R/C Blogs - Page 101 - RC Groups
Posted by burkefj | Dec 08, 2017 @ 03:43 PM | 2,350 Views
I did the wing a flat plate, with just the motor pods mounted under the wing tips, and a modified front bridge/pod that is flat on the bottom to allow the rail guides/rail to clear the bottom. A 24mm motor tube will go from rear into the front bridge, and allow the wires to route through to the receiver/1s battery in the bridge with a small plate on the bottom to cover it up made of styrene. The 24mm tube will have a coupler the full length inside to reinforce it. This will be adaptable to a pusher parkjet if desired as well.

I've cut the pieces out, 29" long, 23.5" wingspan, around 11" at the root. I'll have an angled plate on top of the 24mm tube to give it the tapered look. I did add a single vertical stab for stability.

Here's what I'm using for the initial flight CG

http://wingcgcalc.bruder.com.br/en_U...d6=0&sweep6=0&...Continue Reading
Posted by travelwithdrone | Dec 08, 2017 @ 02:12 PM | 1,357 Views
Ladies and Gentlemen ;
we are pleased to announce the fourth edition of the competition for the best aerial video on travelwithdrone.com (since 2014)This year edition, the part in competition is taken by about 21 clips submitted to us from January to November 2017. These are 21 incredible films you can know from ”the movie of the week”. So there are films of authors from the following countries : Qatar, Greece, Malaysia, France, United States, Vietnam, Norway, China, Iceland, and more. As you can see, voting in the contest will be possible from 3 December to midnight 31 December 2017. The contest will have two
stages. First one (3-15 December) is about voting for any nominated video. Only 7 videos will qualify to the second one, which will last until 31st december.

Vote Now!

Creator of the best video will be announced and awarded in January. So if you hadn’t already seen videos included here, we encourage you to watch them, and then vote for the movie that you liked the most.

The Best Drone Video 2017 (3 min 0 sec)

Posted by l shems | Dec 08, 2017 @ 12:00 PM | 2,140 Views
Make sure you open the post en click on the read more to see the all pages. Otherwise you will see page 8 as last page, and not page 16.

O previously posted some analysis on DLG design in this Blog. After some discussions about smaller than 1.5 meter wing span DLG's possibly outperforming the full size ones on the last WC in the Ukraine, I dug up my old analysis, and worked on it a little to find out if I could derive the theoretical optimum span for a DLG. That is to say: optimum for maximum airtime in still air at a fixed launch speed.

It turns out that actually the current launch speed determines the optimum terminal velocity to design the plane for. So making the plane faster or slower with respect to this terminal velocity would lower the total airtime for this launch speed. A terminal velocity of only 60% of the launch speed would be the optimum design speed for obtaining maximum airtime.

Secondly, the maximum airtime itself can be expressed in the L/D ratio and the launch speed only! So, basically speaking, just optimise L/D and you will optimise maximum airtime (for the optimum design speed that is). The expression is quite simple:

t_(flight,max) ≈ 2 / 3g ∙ (L/D)_optimum ∙ √((L/D)_optimum ) ∙ v_launch

When entering an L/D of 12 to 20, and a v_launch of 40 m/s, the still air time will be between 115 and 245, with an average 180 seconds.

Finally, the question I started with. The expression for terminal velocity that you...Continue Reading
Posted by Alex fpv | Dec 08, 2017 @ 10:44 AM | 1,645 Views
I have a spectrum serial race receiver and a dx6e transmitter and i am able to bind them but cannot get any signal from the transmitter and when I go into cleanlfight and the receiver tab and try and move the switches nothing happens but I am able to bind to it. If anybody has any ideas of what the problem is please tell me
Posted by STRYKA. | Dec 08, 2017 @ 05:35 AM | 1,702 Views
So I decided a few months ago that instead of building another racing quad, I would try and build a fixed wing FPV model (cause i liked the idea of having flight times longer than 3 minutes ). I also quite liked the idea of using Inav as it would give me GPS flight modes and an OSD with a $20 flight controller and a $15 GPS module (waaaaaay cheaper than using an EagleTree Vector or a Pixhawk and a bit more up to date than a APM board).

For the airframe I will be using a Bixler 2 cause its cheap and im familiar with it.

FPV capable
Headtracking for the FPV camera
On Screen Display (OSD)
GPS flight modes e.g. return to home
20 minute+ flight times
Not super huge and expensive

Main Components:
Airframe: Bixler 2 kit (new colour scheme)
Servos: 8 HXT900 9g
ESC: Turnigy Plush 30a
Motor: Turnigy Park 480
Receiver: Frsky X6R
Prop: Hobbyking 8x4
Flight Controller: Omnibus F4
GPS Module: Neo M8N
FPV camera: Foxeer arrow mini v2
Video Transmitter: Fatshark 250mW
Video Transmitter antenna: MenaceRC Raptor Stubby Pagoda RHCP
Posted by Saptak Rc | Dec 08, 2017 @ 05:08 AM | 1,625 Views
Please help me out to buy a edf. I have made the whole fuselage but i have no money to buy a motor or edf. Please give me a very small amount of money here

Please give me a small amount of funds here
I will be very grateful.


Posted by Saptak Rc | Dec 08, 2017 @ 05:05 AM | 1,554 Views
Please help me buy a edf. I am very poor. My plane is ready but i have no edf
Please give me a small amount of funds here
I will be very grateful.
Posted by Saptak Rc | Dec 08, 2017 @ 05:01 AM | 1,350 Views
Posted by Saptak Rc | Dec 08, 2017 @ 05:00 AM | 1,340 Views
Posted by Saptak Rc | Dec 08, 2017 @ 04:59 AM | 1,362 Views
Watch this
How to make a cardboard rc plane. Part 1 (6 min 1 sec)

Posted by old4570 | Dec 07, 2017 @ 08:30 PM | 2,036 Views

Christmas ( Xmas for some ) is creeping up on us , rather uncomfortably quickly to boot .
This year I took advantage of all these crazy sales ( some may have noticed ) and the Bugs 6 is what I got my brother . ( Yeah it was on sale )
Came today , so it's currently wrapped and parked next to the plastic Xmas tree .
I did take a peek and it does look like a quality ( plastic ) quad .

Maybe after Xmas my brother will let me play with it ?
Posted by Tahoe Ed | Dec 07, 2017 @ 04:58 PM | 2,231 Views

Two dataes available - Dec 12 - Dec 13 @ 9AM both days

Location: AbelCine Industry City, 88 35th Street, 4th Fl, Brooklyn, New York 11232

Tickets available at: https://www.abelcine.com/learn/calen...in-2-intensive
Posted by QuadifyRC.com | Dec 07, 2017 @ 04:18 PM | 2,260 Views
You can currently build a micro 'whoop' for $50 including some decent goggles using a Furibee F36 quad, LST micro AIO camera / VTX and the Furibee VR01 5.8GHz goggles since all are on sale at the moment.

Also, you can get a Leader 120 with runcam micro sparrow and adjustable 25/200mW VTX for only $130 - again, all on sale. Here is my review on that setup

More details here on these on other XMAS deal that are better than the crappy ones I posted earlier:


Posted by allenp3 | Dec 07, 2017 @ 02:27 PM | 1,824 Views
Posted by decuzar | Dec 07, 2017 @ 01:43 PM | 1,720 Views
Okay so Im attempting to build a 3DHS 79" slick 580 very lite, my goal is for the plane to come in at 13lbs wet, I will document my progress along the way, Im not fast so this may take a few months...........



Wingspan: 79 inches
Length: 77 inches
Wing area: 1167 square inches
Weight: 14-15.5 lbs.
Firewall to back of spinner: 6.5 inches

Gas Power System

50CC-55CC single cylinder gas
12-17 oz. fuel tank
22 x 8 gas prop

Posted by DismayingObservation | Dec 07, 2017 @ 01:37 PM | 2,105 Views
As I’d mentioned at the start of my last mini-review here on the RCGroups.com blogs, the joy of the Christmas season brings out some rather fun, but seasonal, items. That marketing angle is making its way into the hobby market.

Here for your consideration is just such an item, one which also qualifies as one of the strangest flying models I’ve ever reviewed. It’s the JJRC H66 X-Mas Egg quadcopter from GearBest.com, complete with a 720p camera which connects via Wi-Fi to a smartphone. The app also allows control of the model via Wi-Fi.

It’s easy to imagine such a bauble with a fun, secular Easter theme. But Christmas? Eggs?

That got me to thinking how eggs and Christmas are somehow related – and then it hit me.

Eggnog! If ever there were a holiday treat which should be available year-round, eggnog is above and beyond my first choice. I’m kind of kicking myself for not remembering that sooner. Now that I have, let’s crack this open.


• Dimensions (L x W x H): 105 x 105 x 80mm
• Construction: Injection molded plastic body, landing legs and radials; plastic propellers; steel radial springs
• Motors: 7mm coreless
• Battery: Built in 300mAh 3.7V lithium polymer
• Transmitter: 2.4GHz four-channel with various flight modes
• Claimed Range: 30 – 50m
• Claimed Flight Time: Six minutes after 45-minute charging period
• Camera: 0.9 megapixel/720p...Continue Reading
Posted by Jack Crossfire | Dec 07, 2017 @ 01:30 PM | 2,420 Views
It went only 24.5 miles with the speaker, extra food, & camera. The speaker wasn't much better than silence, because it was 5 hours of the same old song. Audiobooks are a novel concept, there aren't many good ones. Getting the extra mile would be just a matter of another 1Ah battery somewhere. The trick is when connecting a fresh battery to a drastically discharged battery, the inrush current hits 5A at only 11V. Wiring 3 batteries in parallel would fill it with unused connectors most of the time. There's also discharging the 1Ah battery early in the drive, then putting in the 5Ah battery. This wouldn't work because the 1Ah battery would discharge far slower in the beginning. There's also carrying around a terminator & driving just on the 1Ah battery in the end.