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kitfoxnick
Joined: 13 Apr 2008
Posts: 33
Location: Northern Maryland
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 Posted: Sun May 25, 2008 2:31 pm Post subject: Mag drop Question |
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On my 912 ul my mag drop left side is 350 rpm. The right side is 300 seems excessive. These checks are done 3900 rpm. Pulled plugs all look fine. Only 103 hrs but 12 years old. Is this normal? Another question what are typical egt's for this motor. Any thoughts would be great thanks.
Nick
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Nick Weiskopf
Norrisville, MD
kitfox !V-1200
Rotax 912ul |
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wingnut
Joined: 11 Jan 2006
Posts: 356
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| Posted: Mon May 26, 2008 5:33 am Post subject: Re: Mag drop Question |
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I got this from the ROAN Rotax owners FAQ:
-I have a bad mag drop, what do I do?
First determine if you have a carburetor problem or a ignition problem; (WHAT?? Yes, the Rotax 9 series dual carb system can confuse the owner as a carb problem may show up as a high mag drop on one ignition system)
Procedure:
- Run the engine at 4000rpm (approx 1700 prop rpm) and perform a mag check. Record the numbers.
- Slowly pull the choke out half way, the RPM should rise about 200 RPM.
- Try the mag drop and record numbers.
- If the problem is worse or better the carbs are suspect.
- If there is no change the carbs are not suspect, you likely have an ignition problem.
If you have an ignition problem use the Ignition troubleshooting guide to find the source.
If you have a carb problem see Carb troubleshooting
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Luis Rodriguez
Model IV 1200
Rotax 912UL
Flying Weekly
Laurens, SC (34A) |
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