----- Original Message -----

From: Tracy Crook

To: Rotary motors in aircraft

Sent: Friday, September 12, 2003 2:13 PM

Subject: [FlyRotary] Re: EM2 Survey & Specs

 

The EM2 will be available in two different sizes but both have all the same other features.  The large format has a panel cutout width the same size as a standard radio stack  (6.2") with mounting flange out to 6.5".   Total heigth is 2.875"  with a cutout heigth of 2.5".

 

Just to blow Todd's theory, large for me :-)    

 

I already have a cutout for the last "final" size of 6.05 x 2.75.  To quote Laura's previous message- "Tracy says the cutout size IS certain."  Don't worry, I understand, and this will still work fine  :-)

 

Thanks,

Rusty

 

Indeed!  The exact cutout size is actually a matter of choice (as long as it isn't bigger than the EM2 panel!)  Your dimensions will work fine.  And it will allow the hansome RWS logo to show.   I like to mount these things from the back side for esthetic reasons and in that case anything from 4.25" x 2.25"  up to 6.75" x 2.75"  will work for the large format display

 

Forgot to include a list of functions for those who haven't seen them before.

 

 

The EM2 was designed to replace virtually *every* steam gauge on the panel but there are a lot of pilots out there that want their steam gauges but also want the limit & alarm features of a digital monitor and would install the EM2 to get them.   It has the ability to be field calibrated to most any sensor in use so it can be put in parallel with most existing installations without replacing anything.   I'm tired of squinting at my LCD engine monitor so the EM2 uses a VFD vacuum florescent display.  (see website for a picture (although the layout has changed from that pix).

 

1.  Coolant Temp

2.  Oil temp

3.  Engine RPM

4.  Coolant pressure

5.  Left fuel tank level

6.  Right fuel tank level

7.  OAT (outside air temp)

8.  Oil Pressure

9.  Fuel pressure

9.  Fuel Mixture

10.   Fuel flow (GPH)

11.  Fuel used since reset or gallons remaining

12.  HP output  (based on fuel flow & BSFC  or rpm & MAP using an engine index table)

13.  % of power  (based on HP  &  Engine rating)

14.  Manifold pressure

15.  Carb Temp (ice)  (for those who refuse to go FI)

16  Aux 1 air temp        (for experimenters measuring in/out rad temps, etc)

17  Aux 2 air temp

18  Aux 1 liquid temp

19  Aux 2 liquid temp

20  System Voltage (alternator)

21  Flight timer  ( oil pressure starts it)

22  Hobbs meter  ( "              enables it)

23  Hours since oil change

24  General purpose timer  (seconds & minutes)

 

25 - 28    4  Cylinder temps  (for Lycs or gen purpose temp measurements) 

29 - 32    4  EGT temps   (digital or bargraph)  Highest one always displayed in digital format)

33            Dynamic air pressure in " H2O  for testing.

 

Programmable High & Low limits on all engine functions.  Alarm light or audible alarm feed to audio panel.

 

In addition to the OAT mentioned above, the following air data is also displayed.

 

1.  TAS true airspeed (corrected for temperature & altitude)

2.   Altitude (up to 32,000 ft)

3.   VSI  vertical speed

 

The EM2 also functions as a visual interface for the EC2 engine controller.  Shows the MAP table in bargraph form and allows you to edit it.   Makes "holes" in the table very obvious and easy to correct.    For data logging, engine parameters will be output via serial interface.

 

Price not set yet but will be introduced at under $1000 & will include basic engine sensors.

Did I forget anything? 

 

Tracy