Posted by newelectro | May 29, 2020 @ 05:24 PM | 3,779 Views
Roc hobby vtail to replace my phoenix
Posted by rclad | May 29, 2020 @ 03:50 PM | 3,781 Views
I've been wanting to try Pattern for a long time, so I finally bought a used 2m Black Magic to get started. It was originally set up with a glow engine and tuned pipe. The original owner took that out and sold the plane with a Plettenberg Xtra 30-10 Evo brushless motor.

While I put that together I've been practicing the Advanced pattern sequence. I finally have the sequence memorized and flew it correctly without a caller yesterday. My 104" Extra has a similar thrust to weight ratio and wing cube loading as the Black Magic, so it's a decent substitute, for now. At least to get the sequence down.
Posted by BSteeve | May 29, 2020 @ 11:38 AM | 4,196 Views
Got the engine mounted and the cowling cut. Happy with spacing. Ignition and throttle servo next.





...Continue Reading
Posted by Rama Rao | May 29, 2020 @ 08:32 AM | 4,189 Views
I acquired this Fleetwind-60 some time last year (2019). This 1946-made engine came to me with missing gaskets and broken insulating bush in the timer assy. Also, the needle was missing. During these (relatively) leisure times I decided to restore this engine and see how it runs.

Here is the video:

Fleetwind Vintage Ignition Engine's Restoration & Running (5 min 24 sec)

Posted by GroundControlRC | May 29, 2020 @ 07:30 AM | 3,863 Views


Glue & Fly™ Series - F-22 Nano V1 - Flight #8 - It's a Keeper ;-)

Tuned and ready to see it's capability ;-)

Banggood GCRC
https://www.banggood.com/custlink/GmDmQ1nVkO

Here is a link to the Video:
https://www.youtube.com/watch?v=6If-AqZv-as

Here are links to all the Components I chose for this Nano Parkjet:

***Motor
HappyModel EX1102 13500kv Brushless Motor (1.5mm Shaft - 13500kv)
https://www.banggood.com/custlink/3v3KUbNbSI

***Receiver I used (Make sure the Receiver you choose matches your Transmitter Protocol!)
Receiver 4CH Low Voltage DSM2 DSMX
https://www.banggood.com/custlink/DmvvqnbNIQ

***Servos (I have ordered these and the ones they sent did fit the Micro Receiver I have. These were JST-SH 1.25mm Pitch on the Connector)
2Pcs 1.7g Low Voltage Micro Digital Servo Mini JST Connector for RC Model
https://www.banggood.com/2Pcs-1_7g-L...47791920140372

***Prop
10 Pairs LDARC 2.5 Inch 65mm-2blades Racer Propeller(hole diam:1.5mm) M2 Screw Fixing For Toothpick FPV
https://www.banggood.com/10-Pairs-LD...47791920140372

I cannot find the DYS 7A OPTO ESCs any more.
I have just received this 7A OPTO ESC but I have not tested it yet.
***ESC
1-2S 7A Brushless ESC High Speed For RC Airplane
https://www.banggood.com/1-2S-7A-Bru...47791920140372

#GroundControlRC #GlueAndFly #ScratchBuildPlanes #GFSNanoF22 #GFSNanoF22V1


See you in the Air!

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

Ground Control RC™ Glue & Fly™ Series Scratch-Build Planes

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Posted by 1stGeppetto | May 29, 2020 @ 04:16 AM | 4,042 Views
Completed May of 2020. Glass over wood with finished with rattle can paint.
Posted by 1stGeppetto | May 29, 2020 @ 04:13 AM | 3,969 Views
Completed in September 2019. Polyspan covering, Nitrate Dope to attach and fill the weave, Butyrate Dope for colors.
Posted by 1stGeppetto | May 29, 2020 @ 04:09 AM | 3,630 Views
Completed in March of 2020. Mad Max meets Steam Punk.
Posted by Amanda BH | May 29, 2020 @ 03:07 AM | 3,312 Views
Brotherhobby Hyperbola 5" BNF drone , the frame is T800SC-24K carbon firber.

Mostly, the frame use T300 or T700 carbon firber on the market

Hope you can get more information from the attached pictures
Posted by Eric Zhu | May 29, 2020 @ 02:34 AM | 3,097 Views
AGFRC A81BHMW 45KG IP67 Waterproof Digital Steering Servo High Torque Programmable Full Metal Gear Brushless Servo for 1/8 1/10 RC Models, 180 Degrees

The AGFRC A81BHMW Waterproof Programmable RC Servo is an upgraded version of the A80BHSW Waterproof Programmable Servo, which overall improves the performance and quality. The maximum torque is increased from 36KG to 45KG, the strength of the bearing is improved, and the collision resistance is stronger, making this A81BHMW servo more suitable for applications in 1: 8 scale RC model such as off-road and climbing car, etc.

This A81BHMW servo is also a member of AGFRC PROGRAMMABLE SERVO, equipped with AGF-SPV2 servo programmer (included) which can change the torque, speed, angle, and other parameters of the servo what you want, even 360 full range angle or 720 angle, etc. It's really convenience for users to DIY the parameters of their servo according to the situation.

Moreover, the manufacturer will continue to UPDATE the various firmware of the A81BHMW servo, users can download the updated file from the manufacturer's official website to update it through the AGF-SPV2 servo programmer in the future.

Name: 6.jpg
Views: 4
Size: 2.62 MB
Description:

Introduction
  • AGFRC Waterproof digital servo uses high-precision production technology to reduce production deviation and improve product tightness, used IP67 Waterproof design, can be common use in RC climbing cars, 1:8/1:10 Buggy, RC boat, helicopter, robots, mechanical arms, and others RC model.
  • Good choice for
...Continue Reading
Posted by Nickerz | May 28, 2020 @ 11:32 PM | 2,960 Views
This morning, I bought a 2nd Great Planes PT-40 but this is the original PT-40 that came out around 1987 I think (whereas version 2, the MKII came out around 2008) and I bought this original version 1 from an RCGroups.com member. Total paid was...

$100.00 (Grand Total)
$100.00 (Plane ARF Kit, Engine & Radio!)
$Free (Shipping)
$N/A (Tax)

This is NIB and I wanted this to keep for nostalgic reasons since this is technically the plane I viewed in the two videos I had as a kid and wanted to buy back then but I felt building it would have been a little more than I was ready for. So now I have that chance and I got such a great deal on this as they go for $250+ on eBay! USPS shows the delivery date between TBD...

Here is the original classified ad...

I already have an engine for it too (NIB O.S. MAX .40-FP which is the original engine recommended in the manual and in the videos I watched as a kid!) I'll take pics and do an unboxing video once I get it. Here's a pic from the seller...


Posted by AlkaM | May 28, 2020 @ 08:56 PM | 3,362 Views
Many of you will be familiar with some of this already. I skip a lot of things about switching losses and current circulation in the motors. This is about how these two electrical variables affect real world performance. This is to hopefully give an idea of what PWM even is to those unfamiliar.. feel free to post your comments experience down below.
Motors are driven by voltage. In order to control the voltage that a motor coils "pulse width modulation" (PWM) is the process by which this happens. If you have a 12 volt battery and want to run the motor at half speed (6 volts ) you would use pwm with a 50 percent "duty cycle". This means half the time the switches are ON that drive the motors coils and half the time they are OFF.
Pwm frequency ( 24khz, 48khz etc) is the number of times per second that these switches are turned on or off. You could do pwm yourself and probably manage a few switches per second. So picture a toggle switch, when the switch is turned on the current starts to rise in the motor coils and the motor begins to move. When its off the motor will coast and begin to slow down. At a very low frequency like this you can see that it might be hard on a motor as the current goes through large swings with each turn on turn/ off phase. This current ripple creates heat in the motor coils and is a major power loss. To make it smoother you need to increase the frequency. Ideally, to switch fast enought that the current has not enough time to...Continue Reading
Posted by lawrence4 | May 28, 2020 @ 08:17 PM | 3,134 Views
Test use Beta75 pro 2,
Benefit from longer flight time and cooler motor.
More smoothly under 1S 0.5 startup power.

steps:
1.flashing the support bi-directional DShot firmware(for RPM filter),
download the latest firmware marked “48KHz”.
Firmware that allow to run RPM filter in BLHeli_S ESC for free JazzMaverick:https://github.com/JazzMaverick/BLHe...eli_S%20SiLabs

Firstly find out the code name of your ESC.
Connect to BLHeli Configurator.
You can see your ESC code name in the title, for example, mine Beta75 pro 2 is S-H-50 and download the firmware S_H_50_48_REV16_8.HEX

2.SETUP BETAFLIGHT RPM FILTER
Update your FC to Betaflight 4.1 or newer(for now mine is 4.1.6)

Use 4KHz gyro sampling rate and 4KHz looptime.DShot300 ESC Protocol.
Enable “Bidirectional DShot“, and set Motor poles (for example Beta75 pro 2 motor 08028 is 12 poles)

Under Dynamic Notch Filter:
(suggest)
Filter Range at LOW
Width Percent to 0
Q factor to 200
Min frequency to 90

If the motors are cool, it probably means you can reduce filtering further. But this time you can use the two sliders on the top of the filter tab – Gyro Filter Multiplier and D term filter multiplier.(I test it at 1.2 both)

Reference (details explanation):
1.HOW TO GET 48KHZ ON BLHELI_S ESC (MORE FLIGHT TIME ON TINY WHOOPS!): https://oscarliang.com/blheli-s-48khz/
2.SETUP RPM FILTER FOR BLHELI_S ESC (FOR FREE):https://oscarliang.com/setup-rpm-fil...-esc-for-free/
3.BLHeli Configurator:https://github.com/blheli-configurat...rator/releases
4.BLHeliSuite for BLHeli_S: https://github.com/bitdump/BLHeli (download link in the bottom “Read Me” section).
5.HOW TO SETUP BETAFLIGHT RPM FILTER:https://oscarliang.com/rpm-filter/
6.HOW TO FLASH/CONFIGURE BLHELI_S ESC:https://oscarliang.com/flash-blheli-...-pass-through/
7.Bidirectional DSHOT and RPM Filter:https://github.com/betaflight/betafl...and-RPM-Filter
8.HOW TO FLASH/UPDATE BETAFLIGHT ON FLIGHT CONTROLLER?:https://oscarliang.com/flash-update-betaflight/
9.ImpulseRC driver fixer download:
https://impulserc.com/pages/downloads
10.FIX FLIGHT CONTROLLER DRIVER ISSUES – CAN’T CONNECT OR FLASH FIRMWARE:
https://oscarliang.com/fc-driver-issues-flash-firmware/
Posted by stevster | May 28, 2020 @ 07:37 PM | 3,276 Views
Here's some pictures of my latest "Covid19 Build". It's a plans built, 1930, 1/4 Great Lakes Trainer 2T-1A
I really enjoyed this build. It was fun to detail. 80" span @21 1/2 lbs. Should putt around like a dream trainer.
Powered by a Sachs 2.4 gasoline engine on electronic ignition with a Sullivan smoke system built into the muffler.
Covered in original, uncolored, Super Coverite, stitched, rib taped, sealed with 2 coats of Minwax Polycrylic polyurethane,
then 2 coats of primer (with a sanding of a Scotchbrite pad between each coat) then finished it off with 2 coats of Rust-Oleum
Gloss Protective enamel. I made my own graphics on my wife's Cricut vinyl cutter. That's fun! Topped it off with a couple
off Bazzboe's (here on RCG) very cool 1/4 scale pilots at the "controls". Maiden coming soon!...Continue Reading
Posted by VicT | May 28, 2020 @ 04:04 PM | 3,128 Views
I purchased an open stock AR637T receiver a few weeks ago and finally got about 5 minutes of flight today (5/28/2020) after replacing the AR636 receiver that came with the Turbo Timber (TT). The TT had flown the day before and I had programmed her with 5 flight modes using the throttle stick as 1 switch for 3 modes and the D switch for 2 modes. Dual rates, expo, and mixing had audio working fine. I removed the 636 RX and white silicone from the foam and made a plywood floor for the 637T RX. I followed the installation manual and bound the RX to the TT program. I had to reverse the elevator and aileron servo direction. She flew the next day and without SAFE or AS3X I noticed my TT as being very sensitive and not forgiving like the 636 RX.

I had been following the manual included with the receiver and got this far before asking Dave A. HELP.......

Inyourtransmitter’smenu,select:
Forward Programming -> Gyro Settings -> First Time Setup The transmitter will prompt you for all setup steps.
IMPORTANT: Before proceeding with setup, read every information screen that appears on your transmitter
Select NEXT at the bottom of each page to continue.
3. Followtheon-screenpromptstosettheorientation.SelectContinueto complete the two-step auto detection process, or select
Set Orientation Manually. Verify the orientation is correct.
4. Youcanassignanyopenchanneltoaswitch(trimmer,knob,e tc)forgain, and assign that channel for gain. You can assign a switch to a channel from the Forward Programming menu so you don’t have to exit the menu. We recommend using a trimmer, knob, or slider for gain, which will enable you to change the gain value on the fly.
When the setup screens are complete select Apply.
3. AS3XTuningBasics:
1. Perform a control surface direction test, and AS3X reaction test.
2. Test fly the airplane to verify the configuration. In-flight trim changes do not require any further updates.
Posted by Justwingit | May 28, 2020 @ 02:27 PM | 3,430 Views
So I've been flying my E-flite UMX Cessna Citation Longitude as a belly lander recently...

WHAT A BLAST !!!

This thing is NUTS !
E-flite UMX Cessna Citation Longitude Twin 30mm EDF - This thing is NUTS! (10 min 44 sec)


Enjoy the show and I wish everyone all the best !