באיזה פרופ כדאי להשתמש על FunJet עם מנוע 2700KV וסוללה 4S?

[Scooter007]

רוצה לדעת המלצות גם למידה וגם של איזו חברה.
קצת מפחיד אותי לחשוב על להטיס אותו עם 6X5.5 Thin של APC ... אולי אני סתם פרנואיד.

[wind556]

הייתי מתחיל עם 5X5 APC, אבל לא הייתי מבטל את ה 6X5.5 ובודק עם מד אמפר
מה שכן, חשוב שזה יהיה APC ולא מה שמוכרים בהוביקינג

[Scooter007]

הייתי מתחיל עם 5X5 APC, אבל לא הייתי מבטל את ה 6X5.5 ובודק עם מד אמפר
מה שכן, חשוב שזה יהיה APC ולא מה שמוכרים בהוביקינג

ל APC יש כמה סדרות, אני מאמין שאתה מדבר על ה SPEED ולא ה THIN, נכון?

[Ronny Cohen]

I would be very couches with the size of the prop since you are using a 4S Lipo
you could start with a 6" with a 3.5" pitch APC SPEED at the most
. that will give you a Stall-thrust of about 1250 grams, a static thrust of 1900 grams and an electric power
of some 630 Watts. If you are using the Himax 2825-2700 Motor recommended
Approx. current expected with this kind of setup 47 Amps
Flight time will range from 5 min - 8 min mixed flight
For a more detailed spec. we need to know your electrical setup and motor choice

[Scooter007]

Thanks for detailed reply!
The motor I got is neu 1509 2.5d
http://www.castlecreations.com/products/neumotors/1500/1509/1509-2_5d.html

Does it affect your suggestion ?


I would be very couches with the size of the prop since you are using a 4S Lipo
you could start with a 6" with a 3.5" pitch APC SPEED at the most
. that will give you a Stall-thrust of about 1250 grams, a static thrust of 1900 grams and an electric power
of some 630 Watts. If you are using the Himax 2825-2700 Motor recommended
Approx. current expected with this kind of setup 47 Amps
Flight time will range from 5 min - 8 min mixed flight
For a more detailed spec. we need to know your electrical setup and motor choice

[Ronny Cohen]

With your set up it could look like: This is only a simulated calculation
,It is a lot of power!!! Be careful and mount the motor well

Static Thrust:2289g
33544 rpm
Stall Thrust:1520g

Power-Weight: 966 W/kg
439 W/lb
Thrust-Weight: 2.54 :
P(in) @ max: 869.7 W
P(out) @ max: 714.5 W
Efficiency @ max: 82.1%

Current: 58.76 A
Voltage: 13.29 V
Revolutions*: 33544 rpm
electric Power: 781.0 W
mech. Power: 714.5 W
Efficiency: 91.5%
est. Temperature: 48 °C

Flight Time: 4.1 min
Mixed Flight Time: 6.9 min

[Scooter007]

That's by using 6X3.5 prop, right ?
what is the top speed that I should expect ?

Thanks

With your set up it could look like: This is only a simulated calculation
,It is a lot of power!!! Be careful and mount the motor well

Static Thrust:2289g
33544 rpm
Stall Thrust:1520g

Power-Weight: 966 W/kg
439 W/lb
Thrust-Weight: 2.54 :
P(in) @ max: 869.7 W
P(out) @ max: 714.5 W
Efficiency @ max: 82.1%

Current: 58.76 A
Voltage: 13.29 V
Revolutions*: 33544 rpm
electric Power: 781.0 W
mech. Power: 714.5 W
Efficiency: 91.5%
est. Temperature: 48 °C

Flight Time: 4.1 min
Mixed Flight Time: 6.9 min

[Ronny Cohen]

Hi,
Yes it is in reference to the 6x3,5 prop.

I think it should be Very very fast, After all the thrust is 2,5 times grater then the planes

flying wait. I hope you have a "speed radar" to get the answer, it will be interesting to find out when you have facit.