Oxy Heli oxy3 - Chapter 14, Belt Tension & Adjustment

8 x TCEM2X8
M2x8 Hex cap screw
- Make sure the boom is assembled and installed correctly.
- Loosen up the tail boom by loosening the 8 M2x8 hex cap screws.
- Adjust the belt tension by pulling out the tail boom
- Tighten the 8 M2x8 hex cap screws.
- Belt must have good tension, to avoid tail function we suggest to
tension during assembly , and recheck after few fly. We suggest
to check belt tension pretty often, before each fly session.
- If belt often loose tension, need you check lock system or belt integrity.
- Test show that a Hard 3D pilot can perform over 400 fly before the belt
will fail, we recommend to replace Tail Belt after 300 fly, even if don’t
show wearing to avoid can broken in fly.
- Each time a crash upend, spend some time to check Belt integrity
and replace if any tooth are missing.
Belt Tension.
Belt Tension Note:
Rotate Main Gear as shown
In order to check belt installation, we
recommend to follow 2 simple steps:
1- Check with light, look inside the
boom form tail case and check if
belt don't have twist.
2- Rotate main gear per fly direction
(as shown) and check the tail hub
must rotate in the direction shown.
If Tail Rotor rotate in wrong direction,
back to previous page instruction
and assembly per need.
Tail Rotor Rotation Direction Check.
- Use Screw Driver to check
Belt Tension (suggested
max deflection is 1mm)
- Note :In any case we
recommends to made
heavy pre tensioning.
- Check again the belt
tension after the first 2 fly.
- With new Tail Belt once
moved slowly, is normal
to ear tooth sound engaged
with Main Pulley. This low
sound is normal and will
disappear after few fly and
the necessary "break-in".
Top View
Top View
Page 22
Belt Tension Check.
Chapter 14, Belt Tension & Adjustment