Today's Message Index:
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1. 09:19 AM - Oil Filters (Jeffrey A Beachy)
2. 04:04 PM - Rotax 912 ULS kicking back! Newbie needs a hand .. (cschmokel)
3. 04:18 PM - Re: Rotax 912 ULS kicking back! Newbie needs a hand .. (Roger Lee)
4. 04:52 PM - Re: Rotax 912 ULS kicking back! Newbie needs a hand .. (cschmokel)
5. 09:06 PM - Re: Rotax 912 ULS kicking back! Newbie needs a hand .. (Roger Lee)
Message 1
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Hugh,
Thanks for your interest. All 7 of the oil filters have already been
sold.
Jeff
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Message 2
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| Subject: | Rotax 912 ULS kicking back! Newbie needs a hand .. |
Hey everyone,
I'm a freshly minted pilot who just bought a Kitfox V with a 912 ULS. It got down
to 11F the night before I decided to take it for a spin with a more experienced
Kitfox pilot.
I hopped in the plane, turned off the mags and hit the starter to limber up the
engine. Let it crank for about 4 or 5 seconds, then turned on the mags and cranked
again. The engine would turn over but wouldn't catch. I probably tried
to start it a total of 10 times or so (full choke) before giving up. I walked
it into a friend's hangar and let it warm up a bit. Tried to start it again
with very different results - now the engine was kicking back! Carefully tried
a few more times and decided to check the engine. I removed the carb bowls
to check for good flow. One was hardly flowing at all so I pulled out the float
needle, blew air/cleaner in there and checked again. It flowed nicely, so
I put everything back. Still kicked back. Tried hooking the battery up to
a charger, still kicked back. All 8 plugs sparked fine. Pulled the plugs and
torched them a bit thinking they might be fuel fouled. Still no go. Sumped
the tanks - no visible water. When starting on only one mag, the startup is much
much smoother but doesn't have quite enough to start by itself.
I'm all out of ideas ..
I'm going to buy a new Odyssey 680 battery, get new plugs, and install the soft
start module .. might build a little space heater with dryer ducting to heat
the cowling, too. Any other ideas?? Thanks!!
Carl
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=267515#267515
Message 3
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| Subject: | Re: Rotax 912 ULS kicking back! Newbie needs a hand |
..
Hi Carl,
Your OAT's are too cold. The engine needs 225rpm to start and with an engine that
cold it might not happen. You may hear the engine crank, but it will never
reach the required rpm to start. The spark is too weak at low rpms.
First re-gap the plugs to .022. make sure that battery is at full charge and is
not old and can't produce the power you need. Next the engine must be preheated.
Look at this post and video from Rotax and it will tell you everything you
want to know about the colder starting. You must live in a pretty cold climate
if it is already 11F. You definitely need a pre-heater for your engine in some
way shape or form. It is not good for the engine to try and start at these
really cold temps without being warmed up.
The preheating system Rotax recommends is called Tanis. There are other ways to
preheat, but this Tanis system seems the way to go. Watch the video and you'll
see why.
http://www.rotax-owner.com/reviews/reviews.htm
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=267516#267516
Message 4
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| Subject: | Re: Rotax 912 ULS kicking back! Newbie needs a hand |
..
Roger,
Thanks for the advice. Hopefully I didn't damage the engine with the numerous
cold start attempts ...?
Carl
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=267519#267519
Message 5
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| Subject: | Re: Rotax 912 ULS kicking back! Newbie needs a hand |
..
Watch the video from Rotax in my post and tell me what you think.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=267533#267533
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