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Anyone have carb ice with intercooled 914?

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rparigor(at)suffolk.lib.n
Guest

Posted: Sun Aug 12, 2007 2:08 pm Post subject: Anyone have carb ice with intercooled 914?

Has anyone ever experianced carb ice on a intercooled 914?



See attached PDF chapter 18.



Rotax has updated website:

http://www.rotax-owner.com/index.htm

Click Support

Click Technical Info

Click Technical articles



Ron Parigoris

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

Posted: Sun Aug 12, 2007 10:34 pm Post subject: Anyone have carb ice with intercooled 914?

Hi! Ron 

My current assessment is that it is unlikely. I believe the uplift of

the ingoing air temperature is quite high without an intercooler from

info. provided by others. I'm expecting in the region of a drop of 20

deg summer and 25 deg. winter

But from the original figures there's still lots of temperature put in

the air by the turbo.

However since it's the venturi effect and humidity which causes the

icing on the carb throat until mine flies in the next two weeks I won't

be sure.

It is a very relevant consideration, a friend pranged on Saturday, he

had been thermaling ,engine off (not a Europa) re-started to land and

decended maintaining 200deg on his cylinder heads when he needed the

throttle to clear power lines to land the engine quit. Finished up in a

sweet corn/maize field totalled but both walked away. That's in the UK

with present humidity levels ! So much attention needs applying when

doing mods 73 and 74.

Regards

Bob H  G-PTAG

--

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acrojim(at)cfl.rr.com
Guest

Posted: Mon Aug 13, 2007 5:21 pm Post subject: Anyone have carb ice with intercooled 914?

Ron



We have been running the 914 with an intercooler approx 600 hrs here in 

Florida. We have not had any problems with carb ice.



I do have a few observations about the subject.



In normal cruise settings I use 33"MP and 5300 RPM. There is enough heat 

going into the airbox at this setting from the turbo, that there has been no 

problem with carb ice. However I can see that if one were to spend time in 

the pattern at low throttle settings below 28 or 29" of MP carb ice could be 

a possibility.



I also can see that things will be different if one has a fixed pitch prop 

installed. I would think that since the MP would be tied  to the RPM , in 

pattern work a very good possibility that carb ice could happen.



Sorry for the ramblings...but your question got me to thinking about how 

carb ice could happen in the 914.



Jim Brown

---

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Gilles.Thesee(at)ac-greno
Guest

Posted: Mon Aug 13, 2007 11:58 pm Post subject: Anyone have carb ice with intercooled 914?

rparigor(at)suffolk.lib.ny.us a écrit :

 	  Quote: 	
		   Has anyone ever experianced carb ice on a intercooled 914?



 See attached PDF chapter 18.



 Rotax has updated website:

   


	


Ron and all,



Never experienced carb ice on the Rotax 914.  French  dealer  Avirex 

says it  is very unlikely.

In our tightly cowled setup the carbs run really warm so the probability 

is low. But in other airplanes things may be different.



Best regards,

-- 

Gilles

http://contrails.free.fr

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Trevpond(at)aol.com
Guest

Posted: Tue Aug 14, 2007 2:40 am Post subject: Anyone have carb ice with intercooled 914?

Hi Jim,

  

 At 33"mp and 5300rpm, what is your fuel usage?

  

  

 Trev Pond

 G-LINN

     [quote][b]

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

Posted: Tue Aug 14, 2007 3:26 am Post subject: Anyone have carb ice with intercooled 914?

Trevor  

Does this mean you had ICE ?  

Regards  

Bob H G-PTAG  

     

Robt.C.Harrison  

  

   

-----Original Message-----

 From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Trevpond(at)aol.com

 Sent: 14 August 2007 11:40

 To: europa-list(at)matronics.com

 Subject: Re: Anyone have carb ice with intercooled 914?  

     

Hi Jim,  

    

   

    

At 33"mp and 5300rpm, what is your fuel usage?  

    

   

    

   

    

Trev Pond  

    

G-LINN  

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Trevpond(at)aol.com
Guest

Posted: Tue Aug 14, 2007 3:33 am Post subject: Anyone have carb ice with intercooled 914?

Only with a Gin and Tonic!

  

  

 Trev

     [quote][b]

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acrojim(at)cfl.rr.com
Guest

Posted: Wed Aug 15, 2007 3:25 am Post subject: Anyone have carb ice with intercooled 914?

Trev

  

 I do not have a fuel flow meter installed.   However on  cross country's over the years, we have found that at these  settings we burn 5 gal an hour.

  

 Jim Brown

    [quote][b]

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