What's the ideal servo specs to meet your demand?

servoman

New Member
I also try to find our what's the ideal servo specs to meet your demand? :rolleyes2:

I had made servos since 1981.

May be way much more than 50KK servos were made. :biggrin:

We just make a new servo: GWS S03N3



S03N3 S D MG 2BB 6.0V 0.152sec 35.0kg-cm 4900mA - RC Groups

A standard size servo that give speed and torque as below:

S03N3 S D MG 2BB Test datas just measured as below:
4.8V 0.180sec 29.5kg-cm 3800mA
6.0V 0.152sec 35.0kg-cm 4900mA
7.4V 0.119sec 41.0kg-cm 5400mA
8.4V 0.111sec 43.0kg-cm 5700mA

Let's compared with F Brand S9075SB Digital HT S.Bus Programmable Servo
Dimensions: 1.59 x 0.83 x 1.47" (1-5/8 x 13/16 x 1-1/2") (41 x 21 x 38mm)
Torque: 425 oz-in (31 kg-cm) at 6.0V
Speed: 0.14 sec/60° at 6.0V
Weight: 2.6oz (73g)
Price: $199.99 But Tower Hobbies sell at: $149.97

GWS S03N3 S at 6.0V 0.160sec 35.0kg-cm 4700mA
Pretty similar? Not exactly! Our S03N3 test datas were collected when stall for 30 seconds, let motor become very hot and weak. So, when motor is cool, S03N3 S D measured at 43~46Kg-cm.

GWS price of GWS S03N3 S is MSRP $100.00, yet GWS is full CNC servo cases with 2BB and full metal gears which cut by Swiss machineand made in Taiwan.

●S03N3 ( STD )
0.131Sec/[email protected]
0.110Sec/[email protected]
0.100sec/[email protected]
0.094sec/[email protected]

●S03N3 F ( FAST )
0.115Sec/[email protected]
0.094Sec/[email protected]
0.078Sec/[email protected]
0.070Sec/[email protected]

●S03N3 XF ( XTRA FAST )
0.094Sec/[email protected]
0.080Sec/[email protected]
0.067Sec/[email protected]
0.063Sec/[email protected]

When test at motor still cold, about 20~25% more thrust than the specs said.

I like to hear from you.
 

Revy

K, letsgo!!
597 oz of torque on 2S! Nice! That all metal case is slick. Decent price too.;)

Dependability and durability are probably everyone's top concern.
 

BRUTUS

Plank Junky
Lifetime Supporter
Price and finish are good- but reliability, centering, and life span are all concerns. Tell you what- send me TEN servo's and I will torture test them and leave a nice review. But if one fails and crash's my plane:leaving:
 

Tired Old Man

Staff member
Back to the servo question.

What we want is a servo with voltage capabilities that runs from 6 to 8.4v without letting the smoke out.

The case must be rigid and not permit the gear pins to twist out. Torque needs to achieve between 400 and 450 oz. in.

Metal gears, preferably low wear.

Excellent dead band centering.

Superior resolution.

60 degree speed of .04sec or less.

Water tight.

18 inch servo power wires.

200 hour anticipated life cycle.

Must use output gear spline that fits current servos on the market. JR, Futaba, Airtronics, Hitec.

The case must fit in current standard servo size openings.

The selling price has to be more in line with actual production costs. Cost to produce is currently less than 10.00 U.S.D. Typical 5 times production cost would make selling price 50.00 U.S.D., or less.

Include data and specification sheet with print large enough to read without a magnifying glass.
 
Last edited:

Bunky f. knuckle

Cover shot, MA 10/09!!!
Great servo torque, excellent speed, multi voltage. They have to be ultra reliable and ultra dependable. The latter are absolute MUSTS!!! Standard servo splines, Futaba, JR, Hitec, etc........... Titanium gears, alloy case top and center.

Most of all, they have to be ButtFace approved!! :)
 

Buttface

You want me to do what...?
Back to the servo question.

What we want is a servo with voltage capabilities that runs from 6 to 8.4v without letting the smoke out.

The case must be rigid and not permit the gear pins to twist out. Torque needs to achieve between 400 and 450 oz. in.

Metal gears, preferably low wear.

Excellent dead band centering.

Superior resolution.

60 degree speed of .04sec or less.

Water tight.

18 inch servo power wires.

200 hour anticipated life cycle.

Must use output gear spline that fits current servos on the market. JR, Futaba, Airtronics, Hitec.

The case must fit in current standard servo size openings.

The selling price has to be more in line with actual production costs. Cost to produce is currently less than 10.00 U.S.D. Typical 5 times production cost would make selling price 50.00 U.S.D., or less.

Include data and specification sheet with print large enough to read without a magnifying glass.
I'll have what he's having. :cool:
 
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