Aviasport egt

[BrendAn]

My egt wiring has 2 broken connectors.  These instruments work on millivolts so I think I have to buy new probes because it would be difficult to replace the ends.

Am I right or wrong.

[onetrack]

I have never seen just the ends available, they only come complete with wiring. They're more correctly called thermocouples, although they're often described as probes. Use "thermocouple" or "EGT probe" for search terms.

 

https://www.aircraftspruce.com.au/search/search.php

 

 

Edited 18 hours ago by onetrack

[Thruster88]

Aircraftspruce australia has them in stock if your manifold has the 8mm boss's welded in it.

 

I have never had much luck with egts lasting in the thruster. Correct jets and a fuel pressure gauge has worked for me over a very long time.

[BrendAn]

1 hour ago, onetrack said:

I have never seen just the ends available, they only come complete with wiring. They're more correctly called thermocouples, although they're often described as probes. Use "thermocouple" or "EGT probe" for search terms.

 

https://www.aircraftspruce.com.au/search/search.php

 

 

I know what they are o/t. Just wondered if anyone had replaced the ends on them.  I realise I will probably have to get new probes.

And yes aircraft spruce are the place to get them. Only 15 minutes from my flat.

[BrendAn]

2 minutes ago, Thruster88 said:

Aircraftspruce australia has them in stock if your manifold has the 8mm boss's welded in it.

 

I have never had much luck with egts lasting in the thruster. Correct jets and a fuel pressure gauge has worked for me over a very long time.

These were working but the wiring kept falling off the back of the gauge. Thought I would crimp them a bit but the ends broke. Very old and brittle.

[BrendAn]

1 hour ago, Thruster88 said:

Aircraftspruce australia has them in stock if your manifold has the 8mm boss's welded in it.

 

I have never had much luck with egts lasting in the thruster. Correct jets and a fuel pressure gauge has worked for me over a very long time.

I agree. I think the water temp gauge is more important. 

[facthunter]

EGT's are Important on a 2 stroke. Vibration Probably Makes these things brittle. I reckon you will need the whole lot.   Nev

[facthunter]

EGTs are VERY Important on Turbines also, or it's drip drip drip out the Back on start or a flung turbine wheel at other times. On 2 strokes IF you Know the Mixture stays where it should be you COULD dispense with it??  Nev

[BrendAn]

I think a well maintained 2 stroke.

As in clean fuel system and no air leaks. And not lugged is fine without egt gauge.

Never had them on outboards and  motorbikes.

[Blueadventures]

7 hours ago, BrendAn said:

My egt wiring has 2 broken connectors.  These instruments work on millivolts so I think I have to buy new probes because it would be difficult to replace the ends.

Am I right or wrong.

Send an email to them, 10 years ago Roberto assisted me with an issue, excellent product support.  Hope he / they are still there.  Cheers.

 

[facthunter]

 Outboards are watercooled and Motorbikes don't run Flat out for extended times Like Aircraft 2 strokes do and IF either stops it's not the BIG deal it is on an aeroplane. Nev

[BrendAn]

5 minutes ago, facthunter said:

 Outboards are watercooled and Motorbikes don't run Flat out for extended times Like Aircraft 2 strokes do and IF either stops it's not the BIG deal it is on an aeroplane. Nev

Rotax is water-cooled too. Outboards can work very hard for extended periods like an aircraft engine. What I am saying is a well maintained engine shouldn't have egt problems if set up correctly and not overloaded. I will be replacing my probes anyway.

 

[onetrack]

You have to remember that an EGT gauge is the only way to ensure you don't melt valves with extreme combustion temperatures - as well as being very useful in combination with a mixture adjustment, to set the most economical fuel burn.

CHT gauges and water temperature gauges react slowly to combustion changes, whereas an EGT gives you instant combustion temperature readings.

 

[facthunter]

The smaller ROTAX'S WERE'NT water cooled. Some had single carburettors and you CAN  have VARYING Mixtures in each cylinder. A leaking crankcase seal will LEAN the Mixture and Melt a hole in a Piston real fast.  Most flying people don't really LIKE 2 stroke Power and the BEST operators watch their engines Like HAWKS. Power to weight they are still GOOD. Nev

[BrendAn]

2 hours ago, facthunter said:

The smaller ROTAX'S WERE'NT water cooled. Some had single carburettors and you CAN  have VARYING Mixtures in each cylinder. A leaking crankcase seal will LEAN the Mixture and Melt a hole in a Piston real fast.  Most flying people don't really LIKE 2 stroke Power and the BEST operators watch their engines Like HAWKS. Power to weight they are still GOOD. Nev

I wrote a scathing reply to you and one-track but put it in the wrong thread. I can't be bothered writing it again.   I only wanted to know about fitting new ends on probe leads not get lectured .