What do you think about "e-soaring"?

Homebuilt Aircraft & Kit Plane Forum

Help Support Homebuilt Aircraft & Kit Plane Forum:

henryk

Well-Known Member
Joined
Mar 8, 2010
Messages
6,498
Location
krakow,poland
Last edited:

John.Roo

Well-Known Member
Joined
Oct 8, 2013
Messages
1,081
Location
Letohrad / Czech Republic
Maybe I am wrong, however seems to me that eDA40 (based on DA40) will be operated as two seat airplane and Diamond will use weight reserve of two rear seats to install more batteries.
1634109195222.png
Makes sense to me - eDA40 is aimed to training segment (pilot schools) and they want to achieve endurance 90 min.

Interesting is also supplier of bateries.
1634109158119.png

Each box has following parameters
  • Voltage at Charge: 44.5 V
  • Nominal Discharge Voltage: 39.0 V
  • Voltage at Discharge Termination: 30.0 V
  • Nominal Capacity (C/2): 59.1 Ah
  • Standard Discharge: 60 A
  • Max Continuous Charge: 180 A
  • Max Continuous Discharge: 300 A
  • Peak Discharge: 600 A
  • Battery Energy: 2.305 kWh
  • Battery Specific Energy: 205 Wh/kg
  • Dimensions: 10.543” L x 5.495” W x 10.435” H (268 mm L x 140 mm W x 265 mm H)
  • Mass / Weight: 11.25 kg
  • Cooling: Air or Liquid Cooled
  • Cycle Life: 2000 cycles > 80% of Initial, 100% DoD
 

jedi

Well-Known Member
Joined
Aug 8, 2009
Messages
2,805
Location
Sahuarita Arizona, Renton Washington, USA
Nice conversion but curious how they add all that weight to the nose and stay with acceptable CG.

The GP 2330 that is for sale above would make an interesting electric conversion with wing mounted motors and perhaps this battery pack from post # 1,743 above.

Each box has following parameters:
  • Voltage at Charge: 44.5 V
  • Nominal Discharge Voltage: 39.0 V
  • Voltage at Discharge Termination: 30.0 V
  • Nominal Capacity (C/2): 59.1 Ah
  • Standard Discharge: 60 A
  • Max Continuous Charge: 180 A
  • Max Continuous Discharge: 300 A
  • Peak Discharge: 600 A
  • Battery Energy: 2.305 kWh
  • Battery Specific Energy: 205 Wh/kg
  • Dimensions: 10.543” L x 5.495” W x 10.435” H (268 mm L x 140 mm W x 265 mm H)
  • Mass / Weight: 11.25 kg
  • Cooling: Air or Liquid Cooled
  • Cycle Life: 2000 cycles > 80% of Initial, 100% DoD
 

John.Roo

Well-Known Member
Joined
Oct 8, 2013
Messages
1,081
Location
Letohrad / Czech Republic

=on the base of 202*80 mm 40 kW motor (KV=25, 55, 80.)
on video circa 55 kG thrust.

in CR mode...much more, 4 kG/kW !
This is not that bad result for MP20280 electric motor.
Freerchobby has really interesting range of products.

In my opinion is result of their test also affected by "plate" just behind motor intallation - with mode "aerodynamic" installation could be a bit better.
 

John.Roo

Well-Known Member
Joined
Oct 8, 2013
Messages
1,081
Location
Letohrad / Czech Republic

=iff 2x 25 kW in CR FLYGHT mode ?

Well.... I was thinking about test of one 25 kW motor with 2 (or 3) blade folding prop.
1x 25 kW is enough for me ;)

And don´t forget... 1 motor and 1 controller = 2 possible problems.
2 motors and 2 controllers = 4 possible probems :cool:
 

henryk

Well-Known Member
Joined
Mar 8, 2010
Messages
6,498
Location
krakow,poland
1x 25 kW is enough for me
=ONLY short time in MAX regime...

I think, the 20280 (40 kW) FRCHobby motor air cooling sysem have better...

=in CRFLIGHT regime cooling is much better (rotating stator and rotor !

"4 possible probems " =yes,but dyvidet by 2 (far from max regimes).
 

John.Roo

Well-Known Member
Joined
Oct 8, 2013
Messages
1,081
Location
Letohrad / Czech Republic
=ONLY short time in MAX regime...

I think, the 20280 (40 kW) FRCHobby motor air cooling sysem have better...

=in CRFLIGHT regime cooling is much better (rotating stator and rotor !

"4 possible probems " =yes,but dyvidet by 2 (far from max regimes).
I was thinking about 25 kW motor because I need +-15 kW of TakeOff power and arround 5-6 kW for horizontal flight ;)
 
Top