ronaldopn's blog - RC Groups
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Posted by ronaldopn | Feb 07, 2018 @ 04:46 PM | 2,730 Views
First flight of last Sunday, this plane is pure fun
I wish my camera didn't have such a wide FOV.

Turnigy SK3 6364 213kV (rewound to 248kV)
12S 3300mAh 60C lipo (2x6S in series)
Hobbywing 100A HV ESC V3
Goteck HC 1621S HV servo
Skyline Raven 30cc (CMD Deodoro) (5 min 17 sec)

Posted by ronaldopn | Jan 02, 2018 @ 03:01 PM | 3,287 Views
I corrected a wing incidence issue which was causing snap turns to the right when applying up elevator in my brand new Skyline Raven 30cc.
Hope this may help other flyers passing through similar performance issues with their planes.
Details here,

Power system setup:
Turnigy SK3 6364 213kV (rewound to 248kV)
12S 3300mAh 60C lipo (2x6S in series)
Hobbywing 100A HV ESC V3
Goteck HC 1621S HV servo
Skyline Raven 30cc - wing incidence adjustment (5 min 11 sec)

Posted by ronaldopn | Dec 22, 2017 @ 04:38 PM | 2,158 Views
Step by step rewind of this 30cc equivalent motor.
Posted by ronaldopn | Dec 12, 2017 @ 04:27 PM | 2,184 Views
12th flight of my new bird, still mixing and playing with CG but I'm already loving it. I may write a build log for it since I took lots of pictures during assembly.
Sorry for the background noise but a club member was breaking his new nitro engine in.
Sorry also for the sharp cut at the end but my camera battery died right before landing.
Skyline Raven 30cc (4 min 49 sec)

Posted by ronaldopn | Oct 27, 2017 @ 06:03 PM | 2,389 Views
I bought the Turnigy RC Alloy stand a couple of months ago and liked it so much that I decided to keep it at my shop and create my own version to use at the field.
I ended up modifying it in a way that it is now more simple and compact than the original one. It is a bit more flexible than I would like due to the choice of wood so I may replace the wood sticks by thicker ones. With the current 2x2cm sticks the structure flex a bit but is extremely lightweight.
I used only cheap materials and I believe the total cost was around $20.
Here are the steps:
Posted by ronaldopn | Sep 16, 2017 @ 07:33 PM | 2,388 Views
Well, my Edge had its last flight today...
After a parachute maneuver the wings ripped the fuselage structure off and plane plunged to its death
I need to buy better planes or start flying a bit less aggressively the 6S lipo survived with minor scratches but the 5S was totally destroyed.
Here is a quick video edit of what was certainly my funniest and most awesome crash
Skyline Edge 30cc Final crash (2 min 27 sec)

Posted by ronaldopn | Aug 04, 2017 @ 06:43 PM | 2,689 Views
My latest and most beautiful 3D bird.
Build thread here:
GOPR0671 (6 min 10 sec)

Posted by ronaldopn | Apr 08, 2017 @ 07:20 PM | 5,052 Views
Today I had my first in-flight fire accident
On the third flight I was giving some 3D tips to a friend using a wireless setup I just made. I took back the controls to land when I noticed some smoke and a stopped prop. When the plane passed in front of me I could see the flames on the right side.
ESC is a complete toast but the plane can be easily repaired. I was not happy using this 70A ESC as it was right on the limit (I get over 70A with a fully charged pack) so it was most likely an overheating issue.
I still need to test the motor but the BEC is working fine. Luckily I always solder the BEC directly to the ESC connector which means that as long as the battery is functioning I still have power to the receiver and servos.
I have a 100A and 120A ESC on the way so I should have the plane ready for next weekend.

Fire starts at 3:50
GOPR0497 (5 min 35 sec)

Just updating
Now I don't believe the ESC was the culprit but in fact, the victim.
When I started repairing the plane I checked the motor and it was not rotating freely (had a hard spot). After disassembling it I confirmed one loose magnet. I believe the magnet moved forward during the climb at full throttle (when the magnetic forces are at its maximum). When it moved it created a lot of mechanical resistance which caused the ESC to overheat when I applied power.

I checked motor and ESC after the first flights with this plane and both were getting just warm. It would be very strange for the ESC to burn
...Continue Reading
Posted by ronaldopn | Apr 03, 2017 @ 08:38 AM | 5,486 Views
I have a new favorite toy: my Skyline Edge 540 30cc.
I've always wanted to have an Edge due to its famous 3D characteristics and I had an eye on this one for a while as I loved its looks so when it came back to stock for $207 I grabbed one.
Less than 10 flights so far but already loving it. I made custom SFGs for it since I'm addicted to flying with them.
Build thread here.
Skyline Edge 540 30cc CMD Deodoro (5 min 19 sec)

Posted by ronaldopn | Mar 04, 2017 @ 07:25 PM | 5,531 Views
One from today (full screen mode recommended)
Build log here
Skyline Raven 60" 70E 04th/Mar/2017 (4 min 43 sec)

Posted by ronaldopn | Feb 02, 2017 @ 07:57 PM | 5,871 Views
Practicing hovers above the water. This is a maneuver I rarely do as I find it quite boring and very demanding on the power system but practicing over water added a bit of fun factor.
Build log of the plane here.
Skyline Raven 60" 70E 02nd/Feb/2017 - hover over water (5 min 14 sec)

Posted by ronaldopn | Jan 15, 2017 @ 01:01 PM | 5,670 Views
First flights with the new Skyline Raven 60" 70E. Build thread here
Skyline Raven 60" 70E 10th flight CMVM Deodoro (4 min 44 sec)

Skyline Raven 60" 70E 12th flight CMVM Deodoro (4 min 29 sec)
...Continue Reading
Posted by ronaldopn | Jan 01, 2017 @ 07:28 AM | 6,334 Views
Woke up early on 31st/Dec and went to my new RC club (15min from home). I was able to make six great flights alone and I was back home around 10:30am. What a great way to close 2016
Happy new year!
Due to the wide angle lenses it is better to watch in full screen mode.
Skyline Sbach 342 60" - CMVM - 31st/Dec/2016 (5 min 29 sec)

Posted by ronaldopn | Dec 30, 2016 @ 07:15 AM | 6,233 Views
If you know someone who has basic sewing skills here is a step by step guide to make a customized wing bag. Nothing fancy but very practical. If the person likes to sew it will be definitely a fun project
Wing bags are quite cheap so not really worth the hassle for most people. Since I have all the tools and materials in hand it takes me around 30min to make one so it is really convenient. Having the ability to customize size, add pockets, etc is really nice too. I have one like this for each of my planes.

What you'll need:
  • Sewing machine: I'm using my Singer 20U which I used a lot when I was doing parachute repairs. It is an industrial machine but any domestic sewing machine will do the job.
  • Fabric: I bought a synthetic leather type which has a soft cloth backing (suede). This fabric does not fray so you don't need to bother adding trim tape or sewing zig zag stitches at the edge of the seams which speeds up the job tremendously.
  • Thread: I use nylon thread size E which I have plenty (parachute repairs);
  • Velcro: as required, see the pictures
  • Nylon tape: For the handle, I use parachute webbing but that level of strength is obviously not necessary.
...Continue Reading
Posted by ronaldopn | Dec 29, 2016 @ 07:19 PM | 5,782 Views
One flight from today. Very windy, I flew only 3 batteries as the winds just got worse. Temperatures are passing 40C/ 104F here which create very windy/ turbulent days.
I'm practicing a new cool transition from 2 of my favorite maneuvers. It starts with an inverted pop top transitioning to the KE spin. It is the first maneuver you see in the video.
I'm also trying to improve my loncevaks (crankshafts), I want to exit the maneuver in level flight (upright or inverted) not diving.

Skyline Sbach 342 60" 70E 29/Dec/2016 (5 min 23 sec)

Posted by ronaldopn | Dec 08, 2016 @ 04:53 PM | 6,031 Views
After the crash of my Corvus 540 I picked my other favorite plane to have some fun. It's been a while since I flew this bird but I really love it.
I'll try to practice only on the Sbach from now on until I'm really in tune with it.
Skyline Sbach 342 70E 60" (4 min 48 sec)

Sbach 342 70E (4 min 51 sec)
...Continue Reading
Posted by ronaldopn | Nov 05, 2016 @ 01:32 PM | 6,417 Views
I made a mistake when drilling the firewall of my Skyline Corvus 59" (used the X mount of a larger motor as a template) and ended up having to make a new mount. Here is the step by step procedure.
In case you're wondering if it is strong enough (over 30 flights so far )...
Skyline Corvus 59" 10th flight (5 min 5 sec)


1 - Wear adequate protection (mask/ gloves) when working with fiberglass.
2 - Do not forget to add strips of fiberglass cloth before filling the mold with resin. It is the combination of cloth + resin that creates the fiberglass strengh
...Continue Reading
Posted by ronaldopn | Nov 05, 2016 @ 01:11 PM | 6,285 Views
This is how I transport my spare props to the field. Since I don't fly at an RC club it needed to be simple and small.
It is simply a piece of PVC pipe with 2 caps, one side glued.
You just need to choose the length and dia to suit your props. You may make it in different sizes to suit different planes.
Tip: put a mark or paint the free cap so you know which side opens (believe me, it can be really annoying without it )
Posted by ronaldopn | Nov 05, 2016 @ 12:34 PM | 6,403 Views
I did this mod over 2 years ago and it's been working flawslessly since then. Once you try a wireless RC simulator you'll never go back to cable.

For some reason 2 years ago my HK wireless dongle stopped working and was not being able to convert the Taranis receiver channel signals to PPM.

During my research (my Taranis was still new to me at that time) I discovered that my D8R-XP receiver (as many other FrSky receivers) can output PPM signal which is the type of signal used by trainer ports and simulators.

Using the great tips and video from CPO I was able to send the CPPM signals from the D8R-XP receiver through a 3.5mm stereo jack straight to the dongle. In order words the dongle receives the PPM signal as it would from a training cord. To avoid having to plug a battery to the receiver (as PPM signal does not supply power), I used the original dongle cable simply disconnecting the signal (white) plug.
What you need:
- a receiver that can output PPM signal
- a mono or stereo 3.5mm plug (mono should be easier but I had stereo in hand)
- servo lead (used one from a dead servo) - cut red wire shorter when soldering or remove pin from plug. You just need the white and black wires.

You can use this tip to convert your cable sim to wireless and also make a wireless buddy box (just plug a 4.8V battery to the receiver)

Tricky part: soldering audio wires. Search on youtube for headphones soldering/repair. To do this correctly you must remove the varnish with a 600 grit or burn it with a lighter. The varnish will not allow soldering if you don't do this. Be careful to leave the varnish where the wires enter the insulation to avoid shorts.
Posted by ronaldopn | Oct 29, 2016 @ 08:36 PM | 6,358 Views
Rewind of the EMP 6364 to 236kv. This motor will be installed on a Skyline Corvus 30cc which I will run on a 11S setup.
Motor was rewound using the half parallel dLRK winding scheme, using a single AWG19 wire.
This winding coupled with the replacement of the original multi strand by a single thick copper wire makes for an extremely powerful and efficient motor which runs much cooler.
Motor rewind thread here
A build log on the plane should follow soon.