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Date: Fri, 9 Feb 2007 20:04:08 -0700
From: Bob White <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] sensors
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Hi Joe,

Are you using the EM2?  If so, you can add VDO sensors similar to the
ones Tracy supplies. I get mine form eGuages.  http://www.egauges.com
There might need to be some machining done to mount them.  I think they
all use 1/8 NPT threads, not compatible with any hole on the Rotary
engine.  I tapped a hole in one of my AN fittings for the water temp
sensor.  Other instruments might vary on their requirements.

For the EGT sensors, the Micro-1000 probes seem to be a good value.
Since these are just type K thermocouples, they should work with any
system.
http://www.aircraftspruce.com/catalog/inpages/micro1pyroprobes.php

For RHT (Rotor Head Temp) I don't think the typical spark plug CHT
probe will fit in the recessed spark plug hole on the rotary.  My
rotors have a threaded blind hole near the spark plug that I believe
was made for a knock sensor.  That could be adapted for a temp
measurement but I wouldn't know what temps to expect there so haven't
tried to measure it.

The EM2 can be calibrated for use with just about any sensor.  I didn't
get an oil pressure sensor with my engine.  Do they use one, or just an
idiot light.  I did connect the oil level sensor in the pan to an LED
on the panel.  I sort of assume that if it ever comes on I will need to
replace the engine.  :-)

Bob W.


On Fri, 9 Feb 2007 17:55:01 -0500
"Joe Berki" <jskmberki@alltel.net> wrote:

> Has anyone come up with a standard list of sensors for the rotary?  Do we use an oil pressure sensor from the RX7? What year?  Water temp?  What about EGT?  Do you measure temp at the sparkplug washer?  Thanks for any help
> 
> Joe Berki
> Limo EZ


-- 
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
First Flight:  11/23/2006 7:50AM - 2.4 Hours Total Time
Cables for your rotary installation - http://www.roblinphoto.com/shop/