Posted by fastmax | Today @ 04:49 PM | 71 Views
HTRC H4AC Duo 2s-4s Dual Output LiPo Balance Charger Review

Are you looking for an affordable, compact, and easy to use LiPo balance charger, capable of charging two batteries at once? If so then this little H4AC might be just what you want.

This charger is about as easy to use as they come. Simply plug a battery into channel 1, or channel 2, or both, plug your balance connector into the appropriate port, and hit the start button. The charger will then begin charging your battery, or batteries, and the display will show the voltage of each individual cell being charged. It's as simple as that.

Each channel has a fixed output of 2A, so the charger is best suited for 1100-2400mah 2s-4s batteries. I have used it several times now on my Tattu 75c 1050mah 4s batteries, and it has been working flawlessly. Cells have been consistently finishing within .01v of each other on the chargers display, as well as when I use my cell checker/balancer which has always been accurate for me.

The fact that this little guy has a built in power supply makes it perfect for those that don't already own a 12v DC power supply. It is also quite small, so it takes up very little desktop, or bench space, and is super easy to travel with. You can see in the picture below just how small it is next to one of my 65mm Tiny Whoop Drones. Priced under $30 and Amazon Prime eligible, this is an excellent option for anyone on a tight budget, or as a backup/travel charger.

Don't hesitate to ask any questions you might have. Happy RC'ing!!
Posted by hiplainsdrifter | Today @ 02:23 PM | 130 Views
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Posted by GroundControlRC | Today @ 11:24 AM | 218 Views
Tiny Whoop Unintended Durability Test- Session 1



Here is a link to the Video:
https://www.youtube.com/watch?v=U8Pkt6Oc49Q

Well, flying inside is a place that is obstacle rich!
Trying to increase my speed and aggressiveness was not always in my favor ;-)
I give you my Tiny Whoop Unintended Durability Test Session 1 - It passed the test ;-)

See Session 2 on our Patreon Site: https://www.patreon.com/groundcontrolrc

Here are links to all Tiny Whoop, Upgrade Components, etc:

Eachine E011 Mini 2.4G Headless Mode With 60000RPM 716 Coreless Motor Toy Brick RC Drone Quadcopter
https://www.banggood.com/Eachine-E01...47791920140372

Upgrade Props: 20PCS KINGKONG/LDARC 31mm 3-Blade Propellers Sets
https://www.banggood.com/10PCS-Kingk...47791920140372

Upgrade Motors: 4x CM-03 716 Insane 19000KV Coreless Brushed Motor B03 pro upgrade e011 7mm motor
http://www.boldclash.com/4x-boldclas...otor-p153.html

Eachine Beecore V1 F3_EVO_Brushed ACRO Flight Control Board
https://www.banggood.com/Beecore-F3_...47791920140372

Eachine Beecore V2 F3_EVO_Brushed ACRO Flight Control Board
https://www.banggood.com/Eachine-Bee...47791920140372

Eachine E011 RC Quadcopter Spare Parts Lower Body Shell E011-07
https://www.banggood.com/Eachine-E01...47791920140372

4Pcs Eachine E011 Eachine E011C RC Quadcopter Spare Parts Propeller Blade CW CCW E011-06
https://www.banggood.com/4Pcs-Eachin...47791920140372

5PCS Eachine E010 E010C E011 E011C E013 3.7V 260MAH 45C Lipo Battery USB Charger Sets
https://www.banggood.com/5PCS-Eachin...47791920140372

CM275T 5.8G 25mW 48CH NTSC/PAL Mini VTX 600TVL FPV Camera for DIY Micro FPV Racer
https://www.banggood.com/CM275T-5_8G...47791920140372


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

Happy Flying!


See Us On Youtube | Patreon | RCGroups | Facebook

https://www.youtube.com/c/GroundControlRC
https://www.patreon.com/groundcontrolrc
https://www.rcgroups.com/forums/member.php?u=754189
https://www.facebook.com/pg/Ground-C...3132721/posts/
Posted by VicT | Today @ 10:29 AM | 212 Views
On my last flight I found the throttle setting where level flight (SAFE On) exists with full landing flaps. You read on the top line of your DX TX display. My setting is 46 percent. After landing I opened up the throttle curve program and turned it On and set point 3 at 46 percent. Then I set point 2 a little below at 41 and point 4 at 54 percent. This gives a flatter throttle slope to allow fine tuning when I turn onto base and final approach. Now I can reduce throttle to a nice glide slope setting and just use rudder to maintain localizer/azimuth/runway centerline. It’s no Cat 3 but much better than prehistoric RC flying.
Posted by TMac54 | Today @ 07:30 AM | 292 Views
In my last post I mentioned my interest in building a Micro 2.5 inch quad primarily 2S (meeting MultiGP MIcro class specifications) with some 3S.
Below is a video of how I went about choosing each of the components to include the options i was looking at. It includes the parameters for each component I think are important, options for each component, components specifications compared side-by-side with each other and my choice for each component. This stuff may help out others fairly new to builds also.
Micro FPV 2.5 Inch Drone Build (19 min 54 sec)

Posted by eldorado1956 | Today @ 07:29 AM | 309 Views
This is the second attempt to build these engines , Gave up twice and finally gathered enough info to make all the parts and cast the molds. I finally made enough parts to make about five engines...Continue Reading
Posted by mperaltaoz | Today @ 07:00 AM | 298 Views
After losing my other spitty to an electronics failure, I bit the bullet and built another one immediately after
This one has a few mods that made it better than her deceased sibling...
- Shorter and lighter tail for a better CG location without the need of ballast
- Much better retract mounts and wing doublers for reinforcing the mount area
- Better colour contrast for camouflage paint finish

Maiden was a huge success and I've been flying it regularly since then.
Awesome plane!

Spitfire Mk IX V2 scratch build (3 min 8 sec)

Posted by scousethief | Today @ 06:17 AM | 333 Views
https://www.banggood.com/ZOHD-Dart-XL-Extreme-FPV-Aircraft-RC-Airplane-PNP-p-1365551.html



PRE-ORDER has begun , i WILL be reviewing this as soon as it arrives

ZOHD Dart XL Extreme FPV Aircraft RC Airplane PNP

Description:
Brand Name: ZOHD
Item Name: ZOHD Dart XL “Extreme”

MADE FOR YOU:

At ZOHD we take very seriously the feedback from our fans and friends around the world. Dart XL Extreme was the answer from the company to all of those pilots who loved their ZOHD Dart but wanted something bigger.

Instead of going the easy way and just scale up our highly acclaimed Dart, we raised the bar for ourselves even higher: Let’s create the best swept-forward FPV wing ever made, and let’s do it right now!

Featuring and incredible set of high quality and ORIGINAL innovations, we intended to give you the ultimate FPV wing for mid and long range. Performance and portability where always on the table, but we didn’t stop there: without cutting any corners we went straight on for environmentally friendly materials 100% biodegradable, metal gear servos, high quality power plant, protection for leading edges and skids, vortex generators, revolutionary multi-cam hard nose and much, much more. Check below the full list of features and specs. This is it! ZOHD Dart XL Extreme is ready to hit the skies around the world, and this is just the beginning… join us in this incredible adventure.

Note: This plane will come out soon, and we will update the descriptions then.

Package Included:
1x ZOHD Dart XL “Extreme” PNP
Posted by rogerjiangcf | Today @ 05:52 AM | 320 Views
Background info:
I have recently bought nolimitdronez mod software trying to remove the maximum height limit of my Mavic. Downgraded from V01.04.0400 to V01.03.0900 in order to get the height limit removed. Planning to test the limits in the countryside of course. However, the firmware of the controller is on V01.04.0400 and has not been touched. I'm was using the MODDED DJI GO APP (For the first time). https://sparkpilots.com/threads/dji-...r-4-1-15.3841/

Before crash:
I was flying my Mavic on a grass field 100 meters away from a tall building to take a look. Everything was working normally and suddenly the motor stopped working or a prop flew off or something. The aircraft started spiraling down, I tried to restart the motors with success but according to the log file my Mavic fell even faster after the attempted motor restart.

My Suspection:
I either lost a prop in flight or it was the MOD that caused it. However, I would like to know the exact cause.
I have checked the log file and there are quite a few errors. Such as MOTOR IDLE, GPS POSITION NO MATCH, there was also missing data for 16s right before the motor went out.


Note: NO ONE WAS INJURIED! My Mavic crashed on a grass field and there was no one around(Except for me). Fell 2 meters away from me. Definitely scared the crap out of me

Zip file attached includes the DAT log file, TXT log file, and xlsx file converted from the TXT log file.

Thanks in advance for the community's help!
Posted by Hobby WOW | Today @ 04:46 AM | 360 Views
Unboxing of the SimToo Fairy Air from Hobbywow, One this
which did not mention in the video, is the drone has a built-in dvr recorder on the side of the drone. So you can use a 32gb sd card.

Simtoo Fairy Mini Foldable Brushless Quadcopter with Transmitter WifI FPV 1080P Camera Optical Flow Positioning GPS

Simtoo Fairy Mini Foldable Brushless Quadcopter (6 min 13 sec)

Posted by lawrence4 | Yesterday @ 10:08 PM | 510 Views
66% Vertigo on Float Maiden Flight (1 min 41 sec)


Wingspan 600mm
Weight 181g
Battery:2S 350mAh 35C. 4mins.
Motor:2204 1400KV,
ESC:10A,
Propeller:GWS EP-7035,
Servo:5g x 3,
Receiver: Frsky 4ch....Continue Reading
Posted by VicT | Yesterday @ 10:04 PM | 489 Views
I like to stop the prop while gliding especially if I use a folding prop. Here is a link to the ESC Instructions.
https://www.horizonhobby.com/pdf/EFL...CInstSheet.pdf

I was able to get to the two fast tones programming step but no further. I called Horizon Tech and they said the Cirrus ESC can not be programmed. I could get a Maule 40 amp ESC for $30 or a V900 60 amp ESC for $60. Both are programmable.
I ordered an Aerostar 60 amp RVS ESC. I use it on my Maule with floats that has flaps on channel 6 and reverse on channel 5 using the 3 position E switch. The Aerostar is easy to program for prop brake. You have to have the prop stopped in order to have the ESC reverse the motor/prop direction. Reverse should be fun on the Cirrus for stopping and backing up on the runway.
Posted by VicT | Yesterday @ 09:24 PM | 510 Views
I have many places where I fly RC and I have to carry the model and TX out to the runway or takeoff spot. For models like the high wing Apprentice, Valiant, Beaver, or Maule I use a retractable wire handle to lift and carry the model. The handle can be used to hang the model from a ceiling. The low wing Cirrus is different and so I use 65 b Spiderwire fishing line attached to the fuselage. I wrap the line with a clove hitch, put a drop of CA on the knot/toothpick and sink the tooth pick into the foam fuselage. When dry I test the pull strength of the string and joint. See...Continue Reading
Posted by JohnVH | Yesterday @ 04:52 PM | 643 Views
NEW Durafly Bonanza maiden and aerobatics!

Durafly Bonanza 950mm from Hobbyking FLYING! (5 min 31 sec)

Build video
Durafly Bonanza 950mm from Hobbyking Unboxing and Build (18 min 51 sec)
...Continue Reading
Posted by Jack Crossfire | Yesterday @ 03:59 PM | 602 Views
Can a PASSENGER land a PLANE? Presented by CAPTAIN JOE (15 min 51 sec)



After months of thinking about the problem, it became clear the passenger should fly manually instead of trying to reconfigure the autopilot as depicted. We're all familiar with the basic airplane controls, have played flight simulators, & can drive cars. Getting the plane to point in a certain heading & controlling speed isn't very hard.


The autopilot is a horribly complex addition. Most of the radio time is spent explaining how to use the autopilot & looking for the controls. She had to lower flaps, lower gear, & reverse thrust, despite the autolanding being engaged. A 2nd passenger could have managed the flaps & gear.
To the lay lion, manually flying would greatly increase the chances of success, but Caption Joe based the video on no doubt what the FAA recommends.
Posted by SPH1957 | Yesterday @ 02:53 PM | 639 Views
I thought I would document my experiences with my TarotRC equipment and the drones I fly.

Firstly this is what I have:

2 sets of ZYX-M
2 sets of ZYX OSD
2 sets of TL301 GoPro carrying gimbal
1 set of ZYX BD Bluetooth Data Link
Tarot 680 Ironman hecacopter
500 size quad

FrSky QX7
Fry sky receivers as follows.

WIP
Posted by blitzen | Yesterday @ 12:50 PM | 716 Views
I have improved my polystyrene foam cutter. The cost to build was about $10. Using household tools, a drill, soldering iron and glue gun it was complete in a couple of hours. The size accommodates polystyrene foam up to 1" thick. It is portable, powered by 2 alkaline D cell batteries. 3 inches of very thin steel wire is heated by resistance to just beyond the temperature polystyrene transitions. Polystyrene is safely cut in a ventilated area. The heat is minimized to avoid unhealthy fumes. As a result, cutting speed is more or less 9 inches per minute depending on the size and density of the PS. The cut is barely larger than the diameter of the resistance wire so detailed and accurately sized pieces and voids can be achieved. It also cuts thin molded PS (recycling symbol 6). The platform lifts off to change the batteries or resistance wire.
Resembling a pizza box, a 12" square frame made of 1.5" x .5" poplar with a .25" paper board top and bottom. The lumber was cut with a small hand saw. The top board is left unattached and small blocks are glued to the underside which keeps the top in position on the frame.
A light steel rod is bent at a right angle. One end of the rod is fitted into a hole in the frame and held with a set screw. The point of the screw tip is ground off. The arm is parallel to the surface at 2" above. The negative battery wire (24 AWG) is inconspicuously soldered to the rod using a heavy soldering iron. The resistance...Continue Reading
Posted by GroundControlRC | Yesterday @ 11:03 AM | 860 Views
RC Tip #18 - Bad Wiring Assemblies



Here is a link to the Video:
https://www.youtube.com/watch?v=l9g_1-JT0KY

I have ordered power connector pigtails, extension cables, servo wires, etc. and approx. 25% of those have had bad wiring assemblies.
What I mean by bad wiring assemblies is the wires in the connector are not in the proper order.
I have had to remove wires from these connectors and re-install them in the proper order.
Never assume that the wire assemblies are correct and always check before you use them.
I installed a servo pigtail into one of my receivers and shorted out the receiver because the power lead was installed where the signal wire should have been.
I didn't check before I used the wire assemlby and it cost me a receiver.

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

Happy Flying!


See Us On Youtube | Patreon | RCGroups | Facebook

https://www.youtube.com/c/GroundControlRC
https://www.patreon.com/groundcontrolrc
https://www.rcgroups.com/forums/member.php?u=754189
https://www.facebook.com/pg/Ground-C...3132721/posts/
Posted by basslord1124 | Yesterday @ 09:20 AM | 876 Views
Been wanting to add a nice somewhat large glider to my airplane arsenal. Something for those lazy/relaxing days. Found some plans for a Flitetest style glider (called Galaxy) through the Flitetest community pages. Currently have the fuselage and tail section built. Next big step is the wing which I am actually going to make as a 2 piece wing with a split in the middle so I can take it apart for transporting. The original design was a full single piece wing that used 3 sheets of foamboard.

Here is a video on the start of this journey in constructing this big glider.

Large foamboard glider build progress & introduction... Flitetest style glider (Galaxy) (6 min 49 sec)


And here is the original Flitetest article on the glider:
https://www.flitetest.com/articles/t...uuuuuge-glider