DT-Skyline

Which os better for street racin? Torque or speed? Does it really matter?

psycho

You don't need a fet wire on your esc in order to use a 7.2V servo (like the 2123.) Just solder the blue wire from the servo to the + lead on your battery pack.

DT-Skyline

is that right? Which servo are u talkin about? The anolog or the digital?

Cole Trickle

Both. You can get both digital and analog with a 7,2 volt FET wire. The reason they're fast, is they are supplied with 7,2 volt, instead of the 6 or even only 5 volt from the BEC.

If your ESC only got a 5 volt BEC, I would definately get a servo with a FET wire.

If you get a KO servo with a FET wire, the servo comes with a little manual wich describes how to wire it up.

Choosing a servo on a limited budget, can be hard.

I think I would priority like this:

1: A brand with good reputation.
2: Speed.
3: Metal gears and double bearings. For precision and longer lasting.
4: Digital.

And step untill, I met the budget roof.

seaball

iTrader: (9)

yup, cole is spot on. notice #2 being speed, not torque. any of the high speed servos (excluding micros) will have plenty of torque to get the job done. go for speed baby. you can always scale the speed back with a good transmitter.

and like psycho said, it is nonsense to think that you need a high end esc to run a 7.2v fet servo. all you need is your 6 cell pack. there might be some kind of protection offered through the esc for shorts, or reverse polarity, but the servo will operate as intended straight from the pack.

psycho

I've had my 2123 for a while so I'm not sure if they still come this way, but mine has a small connector on the blue wire. I solder the wire to the + input post on my esc and the connector allows me to remove the servo without unsoldering the wire. Since I don't unsolder anything to remove the servo, the only way that I could wire it incorrectly is if I screw it up in the first place. I loop the blue wire around itself so it cannot disconnect on track in case of an impact. In electric racing, there are a few things that I would not skimp on and the steering servo is one of them.