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Posted by Slider2732 | Jul 20, 2016 @ 03:28 PM | 1,371 Views
Clean forgot to post this build from a couple of weeks ago...
R/T for roasting tin.

Having never flown an EDF anything, a natural thought would have been to build a jet...as any sensible person would do.
So, a Nutball type shape was decided on
I grabbed the kitchen roasting tin and set about making an elongated Nutball....a bit like go faster stripes, the body of it would be stretched. It still doesn't make sense does it.

On to the shape went a brushed GWS 40mm EDF, salvaged from a crashed Kid Galaxy flying wing from circa 2009, that I bought at a seconds store.
10-15A brushed ESC, ex Harbor Freight Mustang I believe
AR6310 RX
2x 3.7g servo's
260mA Venom 2S lipo
12.6" wingspan, 17" length
RET controls
AUW 3.2oz

It was too heavy on the first flight attempts. So, off came the landing skids underneath, the other ESC was replaced by this Harbor Freight one (lightened by removing plastics and changing the wire gauge) and also the thrust tube was completely removed.
And now....now she flew !

Jetball R/T - what the heck ? (3 min 16 sec)

Posted by Slider2732 | Jul 01, 2016 @ 03:31 PM | 2,163 Views
An odd flight experience of the AR6400 Hawker Hotspur.
This model is often passed up, in favour of the Hurricane, but flies very sweetly even with just rudder and elevator, as fitted to this one.
My original Blog post, with pics and build details is here: http://www.rcgroups.com/forums/showthread.php?t=2611160

As may have been noted, the sun sets on the road side of the small field that I fly at. However, yesterday evening saw some lightning at around 7.30pm and then reddened 'sunset' clouds in the North !
I mention that, because of the odd flights of both the Hotspur and a Nutball type aircraft up there at about 8.15pm. At that time, the temperature was about 84F and the wind was around 5mph. What may be important, is that the field grass hasn't been cut in many months, except up at the North end where there is a baseball diamond.
What am I getting at ?
Both would suddenly rise by several airframes worth of height, or occasionally drop by the same amount. Micro pockets of what I think were thermals (?). I had thought that thermals wouldn't be strong with any wind, so that is the point of my post...anyone see this sort of thing regularly ?

In the vid clip below, i'm using the elevator quite a bit to give a balanced lazy looking flight of the Hotspur. But notable moments include near the start, where she comes back far higher from the sunset direction than when going toward it, with no throttle increase or up elevator used. Also, dips and rises which should be accompanied by large changes in throttle.
A fun experience, but one that I don't yet understand !

Hawker Hotspur - Northerly sunset + bubble lift (1 min 32 sec)



Attached below, are a pic of the Hotspur and the weather conditions as reported by Wunderground for yesterday.
Posted by Slider2732 | May 30, 2016 @ 07:48 AM | 1,755 Views
8mph may not seem to be anything to worry about for a lot of aircraft, but, what if it weighs only 7 grams ?
Such was the case yesterday with the converted Floureon FX-10 pico quadcopter build shown in the last Blog post. It's now somewhat of a little Nutball. The span is 6", it's made from a polystyrene plate and uses differential thrust from 2x4mm motors that notoriously bind !

Because of a storm rolling in, I decided to go to the local field earlier than the usual 8pm for this time of the year.
My other Nutball type has flown well in 17mph wind, so how would this do ? the screencap below shows that winds were somewhere near to 10mph at 7pm, falling toward 5mph by 8pm. The Microball took to the air at about 7.15pm.
It retains some quad features, notably a sort of flip mode, where pressing down on the right stick allows it to roll in a spiral to quickly reduce height...very useful when taken by wind gusts. Range is a good solid 100ft or so, as tested yesterday, sometimes not by choice.

Check it out...

Microball in 8mph wind (2 min 9 sec)


No sound, due to being recorded with the Hubsan 2mp camera.
Posted by Slider2732 | May 23, 2016 @ 12:35 PM | 1,791 Views
I've seen conversions discussed of heli's to planes, most notably in the 'Cheap helis to planes' thread in the Indoor and Micro section.
But a quadcopter ?
A pico quad ?

In December of last year I ordered a Fluoreon FX-10 and it arrived with a binding motor. The first flight saw it zoom off to the right into a livingroom wall...of course the soft cushiony couch was to the left.
After attempts with graphite, thin oil and more the quad only ever gave about 2 mins of flight and likely struggled all the while with that motor. I then swapped it out with a salvaged spare and, the new motor had much more power than the others...didn't fly right at all.

What to do ?

How about converting to a diff thrust plane, steering using 2 of the motors.
I knew that the gyro would need to be defeated, yet had only ever seen heli's discussed and mostly WL Toys receiver based. Hmm. Well, it was doing nothing sat around unflyable.
A search on the chips was embarked upon, The first was found to be the radio chip, but the 2nd was indeed the gyro, an N540. However, no datasheet was found.
OK, well, it has to connect to the main processor on the other side of the board, so some circuit tracing was embarked on and 1 line did indeed go through the board to the other side. That trace was also, semi conveniently near the bottom of the board, but inconveniently right above the lipo connecting points !
Firstly, would it bind with 2 motors missing ? - yes.
Careful tape placement then saw...Continue Reading
Posted by Slider2732 | Apr 18, 2016 @ 11:58 AM | 2,373 Views
A little 9.5"/24cm wingspan airframe that was sent to me by good friend Aeronaught, is now back in the air after a number of years.
I'd thought it was a single winged Micro Ultimate model, until realising that the top wing hadn't been lost in a box somewhere, it was always a single winged aircraft !
Around 2009, this flew with ITC F-22 guts and then was stored, along with quite a few other models.
An aim recently, had been to fix up otherwise discarded and abandoned circuit boards. This one features an Estes RX, that only has pulse or full throttle and a bang bang actuator rudder. Quite the challenge to get anything to go well with such limited control....good

A 130mAh sits in the front, motor is a 7mm Hubsan replacement , with Hubsan prop and the actuator is a self wound 450 turns unit of 40AWG wire, with a piece of HDD magnet.
It really does fly very nicely, perhaps more a testament to Aeronaughts build quality than my rebuilding and flying abilities.

Early one recent Sunday morning, I took it out for a spin. Here's the flight video and below some pics:

Video moved to Replies section, to speed up page loading
Posted by Slider2732 | Apr 02, 2016 @ 04:28 PM | 2,449 Views
A self designed system, using own written code that now finds itself on a popular Nutball type aircraft.
In the video below, the first flight section tests were in 4-5mph wind.
The second flight section was in 14mph winds, as reported by wunderground.com for 30 March 2016.

The code itself is highly experimental and therefore not available for download, for safety reasons. There are some well established other programs such as Cleanflight and ArduPilot that are much further along - i just wanted to code something from scratch as a challenge.
As such, there are 1024 steps resolution on 3 channels, plus a 4th switch type channel, for lights or guns (as on the previous Blog post of the Mitsubishi Zero scratchbuild).

Nutball spec:
12" Dollar Tree foamboard (paper removed)
10g brushless, 5x3 prop from a Sky II toygrade of years ago
10A speed controller
2x 3.7g servos
3.3V Arduino Pro Mini, with battery to the RAW input
nRF24L01 2.4GHz module - also one in the transmitter - short range, to be upgraded
7.4V 260mAh 2S Venom lipo
Throttle, Rudder, Elevator + switch channel
Flight time around 8 minutes
AUW 2.9oz

Also maybe of note, the servo links are made from pieces from a metal cooking tray, with the legs from capacitors and heatshrink tube to connect.
The dihedral is less than some and the body flat part wider than some...most of which because I used the playfield lines on my AirHockey table to line things up straight lol


Arduino/nRF24L01 - Nutball ! (4 min 27 sec)

Posted by Slider2732 | Mar 07, 2016 @ 10:21 AM | 2,229 Views
A scratchbuilt Arduino controlled Mitsubishi Zero.
This will be a longer entry than usual, to explain what on earth i've done

This project had its beginnings around Christmas, when a bargain $9.95 (free P+P) clearance purchase arrived of an Aircore Zero airframe. It proved difficult to fly, with my own electronics in it, or the factory spec Aircore ones. Very twitchy and, not wishing to ruin it through lack of expo abilities on my DX5e, decided to make a beater version. It may have been cheap, but certainly doesn't look it.
Then - why not use the full expectations of crashing badly, to fly it with self written code using Arduino's ? - perhaps I could bring in expo code, what could go wrong ? lol

Specs:
Wingspan - 22" KFm2
ZMR 1804 motor
10A speed control
5.5x4.5 propeller
2x 3.7g micro servo''s
Self made servo links, using fiberglass rods from a Dollar Tree kite
Arduino Nano's, 1 each in the aircraft and the TX
nRF24L01, 1 each in the aircraft and TX
Battery - 2S 260mAh lipo
Weight - 4.9oz (compared to 4.6oz of the Aircore)
Previously 4.3oz without elevator and nose/wing strengthenings.

The coding in fact went well, nuggets of info about the Arduino libraries most certainly helping to move the project along. Little things, like the servo library also applying to an ESC, or how the map function works. All of it most certainly furthering confidence and abilities with C++ too...and making more profits for coffee manufacturers into the early hours !
Flyoff code was an...Continue Reading
Posted by Slider2732 | Feb 24, 2016 @ 07:50 AM | 2,776 Views
I'd never heard of this Hawker prototype, so embarked on a bit of research and then a build. With having been kindly given an AR6400 receiver, this could form a great first build with it.
The Hotspur had a few interesting features. The gunners dome, which Boulton-Paul put on their famous Defiant, Henley fuselage and, Hurricane wings.
https://en.wikipedia.org/wiki/Hawker_Hotspur

Specs:
Wingspan - 17"
Dollar Tree foam, paper removed, shape sanded
Receiver - AR6400
7mm coreless and gearbox
Spektrum skinny prop, original to the AR6400 after many others were tried
Battery - 1S 150mAh
Rudder, elevator, throttle
AUW - 34g

The build went well, though the intended ailerons haven't been fitted yet. 2 pieces of foam form an otherwise profile fuselage. The wings have quite a thin KFm2 step, which also adds rigidity, those are sanded toward the outer edges. Washout to the wingtips and wing rears, similar to flying wing sandings.
Initial flight trials showed lackluster performance, but, surely the original prop would be too long and skinny ? That prop was eventually refitted to the stock gearbox and everything was transformed...the difference was unbelievable. Before, it had struggled to remain airborne, needing gentle stick movements, but now it flew off without issue and very strongly. Good speed, sharp turns, will float along if wished.
The video shows that first real flight, a total joy in comparison.
Am very pleased with this Hotspur, which is likely to receive roundels, as well as the ailerons. Also, from a history of such things, am quite surprised that the Star Wars gunner dome has kept its guns throughout all flight trials !

Hawker Hotspur real maiden (1 min 54 sec)

No audio, due to being a Hubsan 2MP quad camera on a hat.


Pics -
Posted by Slider2732 | Feb 20, 2016 @ 07:56 PM | 2,984 Views
Another catch-up post....
This flying wing was intended as a quick, 30 minute build, to test an old 40mm EDF unit. However, during the backyard throws with it onboard, it was noted that the airframe was really quite good. The brushed EDF, however, was not up to the task.
So, the EDF came off and a regular pusher brushless setup went on.
On seeing the new Boeing 737 MAX wingtips, I thought about doing something similar with a flying wing. That's why this one looks a bit like a squashed Star Wars TIE-fighter, at least to my eyes.

Specs:
Dollar Tree foam with black paper on (I know, i didn't know they do black either)
Wingspan - 26"
Receiver - AR6110E
2 x 3.7g servo
20A ESC
ZMR 1804-2400KV motor, after trials with other types for a 'best fit'
Firebird Phantom prop
2S 450mA
AUW - 5.4oz

Video moved to Replies section below, to speed up page loading.
Posted by Slider2732 | Feb 17, 2016 @ 11:39 AM | 2,476 Views
Purchased at Dollar Tree in around 2009, this foam glider was forgotten about in our backyard shed. It had suffered a crumpled tail and other problems over the years.
But then, an idea. Could it be salvaged, fitted out with some strong toygrade gear and actually be flown ?

Shed Jet specs:
Wingspan - 22"
AIr Hogs Mini Storm Launcher motors and receiver
2x 150mAh 1S lipo in parallel
AUW - 2.5oz

I replaced the very odd and short squat tail vertical, also replaced the crumpled tail horizontal. After some eventful and quite comically rubbish flights with the original wings and some weak EDF type motors, things got changed out. On went new wings, the others would have needed a lot of work on especially the tips and rears. The new wings have KFm2 type top sections and an underwing support made of a piece of metal cooking rack ! Underneath were fitted the 2x MSL motors and props.
Now, for a fly down at the field.
It was too windy, I should have known better, but simply wanted to know if the weight could be flown by the gear. Nearly everything ever made with MSL gear 'back in the day' had a top weight of exactly 2oz and this, well 2.5oz is quite the difference.
Did it fly ? yes indeed, with a look and grace far removed from how it looks !
It will be going back out there in calm conditions and deserves a bit of a paint job. Maybe outer winglets too, to bring it up to date.

Video moved to Replies section underneath, to speed up page loading.
Posted by Slider2732 | Feb 14, 2016 @ 08:45 AM | 2,599 Views
Remember these ? little infrared indoor flyers from 2008.
The story of this one starts in September 2009, when it was bought at a local returns store for $1, missing its transmitter. More info in that Blog post: http://www.rcgroups.com/forums/showthread.php?t=1114862
It was fitted out with a few different sets of gear, such as ITC twin motors and even reversed around to fly in the other direction. Those were iterations 1, 2, and 3.
I found the airframe recently and, even though it was now in an awful shape, embarked on an idea - to fly the thing outside in full sun. Also, to see if a non gearboxed small prop will work for walking speed flight and to see if an onboard 'brick' servo output can work with an actuator coil.

Cyclonix4 has the following spec:
Receiver - Minium 3
7mm coreless motor
Hubsan H107C quadcopter prop
Homemade 450 turn actuator coil, with a piece of HDD magnet.
130mAh Fullriver lipo (older than the hills too)
Throttle and rudder
AUW 18 grams

Everything had to be cleaned up, strengthened and fixed. A new tail was made, which replaced whatever it was from years ago !
Initial indoor flight tests were good, so it was taken outside for a proper spin around the backyard. It's such a joy to fly one of these anyway after such a long time, with the full sun now being no issue, as a bonus. The high alpha is about right and the turning is great. Am very pleased with how it's turned out.

Video moved to Replies section underneath, to speed up page loading (not waiting for YouTube)
Posted by Slider2732 | Feb 12, 2016 @ 04:20 PM | 3,435 Views
Another catch up post, for an aircraft built last October that has gone onward to be a complete and total joy to fly.
It's the Avro Arrow, a fantastic Canadian jet from the 1950's, that was canceled after several had been built. Nearly everything, including the aircraft were immediately ordered to be destroyed. This bird was production ready !
The story itself of this beauty makes for great reading or viewing:
On YouTube /watch?v=7sFRiacvNYo for a documentary.
Also /watch?v=9PMnlnqRex4 for a film made about the planes story,


My own story
While out at the local field flying another plane, I saw something sticking up out of the ground. On walking closer to it, it was found to be an archery arrow !
It seems someone had been practicing and, perhaps because one of the vanes had snapped off the end, this arrow had been disregarded. I plucked it out of the ground and had the immediate idea that it could form a strengthening piece, like a CF rod, for an Avro Arrow. An arrow in an Arrow.

Specs:
Dollar Tree foam, paper removed
Wingspan: 18"
Length: 24"
Eflite 250 motor
5x3 toygrade Sky II prop
10A ESC
AR500 receiver
2x 3.7g servo's (odd implementation detailed later)
2S 450mAh Admiral lipo
Elevons as elevator, Rudder, Throttle
AUW 5.6oz

Initial tests were bad, there was no power from an old (2009) homemade CD-Rom motor. So that was changed to the Eflite 250. The prop had also been a GWS 5x3 and yet the toygrade one far excelled it for...Continue Reading
Posted by Slider2732 | Feb 10, 2016 @ 12:03 AM | 2,403 Views
It was a mid 1930's Soviet fighter, more info here:
https://en.wikipedia.org/wiki/Polikarpov_I-16

This one was built in October of last year, but only maidened in November. I'd actually been scared of it on its first outing, which amounted to a fast left hand lap of the small flying field and a quick landing !
It was at that point, that I realised that WOT flying wasn't needed, there was bags of power and she would actually fly at about 1/4 throttle.
On returning out for a real go, I ended up doing my first barrel roll ever - as seen at about 50 seconds into the video (video is silent, due to being taken with a Hubsan quadcopter 2MP camera, mounted on a hat).

Specs:
Dollar Tree foamboard (no paper)
24" wingspan, with KFm2
Wingspar made from a kitchen cooking rack metal bar !
AR500
10A ESC
Eflite 250 motor
5x3 type prop from a Sky II toygrade plane
2S 400mAh lipo
5.6oz
AET

Video now moved to the 'Comments' below.
The Blog loads much faster without waiting for YouTube previews.
Posted by Slider2732 | Jan 18, 2016 @ 11:13 PM | 3,891 Views
Finally, finally, finally !
Scubby is a Mini Super Cub type, Super Cubby, Scubby.
Featuring - FliteTest type power pod, magnet held KFm2 wings, quadcopter motor, single servo for ailerons, wings that were built originally for my actual MSC about 6 years ago as spare.

Dollar Tree foamboard
WS 30", ailerons, elevator, throttle
ZMR 1804 motor, 2400kV (intended for quadcopters)
Carbon 5x3 prop
Spektrum AR6110E RX
2x 9g servo
20A ESC
Admiral 450mAh 2S
AUW 6.6oz

Couple of mph wind, glorious clear sky, 35F...not so good about the last part, but anyway.
The idea, was to get this scratchbuild on video. Nothing fancy, just a leisurely fly around.
The magnetic wing works well, less than stellar landings see it pop clean off and pop clean back on. Also makes it an easy thing to transport to the field in a kitchen bin liner (lol)
The last part of the vid is fun. I'd intended to land her right next to my feet, but, overshot because she floats like a Zeppelin. Had to duck
(no audio, due to being a Hubsan H107C quadcopter 2MP camera...on a hat)

Video now moved to 'Comments' below.
The Blog loads much quicker without waiting for lots of YouTube vids to load.
Posted by Slider2732 | Jan 13, 2016 @ 10:37 PM | 3,387 Views
Following the idea to scan in, enlarge and build a wooden desk ornament type of kit plane from foam, this is my R/C version of a similar model.
The build plans for mine, were in a Harbor freight $1.99 model. How neat if such a thing could actually fly R/C and, other folks wishing to build would have the plans right there in the box. Plus, the plywood version of course, to practice the build.

Specs:
Wingspan is 11"/270mm
ItCanFly 900MHz transmitter and receiver
Homemade rudder actuator of 360 turns, 40AWG, piece of HDD for magnet.
Motor and gearbox from a Silverlit SingleWing.
150mAh 3.7V lipo
Weight is 22g


See video description for a link to GrandadIsAnOldman's original foam build.
Video now moved to the 'Comments' below.
(Blog loads much quicker without waiting for lots of videos to load)
Posted by Slider2732 | Jan 10, 2016 @ 09:06 PM | 3,046 Views
My build of the Micro F-22 by 'localfiend' from this thread:
http://www.rcgroups.com/forums/showthread.php?t=2487051

10" WS
AR6110E receiver
10A ESC
2x 3.7g servo's
250mAh Venom 2S
Unknown silvered 180 type brushless
Firebird Phantom prop
AUW 73g

Noting the heavy bare airframe weights of approx 30g for Dollar Tree foam with the paper left on, I decided to take it off and use packing tape for strengthening. That route, allowed the use of 'heavy' 3.7g servo's and the 17g motor.
Also added, was a piece of foam for launching, sitting behind the prop. Couldn't work out how to throw it otherwise !
The build has the front and rear surfaces connected by single linkages on each side...very novel and why i decided to try the build.

It goes great ! very precise control, plenty of power and is one aircraft to turn to if there is a bit of wind at the field.
I doinked the nose on the maiden, rebuilt that and have added a piece of BBQ skewer from nose to motor.

Flight footage has been moved to the 'Comments' underneath, to help to speed up page loading.
Posted by Slider2732 | Dec 29, 2015 @ 11:09 PM | 6,601 Views
This is a mod to extend flight times, reduce weight and clean up the look of a Hubsan H107C quadcopter.
Devised by good friend Aeronaught, it takes about 30 minutes.
The way I did it, needs a sharp hobby knife, small cross head screwdriver, a little piece of foamboard and some foam safe glue.

The cameras in these quads are 2 megapixel and i've found far more use for them on a hatcam or attached to other aircraft. So, we can save 4g that way straight away.
After removing the 2 screws, 1 on each side of the lower part of the quad, the plastic body pulls away.
4 screws to the sides of the battery area then allow access to the camera. It can be removed by either desoldering the 2 wires, or by using the knife to gently cut the wires at the solder join.
Now, we remove the red LED's and 1 blue.
The LED's come out easily enough, using the knife to carefully cut the wires at the circuitboard end with a little downward pressure. Then each motor pair of wires lift up and a push of each LED up and out each time releases them.
The 4th LED just has to have the motor wires lifted and then it can be passed down under the body. This is the one that will now poke out through the old camera lens area.
The hole where the camera lens went, is now replaced with a piece of foamboard (i used black, but white can be Sharpie'd to any colour you want)
A hole in the foam can be made using the same little screwdriver and then the foam can be glued in place with Aleene's or another foam safe glue. Put the LED through the hole.
Replace the screws and test.
Now, your quad will have 3 blue lights to show the quad direction, 2 on the top and 1 in the middle/front.

As reported by Aeronaught, his flight times have gone up from a meager 3 1/2 minutes and thereabouts to at least 5 mins. A great improvement !
The camera is now able to be used for other purposes, battery amperage draw is lower and the quad is just as readily flown with correct orientation.
Posted by Slider2732 | Dec 16, 2015 @ 09:16 AM | 3,494 Views
With reference to the FAA ruling.

Build models that just fall short of the legal limit*
No rules, no red tape, no fees, no registering, heck you don't even have to say it's for The 249 Club !
The idea being to simply fly and enjoy.
Practically, models should weigh between 230g and 240g, because we all know that the scales used by authorities will be perfectly calibrated in one way or another.










*
SEC. 336. SPECIAL RULE FOR MODEL AIRCRAFT.


(a) In General.–Notwithstanding any other provision of law relating to the incorporation of unmanned aircraft systems into Federal Aviation Administration plans and policies, including this subtitle, the Administrator of the Federal Aviation Administration may not promulgate any rule or regulation regarding a model aircraft, or an aircraft being developed as a model aircraft, if-(1) the aircraft is flown strictly for hobby or recreational use; (2) the aircraft is operated in accordance with a community-based set of safety guidelines and within the programming of a nationwide community-based organization; (3) the aircraft is limited to not more than 55 pounds unless otherwise certified through a design, construction, inspection, flight test, and operational safety program administered by a community-based organization;
(4) the aircraft is operated in a manner that does not interfere with and gives way to any manned aircraft; and (5) when flown within 5 miles of an airport, the operator of the aircraft...Continue Reading
Posted by Slider2732 | Nov 19, 2015 @ 10:44 PM | 3,359 Views
A few years ago, I built a plane with no conventional wings.
It was a variation of Willard Custer's Channel Wing concepts.
I wanted to build one slightly bigger, using the same sort of motors. It would be 2 channel, but featuring an actuator rudder mod to the ITC receiver.

Total weight: 1oz, 27 grams
Length: 13", 33cm
Wingspan: erm, 0"
Receiver: 2 channel Interactive Toy Concepts (replacing an Estes due to low range)
Motors: Cut down ducted fans from a Radio Shack Twin Turbine, with 6mm motors
Rudder modification: 450 turns of 40AWG, neo magnet, wires connected to +Left and +Right of the motors
Lipo: 1S 150mAh

More info about Willard Custer and his amazing lift principles:
http://www.pilotfriend.com/photo_albums/potty/17.htm


Flight footage has been moved to the 'Comments' below, to help to speed up page loading.
(Blog loads much quicker if older posts aren't delayed by YouTube)
Posted by Slider2732 | Nov 02, 2015 @ 11:27 AM | 3,370 Views
Those of us with now aging 2 channel birds from the mid 2000's are likely finding that the lipo's have busted. Nearly all toygrade models house the lipo's within the foam shapings. In other words...the planes are toast.

I decided to resurrect an ITC F-22 2 channel aircraft and by a probably unconventional method - to Bahoma the battery connections !

The aircraft had been gutted, back in the golden oldie days of modding, by cutting the thing apart and re-using the components. So the circuitboard was put back in, the motors hooked back up and then the mod was done for the lipo.
As it happens, a fave route back then for these was to slice off the nose. That enabled easy access of the parts. As bad luck would have it, the nose was missing, so I used one from another similarly fated F-22. The battery area was now exposed outside the canopy area...hmmmmm
By attaching small round neodymium magnets to the relatively thick power wires, they could be bent to approximate the connections of a small 90mAh Bahoma fitted lipo.
It worked great...a fresh battery being able to be plopped right in there and the connections simply 'snap' on to the lipo for flight.
CG was a bit off, so a piece of Blu-Tak sits in front of the lipo.

Altogether, it looks so wrong, but flys so right and there need never be an issue with a dead internal lipo ever again.


Flight video - no sound due to being on a homemade hatcam that doesn't have a microphone (Hubsan X4 2MP camera).
Footage has now been moved to the 'Comments' section below.
(Blog loads much quicker if older posts aren't delayed by YouTube)