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Peter Albright

I have a '77 H30, with the majority of the interior woodwork in my garage. I am trying to find the best place for 2 8D AGM batteries. I can't put them on top of the keel. The port settee is closer to the centerline, but I don't want to chop out the water tank. I am totally enclosing the engine, with a partition just aft of the shaft log. I am considring putting a compartment for the batteries behind this partition, between the quarterberth and the lazarette. They won't be easy to access, but that is why I got AGM batteries. With the engine in place (3GM30f), and one 8D battery on the rear of the port settee, and the mast removed, the boat is hign in the stern. The mast must be aft of the hull's center of gravity. I am concerned about how adding 325# this far aft will effect boat handling. Anyone have any thoughts? Pete Albright s/v Nancy Ross Tampa, FL
 
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Henry Weber

wt. aft in H30

Hi Pete I would also be concerned about the weight so far aft. In my H-30 77 the stern squats down about 8 inches at least when underway. Normally my exhaust port is above the water surface by 6 in. Underway it submerges. Why don''t you put two extra people in the cockpit as far aft as possible and see how the boat handles?
 
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jcherubini

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Jan 22, 2003
744
Hunter 25_73-83 Burlington NJ
Batteries location

I agree that putting the batteries aft of the engine and shaft log is NOT a good idea. The boat may indeed seem nose-heavy without the mast in it since mast rake and other things deceptively influence centre of gravity aftwards. The best place for twin batteries that I can think of is where the front edge of the quarter berths would be. On a Hunter 30 I guess his means one's under the galley-- but you could locate one to either side of the flywheel then. Here they can be made easily accessible, they will balance each other side-to-side, and they are in a good place fore-and-aft-- a healthy compromise between proximity to the starter and electrical blocks and moving them farther forward towards the centre of gravity (where ALL weight ought to be concentrated). Moving the batteries too far away may necessitate going up a wire gauge or two (lower number) for the starter leads. The wire adds weight too which a lot of people don't always think about. I would also worry about putting the batteries anywhere that you can't get a good look at the tops of them within about three seconds. For the prudent yachtsman it must ALWAYS be safety first!!! JC 2
 
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Pat McCartin

Battery location

Peter, I have mounted 2 8D's just aft of the engine, in front of the fuel tank. I had to extend the sub-floor to 36" but with the 12 gal tank 2 batt's fit snugly. After doing this the boat was low in the stern. I countered by adding a 42 gal water tank under the Stbd sette. Now she sits level and there is a noticable difference in her stability. Pat McCartin 1979 H30 "Therapy" Lake Lanier, Ga
 
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Peter Albright

Stability Difference

Pat, you wrote "...there is a noticable difference in her stability." What do you mean by this? Stability is improved, or worsened? Are you happy with this installation? What type of tank did you add? Thank you, and Henry and John for your relpies. Pete
 
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Pat McCartin

Sorry I was unclear...

With both tanks full, the boat handles the rough wakes (3-4') much better and doesn't heel as fast. I'm thrilled with the install. I used a Vetus 42.5 Gal tank from Boat US. Pat
 
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