Posted by i-fly-any-and- | Jul 17, 2016 @ 10:04 PM | 6,554 Views
super morton m1/m5 engine cylinder
Posted by Jack Crossfire | Jul 17, 2016 @ 09:18 PM | 3,170 Views
Revisiting the anticogging table generated a few months ago revealed a bug in its calculation. Measured again the hall sensor readout for a wide range of rotation & found the cogging was fairly consistent around the motor's entire range & power levels. A little manual tweeking just might make a table which defeats the cogging.

Calculated a new table of phase offsets to correct the cogging. This looked a lot more ordered than the previous table. With the new table applied, the rotation was a lot smoother. It still wasn't perfect, but the months had proven any other method would be inferior.

Recursively creating a new anticogging table by testing itself didn't improve the results. A plot of a complete rotation using the anticogging table didn't show any areas where an equal offset could be applied to all parts of the rotation.

Finally, making an anticogging table for the motor's entire rotation rather than a single sine wave period showed some improvement but took too much memory. It means there's some variability in the reluctance or the stiction for different parts of the rotation.


Anticogging a brushless gimbal (0 min 28 sec)

Posted by beachflyer | Jul 17, 2016 @ 08:26 PM | 3,045 Views
Vector, dragonlink , runcam,1.3 video
Very Smooth flyin airframe !
Posted by jetpilotrich | Jul 17, 2016 @ 08:13 PM | 3,478 Views
Hey Folks,

Just a few Pictures of the New GRUMMAN F8F BEARCAT from ELEVEN HOBBY & BANGGOOD.COM ....

This is sweet 1100mm model..... It Has an 850KV Brushless Outrunner, 40AMP ESC, Retractable Landing gear, Flaps, and flys great on only a 3s 2200 Lipo!

It is a very nice flying model.....

Here is the link: http://www.banggood.com/Eleven-Hobby...p-1064148.html
Posted by Tarmakin | Jul 17, 2016 @ 07:06 PM | 2,708 Views
Check it out and always please subscribe to my channel while you are there.

Livermore Flying Electrons Fun Fly July 2016 (4 min 5 sec)

Posted by No_N4me500 | Jul 17, 2016 @ 04:53 PM | 1,189 Views
Hello

I'm new to this website and the RC scene. I'm having a hard time trying to find out things about my RC car because I'm looking into some new upgrades for it as it has been living on a shelf for a year plus. I own a Flying fish. http://www.nitrotek.co.uk/rc-cars/el...car-24ghz.html (Lambo body) Good starter car. However I want to get some new wheels/rims and tyres for it but dont know if the ones that i would like would fit the car. Heres a link to the wheels http://www.modelsport.co.uk/hpi-te37...products/25309 . Heres the link to the tyres http://www.modelsport.co.uk/schumach...roducts/385221 . I dont know if they would fit or give good grip? Also would this motor help or is it necessary? https://www.amazon.co.uk/RCECHO-HOBB.../dp/B00LN2R7QY . If you could answer me it would help alot as I would know what to save up for.

Thank you.
Posted by dmrcflyr2 | Jul 17, 2016 @ 04:46 PM | 5,168 Views
I began the break in of a NIB Magnum engine today. This is an engine I purchased here on RCG. It is the second XL30 I have owned. I have read very mixed reviews about this particular engine as far as quality issues and running performance. Now the first one I had I was unable to ever get it to hand start. Eventually I sold the engine. Aside from the non hand starting it was a good running engine. I replaced it with an OS FS-30 which hands down is a superior engine.

When I saw this one NIB for a price I was willing to pay I jumped on it. Today I began the break in of this engine. From my past experience I had reservations about whether or not I could hand start it on the first tank of fuel. Now one of the issues with this engine, and other Magnum engines, is the lack if a throttle stop screw. This makes it a bit harder to determine when the throttle barrel is open enough for starting. That was my issue again today and after a few flips I resorted to the electric starter.

After several tanks of fuel I was able to hand start this engine and the break in is well underway. The first video of the initial run is somewhat boring as I kept it at a constant rich setting. I have attached the video montage of subsequent runs. It seems to be a really nice running engine.

Magnum XL30FS Break in clips (7 min 54 sec)

Posted by pdooley | Jul 17, 2016 @ 04:14 PM | 21,392 Views
Not very well known heli, but decent quality. A few quirks, a few things I don't like, but overall a good buy at the sale price paid. Purchased during an epic HobbyKing sale, a few of us on RCG participate in a dedicated thread.

My build is currently configured for low head speed, 1100-1300rpm 5S-6S.
Components are:
TIG 600mm CF main rotor blades
Gartt 550 FBL head
Align 600 swash
Turnigy HeliDrive SK3 520KV motor
Specs.
Turns: 12T
Voltage: 10S~12S Lipoly
RPM/V: 520KV
Motor Poles: 10
Internal resistance: 0.0214 Ohm
Max Loading: 70A
Max Power: 3100W
Shaft Diameter: 6mm
Shaft Length: 31mm
Screw Mounting Spacing: 25mm/30mm (M4)
Weight: 394g
Motor Plug: 4mm Bullet Connector

YEP 100A LV ESC
Turnigy 625BL swash servos
Turnigy 605BL tail servo
Yellow Kbar
Orange 615X Rx
lipos(all Turnigy):
6S 5000mah 20C
5S 5000mah 20C
6S 3000mah 40C

Future setup will be 8S with 2 Turnigy 4S hardpack lipos in series and Rotorstar 120A HV ESC. Head speed around 1800rpm.

Frenzy 600E 5S hover (6 min 20 sec)

Frenzy 600E Flight 4 Inverted (6 min 11 sec)
...Continue Reading
Posted by FWAL | Jul 17, 2016 @ 02:42 PM | 10,148 Views
The 15mph SW wind was full of sea mist which rolled up the headland in thick tracks. At times you could see half a mile and within a few secs the visibility was down to a few metres. However, the conditions just suited the Dream Flite Libelle perfectly and I had one of best half hour soaring sessions ever. Low, close and full of varying manoeuvers.
The Libelle is just less cumbersome than either of my Traceur or Vagabond 3D soarers. It's a very refined, special glider.
Posted by KristofferR | Jul 17, 2016 @ 02:24 PM | 5,502 Views
My brushed Traxxas mini e-Revo (1/16th scale, MERV for short) tends to cook its supplied NiMH battery unless lots of care is taken to drive slow or make frequent pauses. The amp draw is simply too high.

I searched around and decided to buy a pair of LiPO batteries from HobbyKing and connect them in parallel; thus dividing the power load, increasing drive time by 3-4 times and getting the left-right weight difference balanced. The original NIMH is in the 1200-1500 territory and the choice I made was two Zippy Flightmax 2s 2200mAh. I think they will handle the brushed 12T motor with ease. Getting 4400mAh, less internal resistance and less heat should increase both speed and runtime.

As usual, all connectors are different depending on manufacturer. The Zippys have XT60, the MERV has Traxxas. The Tetons have Tamiya and my planes have Multiplex MPX M6; mainly because I have had a number of RR and RTF Multiplex planes.

I did not want to start supporting Traxxas connectors too so I spent some hours changing connectors and making a few adapters and a parallel Y-cable for the MERV LiPo set using M6 connectors. The NiMH from the MERV got a Tamiya connector to fit the kids Tetons and the HK crimping tool worked great to clamp the Tamiya pins.

The last thing I did was to bring out the multimeter and checking resistance of a few different adapter combos and all seems well. Looking forward to the test drive!
Posted by KatrinaRosen | Jul 17, 2016 @ 12:40 PM | 1,989 Views
AT&T plans to use drones to provide cell service at concerts. They have the idea to build cell extensions into drones and flying them. The service provider is already using drones to inspect the cell towers.
http://www.theverge.com/2016/7/13/12...source=twitter
Posted by scousethief | Jul 17, 2016 @ 10:36 AM | 2,478 Views
http://www.banggood.com/Eachine-Ripp...p-1068591.html



Description:
General
Brand Name: Eachine
Item Name: Ripple
Material: EPO
Wing span: 864mm

Electronic Devices
(Included)
Servo: 9gx3
Motor: RA3536-1300KV
ESC: 40A with reverse function
Propeller: 8X4

Recommended Parts
(Not Included)
Radio System: 4CH,Click Here
Battery: 3S 2200mah or 2600mah T plug,Click Here
Balance Charger: Click Here



Recommended FPV Equipment
(Not Included)



APM Flight Controller Set 2.8,Click Here
Eachine 700TVL 110 Degree Lens Camera,Click Here
Skyzone FPV 5.8G 32CH 7 Inch Monitor,Click Here
Eachine TS832 5.8G 32CH 600mW TX,Click Here
Eachine RC832 5.8G 32CH Receiver,Click Here
5.8G Gain Petals Clover Mushrooms,Click Here

Dimension and Weight

Overall Length: 1168mm
Flying Weight: 1050g
Package Weight: About 5kg


Feature:
Easy to assemble
ESC with reverse function, provides more fun
Powerful RA3536-1300KV motor coupled with the 40A ESC,and all pre-installed.
Comes with FPV platform, enjoy FPY flying.
Ultra durable EPO foam construction
Upgraded package, minimize damage which may occur to the airplane
All terrain flight ability - capable of flying from water, snow, ice, grass and more

Note:
This item is the PNP version,not included the transmitter,receiver,charger and battery.
When switching the ESC to reverse mode ensure the motor has come to a complete stop before switching to avoid damaging the ESC.

Posted by AliB | Jul 17, 2016 @ 06:44 AM | 6,229 Views
I recently go the FQ777-124C MINI With 2.0MP Cam From Bang Good to review and test. So thanks BG

First off, heres the box it comes in




Open the box, and you receive a set of instructions, and the transmitter, which holds everything else
...Continue Reading
Posted by smfelton | Jul 17, 2016 @ 06:27 AM | 2,378 Views
My first battery on fpv yesterday. Wow it's harder than I expected, trashed all the props. I guess outside or a hall might be a more suitable location than the lounge. I became very quickly acquainted with the furniture, light fittings and curtains.
I think it's the lack of peripheral vision thats getting me, and what is an easy to fly, incredibly stable aircraft became what appeared to be uncontrollable.
Soo it's practice, practice, practice.........
Happy flying !!!!!!!!!
Posted by nitbeat | Jul 17, 2016 @ 04:55 AM | 17,920 Views
Chasing Glowing Helium LED Balloons with FPV Racer.
FPV System Pro-Sight 720p HD

I'ts super fun and challenging, you gotta try it once with your buddies

Midair LED Balloon Popping | FPV Drone | ProSight 720p HD view (1 min 45 sec)



I've bought 10pcs of LED Ballono lights for 3$
http://www.banggood.com/10Pcs-LED-Balloon-Lights-Lamps-Paper-Lanterns-Lamp-Home-Wedding-Party-Decorative-Lights-p-1027491.html





I've seen different small LED light options, but haven't tried them yet.


FPV Racer Setup

Frame TC-R220 Frame Kit 4.0mm
Flight Controller - F3 Flight Controller Acro
PDB - Matek Mini PDB With BEC 5V And 12V
ESC'S - DYS XM20A mini
MOTORS - DYS SE2205 2300KV


** It's better to check the lift force before letting the balloon go,
if it goes up too fast you should slow it down a bit by adding weight. I used Electrical tape.