Hey Russ- He thought it had partial wood but not all wood. As said I have been going back and forth on my new prop. Still confident in the 86" 3 blade MAC after talking with a lot of people. With the bigger engine and Wing X addition, I am feeling pretty good about my decision....I think...
The MT prop is *not* all wood. It is wood core that is covered with composite, glass, carbon and with a stainless steel leading edge. The composite overlay provides strength that allows the blades to have a thinner cord and more effecient airfoil than an all wood prop. While the wood core imparts the best of what wood props deliver - - that would be smooth operation, as the prop better absorbs the engine's power pulses, unlimited fatigue life (we're talking just about the wood part, which doesn't fatigue) and lighter weight.
There are other advantages too, one already noted is that in case of a prop strike there's less likelyhood of engine damage. Another is that a prop ding doesn't mean having to file away metal to get rid of a stress riser - some epoxy filler and touch up paint will do. Hartzell has a history of condemming their hubs, MT doesn't. In side-by-side tests on the Husky, the 205cm MT provides a better climb than an 80" Hartzell and slightly faster speed (walk away) for the same power settings. The MT is amazingly effecient when turning slow (1800 to 2000 rpm*), delivering 105 knots burning just under 6 gph at 21" mp and 1900 rpm on my Husky with 26" rubber.
*There are no "avoid continuous operation at" yellow arc rpm restrictions with the MT.