Servo query
 

Hello all,

My servo is some 20 years old and although it works well, I'm not sure if there are are real benefits to a more modern servo (eg digital).

Budget is ot much £15 quid really and ot sure what to look for. It will be used on an xray t2 touring car (which I am also awaiting spacers as the servo rubs against the drive belt on full steer)

Suggestions welcomed

for that money you won't get anything particularly fast or strong. Not new anyway. So it may be worth sticking with your old unit. I have a 20 year old KO servo that still works fine and has pretty good speed compared to modern ones, just not quite as torquey.

The bluebird servos are cheap and have a fairly decent spec for the money, but they are around £25+ new.

You could put a wanted add on here and see what offers come in for a second hand servo?

Any idea what kind of torque and speed is considered good? Not necessarily competition good, but better that sufficient

for a touring car the torque isn't that vital. anything above 5-6kg would be fine. It;s the speed that helps most, enabling you to react to slides etc and correct them before the car spins. You would ideally look for something around 0.1s/60 degrees, or faster. But on your budget you would probably have to settle for around 0.12-0.14s, which is still a damn site faster than the 0.25s+ that bog standard servos move.

Settled for a Bluebird BMS-621

0.1s / 60 degrees
7.2KG

£12.50 delivered

should do the job nicely.
is it a metal geared model? the metal geared ones are stronger in a crash. If you hit something fast with the plastic geared models they can sometimes strip the gears inside unless you have a servo saver fitted.
Spare gears are usually available though and not that expensive

Plastic gear but the car uses a servo saver.