Posted by Jack Crossfire | Sep 28, 2021 @ 11:38 PM | 24,643 Views
It occurred to the lion kingdom that the use of self tappers as load bearing farsteners has been a disaster of biblical proportions. The latest thinking was to use captive 4-40 locknuts & hot glue to farsten the locknuts. The new motor module still managed to have acceptible tolerances with the .8mm nozzle.


The hot glue actually seemed to work. If it got in the way, it managed to be compliant enough for the screw to not push it out. The captive nut walls are still too thick. The nuts aren't going to break PLA. It's going to compress.

The mane unknowns are if the 4-40 bolts are going to stay on as well as the self tappers did & if the motor will find another way to stall when it overheats or if it'll just destroy itself.
Posted by Calypso6858 | Sep 28, 2021 @ 10:14 PM | 23,234 Views
Wittman Tailwind: Sylvester Wittman (Steve to most, but Sylvester just sounds so much cooler) was an icon of racing for longer than almost anybody. He raced his first race in 1926 in a Standard J-1 and continued to race until he was in his 70s.

Wittman was all about efficiency. (if you overlook his first airplane, the Harley powered Hardley Abelson) Through his career Wittman designed a whole array of super efficient airplanes. A lot of them won Formula One races or Formula V races. (a racing class he started) But he also designed a handful of airplanes that weren’t intended for racing.

Before WWII Wittman decided to build a design that would be more efficient and outperform all the other light two sweat airplanes like Cubs and Champs. The “Buttercup” was born and it was a two seat, side by side, little ship with a C-85 up front. The little “Buttercup” cruised at 125mph and if properly used could operate out of shorter runways.

After the war, Wittman went for a redesign. The new airplane did away with the leading edge slats that the buttercup had, had a new fuselage and incorporated a number of other minor updates. Simply put, the “Tailwind” (originally named the “Flying Carpet”) hauled ass. The Tailwind was the recipient of increasingly large engines until it was cruising near 200mph.

The airframe also received several updates. The Initial W-8 Tailwind was updated into the W-9 which used different engines, props, incorporated larger fuel tanks and had an option...Continue Reading
Posted by Calypso6858 | Sep 28, 2021 @ 10:03 PM | 22,961 Views
Piel Diamant: Claude Piel’s Emeraude had proven to be very successful by the 1960s and the time was ripe for a larger version. Piel used his proven formula and just enlarged the design of the Emeraude.

The Diamant followed the lines of all of Piel’s other designs with it’s elliptical wing and bubble canopy. The tail feathers re-used the old shape and were just suited to the larger design. As usual with Piel’s prototypes, the first Diamant was extremely lightweight and powered by a tiny C-90 Continental.

The big bubble canopy accommodates the front two seats like the Emeraude with each having a set of controls. But the Diamant added a rear bench seat which could theoretically accommodate two more people. In practical use it was used more for one adult or two children, but it gave the airplane a more usable cabin either way.

The Diamant never reached the major success of the Emeraude but it was probably Piel’s second most popular design and had its fair share of builders. By the time the plans really hit the market the vertical fin and rudder had been exchanged for a swept design similar to the late Super Emeraudes. The vast majority of the Diamants and Super Diamants airworthy today have the swept tail. They also are almost all powered with larger engines up to 180 and 200hp Lycoming O-360s.

While the Diamant is a rare sight in the US today, it is not as infrequently spotted in Europe. The prototype is still in airworthy condition in France with a little...Continue Reading
Posted by PittSpecial | Sep 28, 2021 @ 08:22 PM | 23,726 Views
Just an amazing day and early evening today. Tuesday September 28th was indeed a majestic time with my GWS Beaver.

This GWS (Grand Wing Servo) Beaver is pushing 18- years old.

Powered by the Mega 16/15/8-turn direct drive In-runner (discontinued), while swinging the APC 10 X 6 Slow Flyer Propeller and using a 2-Cell, 1,000mAH, Lithium Polymer battery.

I was able to carefully juggle my Transmitter held by a lanyard and my Apple I-Phone 6S-Plus while on Video mode and recorded a few seconds of my Beaver in action with perhaps nothing more than 4-MPH breeze at 6:43pm this evening.

GWS Beaver with Mega 16/15/8-turn brushless and APC 10X6 Slow Flyer (0 min 56 sec)

Posted by RC Roundtable | Sep 28, 2021 @ 07:19 PM | 20,880 Views
Episode 137: "Radio Silence" is now live!
http://www.rcroundtable.com/podcasts...pisode_137.mp3

In this episode the gang shares all of their fun stories from the NEAT Fair and Bomber Field events.
-NEAT Fair debrief (1:55)
-Terry's big mistake (25:35)
-Gifted Amptique (39:35)
-Modelair-Tech rebirth (52:40)
-Jets and B-17s at Bomber Field (57:25)
-The RC Geek (1:15:50)
-Richardson Swap Meet (1:36:55)
-Crash Hancock's Phlat Printer (1:43:15)
-BEST Eve (1:51:25)

You can visit our website at RCRoundtable.com to listen over the web or download an MP3 of the show. Or, you can subscribe to RC Roundtable on iTunes.

We would love to read your comments and ideas. Please drop us an email: [email protected].
Posted by Darryl Miller | Sep 28, 2021 @ 06:51 PM | 20,790 Views
The Story behind my Waco Taperwing
Well, I have been not only a full scale pilot, but an RC pilot for a long time, and if there is anything I have learned about other aviation enthusiasts, is that we ALL have a favorite type of airplane! (or two, or three, etc, LOL) For some it is a war bird………others, jets, and still others love the aerobatic or antiques or classics…….well, you get the picture. Me? Well, the P-51 has always topped the list. I have had 4-5 models of the Mustang, some flew well……..others had a very short life. No matter what projects are in my head……a P-51 isn’t too far down the list.

However, My Dad and I also had a penitent for the classics. Stearman, Stinson, Howard, Navion, Cubs, Taylorcrafts, etc. We loved the older planes. Back in the 70’s and early 80’s my Dad and I would usually plan a yearly trip to Oshkosh, WI for the annual EAA convention and spend a day or two ogling the home builts, war birds, and of course, the classics. One of these classic bi planes was a certain Waco Taper wing flown by Bob Lyjack, “The Flying Professor”. He would perform every day in the air show and we would watch in awe as he gracefully wrestled that big, beautiful red and white Waco around the sky! One could not lose sight of this aircraft as the thick trail of smoke always lead to that big growl of its radial engine. Take all the other planes if you want……...Continue Reading
Posted by Justwingit | Sep 28, 2021 @ 06:26 PM | 20,044 Views
This is the maiden flight of master modeler John Morgan's last build: an 84" wingspan Vought SB2U Vindicator. John passed away last September when the model was roughly 60% finished. John's widow gracefully allowed the model to be transported across the country to be finished. A team of friends and highly skilled RC airplane modelers completed the job and this is the culmination of their efforts to finish the model in honor of John:
John Morgan's last build: the Vought SB2U Vindicator - Maiden Flight (4 min 28 sec)


Please enjoy this tribute flight, and thank you so much for watching...
Posted by thomasfrey | Sep 28, 2021 @ 12:55 PM | 20,152 Views
I'm looking for a new motor. I cannot find any spare parts. Does anybody know how the help? For Eachine Razor. I have that Lion battery that came wirh the RTF version. It's only a 2 cell with 7.2 volts but I need the same original strong motor. Anybody any suggestions?
Posted by unboxingexp | Sep 28, 2021 @ 11:59 AM | 18,134 Views
Happymodel's EP2 ELRS receiver is perfect for small FPV drones like tinywhoops. It measures only 10x10mm at 0.4g weight. You do not need an extra antenna as this RX features a SMD ceramic antenna providing plenty of range.
Happymodel EP2 ExpressLRS receiver (2 min 17 sec)

Posted by gquiring | Sep 27, 2021 @ 07:01 PM | 21,387 Views
Really nice weekend for flying and I finally got a group shot of our sailplane members.

Left is a YellowJacket 3.5, Center is a Pulsar 3.2 and right is a K3600
Posted by steevie | Sep 27, 2021 @ 01:49 PM | 20,856 Views
Hello everyone,

Next video from September 2021. Helicopters are in the spotlight

1) Alouette II - September 12, 2021 / Pilot : Lionel H. / Cameraman / Steve G.
2) Lama - September 12, 2021 / Pilot : Alain K. / Cameraman / Steve G.
3) Soxos 600 - September 12, 2021 / Pilot : Yann M. / Cameraman / Steve G.
4) LOGO700 - September 12, 2021 / Pilot : Joël F. / Cameraman / Steve G.

Heli RC Alouette II (3 min 35 sec)


Heli RC SA315B Lama 1:3 Scale (4 min 26 sec)
...Continue Reading
Posted by aben71 | Sep 27, 2021 @ 06:00 AM | 23,439 Views
Posted by Jack Crossfire | Sep 26, 2021 @ 03:59 PM | 29,729 Views
The answer is yes. Running a swamp cooler hydrated the TPU. It's not an internet myth. Swamp coolers, bathroom exhaust, & rain storms destroy TPU. If TPU absorbs water, it makes structurally weak prints. You can get away with baking it in an oven & storing it outside, but best results are going to require food dehydrators & enclosing the printer.

The lion kingdom is keen on making a dehydrator out of a peltier cooler & heat sink. A peltier cooler is seen as a more useful heater than a resistor, since the cold side can extract water. In this case, all the air in the filament chamber would be recirculating over the heat sink with the goal of manetaining a certain temperature. If the chamber is too hot, the peltier shuts down. If the chamber is too cold, the peltier turns on. The only fresh air comes from the cold side of the peltier junction. If the cold side is above a desired temperature, no new air enters. If the peltier junction is below a desired temperature, new air enters.


The theory is this system gives off heat on the outside of the chamber. There could also be a way to switch between outside & inside air for cooling the heat sink. It requires both temperature & humidity measurement. A dehydrator isn't as efficient at making water as a water generator though. A dehydrator has to be concerned with the humidity of its exhaust while the water generator doesn't care about the humidity of its exhaust.
Posted by RCWorks | Sep 26, 2021 @ 03:57 PM | 26,707 Views
For 6 years or so I have produced a tachometer for the X2/Harbor freight mini mill.

This year the prices for the parts has really gone up. So much that I think the product is a goner.

I made them for something to do since I'm home bound and it's better than watching TV. They were not a "hot" seller but they did keep me in cutting tools and metal for my own projects.

I will make 10 new kits at the price that keeps my cut the same.(No raise for the debt slave.) If they still sell at the same pace I will continue to make them, if not I'll just figure the powers that be said it's time to quit.

Sad as it seems days of TV watching may be in my future.
Posted by unboxingexp | Sep 26, 2021 @ 11:54 AM | 26,501 Views
My new favorite 1s AIO board for Toothpicks and Nanolongrange FPV. It gives you way more power!
BETAFPV F4 1S 12A AIO Brushless Flight Controller (2 min 6 sec)

Posted by eagle60 | Sep 26, 2021 @ 10:39 AM | 26,326 Views
Another sample of what it is possible to get with my "modified GLH II wings". Wings have been covered with obeche and the fuse is a little bit stronger, so the weight without battery is 460 gr.

In the video the first flight was made last week, but unfortunatly I came in for landing too fast (I knew it was too fast but I did not want to go around for another approach) so the plane jumped anf flipped breaking the tail. Just a little hot staff and this week I made the second flight you see in the video, this time the approach has been slow enought, but I can assure you it could be slower. The final part shows how little throw is needed on elevator (and this is valid also for the "4 days" model).
The videos have been made with my phone and no zoom so part of the time you do not see the plane, but you get an idea of the speed anyway.
I made also 2 more videos with zoom, but the sky got cloudy and the light was not sufficient for the autofocus and on the top the plane was quickly disappearing on the grey background.

nearly a racer (6 min 10 sec)


Features:
wingspan 84 cm
length 65 cm
weight 460 gr without battery
motor NTM 2836 3000kv
ESC 60A
Prop 5.5x5.5
battery 2200mAh 3s 60/120C

The speed computed with the doppler system is 220/225 km/h but being passes too distant for a "real" reading I can estimate it around 240/250 km/h.
Posted by Blaze0021 | Sep 26, 2021 @ 09:33 AM | 25,536 Views
This is first Evening Flight of my newly acquired BNIB (discontinued old-stock) Eflite Pawnee Brave Night Flyer 1.2m BNF Basic.

Eflite Pawnee Brave Night Flyer 1.2m BNF Basic - First Evening Night Flight (6 min 30 sec)

MODS & TUNING:
1) Flaps Installed (Spektrum A330 9-gram Servo x 2)
2) APC 11x8.5e Prop and Dubro 1.75” Spinner Installed
3) Parkzone Mosquito 3.25” Soft Light Foam Wheels Installed
4) Ailerons set to maximum deflection on servo arm and horn
5) Elevator pushrod set to second from outermost hole
6) Rudder pushrod set to second from outermost hole
7) Using Pulse 3S 2250mAh 65C Lipos (186 grams)
8 ) 2 Coats of Minwax Satin Finish Polycrylic applied to airframe

This Pawnee is simply magic. I was at first apprehensive about flying this at night but as soon as I saw how effective the lights were, I was excited to get it up in the air. It simply glows and there’s no mistaking it’s presence.

The Pawnee Brave Night Flyer is definitely not a rocket ship, nor does it have unlimited vertical. But it excels in presence and demands finesse in the pilot to make it look the part in the air. I’m loving the fact that it actually pushes me to make it look real.. from the takeoff, coordinated turns, proper application of throttle when needed, and buttery landings that make you want to be in the pilot seat.

A plane that teaches me a new appreciation for flight is definitely value in my eyes. The fact that it completely lights up is just an added...Continue Reading
Posted by Julius7009 | Sep 26, 2021 @ 04:16 AM | 26,438 Views
Hello! My Hobbyking HK-GT2B Controller is not working properly, the steering randomly stops working and randomly starts working if re-paired with receiver. I have had this problem a couple of weeks now i cant drive my RC car because of this. I've been scourging forums but cant seem to find anything

PLS HELP!!

JuliusH
Posted by NobatteryNopower | Sep 26, 2021 @ 03:19 AM | 27,204 Views
Part 2

- Made some inner boards/decks to accommodate all electronics. Mostly 5V & 12V BEC's and two PDB's. I want to have most if not all devices their own power supply to increase redundancy.
- Upper deck dry fitted and braced so it doesn't drop down while constructing.
- To do: Install Matek F765-WSE wich is en route with the mailman
- Must finish the two masts to accommodate camera, VTX, Actioncam, pan/tilt and a bunch of antenna's probably
- I still need to order a serial transmitter like a 3DR SIK Radio or clone for telemetry & wireless connection to the Ardupilot Ground Station laptop.
- Learning how to use Ardupilot
- Paint the whole thing in a nice color. (I like orange)
- Glue the deck in

The battery is either/or two 4S/5000 Lipo's or a 12V/17000 Lead battery. Probably the lead battery is either way going to be used as ballast to stabilize the whole thing. It floats quite high due to low weight....Continue Reading
Posted by GEMFAN ts | Sep 26, 2021 @ 12:26 AM | 24,974 Views
You wanted it… YOU’VE GOT IT!
Official SBANG (X-X-X-X) Props by Gemfanhobby and Faroùk Fpv!
Can you guess what the size and pitch is going to be? Comment down below ️!🔽🔽