HI,
I am new member in the X-UAV Talon club, I have just received my Talon with the extension wing.
I'm working to put the right combination of motors, prop and batteries:
I am looking to have the maximum flight duration over 90 minutes.
The weight of my FPV gear with all antennas, cables, cameras is around 750g.
The weight of the talon + motors + ESC + servo is around 1400g, So the total weight without the batteries is around 2150g
Regarding the battery, I can use multiple options based on motors and prop:
Multistar Battery Weights:
3S 5200 mAh is 325g.
4S 5200 mAh is 433g.
Option1: 3S configuration 2 parallel batteries => 3S 10,400 mAh: 650g. Total flight weight 2,800g
Option 2: 6S configuration, 2 series batteries => 6S 5,200 mAh: 650g, Total flight weight 2,800g
Option 3: 4S configuration, 2 parallel battery => 4S 10,400 mAh: 866g.Total Flight weight: 3,016 g
Option 4: 3S configuration 4 parallel batteries => 3S 20,800 mAh: 1300g. Total flight weight 3,450g
Option 5: 6S configuration 2 parallel + 2 series => 6S 10,400 mAh: 1300g.Total flight weight 3,450g.
What motors and prop should we use with every option, and what flight duration will we get?
I have those motors: but I can buy others if needed:
Motor 1: OSMG9530 http://www.osengines.com/motors/motors/motor-specifications.pdf
OMA-3825-750 (.30 Size)
Rotor Diameter (mm): 38
Magnet Length (mm): 25
kV: 750
Watts: 590
Weight (oz/g): 6.7 (190)
Motor 2: Jamara E-Motor Magnum A2820/6
http://www.conrad.at/ce/de/product/428816/Jamara-E-Motor-Magnum-A28...
Specifications Revolutions / v : 1000
Internal resistance : 59mOhm
Idle current: 2.0A
Max A: 37A / 60S
Shaft Diameter : 4.00mm
Output: 550-Watts
NiMH Battery : 8 ~ 14
LiPo Battery : 3 ~ 5
Propeller NiMH: 11x8 Propeller LiPo : 3xLiPo 11x6 / 10x7 4xLiPo
Application: 1000-2500g
Motor 3: Emax BL2826/06: http://www.toysonics.com/emax-bl2826-06-950rpm-v-outrunner-brushles...
Features
New Emax BL2826/06 950Rpm/V Outrunner Brushless Motor
Model: BL2826/06
No. Of cells: 3-4 Li-Poly
RPM/V: 950
Max. efficiency: 86%
Max. efficiency current: 20- 30 A (>78%)
No load current / 10V: 2.1 A
Current capacity 61 A/60s
Dimensions: 30x26 mm
Shaft diameter: 5 mm
Weight: 182 g/6.41 oz
Recommended model weight: 2-3.2 kg
Recommended prop without gearbox: 13*8; 12*8
Elios
Replies
A 40 A ESC "should" be fine, you won't be drawing that much current.
Don't use wooden props, the tips will hit grass/twigs, etc on landing, and break.
I have been developing multicopters so no deep knowledge for planes.
I got the idea against wooden props.
Actually, I think the same danger (hitting the grass/twigs) exists for APC props.
I have never used wooden but will try.
@Eliot,the negativity is price.
ZTW 40A opto 600hz esc $14 while 90A opto YEP esc $111.
Anyway any esc opinion for sunnysky 3508 580kv?
Baris, my current measurements are somewhere on this blog....
APC props get marks on the from hitting grass, etc, but they don't break easily.
Electric wooden props are very flimsy.......
For landing I cut all power, and let the motor windmill, it sort of acts as an airbrake.
Also, if it is spinning on landing, it won't hook up easily.
My feeling is that a stationary prop can hook up solidly with vegetation, and rip the motor out, or break. I've seen that happenon someone else's aircraft...
I am using 3S and I see 37A + when I am at maximum speed. that's why I prefer 75A and already I had the 100A so I am ok with it.
I don't know if there is some negativity in it. is there?
Go for the Castle Edge. http://www.castlecreations.com/products/phoenix-edge.html 75 or 100
or http://www.castlecreations.com/products/phoenix-edge-lite.html 75 lite or 100 lite.
They are the best.
I've tied the config on 17" with e-calcs and i got this with RcTimer X6 motors (X6 Motors):
If i try on 13" i loose flight time
Joffrey, are you talking about a quadcopter? Perhaps I'm the one confused, but I believe Elios posted about power systems for this:
Oh yes i'm talking quadcopter, i don't understand because my frame's name is "Talon" too
@Joffrey, I don't know who the manufacturer of your quad is, but the Talon fixed wing (as pictured above by Trung Nguyen) has been well-known with-in the community for a couple years now.
Sorry the quad company didn't pick a new name for their craft.