EGT CHT readings false on #1 cylinder

[SkippyDiesel]

I do have the proper crimpers but the problems I have seen (just a few) is with the sliding connection and not the crimp portion.
I can unhook and reslide the connection and the issue goes away for a while- sometimes to return.

You have covered the first requirement - proper crimping tool.
What of the second - quality connecters?
Good quality connectors will have a tight fit, when pressing together and require some effort to disconnect. Repeated connect/disconnect and poor quality connectors, will tend to be looser . The easiest/quickest fix is a CAREFUL squeeze, with pliers, the female connector - I usually go for the side squeeze first. This has the effect of slightly curling the fitting, improving the clamping pressure & reducing the internal width very slightly.

 

[jakej]

You have covered the first requirement - proper crimping tool.
What of the second - quality connecters?
Good quality connectors will have a tight fit, when pressing together and require some effort to disconnect. Repeated connect/disconnect and poor quality connectors, will tend to be looser . The easiest/quickest fix is a CAREFUL squeeze, with pliers, the female connector - I usually go for the side squeeze first. This has the effect of slightly curling the fitting, improving the clamping pressure & reducing the internal width very slightly.

View attachment 6590

That's NOT them & 'blue' is usually for ~18-16 awg ? Thermocouple wiring that Dynon uses are in the 22-24awg ? range & need the 'red' ones to give a better outcome.
Ps - I never have never used the supplied ones until just recently on a local RV- the 'new' Dynon spades are better than previously supplied, we'll see (1 aircraft so far).

 

[SkippyDiesel]

"That's NOT them ......."

Hi Jake,

Did I really have to say "for illustration purposes only"?

 

[jakej]

I know some call us 'coneheads' but a 'mind reader' ?? NO.

 

[swatson999]

Or you could use connectors that are *designed* for thermocouples:

Cable Clamp Miniature Thermocouple Connectors | Omega

Miniature flat 2-pin TC Connectors with an integrated cable clamp design for built-in wire strain relief for quick connection. Click here for details.

www.dwyeromega.com

 

[jakej]

They’ll work for sure however more $$$ and you have to cut off the connectors on the supplied probes = a lot more work too. I usually go for cost & labour effective solutions

 

[swatson999]

Of the three legs of the stool (faster, better, cheaper), I put better above the other other two.

 

[jakej]

Sure, stay with your stool - I'm moving on to the the next job

 

[Rhino]

Or you could use connectors that are *designed* for thermocouples:

Cable Clamp Miniature Thermocouple Connectors | Omega

Miniature flat 2-pin TC Connectors with an integrated cable clamp design for built-in wire strain relief for quick connection. Click here for details.

www.dwyeromega.com

Just curious. Is there any way to safety wire those screws? Lots of vibration where they're going.

 

[SkippyDiesel]

Just curious. Is there any way to safety wire those screws? Lots of vibration where they're going.

I guess a drop of loctite may alleviate this concern .

I like the look of the SMPW-CC connectors. They look like they can be screwed down/together, through the circular hole. If so this would add considerably to their security.