Propeller Setup - Pipistrel Sinus Build Manual

Propeller setup

First fit the hub, spacer and spinner to a balancing stand and check for balance. If the

hub begins rotating by itself pull it off and rotate the backing plate or the spacer and try
again. Keep repeating until the prop stops rotating.
Mark the position of all three units with a marker pen; the propeller hub, the spacer and

the backing plate.
Pull the hub apart and check if the pushrods fit properly. They must move freely, the

longer one must have a little freeplay to ensure smooth operation.
Check the levers on the end of the blades for free movement. These levers adjust the

blade angles. Fit the bolt through the two blades and through the center. Be sure to fit
the brass washers in place and apply Loctite 243 to the nuts. Do not overtighten! Check
for free movement of the blades.
Check the clearance on the end of the bolt. If it is too close, cover the prop and file it

down. Make sure there is at least 1mm clearance.
Put on the top half of the hub being sure to align to the marks on the hub.

http://www.pipistrel.si
K i t M a n u a l f o r P i p i s t r e l S i n u s a n d V i r u s A i r c r a f t
© Pipistrel Release March 2009 © Page 191 of 267