Hi Bud,
I would love to hear what you have to say on the Jabiru, my engineer is
about to start modifications to the cowl, cylinder baffles, etc =AD our goal
is to try and improve CHT temperatures. While we're at it, I'd also like t
o
try and lean the engine and get some better economy, mine is a guzzler.
I've already chatted with various people, including Doug at Jabiru, and I
personally feel that my own aircraft's solutions are (a) sealing off oil
cooler to prevent airflow entering the lower cowl and (b) putting a lip on
the front of the cowl exit in order to help with the exit of air entering
the main 2 holes by the prop. However my engineer (who is a fluid dynamics
expert) disagrees with this approach and doesn't feel it will work - I need
to get more information from him on why. In photographs of my aircraft in
the flare, a similar attitude to a climb, you can see how forward airflow
enters the bottom of the cowl, so to me it looks a no-brainer that we need
a
lip.
Regards,
-Carl.
From: Bud Yerly <budyerly@msn.com>
Date: Sun, 10 Jun 2012 00:21:08 -0400
Subject: Re: Europa-List: Re: Contact detail & Help
Ken and Graham,
I've attached my modifications and techniques briefing used for Europa
Cooling with the XS cowl which written up in the Europa Flyer .
If I do say so myself, I never have cooling issues in Florida at 95 degree
summer days using 50/50 Anitifreeze. Judging by the calls and email succes
s
stories, these simple techniques work pretty much world wide.
References for further study are at the end of the document.
Those who have followed these techniques with a stock cowl have no problems
cooling especially with the trigear. In fact it gets a bit too cool in
cooler climates and this is with no modifications to the existing cowl, onl
y
treating the airflow around the coolers.
I have worked these issues over the last six years and we just finished
three more aircraft at the shop, all Rotax and we reworked a clients Jab
3300, and all the Rotax's have no cooling issues and the Jab is tolerable
except taxi times must be short, 10 or 15 minutes max or it gets a bit too
hot for a takeoff on a summer day.
I'll do another briefing/article on the Jabiru before long.
Call or email me at the office in Florida below if you have need of more
specifics or are having problems getting the references on line.
Regards,
Bud Yerly
Europa Tech Support
US Europa Dealer
Custom Flight Creations, Inc.
www.customflightcreations.com <http://www.customflightcreations.com>
(813) 653-4989
>
> ----- Original Message -----
>
> From: GRAHAM SINGLETON <mailto:grahamsingleton@btinternet.com>
>
> To: ken@ardenrich.co.uk ; europa-list@matronics.com
>
> Sent: Saturday, June 09, 2012 6:48 AM
>
> Subject: Europa-List: Re: Contact detail & Help
>
>
>
>
> Ken
>
> the two people I know who've done most research on the cooling of Europa
s,
> with some success, are
>
> PaulMcAllister <paul.the.aviator@gmail.com>; FransVeldman
> <frans@privatepilots.nl>;
>
> Both have the XS installation, not Classic.
>
> Link to the forum is <europa-list@matronics.com>;
>
> Graham
>
>
>
>
>
>
>
> From: "ken@ardenrich.co.uk" <ken@ardenrich.co.uk>
> To: GRAHAM SINGLETON <grahamsingleton@btinternet.com>
> Sent: Saturday, 9 June 2012, 10:01
> Subject: Contact detail & Help
>
>
>
>
> Graham,
>
>
>
> The Canadian contact details;
>
>
>
> seth.g.london@ca.pwc.com
>
> Have you any chapter on verse or can could point me in the right directi
on
> where to look for the best on a/c engine cooling-cowl design principles.
>
>
>
> Also if poss could you send me the link over to get back on to the Europ
a
> Forum please
>
>
>
> All would be much appreciated,
>
>
>
> Ken
>
>
>
>
>
>
>
>
> href="http://www.matronics.com/Navigator?Europa-List";>http://www.matronhr
ef="h
> ttp://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution";>http://www.matronics.com/c
|