Thanks John, for a crisp clear comment/answer.
Regards Gert
Gert Dalgaard Soerensen
Stabelvej 9, Haarby
DK 8660 Skanderborg
Denmark
Europa builder No. 151
Europa Classic / Rotax 914
AC reg.: OY-GDS
Phone.: +45 8695 0595
E mail: lgds@post6.tele.dk
http://home19.inet.tele.dk/dalgaard/oygds.jpeg
sndag 24. aug 2003 kl. 02:28 skrev Europa Aircraft:
>
> Hi All,
>
> This brings up a good operational point. If the wastgate gets stuck on
> takeoff, then 4 things will happen.
>
> 1. The red TCU warning light will illuminate.
>
> 2. The manifold pressure will advance above 39"
>
> 3. The tachometer will indicate an over speed.
>
> 4. The engine will sound very different.
>
> If you ever notice any of these really obvious indications, abort the
> takeoff, taxi back & free the wastegate. If you do this, then no
> engine
> damage will occur.
>
> If you don't catch it until after liftoff & there isn't enough runway
> to
> land, then bring the throttle back to 39" or less, and return for
> landing.
> You will need to carry out some inspections as prescribed by Rotax, as
> you
> have probably exceeded max boost, or RPM for over 60 seconds.
>
> If the wastgate sticks in cruise, then the engine will probably knock
> at
> high altitudes. In this case the wastegate is not stuck shut, it
> simply
> can't adjust to regulate boost, and air box temperature. Manifold
> pressure,
> or RPM will not exceed limits. The only indication, other than a
> knock, may
> be a high EGT, followed by a low EGT after the engine gets rough. In
> this
> case pull back the power & descend to a lower altitude (usually below
> 8,000') Monitor your EGT, listen for detonation & proceed to a good
> MX base
> where you can free your wastegate.
>
> Usually a stuck wastegate is caused by lead contamination, which can't
> happen with auto fuel.
>
> The wastegate can be removed and cleaned if it becomes too dirty.
>
> Thanks to Rotax North America tech support for the above info.
>
> Happy Flying!
>
> John Hurst
> Europa Aircraft
> Lakeland, FL USA
>
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com]On Behalf Of
> TELEDYNMCS@aol.com
> To: europa-list@matronics.com
> Subject: Re: Europa-List: 914 Overboost?
>
>
> In a message dated 8/23/2003 4:11:40 AM Eastern Daylight Time,
> rparigor@suffolk.lib.ny.us writes:
>
>> Curious, many problems with 914 Europas over boosting and trashing
>> engine?
>>
>
> I know of one case. A guy who flys sailplanes out of our field also
> has a
> 914
> powered Katana. His waste gate stuck closed because of lead fouling
> (from
> running 100LL) and ended up snapping the crankshaft because of
> overboost.
> Rotax
> didn't warranty it either.
>
> Regards,
>
> John Lawton
> Dunlap, TN
> A-245
>
>
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