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Old 05-07-2013, 11:15 AM
riobison riobison is offline
Join Date: Jul 2011
Location: Oliver BC & Red Deer Alberta Canada
Posts: 315
Default What EGT/CHT combo?

As its intermittent at best, I'm going to change out my EGT/CHT combo gauge on my RV4 for another. There's Westach, Alcor, Belite, Electronics Int, Falcon, Insight, MGL, Micro and TL and who know's what else is available. Any recommendations on whose is accurate and reliable. Anything I should stay away from?
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Old 05-07-2013, 11:28 AM
Mike S's Avatar
Mike S Mike S is offline
Senior Curmudgeon
Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 14,088

Take a look at the EIS from GRT.

A lot more than just EGT/CHT.
Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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Old 05-07-2013, 01:16 PM
riobison riobison is offline
Join Date: Jul 2011
Location: Oliver BC & Red Deer Alberta Canada
Posts: 315

Hello Mike,
I'm just looking to do a simple gauge swap and not a panel upgrade. That might happen in the future but not now.
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Old 05-07-2013, 01:48 PM
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KatieB KatieB is offline
Join Date: Jun 2010
Location: Lawrence, KS
Posts: 1,047

Hi Tim,

Much of GRT's business is full glass panel displays, but the little EIS has been around for over 20 years as a stand-alone engine monitor that can measure everything imaginable for your engine and also some environmental stuff. You can learn more here:
Katie Bosman Krotje
Sold my RV-3B project...
But RV8 3301 is in the works.
Jabiru J200 almost done with restoration!
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Old 05-07-2013, 02:51 PM
BobTurner BobTurner is online now
Join Date: Dec 2011
Location: Livermore, CA
Posts: 5,093

Former aircraft (182) had an Insight GEM and we were very happy with it.

But, as the above posters are saying, the GEM is designed for the certified market and priced accordingly. For the same money you can get a unit designed for the E-AB market which does so much more. In fact for just a bit more money you can get a flat panel display which would display every engine instrument in your plane.
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Old 05-07-2013, 06:20 PM
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RV10inOz RV10inOz is offline
Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,086

Dynon EMS-D10.

Data logging and all sorts of things.

Just make sure you are not a dog watching TV, which is actually the vast majority of pilots. They do not understand the message the numbers are telling them.

David Brown

The two best investments you can make, by any financial test, an EMS and APS!
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Old 05-07-2013, 07:32 PM
riobison riobison is offline
Join Date: Jul 2011
Location: Oliver BC & Red Deer Alberta Canada
Posts: 315

I have to agree that for a little bit more money that I would have a way better system.

However, to do the install on this means cutting up and modifying the panel on the RV 4 and I'm thinking a lot of work. More than a weekend and probably a couple of weeks at least.

We don't have that much good weather here in Western Canada and right now we are coming into the prime flying weather and I don't wish to have the plane down right now. This would be a winter project for sure and going with GRT, Dynon or one of the others is certainly in the back of my mind but for later on.


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Old 05-07-2013, 08:49 PM
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rzbill rzbill is offline
Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,512

Originally Posted by RV10inOz View Post
Just make sure you are not a dog watching TV
C'mon David! We're learning!


Took a pic the other day simply because of the close CHT spread. 5 degrees.
Happy motor.

Sorry for the thread drift.
Bill Pendergrass
RV-7A: Flying since April 15, 2012. 710hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'
My RV Construction Page
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Old 05-07-2013, 11:41 PM
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Snowflake Snowflake is offline
Join Date: Oct 2009
Location: Victoria, BC, Canada
Posts: 3,119

If you're replacing a combo gauge that's in a standard 3" hole, I highly recommend the MGL TC-3 gauge.

I had a Westach 4-cyl EGT gauge, and wanted CHT as well. MGL had the only economical gauge that fit the hole I already had in the panel. After the positive experience with that gauge, I have since bought Fuel and Oil Temp/Press gauges too (in 2" versions).

For a quick, almost "drop-in" upgrade (I had to add CHT probes, so it wasn't completely trivial), I don't think it can be beat. Yes, for a little more money you could get an EMS-D10, or more involved glass that will tell you lots more about your airplane in a prettier instrument, but it does require a much bigger panel upgrade. I want to do the "big glass" upgrade at some point, but don't want to do it yet so this was a great compromise.
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)

Last edited by Snowflake : 05-07-2013 at 11:43 PM.
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Old 05-08-2013, 01:12 AM
riobison riobison is offline
Join Date: Jul 2011
Location: Oliver BC & Red Deer Alberta Canada
Posts: 315

My hole is a 2 1/4" but it looks like MGL has one to fit and I can add to it as needed. This might be worth looking at.
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