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What's the current plan wrt the
EM-2? It almost sounded like you were planning to install
enough analog instruments to fly the plane. Was that temporary for
testing, or permanent to replace the EM-2, or perhaps permanent in addition
to the EM-2.
I was thinking of
running analog gauges as a crosscheck, at least for a while. I have analog
fuel pressure and MAP, and I find myself using these instead of reading the EM2.
They're much easier for a quick glance type of check. The EM2 can sit in the
background and yell at me (literally) if something gets out of range.
I know a lot of folks are waiting
anxiously for news on the modified turbo. What was the longest number of
hours you were able to run one of the stock turbos before they blew? I
would only figure this will include "hard running" at cruise. In other
words, have you got a figure in mind as far as when you will say the new turbo
has at least outlived the old ones?
I didn't really do
a lot of "hard running" on the stock turbos. The first turbo was starved of oil,
so I dont think that counts. It lasted about 10 minutes at high speed / high
altitude. The test that blew the second turbo was about 1.5 hrs, but I
think it was overspeed, not duration that did it. Now I know how, I'd bet I
could blow a good stock turbo in a few minutes, or keep it alive for ever.
:)
I'm taking it a little
easier on the new turbo for now. It feels like it needs more rpm to come into
its own. Right now it feels like a car going up a hill in top gear. After a
certain point you can press the gas all you want - it doesn't make any
difference. Once I get the engine running smooth and can establish good cruise
numbers with my pants on I'll probably get the prop cut back a bit. I don't
think it's a matter of the new turbo "outliving" the old ones in terms of time.
John
Hang in there.
Rusty
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