: --------------=20 Second set of photos=20 Photo Apex Scrapes shows that the ejected apex seal piece probably = made it around the chamber a couple of times, one impression looks to be = smaller than the width of the ejected piece - so perhaps it broke up = further in its round. Photo Apex Slot Peened shows that the 2nd apex seal of #1 rotor that = would not move up and down - clear why, now. The departing piece peened = over the slot and froze the seal in its slot. I had to pry the opposite = end of the seal up to the position you see. Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ------=_NextPart_000_002C_01C54004.41FFB0D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Kelly, I did get the rotor's used and = they appeared=20 in good shape. But, that could have simply been my lack of knowledge = what to=20 really look for such as - slop in the apex seal slot. I was = using the=20 rotor housings that came with the core as they appeared to be in good=20 shape. But even though I have not yet found any damage to the = rotor=20 housings, that one rotor clearly had a piece of apex seal jammed between = the=20 rotor housing inner surface and the rotor - hard to believe it damaged = the rotor=20 but not the housing. Need to do some cleaning of parts for better=20 assessment.

----- Original Message -----
From:=20 Kelly = Troyer
To: Rotary motors in = aircraft

Sent: Tuesday, April 12, 2005 = 11:35=20 PM

Subject: [FlyRotary] The Final? = story on=20 the engine problem

Ed,

Sure looks familar.......I spent the day = taking=20 a 89-91 core engine apart

to recover one good 9.7 to 1 rotor......Other rotor suffered apex = seal=20 failure

(stock 3 piece seals).......Rotor looks alot like = yours.......Rotor hsgs=20 are shot

.......End hsgs serviceable but should probably be = lapped.......It has=20 taken

two core engines to get two good 9.7 rotors.......Such is life = !!

--
Kelly Troyer
Dyke=20 Delta/13B/RD1C/EC2

--------------=20 Original message from "Ed Anderson" = <eanderson@carolina.rr.com>:=20 --------------

Second set of photos

Photo Apex Scrapes shows that the = ejected apex=20 seal piece probably made it around the chamber a couple of = times, one=20 impression looks to be smaller than the width of the ejected piece - = so=20 perhaps it broke up further in its round.

Photo Apex Slot Peened shows that = the 2nd apex=20 seal of #1 rotor that would not move up and down - clear why, = now. The=20 departing piece peened over the slot and froze the seal in its = slot. I=20 had to pry the opposite end of the seal up to the position you=20 see.

Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.com

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