Section 3:
Assembling rudder and fin
Step 1.
Remove fin and rudder from protective plastic.
Step 2.
Find rudder pushrod set. Insert rod into base of
fin.
Step 3.
Secure rudder horn to fin belcrank. Use loctite.
Step 4.
Secure JR 8911 servo to servo mount by means
of 4 skrews. Make sure servo is mechanically
and electronically centred
Step 5.
Find rudder pushrods and secure to rudder horn
and servo horn. Make sure all angles are 90
degrees. No mechanical slop must be present.
Step 6.
Insert fin with carbon shafts into clamps. Fas
ten clamps. Make sure rudder belcrank moves
freely.
Step 7.
Trial fit rudder. Make sure rudder moves
freely. If happy with fit, glue hinges to rudder.
(make sure no glue comes in contact with hinge
pins and base of belcrank)
Step 8.
(NOTE: After glue has dried, checked move
ment of rudder for perfect operation)
Once the
turbine is installed it will be difficult to do any
adjustments to belcrank! Make sure of correct
operation.
This complete this section!
.
Items Required:
1. Fuselage
2. Fin & Rudder with hinges
3. JR DS8911 servo
4. Pushrod assembly
5. M5 bolt
6. Hobby knife w/#11 blade
7. Skrew driver
8. Metric Allen key set
9. Loctite
We use JR 8911 for rudder. It is
very important
that
no
slop
is present in rudder assembly. The rudder and fin is
very big. Any slop will be converted to flutter. Flutter
will destroy the fin and make the model uncontrollable.
Make sure to centre the servo before installation. JR
heavy duty horns are perfect for the job. Metal horns
may also be used for an even stronger fit.
NOTE : If you like the conventional method with servo
in fin and pushrods on outside, please modify by your-
self. For high speed and powerful turbines we recom-
mend pushrods on the outside.
P-13
