Posted by ronaldopn | Feb 07, 2018 @ 05:46 PM | 6,562 Views
First flight of last Sunday, this plane is pure fun
I wish my camera didn't have such a wide FOV.
Ronaldo

Setup:
Turnigy SK3 6364 213kV (rewound to 248kV)
12S 3300mAh 60C lipo (2x6S in series)
Hobbywing 100A HV ESC V3
YEP 20A HV SBEC
Goteck HC 1621S HV servo
Skyline Raven 30cc (CMD Deodoro) (5 min 17 sec)

Posted by Jeffrey Ewing | Feb 07, 2018 @ 05:45 PM | 3,605 Views
Just finished my latest build. This one was a lot of fun, but as soon as I am ready to go fly... the bottom falls out. I got to do a test hover yesterday evening, so I know this thing's gonna fly. This is a Tokio sx frame my nephew picked up from right here on the groups for Christmas. So I went into full panic mode needing new drone parts. I have the Holybro Kakute F4 V1.4 installed, new dalrc engine escs, 2207 2550kv emax light spec motors, tramp vtx, foxeer arrow v3,and this timei decided to try out the frsky radio and receiver(rsxr). I've got the radio all set up with the custom sound packs, LUA scripts and everything in between. Everything seems to be working very nicely. I just need some beautiful weather to really see what this thing will do. I wanted to set this thing up for 6s, but at the time of ordering my escs there really wasn't any 4in1 blheli32 escs 6s capable... so I compromised. I went with a 5s capable setup instead, and as fate would have it. They release something along the lines of exactly what i was looking for... a few days later... after I spend what I have set aside for my drone budget...WHAT THE ??? That just seems to be my luck sometimes. Well anyhow. Like I said for those who are intereste I've posted some pics of my setup. I just want to give a big THANKS to RC Groups and everyone who bought some of my used stuff. Without you all and this forum... this little project right here may have been put off till summer.
Thanks again, Jeff P.S. So me and my nephew have been kicking around this idea of building a complete REAL ready to fly set up with everything a pilot would need to be completely race ready out of the box...nothing left to do but charge your batteries. Let me know if this is a good idea.
Posted by FeiJi | Feb 07, 2018 @ 05:28 PM | 7,099 Views
Here is an interesting article showing how shark scales generate lift and perhaps this could be used in designing wing skins to generate more lift.
It would be an interesting project to 3d print a cross section mold of these vortex generators and use that to mold a foam flying wing to see how well it performs.

https://www.rdmag.com/news/2018/02/u...-wind-turbines
Posted by rclad | Feb 07, 2018 @ 04:45 PM | 3,712 Views
As a fan of electric power for both my RC planes and the car I use to transport them, I love the PR coup Elon Musk pulled by launching his personal Tesla Roadster into space yesterday. The Roadster was used in place of the usual dummy load of dead weight and launched on top of the new Falcon Heavy rocket. The live feed of the car in space is simply stunning. Beautiful views of earth and Starman, the "driver" in the car, as it slowly rotates on its trajectory to the asteroid belt. It was supposed to enter a similar orbit to Mars around the sun, but got more of a boost than planned. Oh well, still a fun ride! Congratulations, Space X, for a successful launch!

Live feed can be viewed here.
Posted by mnemennth | Feb 07, 2018 @ 02:50 PM | 31,700 Views
RaceDayQuads "SmokeStopper": No!

Not mine, not endorsed, Fraudulent Use of My IP!






*Sigh*

I was hoping it wouldn't come to this, but as Tyler Brennan continues to refuse to do the right thing, I'm making public notice here:


The RaceDayQuads "Smokestopper" is NOT Endorsed by me, it is not equivalent in any way to a real SmokeStopper™, it will NOT provide the same kind of protection that a real SmokeStopper™ does, nor is it usable as a diagnostic tool in the way the real SmokeStopper™ is.

This device substitutes a polyfuse (PPTC) and an LED for the dynamic ballast of the lamp filament; it is NOT an equivalent device, it allows excessive current to flow for far too long before tripping, and it is in most ways as useless as the HobbyKing "Boom Stopper" which I've already debunked and refused to endorse.

A little history here: I spent quite some time experimenting with PPTCs back when I still had only the high-current version; I could not find a value that would properly initialize 4 ESCs at once while still limiting inrush current to 400-500mA as the Low-Current version of the SmokeStopper™ does. This is why I went with the HI-LOW current design I updated with instead of a PPTC.

PPTCs have a steeper response slope than a filament on a 1157, etc light bulb; they ultimately open circuit similarly to a fuse. However, they are SLOW; and they can permit much higher inrush current than the bulb and for much longer.

...Continue Reading
Posted by 1Ironhorse | Feb 07, 2018 @ 02:06 PM | 3,181 Views
1.2 SCALE MODEL FEATURES

Some additional features for my model that I did not mention in the first blog post include:

2. Power is all electric;
3. Three 1 HP electric 36V DC brushed motors that I derate to 0.85 HP; (Note 3)
1 horse power = 746 Watts, Watts = Volts * Amps
Test data on the motors yields 864 Watts @ 36 Volts (24 amps)
Limiting the input voltage to 30 Volts (21 amps) = 630 watts or 85% of 746 watts
4. The outboard (wing) propeller shafts located 53” (scale) outboard of the centerline of the boat; (Note 4)
5. Engine Sound System;
6. Exhaust Smoke System;
7. Operational underwater exhaust system;
8. Automatic electric bilge pump;
9. External hull features: Auto Bilge suction scoops, zinc galvanic plates, propeller & rudder fairing plates, Generator engine saltwater intake and exit scoops, and Outlet Scoops;
10. Navigation light that are dimmable;
11. SO-3 Radar Dish that rotates;
12. All removable access superstructure held in place with magnets. No screws to remove;
13. Master power switch and charging jacks hidden in ammo ready lockers on deck;
14. Forward and Aft 50cal BMG turrets pan & elevate remotely;
15. Operational search light, pans & elevates;
16. 27mm, 37mm & 40mm Cannons pan & elevate;
17. Rocket launchers rotate out & elevate;
18. Operational Mk 13 torpedoes & launchers;

2.0 DESIGN CONSIDERATIONS

Taking a page from the...Continue Reading
Posted by marblekit | Feb 07, 2018 @ 02:03 PM | 4,936 Views
Posted by marblekit | Feb 07, 2018 @ 02:03 PM | 4,493 Views
Posted by marblekit | Feb 07, 2018 @ 02:00 PM | 3,853 Views
This one is not bad!

MD#68 🚁SPC Maker 110VT 👍 (10 min 3 sec)

Posted by unboxingexp | Feb 07, 2018 @ 12:00 PM | 2,524 Views
get the charger here

XT60 power supply (1 min 24 sec)

Posted by Blaze0021 | Feb 07, 2018 @ 09:59 AM | 7,620 Views
This is the 4S Maiden Flight of my Eflite F-27 Evolution BNF Basic.

Eflite F-27 Evolution BNF Basic 4S Maiden Flight (5 min 57 sec)

I can still remember the first day I saw a Parkzone F-27 Stryker. At the time I thought they were the coolest thing that the hobby store had on the shelf. And it appeared that they were on sale as they were being discontinued by the manufacturer. But that was about 5 years ago. At the time, I had never flown any RC aircraft and was just getting started in the hobby. I left the hobby store that day with a Hobbyzone Champ.

Fast forward to today, with years of waiting. Here is the successor to a legendary RC aircraft.

MODIFICATIONS:

1) Minwax Clear Semi-Gloss Finish Polycrylic Coated Airframe
2) Deans ESC / Lipo Battery Connector

TRANSMITTER, RECEIVER, & SETUP:

Transmitter: Spektrum DX8 G2
Rates Used: 100% Aileron / 34% Expo, 100% Elevator / 30% Expo
Mixes Used: Throttle / Down Elevator 4%
Battery: Admiral Pro 4S 2200 mAH 45C
Max Static Amps: 38.3
Watts: 570
Throttle Timer: 5 Minutes
Total Flight Time: 5 Minute(s), 12 Second(s)
Lipo Final Voltage: 15.07 Volts out of 16.80 Volts (3.76 Volts / Cell) at 24%

ADDITIONAL INFO:

Camera: iPhone 6 at 1080P / 60 FPS
Headmount: http://www.amazon.com/Mount-Smartpho..._detailpages00

Thanks for watching!
Posted by Yowoo Linda | Feb 07, 2018 @ 03:56 AM | 2,373 Views
Posted by 05RAVEN | Feb 07, 2018 @ 12:31 AM | 2,862 Views
Went out to the desert last weekend and got a couple shots with the drone. Thanks for watching!!!
Fun in the Desert (4 min 9 sec)

Posted by Jack Crossfire | Feb 07, 2018 @ 12:12 AM | 3,187 Views
A bit ironic that the thousands of useless animations you have to watch to get a phone to turn on were written in Silicon Valley while the utilitarian firmware which brought us affordable access to space was written in LA.
Posted by Howlnsound | Feb 06, 2018 @ 10:34 PM | 6,022 Views
Well, I have been flying for a number of years now mostly foamies and a few ARFs. I really enjoy the scale WW1 planes and others of that golden age. They had great style and flew well.
My planes have been getting bigger and bigger the past year or so moving up to 1/4 scale. However they have all been built already or ARFs.
I finally decided it was time to start this new phase of the hobby that has eluded me.... building and finishing a real kit.
I decided to start "simple", so I found a Flair Puppeteer kit and purchaced it. My good buddy Joe who has many more years than I do with building kits has kindly agreed to "mentor" me through this process.
The goal is to get enough experience under my belt and enjoy what I am doing enough to build the ultimate goals of my WWI fleet, a 1/4 scale Fokker DR1 and D VII.
At this point I only fly electric, so these will all be conversions as well, as if I wasn't already climbing uphill.
With his solid advice, I decided to start with the Pup.

I will try to add pictures as I go. Please enjoy and feel free to make comments... especially if you see me going astray...lol
But please be kind. Though I have done construction for years, this detailed skill is new to me and I am learning as I go.

Enjoy...