ORIGINAL: Taurus Flyer
Jag ser gyre på bilden. Vet du Telepilot gyro rodermekanism?
Gyrot var ett sinnrikt sätt att manövrera ett roder eller rättare sagt sidoroder. Denna rodermekanism bestod av en elmotor arbetande på 3 volt spänning med en liten mekanism som bestod av en slunga som kastade ut vikter, ju högre hastighet ju längre ut kastades dessa vikter ut. I s(l)utändan gav då motor full fart roder åt ett håll och ej aktiv motor roder år andra hållet, detta andra hållet åstadkoms genom att ett gummiband eller en liten dragfjäder utgjorde kraften.
Flygning rakt fram sker genom att gyrot pulsa’s ut att stå och pendla i mittläge.
Min fråga är, har din sändare en generatorn för sändarpulsen för mittläge?
Yes it is a "GYRON" rudder mechanism that is based on a rotating "rotor" - a centrifugalregulator that use the centrifugal force to get the rod to move in/out that is connected to the rudder. I believe that Telecontrol company that made Telepilot radios here in Sweden was alone with that version of rudder mechanism at that time. Principle is according to images below.
It is as You write a rubber band that controlled the motion in the oposite direction (to the left).
It was decided that when signal was on (pulse) the GYRON started to rotate (faster) and the linkage was pulled resulting in rudder deflection to the right (seen from behind). When no signal (no pulse) the GYRON motor slowed and the rod did not pull and instead the rubber band pulled the rudder to the left.
Telepilot had several generations of GYRON, I know of at least 4 versions - two early "open" GYRON and two later fully "enclosed" in a tube and one of them was a Super-GYRON with better electric motor and lower current consumtion.
The pull force of the earlier GYRON was about 500 gram (I do not know the pull force on the later versions).
See images below of various Telepilot GYRON.
I have a new in box Super-GYRON and also the instructions for it that. I have translated to english for You so You can read how Telepilot intended them to be used, see below.
My transmitter has to the best of my knowledge no pulse for neutral position, You have to pulse it continuously in correct way to get neutral position on the rudder.
My Telepilot is one of the earlier versions (about 1957-1958). Telepilot started to make own radios about 1955 and produced first single channel radios (to about 1969).
In middle of 1960th or so they started to produce reed radios also, called Transmutone (see image below) that was a 10 ch reed. In end of 1960th they started to produce proportinal radios that the called Digiplex (see images below) and continued to 1973 when production of radio control units for planes etc ceased (but they continued to produce radio controls for other industrial commercial purposes).
User manual for "GYRON" servo mechanism ( about 1959 -> )
If You follow the instructions below You will get most out of the
"GYRON" and You will find that
GYRON is 100% reliable
GYRON offer greater advantages then any previous mechanism
General about GYRON mounting and usage
GYRON must be mounted with a slight side angle to prevent bending
tendency that occur via pull linkage to the rudder horn. The horns that
is shipped with the unit should be mounted so that a standing still
GYRON gives left rudder.
For the pull linkage use piano wire 1,25 mm. The suppled brass rings are
mounted on the linkrod and soldered there so as the rubber tube linkage is
achieved at the GYRON and at the rudderhorn (30-50 mm from rudder horn
and outside the fuselage). Om boats it is enough with one such rubber
tube linkage. For the pull linkage attachment to the rudder horn a
safetyconnection must be in use. Use a rubberband for a pull force
on the left side of the rudder horn. Rubber band should be as long as
possible and it must be easy to adjust the tension. Approximately right
tension is when right and left deflection is with same speed of motion.
Let and right deflections should be blocked to the suitable deflection
angles for each model. A piano wire (0.75 mm) that is soldered on each
rudderhorn and pointed forward against the fin where the wire is bent
to give suitable deflection angle is an easy solution on the rudder
For a GYRON to work good it is neccessary with soft
mounting, GYRON must be placed on a soft foam rubber material (10-20 mm
thick). Both the soft foam rubber and the GYRON must be bonded with
PLIBOND - a new revolotionary glue - that guarentee a firm but at the
same time soft attachment of both Standard-GYRON and Super-GYRON. (One
tube PLIBOND cost 1:75 SEK).
Apply glue 2 times both on the soft foam rubber and GYRON with PLIBOND
before assembly is made (follow instructions for the glue).
A glue string of 8 mm width applied under the external tube on GYRON
is enough for enough strength.
On boats a balanced rudder must always be used. Maximum rudder
deflection on a boat is approx 22 degrees. If not enough stearing is
achieved with that the rudder area must be increased.
Use small defelections to start with!
Check that left deflection is not exeeding 2-4 degrees. Too large
deflections on first flight (before more experience is achieved) will
easy result in a crash. Therefore make the first flight with the left
rudder deflection very small and then You will be successful from the
After a while the deflection can be increased for steeper turns but
still with secure starts. Adjustment is made on the rubber tube outside
the fuselage. After some practice You will find how easy and secure You
will fly with a GYRON in the model.
Some advice with pulsing for proportional control with GYRON:
Check how deep the transmitting button must be pushed to give good
contact. It is easier to get the right pulse rythm if the thumb motion
is minimum. Check the rudder from behind when pulsing with the button
and exercise a rythm of equal signals and pauses. Pulse rythm does not
need to be fast! The rudder (with the rubber band properly adjusted)
should have a similar swinging motion around neutral position.
If signal lenght is inreased or decreased the rudder will be more to the
right or to the left. After practice and with a pulse of about 1-2
pulses per second a very good proportional stearing can be achieved.
Use of a pulsebox outside the transmitter is not needed.
To get most out of a Super-GYRON as rudder mechanism it is important
that following is used at mounting and pulsating:
Pull linkage rod is placed in inner hole at rudder horn (so short
moment arm is achieved). That way a faster deflection is achieved by
shorter movement of the arm in the GYRON. Pulsation of Super-GYRON must
be made in very slow pace. For maximum deflection to the RIGHT a long
signal must NOT be used but instead long signals with short pauses.
For maximum LEFT deflection the signal must not cease completely but
instead the GYRON motor should be held in slow rotation but without
rudder deflection is achieved.
Diameter 30 mm, lenght 70 mm
Weight: 60 gram
Voltage: 1,5-4,5 volt
Current: Approx 150 mAh
Diameter 30 mm, lenght 100 mm
Weight: 110 gram
Voltage: 3-6 volt
Current: Approx 50 mAh (due to more effiecient Distler motor)
Manufacturer: Engineering company TELECONTROL, Insjön, Sweden