What about a Twin EDF FT Cruiser ?

|nickatredbox
What about a Twin EDF FT Cruiser ?

 

Got 2 Dr Mad EDF's Coming 20% More Thust

 

Dr. Mad Thrust 50mm 10 Blade Alloy EDF 3300kv

Input Voltage: 4S 14.8V lipoly
Rotor Diameter: 50mm 10 Blade
Outer Diameter: 53mm
Weight: 93g with 2mm bullet connectors
Motor: 20-40 Brushless Inrunner 3300kv
Max Amps: 27A
Max Thrust: 650g

 

Twin Jet Cruzer Speed Build

 

 

 Jets tape into the nacelles 

 

What about a Twin Jet Cruiser 

Love Josh's design hope he doesn't mind if I mess with it a little ? My apologies in advance for using Napoleon units on the drawing :)

Under slunk nacelles would be simpler to engineer I think

 

Testing 2 X Hobbyking 50mm Alloy EDF V2 4200kv Thrust 850 grams @ 36 Amps 

 
Blended Canberra nacelles look great but make the wing a bit complex

May be blend the nacelles into the wings like a Canbera so they are not under slung as above. The spar would have to be revised as the EDF cuts through it, the nacelle could be made structural to compensate for the 2 peice spar

 
Perhaps this would work? looks like the HK Alloy 50mm fits in the wing nicely. May be the aeleron should extend  into the air flow from the EDF? or would this give them way to much autority?

The power requirements are similar go for a 2.2Ah 4S Nano Tech is a great battery very little voltage sag under load. Should give 1.1 Kgs(2.4 Lbs) static thrust, should be better than 1:1 mass / thrust ratio. 

In my experiance with jets it should go like scalded cat.

This might work a couple of carbon spars in the airflow crossing each end of the EDF

 

Does anyone have an idea regarding thrust angle?

This video shows some interesting charecteristics with thrust tubes

<iframe width="640" height="360" src="http://www.youtube.com/embed/qLuydmx9xWs?feature=player_detailpage" frameborder="0" allowfullscreen></iframe>

 

Power Options

Hobbyking 50mm Alloy EDF V2 4200kv (4s Version)

Ran these on the thrust rig at the week end they are very well balanced and on the 4S Nano Tech 2200 mAh they push alsmost 600grams a peice

Hobbyking 50mm Alloy EDF V2 4200kv (4s Version)

The Hobbyking Alloy EDF series are pre-assembled and dynamically balanced making them simple and easy to fit, no unit assembly is required. As well as high power, these fans have excellent cooling and run so smoothly, the sound is amazing, there is also no housing distortion unlike plastic fans. This nice quality, powerful fan is a great way to upgrade your foamy 50mm jet to a missile in around an hour!

Features:
Pre-assembled
Factory dynamically balanced
High power with superior cooling
High quality construction
Fully servicable
Fast to fit
No housing distortion

Specs:
Rotor Diameter: 50mm 5 Blade
Outer Diameter: 54.5mm
Weight: 85g with 2mm Connectors
Motor: 20-40 Brushless Inrunner 4200kv
Max Amps: 22A

 

EDF64 with ADH300 Motor Assembled  252W 

EDF64 with ADH300 Motor Assembled 252W(4300kv)
This unit has the ADH300 motor, producing more power, yet drawing more current.
If your plane can take a larger battery (2200mAh+) then the ADH300 motor would be a suitable option.

Spec.
Test Voltage: 11.1~14.5v (3-4S)
Test Current: 16A
Thrust: 540g
Power: 252W
Motor: ADH300L


Turnigy nano-tech 2200mah 4S 25~50C Lipo Pack

Turnigy nano-tech 2200mah 4S 25~50C Lipo Pack

Spec.
Capacity:2200mAh
Voltage: 4S1P / 4 Cell / 14.8V
Discharge: 25C Constant / 50C Burst
Weight: 239g (including wire, plug & case)
Dimensions: 119x35x32mm
Balance Plug: JST-XH
Discharge Plug: XT60


HobbyKing 30A BlueSeries Brushless Speed Controller

HobbyKing 30A BlueSeries Brushless Speed Controller

Spec.

Cont. Current: 30A
Burst Current: 40A
Battery: 2-4 Cell Lipo / 5-12 Cell Ni-XX
SBEC: 5V/ 3A Output
Size: 23*43*6mm
Weight: 28g

0 comments

Leave a comment

Please note, comments need to be approved before they are published.

Have a story to share?

Share your builds, flying experiences and tips with the Flite Test community.

Write For Us →