  This
complete new development replaces both the RK 530-E and RK 740-E. The
new HW 730 is happy with standard motors, but reaches the performance of
the discontinued RK-740-E.
For the first time ever this
kit comes with a handlayed seven bladed carbon fibre rotor. This brought
the weight of the rotor down to a mere 34 g, which reduces vibrabtions
remarkably, and makes the fan running very smooth.
At the low end you may start
with SPEED 700 motors, and can reach about 12 N of thrust. A typical
choice would be an Ultra 1300-9 running on 20-24 cells. Here again the
fan unit is able by design to build up a remarkable pressure. Most of
the readings have been done with the optional 80 mm Ø exhaust nozzle!
If you go for a bigger 92 mm
Ø nozzle static thrust readings are even higher.
Mounting time for this unit is
about two hours..
|
Specifiactions:
Rotor: 105 mm,
7-bladed
Stator: 4-bladed
Weight: about 148 g
(internal parts + shroud)
Outer diameter of inner
tube: 106
mm Ø
Inner diameter of ducting: 52
mm Ø
Ageo:
67,0 cm²
Aeff:
50,0 cm² (80
mm Ø exhaust nozzle)
Static thrust: about 10-25
N
Kit comprises:
rotor, inner tube with stators,
adaptor (5,00 mm), outer tube, streamlined cone, CNC machined formers,
spinner, intake lip (optional), nozzle (optional), tiny bits
| Measuring
Results |
| Cells |
Motor |
V |
A |
W |
U/min |
N |
m/s |
Etages |
|
| 14 |
SPEED
700 BB turbo 8,4 V |
14,8 |
36,6 |
542 |
|
13,4 |
47,3 |
0,58 |
80
mm Ø nozzle |
| 24 |
SPEED 700 BB turbo 12 V |
24,0 |
22,5 |
540 |
|
12,3 |
45,2 |
0,51 |
80 mm Ø nozzle |
| 24 |
Ultra
1300-9 |
25,4 |
36,8 |
935 |
|
17,2 |
53,5 |
0,50 |
80 mm Ø nozzle |
| 24 |
25,0 |
32,5 |
813 |
|
18,3 |
47,7 |
0,54 |
92 mm Ø nozzle |
|
24
|
HP
370/20/A2S "SL"
|
24,0
|
41,0
|
984
|
|
23,0
|
53,6
|
0,62
|
90 mm Ø Düse,
fut. 55bo
|
|
26
|
26,5
|
46,0
|
1.219
|
|
26,0
|
57,0
|
0,61
|
90 mm Ø Düse,
fut. 55bo
|
| |
| Battery
pack used: Sanyo N-SCRC cells or similar, if battery
is used |
Items:
| HW 730-5 HW 730,
5,00 mm adaptor |
| HW 730-L HW 730
rotor with spinner |
| HW 730-ST HW 730
set of stators |
| WMT 201 Intake
lip |
| WMT 202 Exhaust
nozzle |
| HW 730-R1 HW 730
tube di= 106 mm, 17,5 cm length |
| HW 730-R4 HW 730
tube di= 106 mm, 40,0 cm length |
|
