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Engine vibrations

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hcccs

hcccs

New Member
Joined
May 19, 2010
Messages
3
Location
Stockholm Sweden


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Having restored the engine of my homebuilt Jodel (french model) I have some strange vibrational problems. The engine is a Continental C90-12F, Bendix magnetos and MA3-SPA carb. At around 1000 and 2000 rpm I have vibrations and at 1500 rpm no vibrations at all. I have turned the propeller 180 degrees and tested another propeller but it didn't help. Before the restoration the engine ran very smooth with no vibrations at all.
Any ideas ??
 
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