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Posted by UBILDIT | Feb 22, 2007 @ 12:54 PM | 5,216 Views
Just a quick note. I was unaware that when sanding things that contain epoxy.. like a FFF laminated canopy, or when cutting Carbon Fiber Rods or spars, you should at least use one of those little paper masks over your nose and mouth. It's been reccommended to me that I perform these operations outside and with a mask or at least have a vaccuum hose nearby to catch the particles. As a result of my ignorance, I recently suffered through (what I thought was pneumonia) a small part of my lower left lung collapsed and became infected. It was no fun..
Further investigation revealed that the Carbon Fiber dust can be highly carcenogenic.. Crap!... So, I had to remove everything from the room I build in and totally vacuum, dust and mop everything top to bottom. Motor and prop tests tend to stir up whatever dust is in the room... so.. lots of work and no place to build.
However, I have been able to reorganize the build room into an assembly area, a soldering area and a sanding / finishing area. So it all turned out for the best.. But just a warning to anyone out there who was like me and did'nt know... Use a mask because you need your lungs...

Bo
Posted by Marco Vergara | Feb 22, 2007 @ 12:34 PM | 3,182 Views
cuando El Sexo Y Las Drogas No Te Sean Suficientes Prueba Las Carreras De Pilones.
Posted by Jack Crossfire | Feb 22, 2007 @ 02:25 AM | 5,120 Views
So after 1 month of defeat by microprocessor, finally got the mane processor to boot. The Gumstix came up easier than any other processor and the complete Linux environment gives it a zero learning curve, proving again if you can't fix it, flag it.

Had to probe every serial port on the Gumstix to find the one with the console. It was the one marked FF-1, for future victims. Unfortunately, boot time is 1 minute.

As nihilistic as it could be, don't expect any UNIX logins at 200ft to happen. Laptop battery life is just too short.
Posted by LittleJon | Feb 22, 2007 @ 01:20 AM | 3,308 Views
The repair of my MiniBOP is now complete! It's a great feeling to see a plane that at one point I had considered unrepairable is now ready for flight. I still have to check the CG, but apart from that it's ready to fly. Hopefully I'll have time tomorrow (Thurs) lunchtime.

I wanted to reduce the elevon throw without affecting roll speed. I thought I could do this by adding an end point adjustment to channel 1. Unfortunately, on an Optic 6 at least, end points seem to only affect the servo throw pre-mix, so only one servo was affected. Instead I've had to just move linkages to a lower hole on the elevon control horns. In case you haven't read my earlier posts, the reason for my needing to reduce the throw is that on my second flight a hard up caused a stall resulting in a nasty crash.

Another minor change is I've swapped the existing (and damaged) 4.75 x 4.75 prop for a 5.25 x 4.75. A static test with a slightly discharged battery suggests both the TP 2100 3S1P Pro-Lite and the 35A Phoenix should cope.

The attached photos show the plane after the rebuild.
Posted by dbgantt | Feb 21, 2007 @ 10:50 PM | 5,104 Views
Here are a couple of pictures of a Thunder Tiger Giles G202 ARF that I am setting up as electric. I went into the hobby shop for some glue and walked out with an ARF. They made me an offer I couldn't refuse since they were closing out all of their RC inventory.

The box said wingspan of 59.5" which is why I bought it. I was looking for a replacement for my Flame sport plane which met an untimely demise afer a radio failure. Turns out the plane is .40 size, not .60 size and the wingspan is really 50.5". The box info had a typo. Anyhow, this is my first ARF and it was really complete. I always liked the Giles as well.

Turns out building this as electric adds quite a bit or work to the ARF! I plan on using two Hitec HS 80 wing servos instead of the single called for in the plan. Power will be a Mega 22/45/3e geared 1.68:1 with a MEC superbox. Battery will be 8 A123 cells. Prop is a MAS electric 13x8.6. ECalc estimates it at 175 watts/lb so it should be good to go to hover. Pictures are attached....Continue Reading
Posted by fr4nk1yn | Feb 21, 2007 @ 10:31 PM | 4,309 Views
My videos are here:

I just love seeing all the things I never new were there.
There seems to be more cemeteries in this area than I ever suspected 0:
Posted by J9FORGE | Feb 21, 2007 @ 06:51 PM | 2,822 Views
Anybody Interested In A Micro Stand-off Scale Grumman Widgeon?

I'm Currently Working At Making Plugs To Vac-form Them --out Of 1 Or 2mm Foam. It Has A 20" Winspan- No Other Details At This Point- Will Get Some Pics Of The Pluggs Soon .......
Posted by spaulj | Feb 21, 2007 @ 05:55 PM | 4,556 Views
Pictures from a recent SoCal trip.
Posted by AJMangetti | Feb 21, 2007 @ 03:42 PM | 2,145 Views
Like video of radiocarbon where we can see the secrets of thermals, I have had an extremelly experience of this type of flying a few days ago.
I was in a very good field in an farm with my "URUBU" (black bird sailplane) when, suddenly a very good thermal appereared like a comet. Around my sailplane was severals vultures following me (URUBU). The origin of that thermal was from a CB clouds and I was very pleasure of that but.......whwn I could see, my sailplane was in instrument flying and almost I had never see it again. Because a very lucky I could recover my friend (Urubu).
The strong of a thermal is very exciting and at same time give us afraid.
Very very good experience and thanks of radiocarbon about your videos!
Posted by Blackjack52 | Feb 21, 2007 @ 03:23 PM | 3,469 Views
Put some masking tape on the hull area that you will be drilling the holes into. Make sure you apply the tape really well. This will prevent chipping of the paint and clear coat.
Since I don't have the stock trim tabs anymore, I don't remember if they sit flush with the stock turn fins. If they do, measure how far up from the bottom of the hull that the stock one sits, and then use a pencil to mark that on the port (left) side. Then place the new turn fin bracket on the other side, align it with the line you drew, and mark the center of the holes onto the back of the boat. Use a hand drill or dremel to drill the new holes. Don't apply too much force, because of the wood support on the inside of the hull. Just take it easy.
Apply a small bead of silicon gasket around the holes in the boat, let it dry for a few minutes, then replace the hardware.

Always double check the bolts before every ride, especially the ones going through the transom. The wood support on the inside will expand/contract with moisture/humidity. After a few runs, they will stay tight.
Posted by Jurgen Heilig | Feb 21, 2007 @ 02:01 PM | 29,044 Views
Building strange looking model aircraft while at university in Munich - 25 years ago! (And I leave you hanging for the Summer of 1982 pictures ).
Posted by TWrecks | Feb 21, 2007 @ 01:42 PM | 3,470 Views
I have started up a scratch build foam workshop. It started with desire to convert a Multiplex TwinstarII into a seaplane. Now I'm thinking a foam/glass wing replacement for the Manta Bought Profili2 Pro to help with the airfoil selection and wing design. Good bargain at USD$54 for personal use. Looks like it will do almost anything CompuFoil3D will, plus airfoil simulations.

For starters I built FoamFlyer's So.X twin boom pusher at 1:1.8 scale. It flew OK, but the large nose and short tail coupling made it hard to point into the wind, and showed lateral instability. It got blown back into a tree on it's 3rd flight during 10-15mph wind gusts, and was wrecked during removal. For reasons not known, it would not loop, and could barely roll, despite have 4oz thrust on a 8oz plane and (I thought) pretty good size ailerons (yes I used 2) and elevator and a pitch speed of about 25mph. Climb rate was fine. Still it was easy build and proved to myself I could cut an airfoil and make it fly.

Next up... how about a Foam Ugly Stick? Hmmm.. the F'Ugly Stick. Has this been done? This will be a design from scratch loosely proportioned from the Ugly Stick. I think the front mounted motor will make tail/nose balance and moments work out better. If I get it to fly well I will post plans.

Tim
Posted by TWrecks | Feb 21, 2007 @ 01:13 PM | 3,465 Views
The Manta is now in intensive care due to pilot error ... Don't fly a low pass up into loop while heading towards the setting sun. Augered in at a 30deg angle, about 3 inches into the soccer field. Wing partly snapped, but the main spar seems intact. Landing gear torn off but salveagable. The rudder popped out of the tail, which was glued in with rubberized CA. The battery and servo tray which were glued in with Goop did not move at all... go Goop! In short the fuselage is definitely repairable, the wing a maybe. The Medusa motor shaft was bent, but $22 later is as good as new. Battery had to be put down though

I need something hot to fly!

Tim
Posted by tor_kamata | Feb 21, 2007 @ 12:24 PM | 4,443 Views
My mother-in-law, knowing I love flying toys got me and all my buddies a ride in this for my birthday. Here is a video link. I take the camera up with me in the end. The video quality isn't great because of a couple conversions from my old video camera to dvd to avi. But it was fun!!

http://vids.myspace.com/index.cfm?fu...oid=1987989473
Posted by ratb | Feb 21, 2007 @ 10:09 AM | 3,056 Views
Here's my plan for developing myself as an RC pilot. Actually, it's sort of like a wish list...

I'm currently flying a Begin Air with a Wing Dragon wing on it, as a 3-channel trainer. At some point fairly soon, I'll put the Begin Air's wing on, and start flying that plane with ailerons.

My next purchase after that will be a computer radio, probably a DX6. I'll upgrade the RX in the Begin Air.

Then, it's a Superfly.
Posted by Jack Crossfire | Feb 21, 2007 @ 04:12 AM | 5,472 Views
Meet the Gumstix, the most expensive 2 square inches in the universe. The point of the Gumstix is to make a computer the size of a stick of gum. To achieve this gimmick, there are no useful headers on the board. You need to shell out more money on a breakout board.

As rediculous as it is, it's the lightest and cheapest computer available, pound for clockcycle. Despite being an embedded application, the Gumstix has no A/D converters and this particular breakout board has no GPIOs. It's only communication method is straight from PC lore: the UART. 4 UARTs 2 B exact.

Now for the first time, we have high resolution images of the Gumstix.
Posted by DismayingObservation | Feb 20, 2007 @ 11:42 PM | 4,402 Views
While I'm on the subject of blogging, I thought that I should share something that's been bothering me for some time now.

Wikipedia has about 43,000 registered editors in good standing. Fewer than 1000 are administrators. Obviously, I'd quit at least once before. Just go back to my first entry here.

I am - or at least was - one of those thousand.

I spent four years writing and editing subjects ranging from full-scale railroading to classic cars and not a mere few on radio control.

Waste of time? Perhaps.

Wikipedia is a grand experiment and a noble vision gone horribly awry. There are more vandals than good users at any given time and I frequently found myself faced with the Sisyphean task of cleaning up after these yahoos.

I've found evidence on the internet of coordinated efforts on the parts of disgruntled individuals to discredit administrators...and I fell victim. These jerks sign up, do some reasonably good editing and then sneak in bizarre edits designed to catch the attention of an admin. When the admin cleans up the mess, the attacks begin. Worse, the "community" seems to be letting it happen.

Jimbo Wales, the site's founder, is a decent person. I only wish that he would step in to help clean up this cyber-playpen of his, now overrun by high schoolers creating nonsense pages and spammers from all over the globe, not to mention these destructive users of the type I just mentioned.

The upshot? I still edit at a neat little independent wiki dedicated to electric flight. It's called www.eflightwiki.com and virtually everything that I wrote on Wikipedia may be found there. I edit under this same user name.

Lots of good info there; I hope you'll stop by.

As far as Wikipedia is concerned, cold turkey never tasted so good.
Posted by ozace | Feb 20, 2007 @ 11:34 PM | 14,347 Views
I have been looking for a vinyl cutter for quite a while now and finally i found one. Roland Stika 15sx. The software is pretty basic so i can work it ok. Now i just need to find some artistic ability so i can make pretty canopy stickers.