Posted by | Yesterday @ 10:18 PM | 163 Views
Recently I've done a lot of work comparing a high kV 2s brushless setup to a low kv 3s brushless setup using the WL TOys 124018 as a base same as 144001 and 124019.

This is based on the setup in my drop in brushless upgrade for these cars.

Peak RPM for both motors is 40,000 rpm using 2s on the 5400kv motor and 3s on the 3600kv motor.

Both setups were evaluated for efficiency, heat generation and top speed via GPS and then for a laugh I tried 3s on the high kv setup and 2s on the low kv setup.

Full results and findings are here:

Posted by Jack Crossfire | Yesterday @ 08:55 PM | 212 Views
The PLA parts got quite deformed. There was 1 crack. At least this gave some more direction on where to add reinforcement. There's definitely a place where sheet metal could be bolted in, to try to dissipate heat. The wheel hub is definitely holding back a lot of outward force. Not sure how best to farsten it to the wheel. It would need a lot of farsteners.
Posted by VicT | Yesterday @ 07:08 PM | 265 Views
Flaps get you down and slow you down. Flaperons and Spoilerons get you down but don’t slow you down. That’s why I cut flaps into the Apprentice wing the same width (chord) as the ailerons. You can drive them with one or two servos. The challenge is the Apprentice receiver. Keep the ON/Off white switches in the Off/Off position. I use B0 and B1 for Beginner Mode but audio alerts are “Self Level”. B2 is “OFF. I make the B switch a FM or transmitter flight mode and switch the Trim to FM so I can trim the B switch. I select the D switch for flaps in the Aircraft Type menu. A y cable for the ailerons and a Y cable for the flap servos. I can trim the elevator for D0 “Flaps UP”, D1 “Take off Flaps”, and “Landing Flaps”. I have aileron to rudder mix butt limit the value so as to prevent rudder reversal which is a bug in the receiver. The AR 636 receivers solved this problem.

First plug any working servo into Aux 2 of the receiver to check servo operation and program verification. Select 1 Ail 1 Flap on Aircraft Type on your DX 8 or 9. If you updated your DX6 to get 7 channels you might have good luck. Bind with a new model making sure your B switch turns SAFE ON and Off. Next follow the pics below:
Posted by benjamin presten | Yesterday @ 08:31 AM | 652 Views
Okay. Back to the Alphabet. Day 20 T

Travel Air Mystery Ship: Built in the late 1920s by Travel Air, the Mystery Ship was the fastest racer of its day. The first three were built in secret (hence the name) with the sole intent of beating the military racers that were dominating the scene. The Travel Air Factory painted out the windows in their factory so that they keep the project hidden from the press.

The design was pitched to Travel Air CEO Walter Beech by its designers Herb Rawdon and Walter Burnham. Building of the first three prototypes was started in 1928 and they were completed and flown in 1929. In september of 1929 the Mystery Ship became the first significan civilian racer to beat the military racers clocking in at a top speed of 208mph.

The Racer was flown by quite a few famous pilots including Jimmy Doolittle and one was even owned by Pancho Barnes and Paul Mantz. A total of 5 were built by travel air powered by a handful of radial engines and one with a Chevrolair inline 6. The fifth airplane was built for the Italian Air Force who used it for development of the Breda BA. 27 fighter.

Today there are a few replica Mystery Ships flying and a few originals in museums....Continue Reading
Posted by Jack Crossfire | May 04, 2021 @ 10:25 PM | 909 Views
It was big enough to fit the giant DSLR lens & a shirt, with flexing. 5.2 miles later though, the motors were lava despite not undergoing any stops & starts. Morbid thoughts & depression then ensued. It's pretty worthless if it can't sling the DSLR around.

Upgrading to 5060 motors is fading away. A 3:1 belt drive is gaining favor, but the starting torque suffers. A pancake motor is gaining favor. Another idea is bolting the existing motors to sheet metal & the sheet metal to heat sinks, to give them some minimal cooling. At least the DLSR is worth the heft.
Posted by tntctom | May 04, 2021 @ 09:40 PM | 872 Views
New to me Bob Martin SR7. Can't wait to get it on the slope
Posted by old4570 | May 04, 2021 @ 09:10 PM | 890 Views
Micro Mini Stick 2nd flight on 2s (10 min 6 sec)

That Zippy 350 really hangs in there in this combo . Battery voltage again was 3.83v when I put it on the charger .
Just needed a little aileron trim .
When you cut power the nose drops a little . ( I dont mind )
Flies reasonably straight for a balsa / ply plane , especially a micro size .
Dancing wings R03 Still available , $25 in the USA

I dare say , it could be built even lighter with smaller servos / motor / esc and battery .
A sweet little park flyer . Mine makes hardly any noise at all , from any distance it may as well be a glider it's that quiet .

Mine comes in at 126 grams with a zippy 350 2s ( Flying weight ) ..
I think with some careful building , 100 grams may not be out of the question . ( component choices )

The way I built my wing , I got a little more chord , but my CG is right on 45mm from the LE
Posted by Reckless_fpv | May 04, 2021 @ 07:11 PM | 923 Views
Posted by Reckless_fpv | May 04, 2021 @ 07:10 PM | 926 Views
Posted by Reckless_fpv | May 04, 2021 @ 07:09 PM | 923 Views
Posted by WizofWires | May 04, 2021 @ 03:05 PM | 1,044 Views
Harrier AV8B Longflight (5 min 23 sec)

When I found my PhoenixRC 4.0 disc in a box while cleaning, I nearly threw it out. It's a good thing I didn't!

I discovered a whole new world of great members who are still flying PhoenixRC and thriving. I tried downloading a
model that I have wanted and broke out an old laptop to demo on. It has been "all aboard" since then.

Part One- Small EDF power for UMX-sized Jet Models.

This Mini-HowTo is intended to describe my work-around for some "wish list" items that I find lacking in PhoenixRC.
(There are more, but here's a start) I believe EDF jets were around by the time the original v3.0 was conceived, but
were only lightly represented in updates (Habu, Habu2, A10 handlaunched). The only methods available for building
your own, in Builder, were A) scale down a turbine or B) use a faux prop, and make a pusher. The creative team had
more options, but the lonely user had to "trick the sim". I basically used the Habu2 (a scaled-down turbine) and disected
it. Importing the .geo (geometry) file into builder with a much smaller preset wingspan, (0.372meters) to match the
30mm EDF powered UMX-Habu-S. I then punched in the position and sizes of the airfoils to match the model in Builder.

Why did I do this? ... Being equipped with a 3D printer and reading the 30mm EDF thread, right here on RCG, I had
a bunch of beatifully designed ducts and Impellers that I wanted to make visible in my...Continue Reading
Posted by hugo secondname | May 04, 2021 @ 09:04 AM | 1,211 Views
I've read lots about foam edf jets and found many plans for some on RC Groups. I've decided to build an f-22 raptor and power it with a 25mm edf.
I 3d printed an edf hull (or whatever the bit around the prop and motor is called) and put a 10000 kv motor in it, turning a 4 bladed prop.
The motor is running of a 450mah 2s tattu lipo battery and a jamara xetronic 3a esc. All the components are rated for 1-3s lipo. Trouble is, when I run the motors on full throttle for more than a few seconds, it bets unbearably hot and starts to smell weird. I'd appreciate it if anybody could help me find a solution to this problem, so I can continue my build.

All help is appreciated,
Hugo S.

Ps: here's the link to the motor :
Posted by Kearn | May 04, 2021 @ 07:29 AM | 1,271 Views
I need to find out which gas engine i can use instead of a Zenoah G-45
Posted by Tazkiller85 | May 04, 2021 @ 04:59 AM | 1,626 Views
Yep Les Amis,
6 moteurs au creux de la main ! J'ai en test aujourd'hui le tout nouveau FIREFLY HEX NANO de chez Flywoo. Un Hexacoptère de moins de 60g ! Belle performance de la marque qui nous avait déjà surpris avec leur Hexplorer LR qui affichait de belles performances. Ce micro kwad à six moteurs est bien pensé et a été bien conçu, avec des éléments de qualité (moteurs et électronique), et la possibilité d'emmener une caméra légère, type Naked ou Insta, il est super à l'aise pour des vols doux et cinématiques. D'un autre côté, le fait de posséder 6 moteurs lui confère une puissance notable en 4S et autorisera pas mal de figures de freestyle avec une faible prise au vent et surtout, aucune vibration, jello ou propwash ! Bien joué Flywoo pour cette innovation et les réglages d'origine que vous avez pris soin de peaufiner ! En bref, un plaisir à piloter... Prenez soin de vous et merci à tous pour votre soutien .

FlyWoo Firefly Hex Nano - Review Test Démo - Micro Kwad Maxi Perfs ! (27 min 17 sec)

NOTATAZ : 17.5/20 Cinématiques et Freestyle !
Les + : Pilotage / Réglages / Autonomie / Caméra / Conception / Polyvalence.
Les - : Seulement 2 hélices en spare / Sangle lipo / Pad lipo / Tubes d'antenne.

- Firefly Hex NANO Beta :
- Firefly Hex NANO INAV :
- Nano ruban double face :
- Tubes Antenne :
- Pads antidérapants collants noirs :
...Continue Reading
Posted by oldponytail | May 03, 2021 @ 10:29 PM | 1,477 Views
Hi Guys,

I'm a Newby to RC flying, though, until I retired I was a Full-Sized Gliding Instructor in New Zealand. The cost of that pastime is not sustainable on my pension, hence to new interest in model flying. I'm having fun with it!

I own the Radiomaster TX16s and am flying a few models both gliders and power aircraft (including small, indoor models).

I recently started building a Microaces DH.2 model for indoor flying. I chose the Spectrum based receivers they supply. I am having problems binding with the the receiver. They sent another one and I can't get that to bind and work either. Therefore, I'm guessing that it is my novice experience that is causing the issue.

I follow the Set-Up Model system, choose the channels as TAER but still can't get a working bind.

Anyone care to help?
Posted by old4570 | May 03, 2021 @ 08:50 PM | 1,558 Views

Provided for review by Xtar

Product page @ Xtar

VC4 User manual

...Continue Reading
Posted by jmxp69 | May 03, 2021 @ 01:41 PM | 1,740 Views
This video shows how to setup the Happymodel ExpressLRS ES915TX/RX combo. This tx/rx pair comes from the factory with ELRS flashed already, so you can bind and fly if you want. This video shows the software required to compile your own rx/tx firmware, flash them to the devices, setup the radio, enable CRSFShot, and configure Betaflight.

ExpressLRS Complete Setup Guide for Happymodel ES915TX and ES915RX (27 min 37 sec)

Posted by Cox PT-19 | May 03, 2021 @ 11:14 AM | 1,883 Views
Suffering from some sort of cranky indifference over the weekend, I passed on traveling to Breezy Hill for our annual memorial fun-fly to our late/great buddy, Darryl Wilson.

After a few hours of sitting in my chair like an old man waiting to yell at kids to get off his lawn, I noticed that the wind had really dropped, and decided to bring out the Dynaflite Butterfly Darryl had built several years before his passing.
I'd charged it up the previous night, on the chance that I might feel more sociable on Sunday, so it was just a matter of strapping on it's wings and going for it. I KNEW I wasn't at the top of my game, as far as flying, but just went for it, and got a reasonable flight that was right on the verge of being fun.

After a successful return, out came the Go Pro cameras and their selfie sticks, and the Butterfly was refueled for another round. In spite of my freshly mowed yard, I chose to hand-launch from the cow lot, as the wind was now rapidly picking up from the southeast.

This went well, with the O.S. .25FP hauling the motorglider through the downwind turbulence of the back barn. I flew only a few laps, with a couple loop sessions before the rising wind convinced me to bring the Butterfly home.

Instead of going for the wonderful tall grass of the cow lot or pasture, I elected, as I'd done in the previous flight, to "shoot the chute"...that somewhat narrow approach to my front yard between the powerlines and cedar tree.

When the...Continue Reading