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[quote]QUOTE: Originally posted by broncoman [quote]QUOTE: Originally posted by jruppert I used to work at company that made custom generator packages and sometimes when starting a unit for the first time, a feedback loop between the generator and the governor would cause violent surging in the engine's rpm, is this a problem in locomotives? When working on older Detroit Diesels and starting them for the first time after an overhaul before any adjustments have been made to the governor, they will "run away" and must be carefully kept from overspeeding, is this also a problem? [/quote] When I went through my apprenticeship, my journeyman always told me to keep a clipboard handy when working on non-DDEC detroits. They make a great kill switch.[:D] Of course this only works on 92s and smaller. Randy, How long is the normal apprenticeship for locomotive electricians? When you actually made journeyman, did a wave of terror sweep over you, your first day as a journeyman as you thought wow I am suppose to know all this now. Just curious. [/quote] I don't want to steal your question Randy, I just want to add a comment about Detroits. Often there is a flapper over the intake, held open by a quadrant. Flip the pawl and it shuts off air to the engine. I have seen engines continue to stumble after asphyxiating them, they will suck oil from blower seals, valve guides, anywhere! and keep running!
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