Hi ya guys,Just received my Hi-torque servo from Hong Kong and fitted it to my AX10,power is awsome! But I have had to compromise the lock-to-lock on the steering[&o].I'm not that concerned with the transit time just really want to get a good lock on the car.It says in the spec it will stall 13Kg @ nearly 5V (459oz)thats good?(thats how I worked it out ,it maybe wrong)But when I used my Hi-Tec @80oz the steering was better?Why is this?


Operating Speed (4.8V no load) : 0.17sec / 60 degrees
Operating Speed (6.0V no load) : 0.13sec / 60 degrees
Stall Torque (4.8V) : (13kg/cm)
Stall Torque (6.0V) : (15kg/cm)
Temperature Range : -30 to +60 Degree C
Dead Band Width : 4ms
Operation Voltage : 3.5 - 8.4Volts
Dimension : 40.6mm*19.8mm*37.8mm
Weight : ~56g revolutionshop [X(]


Revolutionshop is the site where I ordered it from if you want to check it out.
Anyone of you crawlers help?
Regards
James.

Lower quality servo w/ inflated ratings maybe?

it's in the conversion (you are converting from kg/cm to oz/cm when you want oz/in)

The conversion from oz to kg is 35.27 oz/kg
the conversion from cm to in is 2.54cm/in

therefore, by my calcs, the servo should be doing ~180 oz/in

13kg * 35.27 oz/kg /2.54cm/in = 180 oz/in

It is probably overrated. What is your definition of "better steering"? speed? turning radius? torque?

Thanks for your replies.Joe,as for my definition of "better steering" I mean as in turning radius.It turns a full 180DEGS in a space of 262" that in my mind is pretty poor.Any ideas for a tighter turn would go down a treat.
I have put a few pics up of the lock-to-lock to give you an idea of the steering.
Regards
James.

Should have gone with a Hitec or Futaba. Chinese stuff may be cheaper, but in the long run it's not really worth it.

use a longer servo horn for more throw. or mess with your endpoints (if you have them) to turn sharper

Also, get a BEC set for 6V. it looks like you just may need more power to the servo.

Post a pic from the top with the body and front wheels off. I want to see what holes you are using for mounting the steering links

Think your right Modder in the end it doesn't pay to skimp on servo's! Joe,putting a couple of pic's up so you can see the set up.You are right about the holes in the hubs,should use the first ones not the second as for the servo horn there's no more clearance on the steering rod.
Thanks fellas
Regards
James.

you can get more throw (but loose steering torque) by moving the steering links to the hole closer to the axle on your ackerman arm (the lever on the knuckle)

Steering is a give/take situation, you can either have more throw or less torque.

there are good and bad products from china. where do you think hitec and other name brand servos are made? thats right, china! lol


if your pack is only 7.2v hitec makes a receiver eliminator harness thats like a buck. just a y harness that sources power right from the battery to your servo and it y's off to still get signal from the receiver. worked really well on my RC powerwheels project using the 805bb servo. but then again my powerwheels was 6 volts, 7.2 to a servo should be fine. but if you run a 3s lipo or big nimh pack you will need a bec to prolong servo life.