R/C Blogs - Page 5279 - RC Groups
Shop our Airplanes Products Drone Products Sales
Posted by Shogun | Oct 08, 2006 @ 10:15 PM | 5,460 Views
Mixer Board from Century
Posted by rhagen | Oct 08, 2006 @ 08:14 PM | 16,242 Views

Put in a lot of time today, am getting close to a flyable plane. I probably won't get the canopy on by tomorrow afternoon, but will probably take it to the field and run the engine and taxi test it.

Anyways, here's what I did today.

Got the cowling cut and fitted, what a pain! Had to cut more than I wanted just to be able to get it to fit over the cylinder. Looks pretty good though.

Put it all together and checked the CG. Had to add 3 ounces of lead to the nose to balance it.

Put in the fuel tank and hooked up the lines. Set up the throttle linkage in the plane and on my radio.

Used silicone to seal the gap between the wing and fuse.

Put the decals on the wings.

Did a lot of other little piddling around things - man the last 10% sure takes 90% of the time! I should keep track sometime how many times the engine has to come on and off the mounts in the process of getting everything riggged up - must be at least half a dozen times.
Posted by Art Newland | Oct 08, 2006 @ 07:57 PM | 12,484 Views
Our band is going well, here is a new picture. We have a big fund raiser at our church next month.
Posted by Air Midi | Oct 08, 2006 @ 04:29 PM | 7,299 Views
I got to test my parachute drop today, and it was pretty fun. Luckily the wind shifted and it did not go on the roof.

Video of parachute man (31.5 MB)

Smaller file of same video
Posted by diogolopes | Oct 08, 2006 @ 03:34 PM | 5,594 Views
Hi guys,

i have been finding as much fokker DV II resources as possible for a new project for more than 1 year now...

This project was started almost two months ago.

At the begin, it walked so fast, but got hanged while i performed some new reasearch on some scale details, finishing methods, and some other stuffs....

The plane is 1.30metres wingspan (upper wing) and probally will weight around 1.5kg when finished.

I am intended to use an emax motor (1.4kg of thrust).

it was covered with monokote (red) and oralight (white). The decals were made from black vinyl..

It is almost 80% done, and i hope it can fly as much good as much work i am putting on it...

That's it,

Here are the pics:...Continue Reading
Posted by questtek | Oct 08, 2006 @ 03:04 PM | 32,366 Views
A majority of my work related to RC boat video has been wireless re-transmitted video. I have built small research vessels with up to 4 onboard video cameras, including underwater cameras, that send siglals back to a remote station via a 1.2 Ghz or 2.4 Ghz microwave link. Viewing the received image in sunlight has always been difficult so I thought I would experiment with putting a tiny but high resolution camcorder that records to SD memory card onboard. (It also as a digital image stabilization feature) I used a special optical glass dome to house the tiny digital camcorder and make it totally waterproof with minimum weight. The camcorder LCD on the side permits me to view alignment when mounted to the boat. The black button on the back of the housing is the start switch. I can confirm the camera is recording by the LCD screen also. I designed the unit so that it could be easily removed via 3 stainless twist fasteners.

The Camcorder module is mounted to the front of a motified fiberglass cat. I am running a large brushless outrunner motor turning either an 8 or 4 bladed 10x8 prop. I use an 8000mAhr LiPo 4 cell pack for power. All the electronics and battery are easily accessible via the twist waterproof hatch. If anyone is interested, I can post some video. Hope this stirs some creative brain cells.

Best, Professor Joe Valencic
Posted by questtek | Oct 08, 2006 @ 02:52 PM | 27,811 Views
There is a large interest in airboats on various RC forum sites. Most airboats use gas engines with a few starting to use brushless electric motors. I have recently been experimenting with brushless ducted fans with GREAT success. The attached pics show an ultra-light fiberglass cat running twin ducted fans powered by 35 amp speed controllers and a 3-cell, 8000 mAhr LiPo battery. I use a Y servo connector and thus a single stick for speed and turning (by varying the speed of the appropriate ducted fan). It not only screams but my arms get tired running it before the battery ever wears out. Note that I installed an ultra high power 120,000 mcd white forward running LED and a 11,000mcd Blue LED for the stern for night running. I live on a lake which makes operation and development very convenient!
Best, Professor Joe Valencic
Posted by questtek | Oct 08, 2006 @ 02:20 PM | 27,151 Views
The attached pictures show a 1/8th scale model of a "vehicle" I am developing that will serve as both a car and boat. Of special interest is the design of the wheel/propellor drive system. Dual brushless motors are used in a right angle housing and controlled via wireless "sonar" switches in the cockpit. Lithium batteries are used for power. The advantage of the drive system is that the right and left sides are identical and can be replaces as a single water proof unit. Hope this post stirs some creative thought.
Best, Professor Joe Valencic
Posted by questtek | Oct 08, 2006 @ 02:14 PM | 27,508 Views
The attached pictures show a 1/7th model of a concept I am developing, (the larger yellow canard) I am Senor Scientist R & D for Exomos submersibles www.exomos.com While we build submersibles and jet powered surface boats, my latest concept is a two person electric vehicle that is a combination boat, car and.........submersible. The "car" aspect will use the drive system in the pics...geared brushless motors, while the boat and car will use jet drives coupled to brushless motors. For the actual vehicle we will use the latest Lithium Chromium batteries that we use in the "special" class of our Exomos submersibles. A following post will show an alternate wheel/prop drive I am experimenting with. As you can see, RC models play an important role in demonstrating unique engineering concepts before they are launched into actual, limited production vehicles.
Best to all, Professor Joe Valencic
Posted by booger | Oct 08, 2006 @ 02:00 PM | 6,793 Views
Well I finished the repainting of my me-109
setup is as follows
ultrafly c/13/28 motor
ultrafly gearbox geared 2.39 to 1
apc 8 x8e
cc ph 25
apex 2100 15c 3s
3 hs 55 for aer
Posted by palmelectronics | Oct 08, 2006 @ 12:11 PM | 2,725 Views
Hi Everybody,

As I stated in my previous BLOG post, I will start to post those toys for fun sharing.

Here is my 72MHz 4-ch Receiver. I work it out with my friend who is expert in RF. I do the software programming to control and decode signal from Radio (the transmitter). It works excellent!!!

Please find attached photo and more information will come...

Notice : May be I can shortly give the Schematic in PDF format. Ha!
Posted by rhagen | Oct 08, 2006 @ 10:34 AM | 15,876 Views

Another trip to the hobby shop and I got a larger-sized Great Planes engine mount to replace the one that came with the plane. Fits nicely on the firewall and is plenty beefy enough for the engine.

Also finished off the aileron and flap installations and applied silicone where the wing and fuse meet to seal up the gaps.

Next up - cut out and install the cowling.
Posted by Esprit440 | Oct 08, 2006 @ 09:08 AM | 4,468 Views
I'd like to get some advice - I crashed the Stickler again today after it locked into a spiral dive. Any ideas to eliminate this trait or recover from the spiral dive would be appreciated.

I flew out one pack and landed smoothly, it was handling well although it did get into a slower spiral dive which I was able to recover from. At the time I was flying slowly and checking the stall behavior. The wings started rocking and it snapped down into the spiral.

The next time I got into the dive, I was flying pretty fast and doing some yank-and-bank maneuvers since I was feeling a little more confident with the plane. Not sure exactly what happened but suddenly it was spiraling down rapidly, power on. I cut the power and the spiraling slowed a little bit, but it went in from about 30 feet cracking the nose and tearing the tail boom assembly off.

Loops were also strange, as soon as I started to pull back the wings would rock and the nose started hunting from side to side and it then the plane fell out of the climb. I wonder if the tail is getting blanked out by turbulent air off the wings.

Posted by histarter | Oct 07, 2006 @ 11:18 PM | 9,028 Views
Histart Mechanics:

1960 to 1980 was the period of time dedicated to the bungee high start for flat land thermal soaring. Winches that were being introduced back then, had to cater to the designs that were prevalent, so the newcomer winch utilized a 12 volt (field wound) Motor coupled to a 6 volt battery. This softer winch was used to seduce the modeler away from the less reliable histart.

The standard Histart with 5/16” brown surgical tubing yielded about 9 lbs (when new) tension – that slowly died as the system was used. 100 ft of tubing for 500 feet of line was typical, with the stretch controlled by 3 times tubing length (fish scales were used to evaluate tension as quality of rubber, and not part of launching program, since distance stretched (stroke) was paramount).

Bear in mind that all machines were to launch off this standard whether sport flying or in competition, i.e. Pierce Arrow or Legionair. This created handicaps for pilots who were forced to use ingenuity to develop efficiency to master the light launch force of the time, with Lamon Payne leading the Dallas League of Silent Flight (DLSF) in employment of the captive hook, that he skillfully utilized for good launches. Lamon was an excellent thermal pilot that could really read air flying his 140” (heavy) Legionair, and had the confidence that as long as he was flying, he would be able to find lift and utilize it, and did not care that the Oly's were out-launching him (he was typically in the...Continue Reading
Posted by lmopar69 | Oct 07, 2006 @ 09:14 PM | 6,767 Views
Well, it flew, just needs a slight bit of tweeking. Its a bit nose heavy and could use some more power. So, I'll put a brushless outrunner in the nose and a slightly bigger battery on the tail. It will fly well, just gotta get it dialed in.


some airplane

Posted by carbondragon | Oct 07, 2006 @ 04:50 PM | 17,691 Views
hello the guy,
I wanted to just to present some ones of my realization for you…
My first model depron is the F-18.
As a suist I built two F-5. for me and another for Mick62 (it is a friend) With the colors of the Swiss patrol .
It is what decided to me to create mirage III.
the winter spent, I drew and built Nieuport 17 for flight indoor, motorized with an engine of cd rom.
In this moment I build a hawk that I also drew and of which I will give you soon news… ...Continue Reading
Posted by Jurgen Heilig | Oct 07, 2006 @ 02:48 PM | 35,907 Views
With over 100.000 visitors, the modell-hobby-spiel in Leipzig is one of the most popular model fairs in Germany. The facilities are excellent, as you can see from the pictures. It was here, where I started to get a taste for Indoor flying in 2000, and after 3 years as pilot only, I am organising the Slowflyer Show since 2003.

Here are some impressions from this years event.













...Continue Reading
Posted by mustang_jmz | Oct 07, 2006 @ 12:36 PM | 3,587 Views
If you are looking for that perfect model, try the new www.rc-model-data.com. This fast growing and free database aims to list every airplanes - sailplanes - helicopters - cars and boats produced in the World.

Available in 3 languages (English, French, and German), Rc Model Data also offers a common place for rc professionals and individuals to share their knowledge: professionals provide technical data sheets for their products, and RC addicts enrich them with pictures, videos and sample equipment....via their personal space (Hangar).

As videos are often better than long speech: