Posted by GroundControlRC | Today @ 09:58 PM | 5 Views


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

Actually, I think I'm performing these DustOff Flights before the dust even settles ;-)
Too much fun!
I wanted to switch out the 3020 Prop I've been using and install a 3025 Prop just to see if it's any faster ;-)
Like it's not already fast enough right?

Here is a link to the Control Surface Deflections I use:
https://www.youtube.com/watch?v=YyK7vQoA5Do

Here is a link to the Project Conclusion video:
https://www.youtube.com/watch?v=OilrzPsnKuk

Here is a link to the Updated Plans & Templates video:
https://www.youtube.com/watch?v=SOSQsFa0sKs

Here is a link to the Chuck Glider Conversion Playlist:
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

DYS BE1104 1104 Brushless Motor 5400KV 6500KV 7000KV 2-3S for 100 120 150 RC Drone FPV Racing Multi Rotor - 7000KV
https://www.banggood.com/DYS-BE1104-...47791920140372

2 Pairs Gemfan 3025 PC Propeller CW/CCW For 1104 Motor 120 150 160 RC Drone FPV Racing Multi Rotor
https://www.banggood.com/2-Pairs-Gem...47791920140372

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

EMAX Babyhawk 85mm FPV Racing Drone Spare Part 2S 7.4V 300mAh 35c Lipo
https://www.banggood.com/EMAX-Babyha...47791920140372

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

Turnigy MultiStar Race Spec 7A BLHeli-S ESC 1~2s (Opto)
https://hobbyking.com/en_us/blheli-s...asc=7727242802

Pololu Adjustable Step-Up/Step-Down Voltage Regulator S7V8A
https://www.pololu.com/product/2118

Turbowing 5.8G 48CH 25mw Transmitter 700TVL 120 Degree Wide Angle Wireless FPV Camera NTSC - Copper Antenna
https://www.banggood.com/5_8G-48CH-2...47791920140372


See you in the Air!

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

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 marksp | Today @ 08:59 PM | 25 Views
Decided to replace dead stick crash of my Valiant 30cc with the new Timber 110. Looks to be a higher performing newer design of a high wing bush plane that I can use most of my same components :-)

- VVRC40
- Hitec 5645MG ailerons/flaps/elevators
- Hitec 7956 rudder
- Tail dragger RC servo extensions
- Jeti EX R10 REX Assist
- Tech Aero IBEC
- Tru-turn 3” alum spinner
- XCub sprung gear
- XCub tail gear
- Dubru 6” tundra tires
- QuickFire fuel filter
Posted by Bill M - RC | Today @ 07:32 PM | 31 Views
Hi fellow rc pilots & rc enthusiasts

Skyzone SKY02X FPV Goggles review. This SKYZONE SKY02X 5.8Ghz 48CH Diversity FPV Goggles Support 2D/3D HDMI Head Tracking With Fan DVR Front Camera For RC Racing Drone review includes unboxing, overview, features, functions & tests. I also share this with other fpv rc pilots to get their impression and opinion of this Skyzone 02X FPV headset.

You can get these SKYZONE SKY02X 5.8Ghz 48CH Diversity FPV Goggles Support 2D/3D HDMI Head Tracking With Fan DVR Front Camera For RC Racing Drone here: http://bit.ly/2Zo8l7s

You can get the SKYZONE SKY02C 5.8Ghz 48CH Diversity FPV Goggles Support DVR HDMI With Head Tracker Fan For RC Racing Drone here: http://bit.ly/2PmXmam


Skyzone SKY02X FPV Goggles review. 2D 3D 5.8ghz Diversity FPV Goggles (23 min 44 sec)

Posted by CGordon | Today @ 03:41 PM | 76 Views
Remember those potholder looms for kids? It gave me an idea...

This is another application I have not seen - an all-carbon truss spar. Using wetted carbon tow (12K in this case), I wove a truss pattern though a set of brads. The idea (Pratt or Warren without verticals truss styles anyway) is to be able to slide ribs into a finished spar unit.

For fun I tried some different patterns with string (second photo). I notice you can take an extra round on the perimeter if you need more thickness.

In practice I found the tension tends to flatten the tow, and this isn't ideal since you'd like more of a round or square section. Despite this the test is very sturdy and certainly benefits from not having any glued joints.

I'm thinking about building a fuselage side like this for my 24" Telemaster. I could use my thickness sander to ensure a flat, uniform surface and make the carbon closer to a square profile.
Posted by Tazkiller85 | Today @ 05:08 AM | 255 Views
Yep Les Amis,
Multiprotocol Mix Music Party ! lol ... J'ai enfin reçu ma nouvelle Jumper T8SG V2 PLUS... J'étais déjà très content de ma V1 pour le multiprotocole et son faible encombrement, mais là, je suis aux anges grâce à la V2 PLUS. La finition globale est au rendez vous bien sur, mais l'ajout de Gimball Hall fait toute la différence au niveau du confort et de la précision du pilotage ! Après la V1 puis la V2, la V2 PLUS apporte vraiment quelque chose qui la rend plus sérieuse en face de la concurrence . Le Multiprotocole, les Gimball Hall, sa simplicité, les Voix/mp3 et sa finition carbone raviront certainement plus d'un pilote débutant ou initié. Bon Film à Tous et Félicitations aux GAGNANTS du concours

Jumper T8SG V.2 Plus Carbone - Review Test Astuces - Résultats Concours DJI ! (34 min 3 sec)


NOTATAZ : 18/20 Belle Evolution Mr Jumper !

- Si Vous voulez soutenir la chaîne avec un don : https://streamlabs.com/Tazkiller85

Les produits présentés sont visibles ici (en cliquant sur ces liens vous soutenez ma chaîne) Merci à vous :

- Jumper T8SG V2.0 Plus Carbon ( COUPON aff7off ) 100€ : http://bit.ly/33eUJui
- Batterie 2S pour Jumper T8SG : https://goo.gl/eMWDNH
- Jumper T8SG accessoires : http://bit.ly/2NsrOgQ
- Antenne longue : http://bit.ly/33UTbGb
- Adaptateur Antenne longue : http://bit.ly/2Nvtfv0
- Lien vers Installation Module VOIX : http://bit.ly/2NrYTJS
- Vidéo Set Up Jumper : http://bit.ly/2L8WRvz
- Notice : http://...Continue Reading
Posted by Doom 3D | Today @ 04:20 AM | 229 Views
The Twins have arrived now just to see what they will fly in the up coming months. I am impressed before I even got them out of the box
Posted by VicT | Yesterday @ 10:46 PM | 382 Views
L APES (Low Altitude Parachute Extraction System ) is used by USAF C130 crews to deliver palletized cargo such as jeeps and other supplies. The EC 1500 could be configured to do the same maneuver using a 3 position switch. My DX9 3 position switch is automatically set up for ramp/door closed (position 0), ramp level (position 1) and ramp 20 degrees down ( position 2). A drogue parachute could be deployed using position 1 and could provide tension on a foam block inside the fuselage. Position 2 could release a loop of string similar to a sailplane/tow plane release system. The ramp servo or a Servo from a Y cable could pull the pin to release the loop of string.

Once the system is verified and validated other cargo could be made. A 30 foot banner could be towed and released 5 ft above the runway or 30 ft of ping pong balls tied together. The system should be as light as possible in case of an emergency such as a fouled chute or stuck cargo.
Posted by CGordon | Yesterday @ 09:28 PM | 400 Views
I'm surprised I haven't seen this before...using carbon fiber rods in a built-up spar. In this case, I used the very smallest rod I have (.020") on a 24" wing, along with depron for webs.

With no webs, it is almost uselessly floppy. Instead of using balsa, I opted for depron just to see what would happen. Surprisingly it is quite stiff within the normal parameters. At the edge of the limit, it has interesting characteristics! You can see in the video how the buckling behaves. I have no doubt the bottom spar (same size) is barely breaking a sweat. The cracking you hear is just the top of one of the ribs...still planning to fly with this thing!

I can see replacing the web with balsa...but perhaps depron would still be perfect for the outer half of the wing.

Construction is not hard. To get a consistent hole distance I added little bits of sharped rod to the rib template. It cuts the holes and also keeps the balsa from sliding while cutting. The ribs are then loaded on to the spars shish-kabob style. The webs are then loaded and glued to the rods.

This wing comes out at 6.7g and will be covered with tissue.

Carbon rod spar idea (0 min 20 sec)

Posted by crteensy | Yesterday @ 04:11 PM | 486 Views
After I had some Rx losses in packs 4 and 5, I decided to install an R9 Rx instead. Actually, in flight #4, the OSD shows an RSSI of 0 mid flight (that's with the R-XSR I had installed before). Packs 6 and 7 didn't show any sign of low RSSI or even Rx loss any more, but it's too early to really count on that.

Also in pack #4 I had some unwanted trim on the pitch axis. All trims are removed now and not having to fight that constant back spin is much better.

I'm now trying to launch in such a way that the quad immediately goes forward after taking off, by applying a bit of throttle and leaning forward before I take off. Seems to work.

Theses two packs were fun to fly although I had to stay on one side of the RC field, but watching the flights is probably not much of a thrill.

Here's #6:
FPV progress - flight #6 (5 min 2 sec)


Chasing a jet that is just about to touch down wasn't that much of an accomplishment, but the other one was fun.

Throttle is scaled to 85% but still a bit tough on the battery I guess. The logs show sag down to 9.1 V (for a 3S pack) at about 60 Amps in those power loops. That's just above the peak C rating of the battery (BetaFPV 3S 850 mAh 35C/70C). I'm looking for smaller motors now, but then again I could simply build a smaller 3" quad instead.

And #7:
FPV progress - flight #7 (4 min 15 sec)
...Continue Reading
Posted by TMacFPV | Yesterday @ 03:12 PM | 520 Views
Can you improve your flight skills just by changing a few numbers in Betaflight? Possibly! Today we take a look at a few of those numbers, make some changes, and conduct demonstration flights with how those changes turn out. Specifically, we make changes to our Micro FPV Quad Betaflight setup Feedforward numbers, and look at the associated Feedforward Transition & Smart Feedforward options as well as I Term Relax.
BETAFLIGHT MICRO FPV FEEDFORWARD (24 min 35 sec)

Posted by RickC_RCAV8R | Yesterday @ 10:57 AM | 693 Views
Gentlemen :

When I do get the chance to fly , the Quanum Chaotic is my recent bird of choice . I have this one (of 3 owned) rigged up with a Walkera DV04 digital camcorder under the nose for some camera work . As I tend to fly this one on 4S power , I am finding that there is plenty of power to spare while even carrying the camcorder and the newly designed 3D printed motor cover pods .

The motor pods have been designed to maintain optimum motor cooling having left the center area open . Escaping airflow can easily exit here . A heavier 2mm shell thicknes printed with a 70% infill makes for a sturdy pod skin which easily handles the landing gear loads .

When printing the lower pods , I noted that there was a central support structure which was kept ! I used a milling bit in my drill press to shorten this structure by about 3/8 " . Before mounting the pod , I used a heavy dollop of silicone on the lower motor mount and the top of this support structure . When the silicone cured over 24 hours , it made a great shock mount pad between the motor part of the frame and the pod support in its interior .


And that's it . A simple and effective addition to the Chaotic which works well .

Regards to my readers and Aussie mates . Cheers RIckC_RCAV8R
Posted by corsair2014 | Yesterday @ 09:49 AM | 671 Views
Quick clip showing bobbing:


Quick clip showing bobbing (0 min 55 sec)



Okay, here are some things I tried to remove that bobbing:


1) Change CG. Moved it way forward, way back, not much difference in the 'bobbing' behavior

2) Extend elevons. I thought perhaps the elevons were being blanked out at higher angles of attack as the flow separates/KF airfoil vortex sheds from behind the step. However, this seemed to make the behavior WORSE

3) Stiffen control linkages. This involved moving control horns to top, increasing torque and resolution of servo by adjusting linkage position, firming up the elevon hinge, etc. Didn't make much difference

4) Fly upsdide down.

And #4 is what made the difference. The wing flew a bit better upside down! For some reason, my KFm-2 wing wants to become a KFm-1 wing... and under loading (hard turns etc) this tendency flairs up and causes the bobbing behavior seen in the video.

Why does this happen??

Honestly I'm not sure, and being an aerospace engineer, it is killing me not being able to figure it out Sometimes when I am flying straight and level a gust of wind will come and make the plane take a hard nose dive... which means that in 'level' flight the wing is on the verge of creating 'negative lift', or swapping the high and low pressure regions of the wing... very odd, haven't seen that before.


All in all, it was a great learning experience (although frustrating) and revealed some good and bad points of...Continue Reading
Posted by old4570 | Yesterday @ 08:35 AM | 735 Views
Got me another budget motor from Banggood ..
Wont bother with a link since no one is interested in anyway ...

The only prop I had on hand to try was a 8045 ( 8 x 4.5 ) Electric Prop ..

2s Battery ( 2200mAh )

7100 RPM @ 9.6 amp

3s Battery ( 2200mAh )

9150 RPM @ 15.5 amp


Even though there was not a huge RPM difference between the 2s and 3s , one really could feel the thrust difference . I cant help but feel that this motor would wind out some once the motor was in a plane and moving forward . On the 2s battery the motor remained completely cool to the touch and on the 3s battery it became lukewarm . So the motor did notice the load under the 3s battery , but not overly so . Especially considering that the recommended prop is a 8 x 4 on 3s .

I would say that this motor would be very happy on a 2s battery and a 8045 prop ( I like the peak current draw ) . I would be very tempted to even try a 9x4 prop with a 2s battery to see how the motor handles it .

Soldering Day :

Lots of things needed soldering , and with the wind blowing rather hard outside the soldering iron got a work out .
The R4 needs a Rx , so I had to solder the pins to one of the FS2A Rx I keep handy . Also needed to do a battery lead .
Also have several projects that need doing ..

GT Power Tachometer

Goodness me ! I love and hate these !
I love that they do multi blades , the Tach is relatively cheap .
Butt! , I really hate the button batteries .
These tacho's have parasitic drain . And the batteries are always flat when I need the tacho .
So I will be doing a AAA mod shortly and run it on some rechargeable AAA batteries in a external cradle .
Might have to do a thing on the mod !


Posted by UnknownForces RC | Yesterday @ 03:08 AM | 849 Views
The efforts behind the development and design you can't see it, it happens like these picture showed. Quality is not easy to succeed at once, we have to stick to our own standards and work hard to win the praise of users.