Attached are links to video, stills and pilot testimonial to a piston racing engine installed in Relentless NXT hand grenading from loss of engine oil pressure. Prop to flat pitch, engine seized due to oil loss, prop hub and blades snapped off and the sound was impressive. Pilot then made a deadstick safely, and CFR hosed down the engine cavity.

http://www.kevineldredge.com/Network_Solutions_Hosting/Reno_2010/Entries/2010/9/15_Relentless_NXT_Glides_to_smooth_landing.....html

http://www.backcountrypilot.org/forum/viewtopic.php?f=16&t=6117 has photos of the remains of the engine...

http://www.youtube.com/watch?v=lkRbsHWa6Hk&feature=related  video with slo mo...


Sounds like an aluminum AN fitting snapped off on the oil hose to PSRU..

Dave