to the Playlist for this RC Converted Chuck Glider:
https://www.youtube.com/playlist?lis...OknBblSrwuqP2T

Here are links to all the components we used in this project:

48cm Big Size Hand Launch Throwing Aircraft Airplane Glider DIY Inertial Foam EPP
https://www.banggood.com/48cm-Big-Si...47791920140372

Racerstar Racing Edition 1104 BR1104 7000KV 1-2S Brushless Motor (The DYS 1104 is no longer available)
https://www.banggood.com/Racerstar-R...47791920140372

iFlight Nazgul T3020 3020 3X2 3 Inch 2-Blade (Eachine 3020 Prop is no longer available)
https://www.banggood.com/IFlight-Naz...47791920140372

2.4G 4CH Micro Low Voltage DSM2 DSMX Compatible Receiver Built-in Brushed ESC
https://www.banggood.com/2_4G-4CH-Mi...47791920140372

3Pcs URUAV 7.4V 380mAh 50C/100C 2S Lipo Battery JST Plug (The original LIPO is no longer available)
https://www.banggood.com/3Pcs-URUAV-...47791920140372

HobbyKing HK-5320S Ultra-Micro Digital Servo 0.075kg / 0.09sec / 1.7g
https://hobbyking.com/en_us/hk-5320-...asc=5357157305

RW.RC 10A Brushless ESC 5V1A BEC 2S 3S (DYS 7A OPTO is no longer available)
https://www.banggood.com/RW_RC-10A-B...47791920140372

You Can Help Support Us By Using Our Affiliate Links To The Products above. A small commission (At No Cost To You) helps us buy more items to review.

#GroundControlRC #GlueAndFly #GFS #GCRC #ScratchBuildPlanes #ChuckGlider #ConvertedRCChuckGlider #48cmEPPChuckGlider #EPPChuckGlider


See you in the Air!

Build, Fly, Crash, Repair, Rinse & Repeat!

Ground Control RC Glue & Fly Series Scratch-Build Planes

See Us On Youtube | Patreon | RCGroups

https://www.youtube.com/c/GroundControlRC
https://www.patreon.com/groundcontrolrc
https://www.rcgroups.com/forums/member.php?u=754189
Posted by Risto | Yesterday @ 07:22 AM | 3,721 Views
*Under construction since February 28th, 2021. If you are interested in this topic, please re-visit this page in a week or two*