Cruise at wide open throttle above 8000 feet sounds like alot of things are
wrong! Wait a minute maybe a fixed pitched prop could do that. I'm not use to
that. One of the best advantages to using a rotary engine would be a variable
pitch prop. Skip

Same for a constant speed prop! WOT 70% power at 8,000 feet roughly.
Manifold pressure down around 22 inches of Hg.
The RPM can be set on almost whatever.

The RPM will also be down I think for a fixed pitch prop
although I don't fly those very often.

Tracy, Ed, Finn, Chuck, Ken, Perry  what are you seeing at 8K WOT?

Paul Lamar

Leaned properly, I'm not seeing much more than 10 GPH (120 HP) above 6000'. RPM
maybe 5800 or 5900 at WOT. Don't like running at those high RPM as the re-drive
seems to pump oil past the oil seal anywhere above 5300 RPM, or so.
I really should take note of all those numbers. Alas, I'm no Tracy.
Better yet, I need to add a data port to my engine monitor. Anybody know of a
simple 16 pin DIL USART that'll interface with a 8035 processor? The 16550, 8250,
etc. all seem to be 28 or 40 pins.

Also, how would I get my iPaq Pocket PC to run both Anywhere Map and log data from
my engine monitor at the same time?

Finn

Install Linux on it :-)> Good luck on that Finn. You need a PCMCI card with
both a GPS and an RS232 port. BTW are PCMCI cards even available with
RS232 or any other type of serial port for that matter?
Perhaps you can get a PCMCI card with a bidi printer parallel port.
Then you will have to write a driver for gathering the data which
is very very difficult to do in windows. 

The easiest thing to do is get an old 386SX mother board at a swap meet.
Get a power supply that runs off 12 volts and an old 3.5 inch floppy drive.
Use those parts to make a data acquisition computer for the baggage compartment.
Boot DOS 5.0 off the floppy and I will write a data acquisition software program for you
in compiled QB in about five minutes that will store the data directly on the floppy 
boot disk. When it is full the data acquisition will stop. Remove the floppy 
from the drive after you land and copy the data to any PC.

The reason this is so easy is DOS allows direct hardware access to the ports
in real time while Windows and Linux do not.

If you want to do this I will donate the 386SX mother board, the floppy drive 
and loan you the 12 to +/- 5 volt DC converter power supply. You handle the 
data acquisition plug in card for the ISA bus and the sensors and wiring.

I got scads of this old stuff lying around almost too expensive to ship
to Florida for what you can buy it locally for. For use as data acquisition 
equipment it is both ideal and a steal.

The lower half of this picture is all you need. You don't need the CRT.
You might need a cheap keyboard however as some bios's won't boot unless
they see a keyboard.

The Nov 2001 issue of Nuts & Volts has an article on how to do this
on page 73 complete with source code on the software driver for a RS232 
serial port.

1 800 783 4624     http://www.nutsvolts.com

I did this back in 1989. Greg Richter and I both published articles in
KitPlanes mag about the same time on how to use PC's for data acquisition
and moving maps.

Paul Lamar
 
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