Posted by BAF23 | Jan 03, 2022 @ 08:45 AM | 57,557 Views
Year 2021

Early Januari 2021 I took the huge box containing a Windrider Boeing 737 down from the attic where it had been laying dormant for half a decade. After stripping all usable parts from my crashed Jetair B737 (go back to fall 2020 for details) I started to combine old and new parts to build a 90’s era SABENA airline B737-500 that could be used in powered or glider mode. I never expected it still would take 9 weeks to complete that simple foam model but I really liked the result.

Pic 5480c


To read the complete build log of my second Boeing you can click on following link:
https://www.rcgroups.com/forums/show...-Sabena-livery

End februari and early March we had a couple of exceptionally warm days and I took the Funcub XL to the field for a series of much needed proficiency flight after the winter. After the rusty fingers loosened up I also got the Viperjet in the air but the clay on the still wet field stuck to the wheels and was close to jamming the gear upon retraction so after a few uneventful flights I returned home. Post-flight inspection of the Funcub revealed some minor problems and as I for correcting those I had the model open, I decided the time was ripe to undertake the modification to definitely abandon the standard Multiplex look and travesti it into a 70’s era PA18 I used to instruct student pilots. After using a mix of yellow vinyl and blue paint I had in stock, and installing normal sized Cub wheels, nobody recognizes the original...Continue Reading
Posted by Rowhider | Jan 03, 2022 @ 07:59 AM | 56,548 Views
Hello,

Today a quick comparison between my two 4 wheels drived Rally cars:
TB01 Mitsubishi Lancer Evo V and my TT02 Subaru Impreza WRC 99

Tamiya TB01 vs TT02: Top 8 facts. Who is the best Rally chassis? (4 min 58 sec)

Posted by Old_Pilot | Jan 03, 2022 @ 07:05 AM | 53,926 Views
Got all the parts cut yesterday plus some extras...I even cut all the 1/8" sq secondary spars and 1/8x1/2 outboard spar caps.....I'll separate and sand today. Total cut time was a little less than 6 hours....I was cutting slow (40 in/min) and shallow (0.032" per pass) with a 1/16" single flute up-cut bit

I know I've said this before, but there is no way I could cut this by hand with the accuracy and precision of the router.....especially since I can nest parts and reduce the waste.
Posted by charlton29 | Jan 03, 2022 @ 01:49 AM | 53,678 Views
The final flights of 2021 had a 20-knot wind, a couple of inquisitive gulls and lots of sunshine. It was a bit of a wild ride, but tag along and enjoy!
Off with the Birds (6 min 3 sec)

Posted by scruffy1 | Jan 03, 2022 @ 12:05 AM | 52,720 Views
at least that's what i started with as a plan, but it always looked a little too stubby for my eye, and armed with my new laser (see the previous thread in the blog) and reckoning on the length of carbon rod(s) i have available, i cut (burnt?) a set of ribs that started at 16cm long and then got smaller as per the taper

initially i had wanted to use 2.5mm carbon tube for the leading edge, but my naive belief that it would bend like the 1/8" dowel specified was soon shattered (like the rod itself as i tried to see how much bend it could sustain, having had it detach from the carefully bespoke key in the wing tip after insufficient curing with the wrong choice of adhesive)

lesson learned - the hard way; i inserted some spruce 1/8" square where the carbon had been, after shaping it to ease the curve for the leading edge to attach to at the tip, and increase the hardwood bond for the ply key which will mount the throwing peg (pictures clarify this below)

so i thereafter glued the carbon tube spar with 20 minute finish cure epoxy, and the rest with the prep multi-adhesive that is perfect for most everything... but carbon

the wing tips were my first complex components made using the laser, and after a more elaborate initial iteration, i settled on a "simpler" design that worked out well - we'll see how well once it had to survive my launching forces
there is a shallow groove in both tip pieces to hold the carbon spar- in the original it looks...Continue Reading
Posted by ChillPhatCat | Jan 02, 2022 @ 08:47 PM | 51,423 Views
It’s been a while but I am getting psyched for my latest build… and I am still obsessed with biplanes, and my Pitts is still going strong without mishaps… it’s just a fantastic plane.

Anywho, I have been trying to move into bigger airframes and have finally taken the leap. I had Balsaworkbench (Rob) cut me a short kit for the Bowman Ultimate which is on outerzone… it’s a 28% 10-300 plan and designed for 30cc class gassers.

Well, no offense to Darren but it’s a sport scale plan (which is totally fine) and doesn’t fit the dimensions perfectly and, well, I simply can’t leave well enough alone in the first place… the plane has a 64 inch span and is 66 inches long… it’s basically too short, and I also didn’t like the turtle deck which is not parabolic rather just has a circular cross-section at the top with straight sides… and the sides of the fuse themselves are completely flat whereas the full scale plane has more of an inverted trapezoidal cross section.

Anyway what really set my insanity off was that I realized that 64”WS and 66”L was dead on for a 33% 10-200. So now I’ve taken notes and studied 3-view drawings to the point my wife probably thinks I’m nuts and I have scrawled all over my plans like I’m building Devils Tower out of mashed potatoes.

This is a rough list of what has to happen… Add cheeks to the central fuselage box to expand the from 8 inches to about 12-13 inches at the top tapering down to about 9 inches at the bottom and following suit...Continue Reading
Posted by BEC | Jan 02, 2022 @ 06:52 PM | 51,482 Views
In my previous post and a couple of comments added to it, I waxed enthusiastic about driving an EV and I still love doing so. But the particular EV we have is now suffering from noticeable battery degradation, with projected range on a full charge (in the the chilly Seattle area in January) down to around 50 miles.

Kia, in theory, warrants the battery (and the rest of the electric power train) for 10 years and 100,000 miles to at least 70% state of health. The car is a little over five years old and has less than 52,000 miles on it at the moment, so we’re within those limits comfortably. In using a third-party tool that talks to a bluetooth OBDI reader, I can see that the average state of health of the 400V (!) LiPoly pack is hovering right around that 70% point right now, with most all the degradation happening in the past year. So….in theory, all I have to do is get this verified by the dealer and they will order the new pack and away we go.

However, last time I was at the dealer (a software update/recall) they warned me that actually getting a replacement battery was taking a very long time (can you say “supply chain?”) so I have no idea, right now, how long it will take once the state of health falls below 70% and they verify it.

I will say that how Kia (corporate, Kia USA, and the dealer) actually handle this will determine if I will ever buy another Kia of any sort or not. I’ve already lost access to the remote functionality through my phone since the car...Continue Reading
Posted by dangerdan | Jan 02, 2022 @ 04:43 PM | 49,065 Views
I spent 7 long days trying to solve this problem.
I wanted modified WAV files for my X10S. All I got was static and that was due to a wrong Bit sample option.

I wanted a permanent record, just incase me or others have this problem.

I went to the the original WAV files in Explorer and under Properties and Details tab, found the Bit rate was 512Kbps.
I then checked my new/modified files in Explorer and found they had a Bit rate of 256Kbps. Definitely a mismatch.

In TTSAutomate.3.1.0.1 under Voice options, I changed the Sample Rate from a high value to a lower one till I got a sample
rate of 512Kbps under Properties and Details tab in Explorer.

Problem solved. No more STATIC

All files now have a Bit Rate of 512Kbps.
TTSAutomate 3.1.0.1 Voice options are for a Sample rate of 32000 HZ and Bits per sample of 16.
Posted by Alan 3D | Jan 02, 2022 @ 01:02 PM | 52,169 Views
I have talked a number of times about how do you detect interference. One of my jobs used to be doing just that. Working in the industrial radio communications industry sometimes on towers as high as 2000 ft. I had $30,000 test equipment that I could do spectrum analyzations and more. So I do have work experience in the matter.

When I was in the industry and the equipment was being interfered with, all I had to do is disconnect the antenna cable from that equipment and connect it to my service monitor and see if it was interference there potentially interfering with this equipment or was it something more simple like a bad antenna, cable or connection.

What is different for Us RC pilots is where the interference is.

As an RC pilot I have seen many aircraft go down but only a few as a result of radio interference. Most of the time other than pilot error the aircraft went down due to a failure was because of the power source to receiver, defective equipment or bad installation, antenna orientation and placement and second would be mechanical failure. A distant last would be radio interference. Rare but does happen with equipment that usually is deffective or of very low quality. A system that is not working to its best is more susceptible to interference. Sometimes it takes two devices to add up to a failure. It could be a combination of both receiver and transmitter. Swap out one item and problem may go away. One example for me was I was using an aircraft...Continue Reading
Posted by Eternalflight | Jan 02, 2022 @ 11:14 AM | 45,815 Views
Pulled off all the 2.4Ghz analog FPV equipment off and installed the DJI FPV HD. Thought I would end up losing the boat as this lake seems to be full of Asian Carp. GoPro 7 mounted to the front.

DUMAS WINDY - FPV ELECTRIC AIRBOAT (3 min 13 sec)

Posted by Eternalflight | Jan 02, 2022 @ 11:02 AM | 45,461 Views
Christmas Eve day and we are experiencing unusual warm weather nearing 70*. With winds out of the SSW at 30mph. I charged up two of my slopers the night before. Fults Hill Prairie Nature Preserve (Fults Hill) in Illinois is one of the closest destinations for slope soaring in the Midwest. I brought the Gabby 2-meter, full house composet sailplane that I have own since 2008. The plane has gone through hell and rebuilt many times. The KA-8, 2-meter, 3 channel, foam airplane been with me for a while also and used mostly in winds 10-15mph. I never did fly this day the KA-8 as I had the Gabby up for over an hour and the winds never slowed down enough. Fults Hill is usually covered in 3' tall Prairie grass and honey suckle bushes scattered about the hill. A resent burn to hill and honey suckle removed was nice to see.

SOARING FULTS CHRISTMAS EVE (5 min 7 sec)

Posted by Alan 3D | Jan 02, 2022 @ 10:25 AM | 45,065 Views
This thread/blog pertains mainly to remote control aircraft equipment at least within the early 2000s and present. It pertaining to programming only and not actual installation which is another subject altogether.

There are many brands of RC remote control equipment. Some have similarities and some not so much. We are not going to go in to detail but rather hit the more basics of equipment pertaining mainly to aircraft but I suppose could also pertain to some surface RC vehicles as well.

Some transmitters and receivers are limited or have no programming parameters. Whereas other RC equipment has many programming parameters. You do not have to know all of them but you should know the most basic and the most helpful programming aspects of these devices.

Programmable transmitters and receivers. Those that are programmable tend to have certain features which may include

Gyro stabilization settings
Auto leveling
Fail safe
Rate
Exponential
Priority
Heading hold
Flight Mode
Aircraft types typically five types
Dual ailerons
Dual elevators
Dual Rutters
Dual motors
These settings may be in transmitter or receiver.

Trims
Servo Travel
Servo speed
Timers
Alerts
Mixes
Swash plate
Gear / auxiliary
Flaps
Dual Flaps
Air brakes
Ignition kill
Retrax
Just to name some but not all settings.
These settings tend to be in the transmitter only but are not limited to these, in fact there can be many more settings for example telemetry settings and so...Continue Reading
Posted by Old_Pilot | Jan 02, 2022 @ 08:24 AM | 41,074 Views
One of my favorite parts of building......I should have all the parts cut this morning
Posted by Jack Crossfire | Jan 01, 2022 @ 10:24 PM | 46,567 Views
So the last run of 2021 was an 11 miler in 42F. 2022 began with .25 miles before the paw controller died. The steering & throttle cross talked & it didn't charge anymore. Cracking it open revealed a pool of water under the PIC. So the water wicking idea didn't work. 11 miles in a sweaty lion paw must have caused a lot of condensation. Sitting in the charger didn't dry it off, probably because of the paper towel was soggy.

It did relatively better without the paper towel & with the fabric tape. It might be worth wrapping the fabric tape as thick as possible before the inductor dies. There could be a new charger with the electromagnet exposed instead of under .8mm of PLA.

Hot glue might be a better coating than polyurethane. It's been coming off easier for reworking & might just be 1 tool away from being as easy as air. It's not clear how well it keeps water out.
Posted by Alan 3D | Jan 01, 2022 @ 06:09 PM | 45,869 Views
I go back a ways in remote control first using 72 mhz in the US and my transmitter and receiver was am. then came FM and pcm. The problem for me was I could get easily knocked out of the sky even though I was the only remote control aircraft in the whole area. Was not even a flying field nearby because I was flying over the ocean. Problem with that is the ships going by use radar and ship to shore radio's which is more than enough to interfere with the 72 MHz radio which had no frequency hopping. Other radio transmitters could also interfere with 72 MHz including other RC radios.
Do not confused 27 MHz RC aircraft with 72 mhz. 27 MHz is a very low grade toy aircraft. They may work but can very easily be interfered with. Both 72 and 27 MHz uses a long extendable transmitter antenna which if you forget to extend could lead to a crash. And the aircraft antenna is usually hanging out the back because of its extra long length especially on smaller aircraft on 27mhz.

Fast forward to now the most common systems today use 2.4 GHz. The first thing you may notice right off the bat is there's no long extendable antenna like there was on the older 72 and 27 MHz transmiters. No long antenna to extend. Antennas are very short especially on the receivers where space inside the aircraft may be limited.
There are many different grades and quality radios using this radio band. There is toy grade usually under $100 and there's hobby grade which you can spend any amount from a low...Continue Reading
Posted by MrMPX | Jan 01, 2022 @ 02:57 PM | 45,513 Views
A twist I have. Needs fuse work.
Posted by NobatteryNopower | Jan 01, 2022 @ 02:04 PM | 46,072 Views
***update jan 17 2021*** I think I got PPM-in (head tracking decoding) working simultaneously on the Arduino, eliminating one PPM-to-PWM converter. I need to test it first. When all works as expected, I'll update the code.

I managed to get two affordable Aliexpress Hall sensor pedals working with an Arduino + PWM converter to output a PPM signal over 1 CH. And also added a potentiometer PWM signal for steering/CH2. Adding a Head tracker is also possible when using two PPM-converters.

Code at the end of this post.

- To do for 2022: Learn how to implement headtracker PPM signals

Name: PedalsPlusSteering2.jpg
Views: 15
Size: 1.61 MB
Description:

To do:

- Order steering wheel
- Order/build a nice housing/case/box to make a steering column.

Parts list:
- Arduino Every | Approx. $10 (I gave up on clones, none I ordered worked. Please post link if you have good experience with some. https://store-usa.arduino.cc/product...ino-nano-every
- Two pedals | Approx $13 each https://www.aliexpress.com/item/1005002289824421.html
- Pwm-to-PPm converter | Approx. $10. You'll need two if you want to add head tracking. https://www.aliexpress.com/item/33060168390.html
- 10K or 20K potentiometer as a steering sensor
- Bearings | Make sure you order the right size for the steering wheel shaft.

Below this line, either buy it or DIY:

- Steering wheel | Approx. $23 https://www.aliexpress.com/item/1005003543813842.html
- Steering wheel adapter | For a Go Kart steering wheel, mine was approx. $16 https://www.aliexpress.com/item/...Continue Reading