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Originally Posted by nucleus
Where are you getting this about the eccentric shaft failures? I think you are making this up. Find me three examples of eccentric shaft failures at less than 1500 HP.
Nucleus
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A client of mine in Florida, Ron Brothers, ran a drag RX7 there and had two let go in big ways. I'm sorry I no longer have the photo he sent. It snapped the rotor housing bolts, sheared all the gear teeth off and one broke the shaft. Another client in Orlando had multiple 13B failures including a shaft shearing just in front of the flywheel. These were both 700+hp engines running over 30 psi boost however.
As Bill said and I said, this is only in the realm of very high rpm, high power rotaries, not applicable to aircraft useage which will be close to stock hp and rpm. The point is, rotaries can and do break at extreme hp levels just like any other engine. In aircraft, most failures to date have been soft seal failures due to poor maintenance or FOD. The engines have continued to run but in several cases, altitude could not be maintained and forced landings were the result.
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