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Dave,
I was using Huxley seals sold by Dave Atkins.
The engine rebuilt by myself in Dec 2000, first flew in Feb 2001 and currently
has 150 hours on it.
I am using a 1991 turbo block (sans turbo) with EC2
and the 2.85 redrive from Tracy. Never too early to speculate - so long as
you are willing to change the speculation once data is presented
{:>)
Engine has been doing beautifully, so something I
did since the last flight is the cause. Those two things
were:
1. Changed type of spark plug from stock to
the B9EQV
2. Flew with a new Plastic plenum (third time
I have used a plastic plenum with no previous problems).
3. For the first ever flying to Florida - I
had a Tail wind - but doubtful that had much bearing on the situation
{:>)
Ed
----- Original Message -----
Sent: Saturday, April 09, 2005 8:43
PM
Subject: [FlyRotary] Re: No Joy on Sun
& Fun{:<(
This is premature on my part to speculate, but what Apex Seals
were you using? And did you rebuild that block yourself? Approximately how
many hours on the core/block in its present state of build?
If I
remember correctly you are using a normally aspirated 13B, with EC2 and RD-1
correct?
The other David,
David Staten
Ed Anderson
wrote:
Thanks, David
Yes, I still lean toward the spark plug theory - but, the delay and the fact
that it did not appear to happen to both rotor at the same time sorts of
leaves ??? about the theory. It does seem unlikely a few bits of plastic
would have taken out all 6 apex seals, but should be able to tell tomorrow
by peeking into the intake - if the dividers still in place then that would
pretty much eliminate that as a cause.
Well, this is the third time (charmed?) that I made the decision to divert
to an airport unintended - well unintended until it look like the best
choice given the situation {: ).
Just a bummer missing the gang at S & F
Ed
----- Original Message -----
From: "David Leonard" <wdleonard@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, April 09, 2005 7:02 PM
Subject: [FlyRotary] Re: No Joy on Sun & Fun{:<(
There you go again, trying the be the rotary engine glider expert. It
is such a shame that it interrupted the trip to SnF. I got invited to
go in a friends Lancair IV-P but am working all week.
It take a lot of confidence to go cross country after putting on a new
part of the intake system. Even I (fly to mexico with a broken
turbo), would hesitate to do that.
I find it hard to believe that a little plastic could break [at least]
4/6 apex seals. So the spark plug theory (of the two listed) is more
likely in my mind.
Other possibilities.. hmmm. All seem very unlikely: Other FOD,
detonation, loss of apex seal lubrication, lead deposits on the spark
plugs poking into the chamber, fuel contamination with grit or sand,
spark plugs actually broke and won't seal or are loose.
Glad to hear you are safe, bummer about the trip, interested to hear
the post mortum.
Dave Leonard
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