Europa-List Digest Archive

Thu 03/26/15


Total Messages Posted: 2



Today's Message Index:
----------------------
 
     1. 06:09 AM - Re: Re: Water Coolant Sensor location? (Gustavo Sessarego)
     2. 01:34 PM - Foreign registered Europa (William Daniell)
 
 
 


Message 1


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    Time: 06:09:24 AM PST US
    From: Gustavo Sessarego <gsessare@hotmail.com>
    Subject: Re: Water Coolant Sensor location?
    hello everybody=2C somebody knows how is the procces to leave this list? regards > From: ward.t@xtra.co.nz > Subject: Re: Europa-List: Re: Water Coolant Sensor location? > Date: Sun=2C 22 Mar 2015 12:38:34 +1300 > To: europa-list@matronics.com > > > Absolutely agree with you Remi. > Tim > > Tim Ward > 12 Waiwetu Street > Fendalton=2C > Christchurch=2C 8052 > New Zealand. > > ward.t@xtra.co.nz > > Ph 64 3 3515166 > Mob 0210640221 > > > > On 21/03/2015=2C at 10:31 pm=2C Remi Guerner <air.guerner@orange.fr> wr ote: > > r> > > > > In spite of what Rotax say in their Manuals=2C I do not think that moni toring coolant temperature is necessary. This is why: > > 1. The coolant is heated by the cylinder heads. So obviously coolant te mperature is always below cylinder head temperature. > > 2. Conventional water based coolant boils at 120=B0C at the 1.2 bar pre ssure=2C at sea level. > > 3. Anytime the hottest cylinder CHT exceeds 120=B0C=2C there will be at least some local boiling. > > 3.1. Then=2C if the engine is running at cruise RPM or more=2C the wate r pump insures a good flow through the cylinder heads=2C the bubbles are pu shed downstream to the cooler and condense=2C so there is no boiling over. > > 3.2. If the engine is at idle on the ground=2C while you are waiting fo r your take off clearance=2C then it will boil over. Moreover=2C as soon as CHT reaches 110=B0C=2C you must either shut down the engine or take off qu ickly. If you wait a few more minutes and let the CHT reach 115=B0C=2C then the only choice is to take off immediately. Then the CHT will decrease ins tantly. If you shut down at this point=2C then the heat transferred from th e hot engine to the coolant will make it to exceed its boiling point and yo u are facing a big mess. > > So the only advantage of monitoring the coolant temperature would be to allow the CHT to slightly exceed 120=B0C=2C for example during a full powe r climb in very hot conditions=2C while the coolant temp would stay slightl y below 120=B0C. It seems to me this is a very marginal and risky advantage . > > So in my opinion=2C monitoring the CHT of the hottest cylinder and cons idering the redline is 110=B0C on the ground and 120=B0C in flight is good enough. This is especially true on the Europa where cooling is very good in flight but very marginal on the ground. > > Remi Guerner > > F-PGKL=2C XS Monowheel=2C 912ULS=2C 1195 hours > > > > > > > > > > Read this topic online here: > > > > http://forums.matronics.com/viewtopic.php?p=439699#439699 > > > > > > > > > > > > > > > > > > > > > > =========== =========== =========== =========== > > >


    Message 2


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    Time: 01:34:55 PM PST US
    Subject: Foreign registered Europa
    From: William Daniell <wdaniell.longport@gmail.com>
    It is possible that I may be transferred to the US. Does anyone know how to register a foreign built Europa in the US? thanks Will William Daniell LONGPORT +57 310 295 0744




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