Compass Atom 7HV Ultimate - Manual (Page 13)

Use blue threadlock on all
screws going into metal parts.
Adjusting the belt tensioner is pretty easy. Just
remove the rubber ring and adjust the tension as
usual. After remounting the band, the tensioner
should swing in 1/3 of his possible travel– if it
swings more in then the tension is to lose.
Increase it by removing the band again and move
the tail boom further to the rear. Use the four
screws in the tail boom mount to fix the boom.
Check the belt tension sometimes.
Readjustments may be needed after a while or
big temperature differences.
swing range
Tip : Fix the tail boom clamp later, so you
can adjust the angle for a perfect smooth
running tail control.
Adjust the belt idler pulley with a distance of
0.2-0.3mm to the tightened belt. Do not over
tighten the screw as it may result in a bent tail
case and sluggish bearings.
Tip : Check the rubber from time to time
for cracks and refractory material.
Tip : If the rubber gets older,
you can increase the tension
by opening the two screws in
the holder and sliding it to the
rear in the long holes.