Today's Message Index:
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1. 08:08 PM - Re: Strobe bulb, max rpm, cig lighter switch (N456TS)
2. 08:37 PM - Re: fuse holder and starting procedure (N456TS)
Message 1
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| Subject: | Re: Strobe bulb, max rpm, cig lighter switch |
> Regarding the rough running engine, I have still not solved that issue. It seems
to have smoothed out marginally with additional running hours. The plane sat
unused for one and a half years before I purchased it, Tuned the engine, including
a carb balance, and started running it again. The previous owner said
that this 912 80 HP engine should run smooth at any RPM. Any ideas would be appreciated.
I would solve your engine issues before adjusting the prop. If you adjust the
prop, it will only be masking the real problem.
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N456TS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=460287#460287
Message 2
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| Subject: | Re: fuse holder and starting procedure |
A Rotax should start cleanly and quickly hot or cold. In hot or cold weather.
It's not at all like the aviation engines of old. I've uploaded a video clip
I happen to have when I started my Allegro. It was a cold engine and 83F weather.
You can see the video at: https://youtu.be/mOH_8cDqA30
If your engine isn't starting like this, you have problems.
1. Turn on your electric fuel pump. It can stay on at all times. Rotax now specifically
states you should always have it on. To be clear, having the pump
on can't force extra fuel into the carburetors (unless there is a carb issue
such as a leaking needle valve, heavy or mis-adjusted floats).
2. Throttle at idle.
3. Fuel enricher (choke) on.
4. Start engine. Once engine starts, apply small throttle and turn enricher off.
Allow engine to warm up. Below 2,500 RPM until warm.
Idle should be 1,800 RPM.
The carbs on these engines shouldn't really be tweaked and adjusted. You set them
up correctly and they work. If you're changing adjustments all around, something
is way out of wack. I would find a Rotax mechanic to find and correct
your engine issues. Not a regulator A&P or anyone else who doesn't know Rotax
912's.
You can find people at: http://www.rotaxirmt.com
It's possible, it's not carb related. It could be weak spark, but further investigation
requires hands on access.
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N456TS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=460289#460289
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