Today's Message Index:
----------------------
1. 12:57 AM - Rotax EGT Probe Threadlock Compound?? (darinh)
2. 04:55 AM - need help with 912 rotax GROUND MAGNITO's hook up (Geoff Heap)
3. 03:04 PM - Re: Re: Bing carb tuning (Noel Loveys)
Message 1
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| Subject: | Rotax EGT Probe Threadlock Compound?? |
My EGT probes on my 914 keep coming loose (they are safety wired so they will not
come out). Does anyone know of a threadlocker or retaining compound that will
withstand the temps? If not, what is everyone using to keep these darn things
in place? If you know of something, a manufacturer and a part number would
be greatly appreciated.
--------
Darin Hawkes
Series 7 (Phase 1 - Flight Testing)
914 Turbo
Kaysville, Utah
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http://forums.matronics.com/viewtopic.php?p 9615#209615
Message 2
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| Subject: | need help with 912 rotax GROUND MAGNITO's hook up |
There are two, 6 position contact plugs at the electrical module on top of the
engine. Each one has the 6th terminal empty, ready to take the grounding wire
from the Magneto to the ignition start switch for shutting down the engine.
I have the terminals for the wires to connect into these two empty terminals. My
question is this.
Do the 6 position plugs need to be removed from the electric module before inserting
my wires. Or can the wires simply inserted into the holes while the plug
is still connected to the module.
I have inserted a terminal into the hole as a test and it will pull back out fairly
easily which suggests to me that this is incorrect.
i have tried to remove the plug from the module so that I can hook it up more easily
but I find it impossible to remove. Ive never seen it separated so I'm not
sure where the split line is. Can someone advise, Thanks......Geoff
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http://forums.matronics.com/viewtopic.php?p 9629#209629
Message 3
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| Subject: | Re: Bing carb tuning |
The airscrews only come into play when the engine is idling... As long as
you don't idle your engine for extended periods except for a five minute
warm up I wouldn't worry about it... just use the factory defaults. The
engine is designed to run a bit rich at the idle so extended periods of
idling may cause your plugs to foul. At full throttle engine mix can be
adjusted by loading the engine ( richer ) and changing the main jet in the
carbs. Several people will also change the height of the jet itself with
the seasons to give a bit richer mix at cruise throttle during cold months
when the air is more dense.
About the five minute warm up. I actually keep a stop watch in the plane
for the warm up. Two minutes at a 2000 rpm idle. Two minutes at 3000rpm by
this time the instruments should be stabilized and an additional minute at
3500 rpm. Once that is done I will do my mag and throttle tests. This
procedure was recommended to me by a Rotax repair centre.
A bonus to having the stopwatch left in the plane is I then have a watch and
timer for my flight. I start the flight time when I firewall the throttle
and end it when the plane has come off step (floats). I use hobbs time for
engine maintenance.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Tom Jones
Sent: Monday, October 20, 2008 12:21 PM
Subject: RotaxEngines-List: Re: Bing carb tuning
> am wondering how someone would safely adjust the air screw while the
engine is running since the air screw faces the propeller?
Crystal, I wonder the same thing. When I first set up my 503 I read those
instructions then went out and looked at the close proximity of the prop to
the front carb air screw and said to myself, "Self, no way!"
I tried turning the screws a slight amount with the engine off, then
starting it up to check the rpms and smoothness. I ended up with the screws
right back where the instructions recommended for the initial setting.
I have not found that I need to change carb jets, or adjustments nor prop
pitch with the seasons on this engine. My 503 is the DCDI model. It runs
like a sewing machine year round.
--------
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA
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http://forums.matronics.com/viewtopic.php?p 9471#209471
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