If you want EXELLENT servos, check out

www.multiplex-rc.de  These servos are THE best.  This German company make
servos for Target drones as well as R/C hobbies.  The MC range have a
microchip on board giving infinate holding power.

If you power up one of these servos, you WILL NOT move the output arm with
your hands. (I know 'cos I bet anyone who can move any of them on my R/C
heli can have the heli - It is now 4 years old)

Price is around #50 against #100 for JR super servos.

Aaron

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Alan King
Sent: 25 January 2000 19:26
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: RC servo accuracy...


  The error will be pretty much the same regardless of repetitions till you
do some
serious wear to the servo, and some of these specs probably do give an
'absolute
accuracy' spec.
  If you want some good first hand knowledge though, get on the SRS mailing
list.
Nothing punishes a servo like a robot, so they can tell you which ones in
which
price ranges hold up the best with best accuracy etc.  If you truly need
precision
the JR super servos will probably win out, they have less dead band and are
more
active around the dead band.  May be something better by now though, I
haven't kept
up on that front lately.  RC Heli links may be better for that, a good
competitive
flyer can tell not only which start out best, but even about how many hours
are on a
servo by how much extra slop it has.
  What are you going to do with the motion?  In most cases there are better
positioning methods, and even if a servo is the best answer, modifying the
servo
will often give much better results.  (And is pretty easy to do..)

John Walker wrote:

> manufacturers specs but have been unsuccessful so far. I can run the test
> myself but I doubt the results will hold for all the types of servos
> available. I want the information in order to determine which servo to
purchase.