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EGT Probes

 
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Troy Maynor



Joined: 10 Jan 2006
Posts: 162
PostPosted: Wed Aug 27, 2008 9:08 am    Post subject: EGT Probes Reply with quote
The Rotax manual specifies 2.75" from the flange to the mount point of the EGT probes. Is it a coincidence this centers right on the thick band part of the pipes where they are welded together or are these thicker parts for drilling and tapping? I have the kind that mount with clamps.
Troy Maynor

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rampil



Joined: 04 May 2007
Posts: 870
PostPosted: Wed Aug 27, 2008 10:23 am    Post subject: Re: EGT Probes Reply with quote
Troy,

My old and new exhausts both have uniform diameter and thickness
from the block flange to the ball joint. The only care was in siting
the weld-on bung so that the probe, sticking out 4 inches or so
do not obstruct access to the flange nuts or fitting the cowl back on.
In my new exhaust system, I have EGTs on all 4 cylinders.

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Ira N224XS
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wooburnaviation(at)google
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PostPosted: Thu Aug 28, 2008 12:33 am    Post subject: EGT Probes Reply with quote
Ira, Troy

I would like to fit a 4 probe EGT to my Europa (912 u/l). What system/display are you using please? Any comments on it's effectiveness appreciated.

Thanks

Dave
G-CCGW


On 27/08/2008, rampil <ira.rampil(at)gmail.com (ira.rampil(at)gmail.com)> wrote: [quote]--> Europa-List message posted by: "rampil" <ira.rampil(at)gmail.com (ira.rampil(at)gmail.com)>

Troy,

My old and new exhausts both have uniform diameter and thickness
from the block flange to the ball joint. The only care was in siting
the weld-on bung so that the probe, sticking out 4 inches or so
do not obstruct access to the flange nuts or fitting the cowl back on.
In my new exhaust system, I have EGTs on all 4 cylinders.

--------
Ira N224XS


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nwcmc(at)tiscali.co.uk
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PostPosted: Thu Aug 28, 2008 1:24 am    Post subject: EGT Probes Reply with quote
I have a 4 probe EGT system but didn’t want to pay for a complicated
engine monitoring display. I used a 4 position rotary switch in
conjunction with a uMonitor system. As the Rotax has no mixture control
the need to make adjustments based on EGT are not required. My main
reason for having 4 probes is to be able to instantly identify which
cylinder is giving a problem should the engine run rough for any reason
(eg rpm drop out of limits on a magneto check). This is easily achieved
with a switch and a single display.

Nigel Charles

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