[hharney]

Since installing the MT composite props 6 years ago (can't believe I have had them that long) I have notice a significant decrease in vibration related issues. Rear muffler is a good example, I normally figured at least every other annual to repair cracks. I have had none since the MT's. The composite material (primarily beechwood) absorbs the vibrations caused from those lovely Continental engines. With the aluminum blades this vibration is just amplified. Great article on composite props in the new Aviation Consumer. So my suggestion is to balance things to a more extreme measure as much as possible. During engine overhauls or prop overhauls balance is the key. I would have to think that for the P and Turbo models with more exhaust stuff it would be even more important. Bottom line, composite props should be a legitimate option if it comes up on your aircraft. You have to do both front and rear at the same time and that may be a show stopper for most to swallow.