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Was Nothing new then now propeller twist

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ptag.dev(at)tiscali.co.uk
Guest

Posted: Thu Sep 06, 2007 1:07 am Post subject: Was Nothing new then now propeller twist

Hi!Roger

No. Not that I could tell. Maximum 5 minutes and the coolant is too hot

to make a dash for it! I'm resigned to accept that at present, since

when flying it's fine. I get words of advice that after 10 to 50 hours

it runs cooler anyway.

I tried the half choke setting in flight yesterday and it made no

difference to coolant temps. I thought running richer would have had a

dramatic effect since the guys with a mixture facility can control their

burn really well.

Regards

Bob Harrison. G-PTAG 



--

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rparigor(at)suffolk.lib.n
Guest

Posted: Thu Sep 06, 2007 2:54 am Post subject: Was Nothing new then now propeller twist

Hi Bob



"I tried the half choke setting in flight"



I meant for you to try 1/2 to full choke on ground to try and cool things

down!



Actual it is not a choke but an enrichening circuit. It does nothing much

/ above idle to richen things up! Thus your inflight test is exact as I

would suspect.



Giveratry on ground and please report.



How does full course and 2500 (also try 3000 and 3500) RPM do (angled into

wind) to help cool?



Ron P.

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Gilles.Thesee(at)ac-greno
Guest

Posted: Thu Sep 06, 2007 9:36 am Post subject: Was Nothing new then now propeller twist

Thilo Kind a écrit :

 	  Quote: 	
		   



 Hi there,



 I'm flying a Zodiac 601 HDS with Rotax 912 with the water rad unerneath the cowling (original Rotax rad). Depending on the OAT the water temps start to climb to 220 F over a period of 10 minutes or so. During climb out I typically see 210 F. In cruise, the water temps drop to 140 F. CHT temperature on the other hand does stay pretty stable at around 100 F (it's a bit higher, since the sensor is not properly calibrated).


	


Can you give us more detail about your setup ?

Where and how do you measure water temp ? Radiator exit, radiator entry, 

etc...?

Witch of the two  CHT probes are  you  using,  front, rear ? 100 F is 

really not a working temperature for the the cylinder heads. You already 

read that in a hangar on a hot day...

Something must be wrong....



Best regards,

-- 

Gilles

http://contrails.free.fr

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Roger Lee

Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.

Posted: Thu Sep 06, 2007 1:52 pm Post subject: Re: Was Nothing new then now propeller twist

I agree that 100F sounds way off. It has to be higher than that if the engine is running especially this time of year.

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_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056

ollie6a(at)embarqmail.com
Guest

Posted: Fri Sep 07, 2007 5:08 am Post subject: Was Nothing new then now propeller twist

Are you reading F* or C*

  

 Ollie   Central FL



 

 On 9/6/07, Roger Lee <ssadiver1(at)yahoo.com (ssadiver1(at)yahoo.com)> wrote: [quote]--> RotaxEngines-List message posted by: "Roger Lee" < ssadiver1(at)yahoo.com (ssadiver1(at)yahoo.com)>



I agree that 100F sounds way off. It has to be higher than that if the engine is running especially this time of year.



--------

Roger Lee

Tucson, Az.





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