Shop our Airplanes Products Drone Products Sales
Posted by Jack Crossfire | Nov 02, 2006 @ 12:44 AM | 5,153 Views
So with the rain officially underway, there will be few flights until June 2007 and you'll have to download something else. A note about Calif* weather forecasts:

Tuesday's forecast said 48 hours of rain beginning on Thursday. Wednesday's forecast said 72 hours of rain beginning Wednesday. How much you want to bet Thursday's forecast says 240 hours of rain? NOAA forecasts are based on a late 80's pattern of drought and don't reflect modern reality. If it says rain, multiply by 5 and move it up a day.

The last flight of 2006:
27min, no wind, temperatures in the 40's
250mA charge

Had good results flying 30 ft straight ahead, turning left to nose-in, and flying back. Turning right to nose-in was a different story, but managed to recover from every loss of control.

With freshly tracked blades and no wind, virtually no input was required to hover, definitely useful for nose-in. Seems to require lots of left cyclic when turning to nose-in. Sideways hover may be harder than nose-in because of the lack of sideways orientation information.

With throttle getting softer, entered a very stable hover 3" above the ground until speed controller shutdown and another smooooth Launchpad McQuack landing.

The Corona's tail whips around so fast, it makes the Comanche look like a '57 Buick. Could have used this in Iraq.

Abraham Lincoln wrote:
> Could have used something in Iraq.


Posted by sudovod | Nov 01, 2006 @ 12:21 PM | 5,946 Views
It is 46mm. and gives 125g. thrust at 10A, motor 4900Kv (MT- bed motors ).
Now looking for motor with approx.6000Kv and 20mm. diametre
Posted by Ceeray | Nov 01, 2006 @ 10:44 AM | 5,545 Views
Well, the painting is pretty much done now. Also panel lines are drawn and I also used metal color to make "scratches" on the surface. It does not show well in the pics, but its there..

Now I only have to add nationality markings and other similar stuff. But its 99% ready.
Posted by rhagen | Nov 01, 2006 @ 07:27 AM | 15,312 Views
Two weeks ago I won this EFlite Ultimate FX at the PGRC club meeting raffle.

It is real easy to assemble, and is a nice looking plane. There was one major gotcha that I discovered, and I should have looked for info here on RCGroups beforehand because others have run into it too. The saddle on the bottom of the fuse needs to be trimmed and sanded to get a good fit for the bottom wing. If you don't discover this before you get to that point in the instructions it is a real hassle.

I installed the EFlite Park400 920kv outrunner, EFlite 20A ESC, and ThunderPower 1320mAh 3S lipo, with an APC 10x4.7 slow-flyer prop. Servos are Hitec HS55's and I'm using a GWS 4-channel receiver.

Another issue with this power setup, is that the plane comes out nose-heavy. I had to put in a blucore battery tray on the bottom wing up inside the fuse to get it to balance. The recommended position was up against the firewall. I guess the outrunner is heavier and a little farther forward than the inrunner geared setup.

I've flown it a couple times now, and in some ways I'm happy, in some not. It flies nicely when I'm just cruising around, but aerobatics aren't very good. I probably have to fine-tune the balance, but at this point it pulls badly toward the gear in knife-edge and inverted flight. It also doesn't want to hold a level line very well without constant fiddling with the elevator. I may be just a little tail heavy - will experiment with battery placement some more. I know this plane is capable of performing better than I can fly it, just need to get it set up correctly!
Posted by fly_boy99 | Nov 01, 2006 @ 02:24 AM | 4,750 Views
I'm a bit dissapointed that I found this damage to the nose as this is the weakest spot on the plane.

Posted by Jack Crossfire | Oct 31, 2006 @ 11:14 PM | 6,693 Views
So the latest flight times with no lighting:

Sat 10/28:
30min high winds
28min * 2

Sun 10/29
28min * 3

Mon 10/30:
27min 20mph gust

Flight times going down despite increasing winds. May be a loss of blade tracking or cold weather reducing the battery's effectiveness. Broke down and ordered a 4000mAh 11.1V 15C 275g Li-Po from ($94). Seems too good 2 B true. Our current 3300mAh 11.1V 20C 260g Li-Po was $120.

The weather is deteriorating as we enter the 7 month rain period in Rain Ramon. 20mph gusts during sideways hovering and category 5 during nose-in operations. Usually hits category 3 by the time the nose is 135` around.

Completely lost control while pointing nose-out and downwind when a 20mph gust happened. The tail started whipping around like a flag,
trying to point upwind and nose-in. Fighting the tail and pulling back caused it to shoot up like inflation. You see, without a heading-hold gyro, the nose naturally points into the wind.

Still shooting up with the throttle at auto-rotation speed and maximum aft cyclic. You see, extremely slow rotating blades provide no
cyclic authority. After some heroic flying, got enough category 3 wind to get it nose-out and pointing into the wind again. Collective pitch
would probably handle better in Rain Ramon due to the possibility of higher rotor speed.

In high wind, the $40 GWS gyro on maximum gain tends to snap the tail back and forth like a receiver glitch. Pretty exciting, in addition to the GWS receiver glitches. Still glitching despite wide antenna spacing and soldered crystal.
Posted by Crasher no-mo | Oct 31, 2006 @ 10:19 PM | 3,274 Views
Well my aerial photo camera has finally expired. I have a new one that is a lot heavier, but will make better photos. It is an HP E327, 5mp. (photo), My main concern was whether the Slow stick could lift the heavier load. I got a new Rimfire brushless in place of the old brushed 400 motor that served me well for the past summer. I took the slow stick out for a test flight today, Oct. 31 and flew with a dummy load to match the weight of the new camera. The Rimfire is a rocket with the heavier load which is ten times heavier than the Aiptek was. The brushless motor doesn't care! It will almost go vertical with the full load.
I didn't get any pictures today because the wind came up. I have learned the stick is no friend of the wind.
Being new to brushless and Lipo's I am well pleased with the new power system.
Posted by IPal | Oct 31, 2006 @ 05:48 PM | 23,386 Views
Hi all,
Here's my spin on the Picco. Carved from blue Floormate 200 foam. Weight 11 gms - only other mods are ballraces and carbon shaft. Flies a treat. Paint is Tamiya acrylic with computer generated decals using SuperCal. The sharp eyed may spot that the stabiliser is on the wrong side - but so is the tail rotor! Haven't yet figured out how to get the winch to work.

Fully illustrated build sequence now on the PiccoZ Toolbox
Posted by FlyinTiger | Oct 31, 2006 @ 01:31 PM | 2,816 Views
I'll always try to be honest if I have something to post, so please do the same if you write a comment.

Posted by mikeythev | Oct 31, 2006 @ 08:57 AM | 4,841 Views
Here are a few pictures of my PCat. I designed the plane in March and had a flying model in April. It's a laser cut kit, which I did all of the work for. I have access to a laser at my job, and I abuse my privileges with it.

The plane's parts interlock, easing the alignment process. It comes in around 18oz, and is powered by a Little Nippy 1812/100. I have used two separate packs, a 3 cell 1500, and a 2 cell 1250. The weight savings on the 2 cell pretty much compensate the performance equally. It has a castle creations Thunderbird 18 for power which works flawlessly. I love the beep it emits when your receiver is left on.

It was covered with SoLite, which is a cinch to use. 3/32 inch balsa holds most of the structure, and the formers are 1/8th balsa ply.

Check out the video on my website for the club I run.

if you have any questions about it, please Email Me
Posted by nauga | Oct 31, 2006 @ 08:22 AM | 8,971 Views
Sign on a program manager's office wall:
"Never trust an engineer - under pressure they tend to blurt out the truth."
Posted by rotorheid | Oct 31, 2006 @ 05:02 AM | 4,684 Views

Today, 31st Oct 12:30 local I had my best flights yet, wind was zero, a little thermal activity, just starting to bubble. (Eagles were struggling to get away)

I had four very pleasant flights of 5 mins each on two battery packs 480mah 3 cell lipo's. Prop GWS ep 8x4 ,motor is Korean 7A brushless T590115 from Staufanbiel Germany but it's sold in France by T2M! Talk about "Spiel sonder grenze" or Fun without frontiers!

Moved rotors as close together as possible, 1.25" between hub faces, pendulum stability best so far, good control response, rudder at 1" each side max, elevator 1" up and down. Hang angle is mast slightly aft of vertical, guess 2 degrees, no more than 5 degrees. Absolutely no bad handling! maybe bad piloting? Remembered I use a GWs GW/R4p reciever so kept down below 300 feet, all up weight is a whopping 251 grammes or 8.8 ounces, that sounds better.

Cheers mates

Al (T)


Posted by Supersix | Oct 31, 2006 @ 04:26 AM | 3,201 Views
Posted by s14slide | Oct 30, 2006 @ 09:03 PM | 2,895 Views
Well I flew my Fling yesterday in some serious winds and had her up for about five minutes at Mt. Trashmore, in VA. Wasn't too bad considering I used about a 2/3 quarter roll taped to the bottom of the fuselage. Well that flight ended prematurely when a head on 30mph gust flipped her on her back without enough room to recover. Oh well. Wasn't too bad. Did a little CA repair on two cracks on the fuse, replaced a fried RX. Brand new Hitec 05S, toasted. Thought my servos were toast too, cause they were just spinning in circles, but I R2 the Rx and everything was G2G. She's a surprisingly tough little bird.
Well today was a little different story. I did figure out what others were saying about it not having enough rudder authority. Maybe it's me being used to my 3D foamy that I used as a trainer? Whatever, I want more rudder! I guess I'll try the tape thing like everyone else. I'm thinkin she flew pretty well today, but I'm wondering how much of a difference it will make by removing the 5th cell of a 2/3AAA NMH pack. Will the weight loss make a huge difference? If you know for a fact, holler at me. I'll have to wait till I get home to Japan to make the changes if it's worth the trouble. Anyways, I completely love this little plane and with it's smal size and included hi-start, I think she'll be perfect at home in Japan. Well if anyone has any advice for me with this little bird, LMK ASAP. BTW, last question for anyone out there, is it worth the trouble and weight penalty to go ahead and make a better mount system than the rubber bands? i.e. pin the front and nylon screw in teh back. LMK.
Posted by Esprit440 | Oct 30, 2006 @ 07:14 PM | 4,487 Views
Well the weather warmed up and the wind died down to the point where I could get the tail painted tonight. It's done - although I will have to go back into the Rhino model and make one last set of adjustments.

In my zeal to shift components around in order to allow a little more clearance for the battery, I actually went too far. The battery is now about 20mm farther forward than I'd like at the new CG - the curve of the forward fuselage limits where it can be positioned since the velcro won't grip well there. Almost finalized though, and I think I will switch back to a 3mm tail boom because the 2mm piece is just too flexible.

Flying weight is 4.92oz - just a touch lighter than the 5oz of the previous version.

I tried some black Solite panels on the underside for better visibility; this was my first time using covering in about 15 years! Very nice stuff and easy to work with.

Hopefully the weather will cooperate for the maiden this weekend, some wind actually helps land this thing at a decent speed. Don't need the 40mph gusts we've had recently though!