Posted by Crash Hancock | Aug 30, 2009 @ 06:19 PM | 3,221 Views
26cc Gas Engine Plane Ideas

In this installment, we cover a LOT of ground with topics ranging from contests to some new products coming onto the scene. I also answer a particular listener's question regarding plane suggestions for a new engine that he's expecting in soon. As always, please hit up AllThingsCrash for this week's Steals Of The Week!

Head on over to TheCrashCast to hear this week's installment and see the links for the items talked about!
Posted by silentsurfer | Aug 30, 2009 @ 06:02 PM | 11,032 Views
this will be my build log of the Mig3 in depron (or mixed-medium) which is being graciously taught online here by Hans.

Progress: (currently limited basically to pre~preparation) ...basically stalled, pending the (slowly) nearing completion of my Mirage 2000.
ive printed out the Plans, which seem accurately rendered,,
ive ordered and received 6mm depron, and acquired some (~6mm) FFF,
ive begun viewing the tutorial build videos, and attempt to monitor the lead thread postings, and peruse participants build logs.

..although i feel its very much to my benefit to have the foresight of the others endeavors at my disposal to aid my build, and (hopefully) prevent any obvious mistakes or trouble-some areas, i must find a way (and workspace) to actively work on Both projects. I am NOT a multi-tasker lol
I fully hope to at least cut out the templates, if not also the parts soon, as the deadline is quickly approaching.
Posted by SPasierb | Aug 30, 2009 @ 04:21 PM | 48,957 Views
Who cares if the ceiling is so low some of the treetops looked fuzzy? We came to fly and fly we did. It was "maiden" day for Bob's new tow plane. It's been flying for a few weeks, but today it really went to work with a glider on its six.

Pictured here is Bob Morrow's beautiful new Super Cub running an Eflite 160 motor, HV110 controller, 20x8 prop on 10S LiPo power. Tows at 60% throttle. Following behind is my trustly old SGS 1-26B. Aerotow is wonderful when both planes are scale. Dumb luck that the color schemes coordinate perfectly.

Look out Fairfield County!

More details on the Super Club -- see Bob's blog at: https://www.rcgroups.com/forums/member.php?u=54862



Posted by I R Irv | Aug 30, 2009 @ 03:20 PM | 7,336 Views
Vapor gearbox with twin 6mm motors .5530 CF prop ,Cessna brick ,8.5 inch span and 2MM dupron. Did'nt color this one as it was an experiment . Wish I had it flies great.Has good vertical pull out.
Posted by sixnone | Aug 30, 2009 @ 02:50 PM | 2,502 Views
Almost done! The Simplicious is ready for linkage. Looking good so far. Love following the build thread, https://www.rcgroups.com/forums/show....php?t=1077461 We are all having fun with it. Mine turned out to be almost 23 inches in wing span.

Next one I do will definitely have LED's for night flying. It has the hollow wing and with thin white foam they will show right through, illuminating the whole plane.

Its an easy plane to carry around as far as tossing it in the back seat, counter or shelf. Small enough for a tight yard, which is why I ended up building it. Cost is down too, compared to other similar planes.

Check it out and tell me what you think.
Posted by Dan.Cummins | Aug 30, 2009 @ 01:19 PM | 29,213 Views
UPDATE 03 JAN 2010: Cameron made his first solo flight today at Mt. Laguna. Conditions were light, and the lift band was out a ways, but he flew about 45 minutes, and greased his first landing!

My 10 year old son is showing some interest in slope flying, so we cut and built this wing. He doesn't have the attention span for long builds, so he was only a part time helper after the spackle and sanding phase.

MAIDEN REPORT: Wing flew well at Parker Mountain on Saturday. Wing performed EXCELLENT! Winds were light, but it still got it going about 78 mph on the backside, and flew on the front side til dark! Fast wing, great inverted performance, great recovery (Thanks Pismo).

CG = 175mm
AUW = 26 oz
Nose weight needed to balance = 2 oz

Build Specs:

Airfoil Alain Zutter - Modified
Wing Material = 1.3 EPP
1 carbon tube spar full span on the high point of the wing
Basswood drag spar
Balsa elevons, glass with 1.4 oz glass, covered with Ultracote
Double bias strapping tape parallel to TE
Double bia strapping tape on the LE
Ultracote covering
Twirler tape on LE covered by clear packing tape
Elevons attached with Blend Derm tape.
Standard Hitec servos (HS-311)
5 Cell RX pack (Enyloop AA)
RX= Electron 6
Standard Hitec switch
RC Cam DIY LMA
Deans mini FM plug flush mounted for charging batteries
2mm coroplast custom winglets attached with #8 binding post screw/post
Tips have 32nd ply gooped in place to help attach winglets.
Control Rods = 2mm carbon rod with 2-56 adapter on servo end, nylon Dubro clevis on elevon end
Throws = 5mm pitch ; 10mm roll
TX setup with 50% exponential to keep it flyable with lots of roll when you want it!
Posted by thomanie | Aug 30, 2009 @ 11:45 AM | 13,178 Views
I now have my HobbyCNC gantry router up and running with EMC2 off a laptop. Everything is more or less adjusted - backlash included, and its producing decent parts. So I'll take a few minutes and show the software toolchain needed to get your parts milled - for free!

The observant reader will note I have switched from TurboCNC to EMC2. EMC2 is just better IMHO. The main reason being the Axis GUI for EMC2. Having a visual representation of the work and its progress, is a very nice feature that TurboCNC is currently missing. A close second is having a modern operating system, namely Ubuntu 8.04, instead of FreeDOS with TurboCNC, with all the normal tools, including network, available.

Off to the toolchain, then. There's really only five steps to creating your own parts CNC milled parts once the machine is setup and adjusted.

Step 1 - Drawing your parts
Parts are drawn in CAD, and everyone seems to have their favourite CAD package. There's even a bunch of free ones available that are more than good enough - but it needs to be able to create DXFs. Google will help you find one if you're in need. Refering to the 1st attached image, draw the part (white line), and add the milling line to a separate layer in the drawing, including tabs to hold the part to the blank (green line). The mill line offset from the part should be half the router bit diameter.
Name: CADPart.jpg
Views: 965
Size: 15.1 KB
Description: Step 1 - Draw the parts in your favourite CAD

Step 2 - Generate CNC machine code for the parts
CNC machines normally execute what is known as G-code, a...Continue Reading
Posted by Maxfly54 | Aug 30, 2009 @ 10:49 AM | 4,540 Views
Now when I first flew the easystar it was a great joy, but it missed something and that something was power. Most of the products I am using I got from HobbyKing.com.

Specs:

motor: Turnigy 2835 (380S) 2700kv Brushless Inrunner
http://www.hobbycity.com/hobbycity/s...idproduct=4201

ESC: Turnigy Push 40amp Speed Controller
http://www.hobbycity.com/hobbycity/s...idproduct=2165

servos: Hextronik HXT900 9g / 1.6kg / .12sec Micro Servo
http://www.hobbycity.com/hobbycity/s...?idproduct=662

battery: ZIPPY Flightmax 2200mAh 3S1P 25C
http://www.hobbycity.com/hobbycity/s...idproduct=7636

---------------------------------------

These are all available from hobbyking

I used a APC 4.5x5.5E Prop

Then next I used a motormount that I found at home. There was a bit of mod to the body where I had to cut a V shapest cut into the back of the easystar for the wires from the motor to the esc inside, and had to lenthen the wires that came from the motor.
Posted by nick_cool | Aug 30, 2009 @ 08:26 AM | 13,098 Views
The Thermic 70 is a classic free flight model converted by me into an electric RC sailplane. It was build in balsa and has a wing span of 1750mm.

To select the power plant I had to make some decisions. What I know is that the Thermic 70 will weight no more than 600g and that it will need around 160W/kg to safely deal with the windy whether that lately we have here. Then the motor should take around 160W/Kg x 0.6Kg = 96W from the pack. So the Lipo options will lead us to:

Using a lipo 2S pack the current will be 96W / 7.4V = 13A
Using a lipo 3S pack the current will be 96W / 11.1V = 8.6A

There are two extreme options, the light one is to use a 47g motor and a 2S 1000~1200mA pack, taking 13A. It will add no more than 120g including the controller, but everything will be at the limit and the autonomy will be limited. If you enjoy a good climate without wind and good thermals, let’s go with this set-up.

The second option is to use a 57g motor and a 3S 700~1000mA pack. This set-up will add 180g (maximum) but will work efficiently, with very good autonomy, and with enough power to deal with the wind.

For the first option the power plant can be:
AXI 2208-26
Jeti Advance Plus 12A
Polyquest 2S 1200mA XQ

I choose the second options because I am used to fly powered models, I don’t want to risk the model, and it is a good compromise between autonomy, power and weight (150g total).

To select the motor, I need to pick up one in the 1100~1200 RPM/v Kv range
...Continue Reading
Posted by Maxfly54 | Aug 30, 2009 @ 06:44 AM | 4,557 Views
New to the hobby but having a blast. Here is my planes I have at the moment, it is a multiplex acromaster, multiplex easystar, a scale air cadets wilga 2000 and and a e-flite mini showtime.
Posted by g00bd0g | Aug 30, 2009 @ 02:24 AM | 7,630 Views
My 1st full immersion FPV flight on the slopes. Wind was wild and unruly, gusting to 25-30 mph. You can really see the plane bounce around when I get close to the slope, landing was "interesting". Glad I made it down in one piece.

Video was a bit overexposed, I'll get it dialed next time.

FPV Easy Glider Slope Soaring Flight (08/29/09) (14 min 37 sec)

Posted by Jack Crossfire | Aug 29, 2009 @ 11:33 PM | 16,941 Views
The answer is yes. There is an exposed shutter signal on the A480's main board U can solder very carefully. With that out of the way, our first high resolution photos from space in over a year came down.

Programmed 2 panoramas at 30m. 6deg/sec & 3deg/sec. Still programming & praying to get the right shot. It's tempting to get one of these http://www.sparkfun.com/commerce/pro...oducts_id=9334 UART cameras. These could squeeze a video downlink on the 2.4Ghz band with no risk of jamming GPS like 900Mhz.

On tomorrow's manifest, it's more photography of ... U Know. Where....Continue Reading
Posted by rcmorrow | Aug 29, 2009 @ 11:11 PM | 4,732 Views
Recent flying with the Super Cub shows that is should have 30 minutes of flying time use 80% of the battery capacity.

I timed flights of 15 minutes and then charged the batteries on a balancing Infinity 3 charger by Robbe. The batteries required 2440 mAh to fully charge.

My calculations showed that at 100% discharge the batteries should be flyable for 37minutes. 80% of this time would be 30 minutes.

For the 5400 mAh packs the total flying time at 100% use would be 33 minutes, with an estimated time of 26 minutes at 80% discharge.

This is based on the flying style that I have with this aircraft: relatively scale flying that does not include acrobatics with a throttle setting between 1/4 to 1/2 throttle.

Static testing of the current draw and watts produced using the Eflite 160 and a master Airscrew 20-8 will be completed tomorrow and I will share results within the next few days.
Posted by HugoCraft | Aug 29, 2009 @ 11:08 PM | 7,815 Views
John 3D (3 min 54 sec)

Posted by I R Irv | Aug 29, 2009 @ 11:04 PM | 6,600 Views
The purple one has a Ember brick ,7MM gearbox 5035 CF prop 9.5 inch wingspan made from 2mm dupron

The blue one has a Plantraco servo RX .AP03 brushless ,Falcon servo's ,4025 CF prop ,11 inch wingspan and 3mm dupron
Posted by Bajora | Aug 29, 2009 @ 10:19 PM | 11,953 Views
I have been a bit slow on getting this one ready but tomorrow should be the big day. And she is a beautiful ARF indeed! E-flites Platinum Series planes are very nice examples of what great engineering and quality materials can combine to create.

The twin Power 32's pull her HARD! The Robart pneumatic retracts add the final touch of class to this beauty.

I hope to have the full Ezonemag.com review wrapped up soon ...
Posted by RCAV8R13 | Aug 29, 2009 @ 09:57 PM | 11,461 Views
My next Sukhoi will be green. I added sponsor logos to this one and added some logos for the blue bird too.
I'll be getting them both outfitted with BL set ups soon.
Posted by Kenpilot | Aug 29, 2009 @ 09:27 PM | 4,089 Views
I was reviewing some video of my BP Cub landing gear tests, and found some good shots of my son holding the plane with the gear in retract mode. Well, not exactly...more like destructo mode. The gear had separated from the aircraft due to the lack of shock absorbers. After I modified the cross supports, the gear began to stay affixed to the fuselage....success!

It's great. I have so much video, and so little time to edit at this point.