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We have a converted Port of London Authority patrol boat built in 1963 that I am busy overhauling before selling it.
It has twin Twin C6TFLM 6 cyl Rolls Royce engines, and the engine room has a whole bunch of systems - mostly redundant/ancient that I will be removing, replacing or leaving as is.
Can any one tell me what these 2 Lucas CAV "current voltage control" units do - Inverter? Alternator control? Alternator to battery voltage regulator ? Each engine has a massive alternator on it (and a fire pump of course!) and there are 2 banks of 24v batteries.
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Last Edit: Jul 6, 2020 20:41:29 GMT by wightfug
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In a nutshell, no. I'm sure someone on here will.
I love boats though. Are the engines diesels? I would love to see more. Is she built for speed or stability?
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Ritchie
Club Retro Rides Member
Posts: 765 
Club RR Member Number: 12
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If the positive output from the alternators is common and goes to these, where it then splits to the 2 battery banks then I'd reckon on split charging regulation for the 2x battery banks.
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Thanks Ritchie - split charging control is something I had not thought of but makes sense as you can select either battery bank to be running onboard loads as there is no seperate house bank
Yep diesel. Built for a good turn of speed and manoeuvrability as she has twin Schottel drives with pulling props.
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Hi, For two alternators to charge one set of batteries they need to be phased together other wise they don't work properly, which would be complicated by possibly running at two different speeds. Having two separate set-ups gets round that. It would be worth checking whether some systems are run off one battery set and others off the other set. It could also be the case that at certain times only one engine will be being used.
Colin
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