beyond 24 ft/lb can crush the wood which results in a warped surface
and consequently an out of track propeller. This surface is also the
reference plane for the blade positions, so if it is damaged it is
difficult to reestablish.
applicable torque is limited by the compressive strength of the
wood, no more than 3/8 inch diameter bolts are necessary.
Smaller bolts have several advantages, as they are lighter and
most of all they stretch more for a given tension, thus adjust
better when the wood moves a little due to moisture and temperature
propellers made at LSE are far more tolerant to rocks, rain and
other foreign objects you may inadvertently send through it than any
un-reinforced wood propellers. To ensure safe operation and minimum
wear, LSE highly recommends the use of some sort of fender on all
wheels used in front of your propeller. Static run ups
should also be avoided.
Rain can also
damage the leading edge. However, if you reduce RPM to
below 2400, even heavy rain will cause only minor erosion.
propellers are sealed with epoxy throughout; however you
may want to apply a wood sealer if you remove the prop after use.
propeller need refinishing, you can try to fill minor chips yourself
with gel coat. LSE refinishes propellers with a precise
procedure that includes removal of the existing gel coat,
re-spraying, sanding to contour, sealing the hub, and balancing.
With proper care
your propeller should give many years and several thousand hours of