Doug: You really don't need two batteries for starting--one Group 24 should do it. The old YANMAR starters are dinosaurs in terms of their energy usage but you should still be OK with one battery. Last summer I changed my starter to a newer type of starter (not YANMAR brand) and greatly reduced the energy consumption during starting. By the way, I think the newer YANMAR replacement starters are the same as my new starter in terms of energy consumption.
4D's are a bear to lift! When you look at how much space is used per unit of energy storage, there is little to be saved by using a 4D as opposed to a number of smaller batteries. However, you can significantly increase energy storage by changing your Group 24's or 27's to Group 31's with more amp-hours in essentially the same footprint as the smaller batteries. I have the port quarter berth/starboard nav station layout and the biggest advantage I see is the increased size of the starboard cockpit locker. If you are changing things around, I would look into better access to this space (which I assume is like my port locker now--very shallow and not very usable). I looked into 6-volt golf cart batteries pretty extensively and the only real advantage you get is possible a longer service life on the batteries. They take up the same space per unit of energy stored as 12-volt batteries. I have a boat neighbor who is replacing his 6-volt (wet cell) batteries after 12 years of service on a boat that was not used very much, which is outstanding, but I don't think you can expect this kind of service life on a boat that is used a lot. Even though I like my nav station, electronics have evolved into helm-mounted units and a nav station (for navigation) is really no longer needed. The waterproof VHF units can be mounted at the helm too. Bob On Aug 19, 2015, at 2:08 PM, Douglas Mountjoy via CnC-List wrote: > On Pegasus I have the hot water heater under the port q-berth but soon to be > mover further aft, I will add a bulkhead to keep the heat away from the > battery and I will put a house battery there. either a pair of 6 volts or a > 4d. had one next to the heater and cooked it. I also have a pair of 6vots on > the shelf just aft of the companion way steps. The starting batteries are on > the port shelf by the engine ( a pair of group 24's). I built a temporary > shelf under the stbd q-berth for a second house battery (4d). Plans are in > the works to convert the stbd q-berth into a nav station. battery and holding > tank will get moved again. One other thing I am doing is having a friend > build drawers that go full length in the cabinets, like the ones in the > galley do. Should almost double my drawer storage. I have my windlass powered > off of the engine batteries. > > Doug Mountjoy > sv Pegasus > LF38 hull #4 > somewhere west of Ballard, WA > > On Wed, Aug 19, 2015 at 7:14 AM, Rick Brass via CnC-List > <cnc-list@cnc-list.com> wrote: > I'm helping a friend move his LF38 to NC, and along the way we are making up > a project list. The boat will be used for live aboard cruising. > > The current setup has one new start battery as bank 1, and two old batteries > in parallel as the house bank 2. The old house batteries need to be replaced > in the next couple of weeks, and we would like to maximize the AHR capacity > and try to increase the number of batteries in the house bank. > > The start battery is in the locker under the front half of the quarter berth. > The house batteries are on a shelf on the port side of the engine compartment > (and are a bitch to get to). There is no room for more batteries on the shelf. > > So where have you guys installed additional batteries to increase the size of > you house bank? > > Rick Brass > Jim Schwartz > s/v Sea Ya > 1983 LF38 Hull # 105 > > Sent from my iPad > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the bottom > of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the bottom > of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > Bob Boyer S/V Rainy Days (1983 C&C Landfall 38 - Hull #230) email: dainyr...@icloud.com blog: dainyrays.blogspot.com "There is nothing--absolutely nothing--half so much worth doing as simply messing about in boats." --Kenneth Grahame
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