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FPV60

#1
Hello,

I am going to make a FPV60 from schraut5 but I have a question about the engine.
http://www.youtube.com/watch?v=kzKhaKWSyVY

Schraut5 uses this motor:
http://rchotdeal.com/
Power 15 Size Outrunner Brushless Motor A2820-6 (2.5-5.5 lb. plane)

(Cant give the link exact link)

But i want the same motor from hobbyking because that will be easier for me.
So please help me, I dont know which engine is good and I tried to search for one but I failed because I dont know anything about engines.

Schraut5 uses an APC 11X5.5

APC 11 X 5 E 10.56 V 19.28 A 40.24 oz 199.52 W
APC 11 X 5 E 14.961 V 32.21 A 67.63 oz 472.56 W

Specs:

No. of Cells: 3 - 5 Li-Poly
8 - 14 NiCd/NiMH
Kv: 1000 RPM/V
Max Efficiency: 82%
Max Efficiency Current: 15 - 25A (>75%)
No Load Current: 2.0A @10V
Resistance: 0.059 ohms
Max Current: 37A for 60S
Max Watts: 550W
Weight: 132.5 g / 4.67 oz
Size: 35 mm x 47 mm
Shaft Diameter: 4mm
Poles: 14
Model Weight: 1000 - 2500 g / 35 - 88 oz
Use this motor with 3-5 cell Li-Poly packs and 9-11 inch props on planes up to 88 oz flying weight. Manufacturer recommends a 11 x 6 prop on 3-cells and 10 x 7 prop on 4 cells. We suggest propping for around 480 watts continuous.

Similar to AXI Gold 2820/12, Welgard C3548-05, E-Flite Power 15. Roughly equivalent to .32 2-stroke or .40 4-stroke glow engines.

The motor features a 4mm hardened steel shaft, dual ball bearings for the shaft and has 4.0mm gold spring male connectors already attached with 3 female connectors included for your speed control. Also includes accessory package with the pictured aluminum radial cross mount set with 8mm prop adapter. Mounting holes are spaced 19mm on center and are tapped for 3mm (M3) screws.



Propeller: Volts (V): Amps (A): Thrust (g/oz): Power (W):
No. of Cells: 3 - 5 Li-Poly
8 - 14 NiCd/NiMH
Kv: 1000 RPM/V
Max Efficiency: 82%
Max Efficiency Current: 15 - 25A (>75%)
No Load Current: 2.0A @10V
Resistance: 0.059 ohms
Max Current: 37A for 60S
Max Watts: 550W
Weight: 132.5 g / 4.67 oz
Size: 35 mm x 47 mm
Shaft Diameter: 4mm
Poles: 14
Model Weight: 1000 - 2500 g / 35 - 88 oz
Use this motor with 3-5 cell Li-Poly packs and 9-11 inch props on planes up to 88 oz flying weight. Manufacturer recommends a 11 x 6 prop on 3-cells and 10 x 7 prop on 4 cells. We suggest propping for around 480 watts continuous.

Similar to AXI Gold 2820/12, Welgard C3548-05, E-Flite Power 15. Roughly equivalent to .32 2-stroke or .40 4-stroke glow engines.

The motor features a 4mm hardened steel shaft, dual ball bearings for the shaft and has 4.0mm gold spring male connectors already attached with 3 female connectors included for your speed control. Also includes accessory package with the pictured aluminum radial cross mount set with 8mm prop adapter. Mounting holes are spaced 19mm on center and are tapped for 3mm (M3) screws.
 
Last edited:

colorex

Rotor Riot!
Mentor
#3
Missed this thread.

If you search 2820 on HobbyKing it shows you this motor:

TR 35-42D 1000kv Brushless Outrunner eq: AXi 2820T

But that motor has been replaced with this one:

LiNK

 
#4
Missed this thread.

If you search 2820 on HobbyKing it shows you this motor:

TR 35-42D 1000kv Brushless Outrunner eq: AXi 2820T

But that motor has been replaced with this one:

LiNK

Yea saw That one to. My wing Will be 30 cm shorter wont it be to overpowered? Also i want it to be efficient and capabele of 30 minutes flights with 2 2200 mah 3 Cells for 4400 mah.
 

colorex

Rotor Riot!
Mentor
#5
Yea saw That one to. My wing Will be 30 cm shorter wont it be to overpowered? Also i want it to be efficient and capabele of 30 minutes flights with 2 2200 mah 3 Cells for 4400 mah.
Battery duration is all about throttle conservation - use minimum throttle all the time and it'll last forever.
 
#6
A low kv motor and large prop should help also I believe. I'm running a DT700 motor with a 12x3.8 prop, and can fly a 1lbs foam FPV plane for 15 minutes with a 3S 2200mah. Keep in mind, this wont get the plane going very fast, but should push enough air with minimal throttle to keep the plane airborne.

The BUT is, I've never seen that combo on flying wings. Usually they are high kv motors with small props. I still haven't figured out the relationship between those two concepts, and how you get more flight time from a given setup.
 
#7
A low kv motor and large prop should help also I believe. I'm running a DT700 motor with a 12x3.8 prop, and can fly a 1lbs foam FPV plane for 15 minutes with a 3S 2200mah. Keep in mind, this wont get the plane going very fast, but should push enough air with minimal throttle to keep the plane airborne.

The BUT is, I've never seen that combo on flying wings. Usually they are high kv motors with small props. I still haven't figured out the relationship between those two concepts, and how you get more flight time from a given setup.
Yea I still find it hard to know which combos are right. Yesterday I heard from a guy with experience about this subject that a motors give about 4watts per gram. So if your motor is 100 gram it will give about 400 watts. He is also making a wing, slightly bigger and he uses an 1000 kv ntm propdrive with 11x6 foldable prop. I think that I am going to buy that.
 

Carbon

Elemental Madness
#9
Yea saw That one to. My wing Will be 30 cm shorter wont it be to overpowered? Also i want it to be efficient and capabele of 30 minutes flights with 2 2200 mah 3 Cells for 4400 mah.
What is this "overpowered" you speak of? Like colorex said, just use less throttle. My Super Cub is "overpowered" but it flies great when you pull back on the throttle , keep it at like half all the time.