URUAV BLS1806 Brushless HV Waterproof Metal Gear superfastCar Servo - for this price?

[donaldsneffe]

Hi guys,
what's wrong here?
This servo is sold for 27 bucks actually:

URUAV RC Car All Metal Servo BLS1806 18kg-cm 0.066s/degree Brushless





Torque:15kg-cm@6v 18kg-cm@7.4v
Speed:0.085s@6v 0.066s@7.4v/60°
Operating voltage:6-8.4v
Bearing type:dual bearing
Motor type:brushless motor
Gear type:titanium&aluminum alloy
Operate temperature:-20℃ to 60℃
Working frequency:1520μs/333hz
Dimension:40x20x38.2cm
Weight:70g


This seems impossible.
What's wrong?

Walter

 

[durok]

It's weak on the torque specification - I wouldn't use one in a crawler.

It IS fast, though - might be nice in other applications.

For a cheap servo I still would get the DS3218 over that one:

https://www.banggood.com/DSSERVO-DS3218-PRO-20KG-180-270-Waterproof-High-Speed-Metal-Gear-Digital-Servo-For-18-110-112-Scale-RC-Cars-p-1542162.html?rmmds=search&ID=6266225&cur_warehouse=CN

DSSERVO DS3218 PRO 20KG 180° 270° Waterproof High Speed Metal Gear Digital Servo For 1/8 1/10 1/12 Scale RC Cars

Brand: DSSERVO
Item: DS3218 PRO 20KG Digital Servo
Operating Voltage: 4.8 ~ 6.8 DC Volts
Torque: 21kg.cm(5V), 23.5kg.cm(6.8V)
Speed: 0.12sec/60°(5V), 0.09sec/60°(6.8V)
Dead Brand: 3μs
Motor Type: DC Motor
Gear Type: 25T Copper & Aluminum
Working Frequence: 50-333Hz
Rotation: 180°(PWM 500-2500μs) / 270°(PWM 500-2500μs)
Weight: about 60g (2.12 oz)
Size: 40 x 20 x 40.5 mm ( 1.58 x 0.79 x 1.60 in)

 

[donaldsneffe]

Hi,
check this one out:

https://www.youtube.com/watch?v=6Re_6vCxcgw&t=33s

I paid 11 Euro for it ... unbelievable (meanwhile BG has changed the price).

DS 3225SG Servo

Brand: DSSERVO
Item: DS3225 25KG Digital Servo
Operating Voltage: 5.0-7.4 DC Volts
Torque: 22kg.cm(5V), 24kg.cm(6V), 25.5kg.cm(7.4V)
Speed: 0.10sec/60°(5V), 0.08sec/60°(6V), 0.07sec/60°(7.4v)
Dead Brand: 2μs
Motor: Coreless
Pulse: PWM500us-2500us
Frequency: 50-333Hz
Gear: 25T
Gross Weight: 150g
Size: 40 x 20 x 38.5 mm ( 1.58 x 0.79 x 1.50 in)

Walterp=6S2910081756201209IA&custlinkid=471002[/URL]

 

[durok]

Hi,
check this one out:

https://www.youtube.com/watch?v=6Re_6vCxcgw&t=33s

I paid 11 Euro for it ... unbelievable (meanwhile BG has changed the price).

DS 3225SG Servo

Brand: DSSERVO
Item: DS3225 25KG Digital Servo
Operating Voltage: 5.0-7.4 DC Volts
Torque: 22kg.cm(5V), 24kg.cm(6V), 25.5kg.cm(7.4V)
Speed: 0.10sec/60°(5V), 0.08sec/60°(6V), 0.07sec/60°(7.4v)
Dead Brand: 2μs
Motor: Coreless
Pulse: PWM500us-2500us
Frequency: 50-333Hz
Gear: 25T
Gross Weight: 150g
Size: 40 x 20 x 38.5 mm ( 1.58 x 0.79 x 1.50 in)

Walterp=6S2910081756201209IA&custlinkid=471002[/URL]

I have - so far I have the original DS3218, the DS3218 Pro, and the DS3225 in my possession. I have yet to install the DS3225, so I can't report yet on it's performance.

I'll state for the record that I like to use stronger, name-brand servos for my 2.2" vehicles. My Bomber has used a ProModeler 470oz-in and a Holmes Hobbies SHV500 v1.