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Re: Europa-List: To gill or not to gill

Subject: Re: Europa-List: To gill or not to gill
From: Pete Zut <peterz@zutrasoft.com>
Date: Wed, 9 Feb 2022 17:54:35
Fwiw  i luv this cheap bluetooth thermometer for undercowl temp monitoring.
Even logs snd graphs.

https://www.amazon.ca/gp/aw/d/B08S32598J/?_encoding=UTF8&pd_rd_plhdr=t&;
aaxitk=fa618ac76940a7a559b575ec82cdd4fb&hsa_cr_id=3515932720301&ref_=
sbx_be_s_sparkle_scm_asin_0_img&pd_rd_w=MdCil&pf_rd_p=6bf407be-0d81-4bc
8-b6f9-c624841b7524&pd_rd_wg=TD5tH&pf_rd_r=1GTNHFMSNY2CGHWB36YK&pd_rd_r
=3144dfe7-de34-4432-89e2-0defb040c739

Cheers  peteZ

On Wed., Feb. 9, 2022, 5:28 p.m. Bud Yerly, <budyerly@msn.com> wrote:

> Chris,
>
> Cooling gills are an issue for some Classics and XS but if the draw out
> the bottom cowl is good, you will not need them.  If the firewall is made
> as in Cooling 101 on my website, and it all works, leave it.  But test.
>
> The 912 and most 912S engines will slightly over cool if all the cooling
> mods are done.  914s tend to run hotter, especially in the climb.
>
>
> Cool oil this time of year is not uncommon with a 912.  One can set up a
> butterfly over the bottom of the glycol cooler on an XS to warm up the oi
l
> but don't forget and leave it closed.  This warms for takeoff and is
> adjustable in flight.  Creighton Smith used a Lenovo glycol to oil cooler
> and it works really well summer and winter in his *Classic*.  Some have
> oil thermostats, and these are tolerable for most.
>
>
> Like Ron mentioned.  Simply test. Does the oil cool in the climb fine in
> mid summer and this is only a cruise problem.  If cool all the time,
> check the sensor, if it is OK, use aluminum tape to partially block the o
il
> cooler face and fly.  I use a thermocouple to check my under hood temps
> rather than tapes, but the process is the same.  Harbor Freight $50 and a
> long probe to monitor the oil temp and other components.  It works for
> testing just like the tapes.
>
>
> I use my gills as a forced air exit for my footwell mounted fan cooled
> TCU/Servo box.  I left the other as is for symmetry.  It's an
> experimental!  Tape over the gills and if all is OK fill them.  On some I
> removed the gills and put in an access panel for a battery plug.  On the
> other side, a small access door to store the funnel for glycol filling an
d
> oil filling.
>
>
> It will get hot in a few months.  Test again in full summer.  Make your
> decision, then paint.  It is better to do the painting in the summer
> mornings anyway.
>
>
> If you do everything to cool, most of the time the 912 engine will
> overcool.  Make a cowl flap to close off the exit or put a butterfly in
> the inlet.  On an XS, a butterfly can be done and a mechanical push pull
> and arm mechanism will not have to be disconnected to remove the cowl.  T
hat=99s
> convenient.
>
> If the cowl flap is chosen it affects both the glycol and oil temps.  Tha
t
> may not be convenient.  The butterfly can be oil only or do one for both
> oil and glycol.  That=99s convenient too.
>
>
> Cowl flaps are best to be moved electrically as the cowl flap mechanism
> has to be attached to the cowl.  It is far easier to remove a plug on the
> top of the footwell rather than a linkage.  Make an electronic thermostat
> control using an Arduino and some sensors if you want.  No matter how
> simple, a cowl flap with a mechanical linkage requires me to crawl under
> the airplane.  That is not hard, it is the getting back up that=99s
 hard.
>
>
> Enjoy your plane.  Sounds like you are having fun.  That is the point of
> building.
>
>
> Bud Yerly
>
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com <
> owner-europa-list-server@matronics.com> On Behalf Of n7188u
> Sent: Wednesday, February 09, 2022 2:01 PM
> To: europa-list@matronics.com
> Subject: Europa-List: To gill or not to gill
>
>
> Hello Forum Members,
>
>
> Quick question, I never opened my top cowling aft gills. Temp strips
> installed inside the engine compartment confirm that my voltage regulator
> at the firewall, the battery also at the firewall and the engine's igniti
on
> modules are all running bellow the strips minimum temperature of 130F.
>
>
> In general I am battling low oil temperatures even during climbs in summe
r
> where the temps are normal.
>
>
> I searched in the forums for info on this subject and it seems the
> consensus gravitates toward not opening the gills.
>
>
> Any thoughts?
>
> Chris
>
>
> Read this topic online here:
>
>
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