Have you ever heard of different problems associated with long servo
extension wires? The problem is, as soon as you start extending those
wires, you are starting to lose signal strength to the servos, but you
don't see it right away until the wires get past a certain length. You
might not notice it right away, but it's an accident waiting to happen.
Despite views to the contrary, PCM radios do not eliminate interference,
but simply mask it. Just because you have a 12-inch extension and you
say it works fine, doesn't mean it is fine, says ROGER FORGUES
of Aerografixs.
Roger has come up with his own solution to these problems - Fibre
Optic Servo Control using fibre optic extension cables which
he has designed and developed. Using conventional extensions beyond a
certain length will mean you lose control over the servos, says Roger,
but with fiber optic cables, you will immediately regain control.
Depending on applications, you do not need to connect the servos to
the receiver. You simply connect a small battery to the receiver and a
larger battery to the servos. The only link from the receiver to the
servos is the fibre optic cable. If you need to connect 4 servos on,
let's say, the elevator - no problem. Still only 1 fibre optic from the
receiver, with 4 servos on the output of the fibre optic. For a large
IMAC aerobatics airplane, with rudder servos in the tail, you would
need 4 fibre optic servo extensions - 2 for ailerons, 1 for rudder and 1
for elevators. If you run the rudder servos in a push-pull fashion,
with the servos in the middle of the airplane close to the receiver,
then you would need a fibre optic extension for the rudder channel. The
extensions are custom tailored to the proper length and depend on whether you
use secondary battery for the servos.
The new generation servos which are now available are using infrared
driver units which has resulted in a much smaller unit than the earlier
version. Under test, the servos have proved extremely durable. The cost
is US$58 each plus shipping or US$55 for three or more, plus
shipping.
For more information, contact Roger Forgues direct. E-mail 927424@ican.net
or visit his website at http://www.aerografixs.com
Click on the post-box to e-mail me now!
This
handy little gadget caught my eye in the modelling press recently, so I
went to the 