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[funtimefrankie]

Can anyone give a run down on the micro/mini servos please.
Apart from being smaller, how do they differ from say standard Futaba,
what would be the equivalent of S3003.
When the ads say "5gram servo" is that the weight of the servo?

Looking to save a bit of space but not sacrifice power

Thanks
Frank


We had an attack of the 504's so I've removed your duplicate posts Frank   

ken
 

[Subculture]

No, 5 grams refers to the weight of the servo, which is usually given minus the weight of the servo lead and connector. Big deal you say, well yes it can be for super light aeroplanes where every gram counts, but not such an issue in boats.

Specs of servos are usuall weight, torque and speed.

The S3003 you mentioned has the following spec at 4.8 volts- Torque 44 oz-in (3.2 kg/cm), speed 0.23 sec/60°, weight1-5/16 oz (37 g).

To get an equivalent but smaller I would look primarily at the torque figure. To get 3.2kg will usuallly mean mini, not micro servo. e.g.

http://www.hobbyking.com/hobbyking/store/__3608__SSV_9315_Mabuchi_15_5g_3_2kg_15sec_Servo.html

However I doubt very much if you need even half that torque, something like this would probably do just as well-

http://www.hobbyking.com/hobbyking/store/__7472__Turnigy_1800A_Servo_8g_1_7kg_10sec.html

[boat captain]

Hi Frank

The 5 gram is the weight the pulling force exerted by the servo is measured in or kg cm .  I have just fitted 2 small servos in the crane on the Grab dredger I am building one has a 1.5 kg.cm rating the other3.5 kg.cm  Have a look on servo shops web site they are the servo specialists.

Joe

 

[Netleyned]

The torque or pulling power is expressed in grams or kilograms per centimetre
Weight of the servo is expressed in grams.

Ned