M3Armand

I'm comparing some servos and the units are different.

Can someone tell me which is "faster"?

A) Speed: 0.06sec/cm
b) Speed: 0.1 sec/60 degrees at 7.2Volts

I don't understand why "A" is .06 sec per centimeter. I.e. - from what standpoint do they measure the centimeter?

Or better yet, can people tell me which is the "best" servo (in your opinion) is for touring cars?

locked

iTrader: (1)

I haven't seen them rated by time/cm before. Weird.

If you were looking at a particular servo that only listed it that way in the specs, see if you can find the same servo on http://www.servodatabase.com/

It might help you to answer this question.

M3Armand

A = Hot Bodies #67991 HB DSJ-1SS Digital Servo (High Speed Type)
Speed: 0.06sec/cm
Torque: 13kg/cm
Steel and Aluminum hybrid gear construction
40.5mm*40mm*21mm

B = My old KO PS-703 FET
41 x 35 x 21 mm
1.73 oz = 49 grams
5.3kg/cm = 73.6 oz-in torque (7.2V)
0.1 sec/60 degrees (7.2V)

wingracer

iTrader: (24)

I suspect that might be a typo. You sometimes see torque rated as newtons/cm or kg/cm but not speed.

Did some digging and apparently it isn't a typo. I have no idea how they get that measurement as the motion ratio of the arm would affect the distance traveled. So I have no idea how it would convert either.

Dave H

It’s a typo I suspect, and not the only one. /cm doesn’t even make sense for torque. Should be kg-cm (force times distance). Even the KO example only has it right for the English units (oz-in).