Scythe Gentle Typhoon High RPM
We are too familiar with Gentle
Typhoon products of Scythe. Today, this Japanese company turns up in our review
with 3 hi-speed Gentle Typhoon High RPM fans.
Scythe packs its product, in a traditional
way, into transparent box with a piece of paper inside.
The
packaging
This packaging is sturdier than cardboard box
and it also allows observing the fan without pulling it out of the box.
Technical specs are also listed on the packaging.
The fans come with accessories: 4 screws
and 1 fixed cable.
The
accessories
According to the packaging, like most of
other products in this review, they are made in China. Though, Indonesia is actually
the country of origin if you look closely to the stickers. Each of the three
models costs $23, plus a 2-year warranty.
This hi-speed versions is distinguishable
from the ordinary Gentle Typhoons because of having a black frame and a black
impeller with additional ring for stiffening.
There is no mere changes here. The blades
are long and curved. The frame’s interior is smooth.
The
fan viewed from a tilt angle
The impeller featuring 7 blades is 109mm in
diameter while the motor’s diameter is 52mm. The weight is 216g.
The Scythe Gentle Typhoon High RPM series has
impressively high speeds. The lower-level models have a rated speed of 3,000RPM
yet the medium-level and hi-end models speed as fast as 4,250 and 5,400RPM. The
airflow is specified at 83, 116.5 and 150.1CFM. Obviously, noise is not a
priority for these fans but Scythe standardizes it at 36.5, 44.0 and 50.5dBA. Unluckily,
the static pressure is not claimed. We are curious to know what it is at such high
speeds.
The impeller is empowered with a ring
attached near the blades’ ends:
Blade
design
It still uses a dual-ball bearing featuring
a service life of 100,000h (or over 11 years of continuous usage). The sticker
on the motor informs the fan model, power specs and country of origin.
The
fans’ motors
The power consumption is high. The low-level
model needs 2.64W, the medium-level model needs 6.72W and the high-level model
needs 13.7W. That’s why the fan is only connected to a PATA power connector.
There is a cable specialized for speed regulation. Each cable’s length is
300mm.
Scythe Gentle Typhoon High RPM technical
specs (3 models)
·
Dimensions, mm: 120x120x25
·
Blade count: 7
·
Blade diameter, mm: 109
·
Stator diameter, mm: 52
·
Weight (spec. /meas.), g: 216
·
Voltage. V’ DC – rated: 12
·
Voltage. V’ DC – start: N/A
·
Rated current, A: 0.22(low) / 0.56(medium) /
1.14(high)
·
Input power, Watt: 2.64(low) / 6.72(medium) /
13.68(high)
·
Bearing system: 2 ball
·
MTBF, hours: 100,000
·
Fan speed – AVG: 3,000
·
Fan speed – delta, +/-: N/A
·
Airflow – CFM: 83(low) / 116.5(medium) /
150.1(high)
·
Airflow – m3/hour: 141(low) / 198(medium) /
255(high)
·
Static pressure, mmH20: N/A
·
Noise level, dBA: 36.5(low) / 44(medium) /
50.5(high)
·
Cable length, mm: 300
·
Connector: PATA
·
PWM: (-)
·
Fan speed control: (-)
·
LED: (-)
·
Made in: Indonesia
·
Warranty, years: 2
·
Price: $23
SilverStone SST-AP121
The SilverStone SST-AP121 is boxed
into a cardboard box with a window in the front:
The
packaging
Technical specs and key features are found
on the back.
The accessories are: a PATA connector for 5V
or 7V source, screws and silicone pins.
The
accessories
Made in China, the fan costs $15, plus a
2-year warranty.
The SilverStone SST-AP121 is pretty odd.
Its impeller has 7 wide translucent blades forming small angles.
The blades stretches out close to the rear
grid. The impeller’s diameter is 110mm. The motor’s one is 45mm. the fan weighs
180g.
We can also note such details as the thick
ends of the blades, the rounded-off edges and the flat interior of the frame.
SilverStone engineers seem to have tried to reduce the noise of the fan as much
as possible.
The
product viewed from a tilt angle
We know how effectively the grid works to
focus airflow from the test of our 140mm SilverStone AP141.
The fan specs include: 1,500RPM, 35.4CFM
(the air flow is very low in comparison with the other fans at such similar
speed), 1.71mm of water and 22.4dBA. It doesn’t support PWM-based regulation.
You can only adjust its speed by connecting the fan with a 5V or 7V source via
the PATA power adapter included.
The sticker is formative, showing a service
life of 50,000h.
The
fan’s motor
Its startup voltage is 5V. At the default
12V, the SilverStone SST-AP121 is assumed to consume about 4W of power. The
cable’slength is around 0.5m.
SilverStone SST-AP121 technical specs
·
Dimensions, mm: 120x120x25
·
Blade count: 7
·
Blade diameter, mm: 110
·
Stator diameter, mm: 45
·
Weight (spec. /meas.), g: 180
·
Voltage. V’ DC – rated: 12
·
Voltage. V’ DC – start: 5
·
Rated current, A: 0.09-0.33
·
Input power, Watt: 1.08-3.96
·
Bearing system: Fluid dynamic
·
MTBF, hours: 50,000
·
Fan speed – AVG: 1,500
·
Fan speed – delta, +/-: N/A
·
Airflow – CFM: 35.4
·
Airflow – m3/hour: 60.1
·
Static pressure, mmH20: 17.1
·
Noise level, dBA: 22.4
·
Cable length, mm: 500
·
Connector: 3 pin / PATA
·
PWM: (-)
·
Fan speed control: (-)
·
LED: (-)
·
Made in: China
·
Warranty, years: 2
·
Price: $15.0
SilverStone SST-AP121-L
SilverStone’s second
model, SST-AP121-L, is a copy of the previous product yet it features a
lighting system meanwhile the packaging and accessories are the same:
The
packaging
The fan owns a silver-plated frame and an
air-focusing grid. Its impeller looks translucent.
Its specs are the same as those of the
SilverStone SST-AP121, consisting of power consumption, though the lighting
system may affect the latter parameters.
The
fan’s motor
The lighting system’s color is green plus
it is seen most attractive, viewed through the back grid.
The
operating fan
SilverStone SST-AP121-L technical
specs
·
Dimensions, mm: 120x120x25
·
Blade count: 7
·
Blade diameter, mm: 110
·
Stator diameter, mm: 45
·
Weight (spec. /meas.), g: 180
·
Voltage. V’ DC – rated: 12
·
Voltage. V’ DC – start: 5
·
Rated current, A: 0.09-0.33
·
Input power, Watt: 1.08-3.96
·
Bearing system: Fluid dynamic
·
MTBF, hours: 50,000
·
Fan speed – AVG: 1,500
·
Fan speed – delta, +/-:N/A
·
Airflow – CFM: 35.4
·
Airflow – m3/hour: 60.1
·
Static pressure, mmH20: 1.71
·
Noise level, dBA: 22.4
·
Cable length, mm: 500
·
Connector: 3 pin / PATA
·
PWM: (-)
·
Fan speed control: (+)
·
LED: (-)
·
Made in: China
·
Warranty, years: 2
·
Price: $15.0
