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jjmouris's blog
Posted by jjmouris | Feb 12, 2014 @ 08:49 AM | 2,797 Views
Many thanks to Georgi Mirov for making this possible. Without you my friend this would never have happened.

The planform design is my own, custom pitch distribution.

Nominal size is 17.5" x 20.8 @ 75% diameter.


Posted by jjmouris | Nov 19, 2013 @ 05:59 AM | 1,702 Views
Selling:

New Enigma / Alex
with upgrade to RW2b full flying elevator, removable.
Spare stock elevator
350

RW2 wing with 4 servo's and SM speed sensor tube, has flown, can supply fuselage to fit.
250

Optipower 6S 3300mah 35C one new, one used. Fits Enigma / Alex.
50/30

As new GM 18x23 v2
60

New RW4
Upgraded control horns and motor mount, includes 5 servo's.
Fits Hacker motors as well as Neu/Leomotion with spacer.
750

SOLD New 2x Dynogy 5S 1800mah 50C
60

SOLD New Avionik B10 fuselage, fits Neu 10S brick packs.
SOLD Fin with replaced servo.
SOLD Elevator.
200

Hacker B50 67mm 5 wind (4000kv) with 6.7:1 gearing
Castle Creations P180 modified for 6S
250

SOLD Hacker B50 5L (4830kv) with 6.7:1 gearing
150

Thunder Power 5S 3300mah 65C (fits RW4 perfectly)
For free with the RW4 !!!

Drop me a pm for a deal and shipping cost....Continue Reading
Posted by jjmouris | Nov 19, 2013 @ 05:17 AM | 1,810 Views
Reflashed HK200 speed controllers.

Good for 6S and up to 300A peak.

Includes ramping firmware, 1 second ramp.

60 euro shipped each.


Posted by jjmouris | Jun 03, 2012 @ 03:36 PM | 4,760 Views
So i thought i would share a little secret sauce from the F5B world for those who have no idea what all this stuff is about. Save you some work, make life a whole lot more easy. Some people don't want me to post this, and it is indeed a lot of invested time and effort i am about to share with you. You can buy me a beer some time.

End points;
For starters you have to realise that whatever you do with the signal coming from the TX is going to be between the end points you have set on the TX. If those end points are a long way beyond what the ESC is looking for, then your ramps will not take the amount of time / have the effect you expect them to have. So you might want to figure out where the end points need to be for your ESC before you start dialing things in to much. You can test this on the bench with a couple of cells less and no prop. When you have found the end points you need, you want to add a little extra for reliable operation.

Forward speed vs RPM;
The angle of attack (AOA) of a prop is what makes or breaks performance. Just like a wing, get the AOA to high and it will stall. There are two factors that determine the AOA during normal operation, the RPM and the forward speed of the plane. Fortionately unlike a wing, when the prop starts to stall it will only start to stall near the root of the prop blades and not stall completely. This means you still get a lot of thrust and just a small loss in efficiency. The bigger the part of the prop stalled, the lower...Continue Reading
Posted by jjmouris | May 14, 2012 @ 07:16 AM | 29,229 Views
Right, well i thought this would perhaps be a good location to collect data / ideas and so on.

The main concept may change as i go along.

The concept;

Make an open source firmware ESC capable of hardcore F5B abuse. Everyone can decide what firmware to use and modify things as they please. Lower the price of an ESC down to the parts + manufacture. No software provided, no guaranty. Proceed at your own parrel.

1ste phase;

Modify a cheap Chinese 200A controller to accept open source firmware. Probably what has been developed by SimonK for the multicopters or a little something from George Shering. Maybe add a little smoothing / ramp on the throttle input as we go.

http://www.rcgroups.com/forums/showthread.php?t=1513678
http://wiki.openpilot.org/display/Do...g+Instructions

The USBasp programmer
http://www.hobbyking.com/hobbyking/s...dproduct=21321
Red Brick 200A ESC
http://www.hobbyking.com/hobbyking/s...dproduct=18016
Red Brick 200A ESC with BEC
http://www.hobbyking.com/hobbyking/s...dproduct=18017
USB dongle
http://www.hobbyking.com/hobbyking/s...dproduct=10628

2nd phase;

Build our own controller to run with the above firmware. Use the same ATMega8 for the main processor. Upgraded mosfets and smaller form factor power boards. Likely to have a modular connector like the CC controllers. This would allow interaction with other projects from other people.

https://open-bldc.org/wiki/Open-BLDC

3de phase;

Build a new logic board with a better processor. Dependant on what processors become popular with the software writing community in the future.

If you are looking at my blog page, please click ''comments'' to continue reading.
Posted by jjmouris | Sep 23, 2011 @ 07:39 AM | 5,339 Views
(ESR = Electric Super Race)

Hi, thought i would open a blog rather then start a thread on this build.

The goal; build and fly a modern F3F/B with full competition F5B drive system.

This is not going to be another one of those lame electric conversions but instead this is going to be fast and furious. No compromise on the drive system. I won't be covering every single little detail of the build. Just some things that i am doing differently.

Parts list as it stands;

Viking 2 E Race (thanks Martin and Jiri)
4x Futaba S3150
2x JR DS285 MG (thanks Richard)
Hacker B50 special 67mm long 6 wind 3400KV with 6.7:1 gearbox
CC P180 fully George modified
Extra capacitor bank
Overlander Extreme 6S 5000mah 60C

I will add bits as i go along.

Feel free to comment on how crazy i am.