Replies to This Discussion

Permalink Reply by Chris on February 6, 2012 at 7:35pm

yeah, 8 x4.5 or so.

the frame has some pros and cons..  the pro being that in minor crashes it pops apart rather then breaking, but that makes the frame rather flexible... 

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Permalink Reply by John Campen on February 5, 2012 at 4:29pm

My X8 Quad specs

Board: AMP1

GCS: MP1.1.31

Firmware: 2.3

Quad X8 (coaxial 2 motors/ESC per arm sharing one APM signal)

3300mAh 4S 35-70C

Droidworx ADR Quad Standard, (72cmx72cm across)

Flight weight 2.4kgs

Motors 880kv Jdrones

8 Props 12x4.5

ESC 30A Jdrones

APM power supply. 5V, 3amp switching regulator (SVR3 Tahmazo)

Sonar XL-EZ0 (MB1200)

Declination:  -0.5899

Attachments:

• DSC_0029.JPG, 6.3 MB

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Permalink Reply by HangerRat on February 6, 2012 at 3:07pm

John,

If I wanted to plug your design into ECalc, what could I use to specify the motors. There is no 'Jdrones' in the list?

Thanks,

Mike

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Permalink Reply by John Campen on February 6, 2012 at 4:24pm

I asked Jani from Jdrones which one to use but he hasn't got back to me yet. The one I think comes closest from what I can see is the Turnigy TR2830-14.

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Permalink Reply by HangerRat on February 6, 2012 at 4:26pm

Cool,  when you do hear please post your finding.

I am climbing the Ecalc learning curve, trying out different scenarios. It is all pretty interesting.

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ModeratorPermalink Reply by Ruwan on February 10, 2012 at 11:53pm

care to share your eCalc experience here please? "using eCalc"  link: http://diydrones.com/forum/topics/using-ecalc?xg_source=activity  

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Permalink Reply by Helitrasher on February 7, 2012 at 1:40am

frame: Custom CF 820 x 820 @ 1200 grams with bat, gopro and custom gimble and unbreakable (posibly) !
controller/autopilot: APM1
motors: Turnigy 3010c (1300kv)
esc: Turnigy Trust 55A
propellers: 12x5 or Tri 9x4

battery: 22.2v 2300mah (6 cell)
flying time:7 mins

radio: Futaba 8
video/osd: Gopro
other: Can lift 1.5 extra Kilos for 6 mins

Misc (hacks/mods): not quite tuned yet but is stable.

Could everybody please leave there config files or there Pids so that we can compare (and copy).

photos:

Attachments:

• quad 010112.param, 2 KB
• 01062011145.jpg, 962 KB
• 01062011154.jpg, 1.5 MB

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ModeratorPermalink Reply by Ruwan on February 7, 2012 at 6:16pm

Yup, I also agree. Config files would help too.

Could you explain a bit about the APM mount? As I see, you've handled vibration issues.. 

regards,

Ruwan. 

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Permalink Reply by Jiro Hattori on February 12, 2012 at 4:08am

Here goes information about my quad.

Frame:                  Custom Quadcopter
Controller/autopilot: APM1
Motors:                 Turnigy C2830-1050
ESC:                     Turnigy 25A
propellers:             11x4.7, (Hobby city), HD-9050 (GWS, not good for this quad)
battery:                3S 2200mAh (Turnigy)
flying time:            5 to 10 minutes
radio:                    Futaba 617F
video/osd:             none
Sensors:               Sonar, Xbee, GPS/Mag,

Parameters are not fixed yet.

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Permalink Reply by John Campen on February 18, 2012 at 4:20pm

What is the fly weight? Also how did the tri props go and whats you opinion if these compared to 2 blades?

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Permalink Reply by Jiro Hattori on February 18, 2012 at 6:09pm

John

The total weight becomes 1.4Kg with LiPo.

Three blades hardly lift this slightly heavy Quad. They need higher revolution and waste power. On the 2 blades, the efficiency looks nice, however the behavior is quick.

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Permalink Reply by Helitrasher on February 12, 2012 at 10:20am

Sorry Ruwan for the late reply,

yes Vibration has been handled by fixing the APM to 1.0mm CF plates with giro tape and 3 nylon screws, then mounted to the Copter via 4 canopy washers on nylon standoffs.

Attachments:

• t-20411-7459.jpg, 2 KB
• 2012-02-12-011.jpg, 1.4 MB
• 2012-02-12-014.jpg, 1.2 MB

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