Posted by visioneer_one | Today @ 10:01 AM | 82 Views
Originally Posted by vimy g eaou
And like you, I was shocked at the price of these SMPS's compared to what they used to be.
I also had a pair of DPS-1200s die after using them off a generator. They were in series, and the generator is an inverter type

Lol at the prices on these now. Blame the cryptocurrency nerds!

I replaced them with some DPS-750s, also in series. These are cheap for now at around $19 off of eBay.
(turns out that I didn't really need 900+ watts to run half my charging station)

Also - I've bought 6 of these and converted them to run in series. The conversion procedure is identical to the DPS-1200s


turns out that there are different types of DPS-750s which are not compatible with each other. pairing incompatible ones in series invariably - and quickly (literally within minutes - kills one of the two supplies.

went through three PSUs before I discovered that little nugget of information I thought I was doing something wrong when floating the ground or maybe they were just dodgy from the start but Nope not quite - it just so happened that I managed to pair up incompatible ones. Twice.

the last set I converted and paired up for 24V a little over a week ago. They passed my initial testing and worked as expected for this past weekend's charging activities. So far so good.

if they continue working I'll tear the vinyl off of them and post pics as to...Continue Reading
Posted by TMac54 | Today @ 09:28 AM | 96 Views
Good Day to All!
This is my first "blog" post and am not sure how this is really supposed to work, but I'll give it a shot. First, a little about my journey.
Started flying quadcopters for the first time ever in January 2018 as a result of my purchasing quads for my sons & daughter to fly. I thought they were cool and my children would love them. turned out--I loved them too and wanted to give them a shot! So, Line-of-Sight I went, learning basic flying skills and attempting to do so with my first quad (a 5-inch) in my backyard. That didn't go so well, as you can imagine.

Got a Hubsan to learn indoors. Better. Got a QX65 to learn FPV. OK, I'm hooked! Got a Diatone GT-R90. What a blast! FPV simulators--yes, plural! This process has taken me several months, but I have enjoyed the journey and learned a lot and continue to learn. I hope I will always! This stuff is SO Much Fun!

So, I wanted to start this blog by passing on some of my lessons learned over the past several months, beginning with my thoughts on a Beginner FPV Drone "Kit." Looking back, there is a much better (and cheaper) way to get started in this hobby with better equipment than I did. Here's my stab at it:

BEST BEGINNER FPV DRONE KIT - Racing Drone for Beginners (22 min 39 sec)

Posted by Bill M - RC | Today @ 09:21 AM | 94 Views
Hi fellow rc pilots & rc enthusiasts

Mobius Maxi camera review. This Mobius Maxi 2.7k Actioncam review includes unboxing, overview, features, functions, settings, various test clips & an aerial video from a quadcopter drone.

Get this Mobius Maxi 2.7k Actioncam here now:

Get the Mobius C2 Actioncam here now:

Mobius Maxi 2.7k Actioncam review (26 min 14 sec)

Posted by scousethief | Today @ 08:43 AM | 112 Views
You know you want one

Smallest Flying Sports car -Koncepto Millenya- (3 min 1 sec)

Posted by scousethief | Today @ 07:19 AM | 149 Views
This will be a relatively simple test between the various DVR's that we use for recording FPV footage , there are of course some restraints that we have to take into consideration when testing which i will try and explain as i go along.

To make a clean comparison i will -- as far as possible-- use the exact same equipment for each test only swapping out the DVR , there are of course some like the Stack-X and the Split that require their own camera.



The original Eachine TS215 DVR
...Continue Reading
Posted by lawrence4 | Today @ 02:51 AM | 217 Views
3mm foam.
DSMX receiver build in 3A BL ESC.
Eflite 180 2500kv motor
GWS EP-5030
Line servo x 2
2S...Continue Reading
Posted by yqrninja | Yesterday @ 11:51 PM | 260 Views
Saturday nights job is to carve out the foam at the wing roots in order accept the wing bolt blocks and join the wing halfs. I think primarily this is to provide some support the wing bolts and prevent crushing. Blocks are less than 5g. Carving the blocks only takes a few minutes on the belt sander. Happy with the way it all fit together.

Supporting one end of a wing up with a scrap piece of foam, up to the blue print specs to get the right amount of dihedral, and epoxying it together. This time I needed a thicker epoxy, lightened with some micro-ballons. I was careful again not to go crazy with the epoxy when gluing wing half's and blocks. It is tempting to squish in a lot of epoxy and glue it together. Lots of epoxy does not equal more strength. I measured the before and after weights, the epoxy cost me another 1.6g. Strength at the wing joint is the job of the fiberglass center joints. (Tomorrows job).

Also.......I found a wonderful beer by Black Bridge Brewers, these guys know how to make an IPA. Outstanding. I can have a beer on a Saturday.
Posted by XionUAV | Yesterday @ 11:33 PM | 252 Views
Another plane I picked up used and cheap. I like cheap planes like this because there's less attachment, which is good because this one snapped over and went in inverted on its first launch. Mostly my fault for not throttling up enough when tossed. I will admit that I'm jealous of the guys who just underhand lob this one and the EFXtra and they take off perfectly smooth and level. Still working on that one. Just need more practice. Normally I prefer to overhand throw so a plane is already one mistake high at launch. Of course that didn't help much the first time.

Stock motor and ESC running an APC 6x4. Motor is kind of noisy. Not the best quality. Will probably swap it out with something better later.

Nothing really new here since there are already bunches of videos and other info on this plane and its successor. Finally tossed the rebuilt Racer yesterday. Used a 4S with a quarter ounce of weight taped to the front of the battery to get the CG at center specs. Didn't notice anything odd with the control surface travel (the elevator was centered at neutral) but right after launch it started climbing excessively, which was clearly abnormal. At cruise throttle it would climb, stall and drop. Full down would produce mostly level flight. Low throttle and full down trim was required to get a hands-off cruise. Up elevator would snap it over into a rolling loop. To bring it down controlled I had to either keep it in a banking turn or would occasionally roll it over and do a...Continue Reading
Posted by yqrninja | Yesterday @ 11:26 PM | 266 Views
Friday evenings job is to glass the wing edges. This is to support the carbon rods to the tip extensions. I will be building the Odyssey in the dihedral configuration. Using as little epoxy as possible. Wet it out then using paper towel to pick up the excess. I am using slow cure epoxy from a company called Raka (, I had some left over from another project and it is wonder stuff to work with, high viscosity compared to the hobby store stuff. This should allow me to keep the epoxy pretty thin.
Posted by yqrninja | Yesterday @ 11:10 PM | 266 Views
Curious to see how it measures up I weighted everything.

Raw parts weight in at 907.77g, that is not counting a receiver weight. As I am undecided about what Rx to go with, I estimate that to be in the 10g range. That brings it up to ~920 g. The big unknown is how much glue and finishing are going to weigh, for example epoxy and lacquer finish.
Posted by jimharley909 | Yesterday @ 10:57 PM | 260 Views
This won't be too wordy as I'll let the pictures speak for themselves.
IMG_0760 by jim harley, on Flickr

This past weekend was the U.S. Air Force Museum's annual WWI fly-in and airshow. The turnout was phenomenal on Saturday. It was in the low 60's and cloudy but other than that it was busy all day with both spectators and R/C modelers. I haven't been to this since it's inaugural event years ago and it did not disappoint. Balsa U.S.A. had a nice tent set up and they had a number of kits for sale. The full scale guys had a good presence with about a dozen aircraft representing a mix of full scale and 'stand off scale' replicas. There was a full scale Fokker DR. 1 with a rotary engine that was just stunning. There was also a full scale Spad with an opposed engine...looked like a big Lycoming but I could be wrong.

IMG_0763 by jim harley, on Flickr

Last Thursday a couple guys from the Alliance Balsa Bees invited me down and be a part of the show. Rick Jacobs graciously let me fly is beautiful BUSA Pup in the show, which was quite an honor. Wright Field is more or less mecca for the USAF and military aviation in general. The selection of models in attendance were some of the best I have ever seen in one location...and there were a lot of them. I didn't count but if I had to guess there were over 40 models and both allotted flying times saw at least 10-15 models on the flight line with up to 6 in the air at one time. I think there would have been more but the wind was...Continue Reading
Posted by yqrninja | Yesterday @ 10:53 PM | 269 Views
Fall 2018 Odyssey ECL build log.

After a couple of years of following the Arthobby thread, and watching anything I could on YouTube about the ArtHobby gliders I ordered the Odyssey. I struggled with pure glider verses electric assist. I e-mailed Andre, and he advised that the new light weight version was about to be released. The new ECL version was quickly shipped and delivered in less than 7 days.

Combined with a Castle 25 ESC and Art1300 motor, which is capable of lifting a 1300g air frame, the projected weight is suppose to be around 900g. I am sceptical at being able to get that weight as everything that I have seen on the web is greater than 1100-1200g.
Posted by GroundControlRC | Yesterday @ 07:40 PM | 311 Views
RC Tip #17 - FPV System Test Before Flight

RC Tip #17 - FPV System Test Before Flight (1 min 16 sec)

After having an FPV System Failure on a brand new system I decided to not only test it on the ground before flight but also test it in the air before putting on my FPV Goggles or Visor.

I do this by using my FPV Monitor and DVR to record the flight video from the FPV Camera and then review the footage to make sure the system is working properly and the signal is stable.

This will at least expose any immediate issue with your new FPV System and hopefully save your aircraft.

Always check before Flying FPV!

Here is a link to this FPV Camera:
Turbowing 5.8G 48CH 25mw Transmitter 700TVL 120 Degree Wide Angle Wireless FPV Camera NTSC - Copper Antenna

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

Happy Flying!
Posted by aben71 | Yesterday @ 06:43 PM | 346 Views
Today I rounded up a bunch of my quadcopters and took them out for a flight test with the Jumper T12./This is such a fantastic transmitter to have,I brought out five quadcopters and only needed the one transmitter to use them all!Awesome

Jumper T12 Muli Protocol Open TX Field Test (15 min 52 sec)

Get one here
Posted by montis | Yesterday @ 03:17 PM | 418 Views
In the August of 2018 Jumper introduced the T8SG Lite radio – the “little brother” of the Jumper T8SG.

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Jumper T8SG Lite

Lite version of the T8SG comes in a small box, with a chance to be broken in the severe postal processes. I have received the undamaged unit despite my package beeing totally crushed.

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Inside the box we can find the transmitter itself, USB mini type cable and nice Jumper neck strap (lanyard).

...Continue Reading
Posted by Ghia | Yesterday @ 01:08 PM | 463 Views
Lipo chart
Posted by ivordel | Yesterday @ 08:33 AM | 592 Views
It's not going to be pretty!

Looked in the spares box and found enough to botch something together.

Bits found:
F4 fc flashed it with inav fw
20A simonk esc x4
Ppm encoder
Mini GPS with mag
850kv brushless got these from giantshark/giantcod (they went belly up circa 2015), so @ least 3yrs old
12mm alu tubing
Alu plates 2mm
Zmr 250 cf arm
8x4.5 props

Runs on 4s lipo

It lives.

Part box build (0 min 45 sec)

Yes, it's a rainy day....Continue Reading
Posted by BAF23 | Yesterday @ 08:03 AM | 628 Views
Chapter 1: Introduction to the Tipsy Nipper

Pic at cox

How can you squeeze a person of normal height and shoulders into that tiny cockpit?

Aircraft history

In 1952 designer Ernest Oscar Tips started designing his diminutive T66 in the Fairey aircraft factory in Gosselies Belgium. As the Hawker Hunter license production ran down he started building prototype OO-NIP that was testflown with open cockpit on 2 december 1957 by Belgium’s famous test pilot Bernard Neefs. In 1959 production started on the closed canopy Mk2 that were powered by a 45hp Volkswagen, Stamo or Hepu engines with exposed cylinder heads, 64 were built till 1962 (+78 kits delivered). Because Fairey started producing the F104 Starfighter, the Nipper production was then taken over by Cobelavia that produced 18 Rollason cowled-engine Mk3 Nippers in a hangar in Kortessem (just a few km from my town and model airfield) till 1966. From then on production of complete aircraft (and kits) was transferred to the U.K. Slingsby built them till in 1971 the Donington based firm went bankrupt (after producing 32 complete aircraft). Later kit produced variants even boosted a 85hp Jabiru engine. Nowadays many still are airworthy in the UK, Belgium and the Netherlands.

The design philosophy had been to produce a lightweight single seat aircraft that was cheap to produce and operate, and easy to fly. Although not the smallest nor prettiest, it was the smallest practical aircraft and even had aerobatic...Continue Reading
Posted by schumixmd | Yesterday @ 06:38 AM | 600 Views
After getting myself a new FrSky Horus X10 to enter the OpenTX world, I was offered to review the Jumper T8SG Lite Multi-Protocol transmitter which also runs on a open-source firmware.

The transmitter came few days ago. After playing with it for few days here's what I think...
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The Box and unbox:

The Jumper T8SG Lite comes in a small box and assuming the shipping company would handle the box normally it is unlikely to be damaged. In the box you don't get too much - the transmitter itself, a nice orange neckstrap with Jumper text and a mini-usb cable. The batteries are not included.
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