Are
 you there?     I am trying
 to extract logged data.

 what do they mean by venue?

   what do they mean by session?

   Do I have to answer all  these question?

   If I  extract a new file does that erase all the old files?

   Paul Lamar

   Paul, like
 I said before I am not a Motec expert but a session would
    probably be something like  morning practice 1. A venue would
be Road    Atlanta.

   You would add comments like adjusted base
 fuel pressure from  32.5 to   35 PSI.

   I don't think every  line has to be filled out.

   The old files are not erased unless you
 delete them. Even if you    extract them and
 send them to someone it keeps a copy. If you make a
    change to a file save it under a
 new name like 1b. You always want
   to be  able to go back to the previous map if it was better.


   Barry Bordes


   Thanks   Barry.

   When I try to
 load one I get a blank screen with out the engine
   having been run. Here is a screen  capture.

   Is there away  to get a list of the logged files in the M800?

   Paul Lamar


 Paul, if you
 look at your blank screen at the top select ..file, the
 drop-down  box should say
 something like ...file /open.   And a list of
 files from  previous  runs
 should show up. When you select one of them in a blank page
 will  then become filled with data.


 Barry  Bordes


 Thanks Barry I will try that.

 We ran out of inputs when we  put an exhaust manifold pressure sensor
 and  an EGT sensor so that logged data is going into the Motec
 dash device.

 The Motoc dash  device has far more memory than the Motec
 800 CPU.

 Motec  should have put a 64 Gig SD card in the $3000 M800 just
 like  the $60 Maximite I used to measure the
 compression pressures :-)

 Paul  Lamar


Paul,
This is a composite of what my pressure traces look like at 5000 rpm.
This is from a side-port intake and peripheral exhaust rotary.
I added the combustion trace for reference.
The system I use can record 50K/sec and the data becomes very dynamic....
the pressure peaks seem to slowly increase and there position
retreats about 80 degrees between 3000 and 8000 rpm.

Barry Bordes

I am not sure what I am looking at here but there appears to be something
seriously wrong with that engine. I suspect one or more apex seals are leaking.
Good engines are more consistent.

Take some pictures of where the pressure sensors are located.

Please load that first picture into MS Paint and label the lines.
Which one is intake and which one is exhaust?

What brand of data acq are you using?

The first two pictures are yours. The rest I took on a P-port.
The sensors were looking at the apex seal oil holes in the rotor
housing.

I just installed an exhaust pressure sensor on the TTC engine so if all goes
well I will have some data on that.

Paul Lamar

 The Rotary Engine free News Letter. Powered by Linux. If you want off
the list PLEASE let me know and I will remove  you.  ACRE NL web
site. http://www.rotaryeng.net You Tube http://tinyurl.com/beqqxas
Copyright 1998-2016 All world wide rights reserved.