Thanks Duncan.
That is precisely my point, sort of been there done that and I wouldn't
be writing this had I been on a long flight particularly over long legs
of water ! So in the established cruise since it overcools anyway I
disconnect the cooler from circuit and therefore no dramatic oil loss if
the cooler is ruptured.
I guess if then the Rotax system is pressurised when stopped the
pressure will back feed to the cooler and then leak ?
So without priming does the oil pump still fetch oil once running ?
Regards
Bob H G-PTAG Europa MKI/Jabiru 3300
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Duncan
McFadyean
Sent: 24 January 2006 21:48
Subject: Re: Europa-List: RE: Oil Thermostat
<ami@mcfadyean.freeserve.co.uk>
Bob,
The recent problems with leaking joints on the Rotax-supplied oil
coolers
(MPD issued by PFA) resulted in air leaking in and loss of oil-circuit
priming, not oil leaking out.
Before you you respond (!), don't forget that Jab's (particularly the
less
smoothly running 2200) have suffered numerous oil cooler circuit
failures on
a number of aircraft types (Rans S6 and Renegade to name two).
This is has a lot to do with the oil cooling circuit running at full
system
pressure.
Duncan McF.
----- Original Message -----
From: "R.C.Harrison" <ptag.dev@tiscali.co.uk>
Sent: Tuesday, January 24, 2006 9:16 PM
Subject: RE: Europa-List: RE: Oil Thermostat
<ptag.dev@tiscali.co.uk>
>
>
> Ok Jos thanks for that, However what if the cooler breaks and you
start
> loosing oil (I had that problem but only on a half hour flight!) With
> mine the cooler is in circuit only a miniscule period of time so a
leak
> would be kept to the absolute minimum when you landed you'd get to
> notice before the "donkey" packed up aloft !
>
> I've just seen Richards message as to where the cooler on the Rotax is
> situated so similar may apply except it would be pulling air in ......
> don't you believe it IMHO oil would still p.... out !
> Regards
> Bob Harrison G-PTAG Europa MKI/Jabiru 3300
>
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of josok
> Sent: 24 January 2006 18:20
> Subject: Europa-List: RE: Oil Thermostat
>
>
> Hi Nigel, Bob,
>
> OA, the German Rotax dealer has as a Rotax addon an oil thermostat
> available. This is a thermostat with 4 ! connections, and only changes
> the oil flow through the radiator or direct. So, if this thermostat is
> closed, the oil pressure does not even have to deal with the
resistance
> of the radiator. If this thermostat would hang closed, you would
notice
> a rise in oil temperature, if it stays open, oil would not reach a
> sufficient temperature. IMHO, a manual operated flap or anything that
> adds to (this new-by) pilot workload is more error-prone.
>
> Regards,
>
> Jos Okhuijsen
> ----------------
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