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Message
Rusty, thanks for the photo of your hypothesis. That
coincides with the hot spot being a bit below the bottom of the corner seal
circuit. It may not prove it, but it certainly provides some additional
plausibility to the theory. I think it answers how hot spots got on both
sides. The side with the stuck apex piece would certainly at the narrowest
width of the housing could have caused a hot spot due to the friction. If
at the same time the tip of the rotor was displaced toward the opposite wall by
this piece then that edge of the rotor could have scraped that side housing -
perhaps a bit lighter accounting for the smaller hot spot.
I'll take a close look at the photos of my engine when I get
them and look to see if we have one that might show the lightening holes on the
front rotor to see if there is any indication of something stuck and perhaps
moving in one.
Lets see sloppy apex slots, implausible sticking of apex seal
in lightening hole, brake line break....., I think I stay on the ground with
"Honey Dos" for a while {:>)
Besides, Tracy says my EC2 is so out of date he is embarrassed
for me to fly with it, so I promised him I would send it back for an update
after this trip - that should keep me on the ground for a while.
Ed
----- Original Message -----
Sent: Friday, June 24, 2005 10:02
PM
Subject: [FlyRotary] Re: Engine Rebuild
corner seal.
No way I could prove it in any case. However, as Rusty
suggested if the seal piece were somehow trapped in one of the lightening
holes milled near the rotor tips, it might just have enough room to
rotate. The Hot spots were both near the (near the exhaust port on the
iron side housings. No evidence of any overheating, scraps or anything
on the rotor housing. The hot spots were in just a tad further toward
the center than the inner most part of the corner seals.
Hi
Ed,
Well,
from your description of the area, and the pics I'm attaching, I have to say I
think the theory is little more plausible. I still don't
understand how the dark spot would get on the other side
though.
Also,
if a seal was stuck here for some time, I see only one way for it to get
out. It's nearly impossible to take a good pic of the inside of the
intake port, but if you use your imagination, and take my word for it, you'll
note that the lightening hole lines up almost perfectly with the intake
port. I just can't imagine how much good luck you have if that seal
managed to pop out of the rotor and into the port cleanly (without getting
pinched on the edge, then got sucked back into the rotor housing, passed
through, and spit out without damaging anything else. Might not
even be possible unless it was worn down quite a bit. Still might
not be possible.
Better let
your angel rest some before you fly again :-)
Rusty (still thinking of trying a PP, just to
see how it works)
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