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Message
Rusty, sounds like you are talking about the
Areocharger. If so, then you need to know that they were optimized for
producing high boost at low engine rpms and for use on smaller
engines. I talked to them about a two years ago, because I read about the
areocharger in Corky Bell's Maximum Boost book and when I
realized it needed neither oil nor coolant lines, it sounded idea for an
aircraft installation.
They did not even want to talk about one on a
rotary engine (I never mentioned aircraft of course). The told me they
didn't think it would survive the temperatures - but that might have been a
factor of the type metal they used in the turbine and of course things could
have changed since two years ago. Just wanted to mention it. It
would sure be great if it worked for aircraft use.
Another thing that would concern me a bit is that
it has a container of turbine oil that lubricates the shaft via a "wick" (what
ever that really means), so there is a limited amount of turbine oil. I
have no idea how long it would last and what would happen if it got low (I think
I know {:>)).
But, if it is the areocharger, it has
internal vanes in the turbine housing that close down (focuses the exhaust gas
on the blades) to give tremendous boost at low rpms and then open up to reduce
the effect of the exhaust gas on the boost at higher rpms. The point is
that it is again a turbo designed to produce gobs of boost at lower rpms.
That would concern me at bit - even though the vanes would probably keep that
from being as bad as our stock turbo.
So keep us informed if you got down that
road.
Ed
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
Sent: Tuesday, July 06, 2004 2:18
PM
Subject: [FlyRotary] Re: Second stock
turbo bites the dust
This morning I managed to break Rusty's turbo. I had been cruising at 11,000 ft with
MAP 38, rpm 5100 and 175 kts TAS (about 155 IAS) for almost 2 hours when rpm
suddenly dropped to 2500.
Sorry to
hear that John, though I'm obviously not surprised. I'm real impressed
with that slick bird though! Glad to hear you and the plane made it back
safely.
Have you
considered a supercharger? I wasn't going to say anything about this
unless I did it, but my rev-4 option (in the unlikely event it's needed)
is one of these: http://www.procharger.com/superchargers.shtml
Considering your current situation, I figured I'd go ahead and throw this out
for debate.
The current
smallest unit is 7" diameter, 6" long, and about 15 lbs. They also have
a new unit coming out any day that's smaller, and still capable
of supporting 300+ HP. They're marketing it for
Harley's. These units are self contained, so there are no
water or oil lines to hook up.
There are some
definite advantages, and disadvantages to consider, but it's something
else to think about.
Rusty (making all the power I need with RPM's I
hope)
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