Alen
Allen in my normal cruise I run the 914 at 5300 RPM and 34" MP When I am about
10
minutes from landing I start to reduce the MP pressure one inch, then run about
two minutes and reduce the MP another inch, and so on, until I'm at 28 or 29"
MP. At this point the turbo is not producing any boost, and then it will start
spooling down. By the time I land the turbo has cooled down to normal temp's and
I shut down the engine, once I'm parked.
Turbos generate a lot of heat when they are being used. I find its better for me
to cool it down in the air rather than set on the ground and run the engine for
five minutes, before shut down. Besides here in Florida ground running for 5
minutes with a heat soaked engine means the coolant will overflow!!!!!!
Jim Brown
N398JB
Alan Burrows wrote:
>
> This is all good stuff, but has anyone got any advice on my original
> question. Which was; is it necessary (or desirable) to reduce manifold
> pressure gradually in the decent prior to landing AND is it advisable to
> let the engine run for several minutes on the ground before shut down to
> allow the turbo to cool (with an oil supply) and if so how long?
>
> Alan
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of Jeremy
> Davey
> To: europa-list@matronics.com
> Subject: RE: Europa-List: Rotax 914 question?
>
> --> <EuropaFlyer_3@msn.com>
>
> Almost correct. It's intended to use European _standard_ mogas (95
> Octane, often referred to confusingly as 'premium', but North American
> folks please we aware we measure Octane differently, quoting higher
> numbers for the same stuff). The _premium_ stuff (97 to 98, often called
> 'super') is not recommended for use in aircraft (some volatility issues
> at altitude, I believe).
>
> As an aside for the UK folks, rumours are currently rife that Shell is
> about to release V-Power here instead of the current Optimax - which
> means 99 or 100 Octane for your sports cars.
>
> Regards,
> Jeremy
>
> Jeremy Davey
> Europa Monowheel 537M G-EZZA
> Europa Club Vice-Chairman, Webmaster, PFA NC Representative
> PFA EC Member
> "If you can keep your head when all about you are losing theirs, then it
> is possible you haven't grasped the severity of the situation." Tail
> done Standard XS wings with mods underway CM installed in fuse (with
> airbrakes fittings) 1400 build hours to date Intended fit: Rotax 914
> turbo, Airmaster CS fully-feathering prop Lots of lights, buttons,
> switches, gizmos, and alarms
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of William
> Daniell
> To: europa-list@matronics.com
> Subject: RE: Europa-List: Rotax 914 question?
>
> --> <wdaniell@etb.net.co>
>
> Yup think so - the engine as I understand it is designed for European
> premium mogas
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of
> ivor.phillips
> To: europa-list@matronics.com
> Subject: Re: Europa-List: Rotax 914 question?
>
> <ivor.phillips@ntlworld.com>
>
> Thanks for that,! Another good reason to use unleaded if you can. Ivor
> Phillips XS486 London UK
>
> 100ll - because the premium mogas in Colombia where I live is only 91
> > octane.
> >
> >> My turbo seized but not due to this - it seized from build up of
> >> carbon
> >> in
> >> the hot side - which I gather is pretty weird. After cleaning it
> worked
> >> fine.
>
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