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Showing results for tags 'dynamic balancing'.
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After having the prop overhauled it seemed reasonable to do a dynamic balance. This is a first for me. I was the assistant only and my AME is using the equipment for the first time. We had quite a time of it. Often getting close to the .06 ips. But when the rpm was raised to cruise speed the whole thing went off the rails i.e. not balanced at all. To make a long story short; we pulled, cleaned and tested the plugs. That was a real eye opener. Six of the eight plugs gave up on us once the pressure neared 80 psi. Some far before that pressure. Needless to say I replaced the plugs and we managed to balance to .01 ips. So here's the thing for me; The plugs were replaced August of 2015. The is less than 200 hours on the plugs. Probably quite a bit less. Never having done dynamic balancing before, it seems like such a good diagnostic beyond obtaining a smooth running machine.
