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Minimum CHT

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Richard Lamprey

Joined: 15 Jul 2011
Posts: 95
Location: Kenya

Posted: Sat Oct 04, 2014 2:40 am Post subject: Minimum CHT

This subject has come up before, but still no clear answer...  minimum CHT.  The other day, cruising at 9500' over the Great Rift Valley in Kenya, in Europa 5Y-LRY (Classic, Mono, 912 UL, 15 years old, 650 hours), the CHT was down at 55 C.  I have very efficient radiators made by Docking Engineering at Silverstone, but never saw the coolant at this low temp.  I use to blank off from time to time, but then in the hot desert areas it goes up a bit higher, eg 110 C, so I have to cater for all Kenya  conditions.  At 55 C it ran sweetly.  Rotax info tells me that the normal is 75 C to 110 C.  Is any damage done at lower temps?

Richard, 5y-LRY, Kenya.

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alanb(at)dpy01.co.uk
Guest

Posted: Sat Oct 04, 2014 3:06 am Post subject: Minimum CHT

I suggest that downloading the Rotax manual for your engine may be useful.



The only ref I can find to operating temperatures is a table referring to oil type and the temperature ratings for differing SAE, apart from the maximums obviously.



Perhaps it should be the Oil Temperature you should be considering.



As to any damage, not willing to speculate - sorry.



Alan

On 4 Oct 2014, at 11:40, Richard Lamprey <lamprey.richard(at)gmail.com> wrote:



 	  Quote: 	
		   

 

 This subject has come up before, but still no clear answer...  minimum CHT.  The other day, cruising at 9500' over the Great Rift Valley in Kenya, in Europa 5Y-LRY (Classic, Mono, 912 UL, 15 years old, 650 hours), the CHT was down at 55 C.  I have very efficient radiators made by Docking Engineering at Silverstone, but never saw the coolant at this low temp.  I use to blank off from time to time, but then in the hot desert areas it goes up a bit higher, eg 110 C, so I have to cater for all Kenya  conditions.  At 55 C it ran sweetly.  Rotax info tells me that the normal is 75 C to 110 C.  Is any damage done at lower temps?

 Richard, 5y-LRY, Kenya.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=431477#431477

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thomas(at)scherer.com
Guest

Posted: Sat Oct 04, 2014 3:23 am Post subject: Minimum CHT

Dear Richard,



thank you for renewinging this question. N81EU has now 1.ooo hrs on the 

Hobbs and with a modified cooling system. She has flown between the 

arctic and the Sahara with sometimes vy low Oil / CHT temps. I do not 

see any damage to the engine (e.g. compression), but will like to hear 

more input on this.



greetings from the other side of Africa



<Thomas, N81EU>



Am 10/4/2014 11:40 AM, schrieb Richard Lamprey:

 	  Quote: 	
		   



 This subject has come up before, but still no clear answer...  minimum CHT.  The other day, cruising at 9500' over the Great Rift Valley in Kenya, in Europa 5Y-LRY (Classic, Mono, 912 UL, 15 years old, 650 hours), the CHT was down at 55 C.  I have very efficient radiators made by Docking Engineering at Silverstone, but never saw the coolant at this low temp.  I use to blank off from time to time, but then in the hot desert areas it goes up a bit higher, eg 110 C, so I have to cater for all Kenya  conditions.  At 55 C it ran sweetly.  Rotax info tells me that the normal is 75 C to 110 C.  Is any damage done at lower temps?

 Richard, 5y-LRY, Kenya.

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gsessare(at)hotmail.com
Guest

Posted: Sat Oct 04, 2014 4:24 am Post subject: Minimum CHT

hi everybody,

 

i want to leave this e-mail list. how should i do?

 

regards

 

 	  Quote: 	
		   Date: Sat, 4 Oct 2014 12:21:43 +0100

 From: thomas(at)scherer.com

 To: europa-list(at)matronics.com

 Subject: Re: Minimum CHT

 

 --> Europa-List message posted by: Thomas Scherer <thomas(at)scherer.com>

 

 Dear Richard,

 

 thank you for renewinging this question. N81EU has now 1.ooo hrs on the 

 Hobbs and with a modified cooling system. She has flown between the 

 arctic and the Sahara with sometimes vy low Oil / CHT temps. I do not 

 see any damage to the engine (e.g. compression), but will like to hear 

 more input on this.

 

 greetings from the other side of Africa

 

 <Thomas, N81EU>

 

 Am 10/4/2014 11:40 AM, schrieb Richard Lamprey:

 > --> Europa-List message posted by: "Richard Lamprey" <lamprey.richard(at)gmail.com>

 >

 > This subject has come up before, but still no clear answer...  minimum CHT.  The other day, cruising at 9500' over the Great Rift Valley in Kenya, in Europa 5Y-LRY (Classic, Mono, 912 UL, 15 years old, 650 hours), the CHT was down at 55 C.  I have very efficient radiators made by Docking Engineering at Silverstone, but never saw the coolant at this low temp.  I use to blank off from time to time, but then in the hot desert areas it goes up a bit higher, eg 110 C, so I have to cater for all Kenya  conditions.  At 55 C it ran sweetly.  Rotax info tells me that the normal is 75 C to 110 C.  Is any damage done at lower temps?

 > Richard, 5y-LRY, Kenya.

 >

 >

 >

&gt===================
	


 	  Quote: 	
		   

 

 


	


 		 	   		  

  [quote][b]

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