Sorry y'all, Dwight and I inadvertently took a good discussion on not switching the batteries off list. Its a bit of a long thread now but I think we would both like to hear what others think.
Josh ---------- Forwarded message ---------- From: "Josh Muckley" <muckl...@gmail.com> Date: Sep 28, 2014 10:05 PM Subject: RE: Stus-List Boat Batteries To: "dwight" <dwight...@gmail.com> Cc: Follow the link for a pdf excerpt from Don Casey's book Sailboat Electronics Simplified. https://docs.google.com/file/d/0B8pEh5lnvP1yY1NHV01vMXJmZUk/edit?usp=docslist_api It looks as though you may be right about the switches being make before break. The concern is having the user accidentally switch to off. I guess as long as you always go 1 to ALL (away from off) then you are probably safe. Then again, Murphy sucks. Josh On Sep 28, 2014 9:25 PM, "dwight" <dwight...@gmail.com> wrote: > I did not realize that the conversation had gone off list, my mistake > again...did not realize you responded only to me when I asked the question > about what you advised...I believe that I posed my question on your advice to > the whole list so maybe some others will chime in > > > > Dwight Veinot > > C&C 35MKII, Alianna > > Head of St. Margaret's Bay, NS > > > ------------------------------ > > *From:* Josh Muckley [mailto:muckl...@gmail.com] > *Sent:* September 28, 2014 10:12 PM > *To:* dwight > *Subject:* RE: Stus-List Boat Batteries > > > > Others won't shed light if we continue to keep this conversation off list. > > I'll try to find my resource. > > Josh > > On Sep 28, 2014 9:00 PM, "dwight" <dwight...@gmail.com> wrote: > > Sorry, Josh, my mistake. Looked down and saw Jonathan's name and missed > your signature line in the thread... but since I have been doing what you > said should not be done, and without any problems, for as long as I can > remember I was curious about the rational of your statement, and apparently > you are in the same boat as me...I believe the big red Perko switches are > "make before break" and I can certainly feel the load on my engine and see > the ammeter show higher charging current when I switch from start baattery > to charge partailly discharge house bank batteries...I figured that was to be > expected. Don't think I'll be changing to that alternate procedure...not > without good reason and if there were a good reason why have I not had a > problem? Maybe others can shed more light. > > > > Dwight Veinot > > C&C 35MKII, Alianna > > Head of St. Margaret's Bay, NS > > > ------------------------------ > > *From:* Josh Muckley [mailto:muckl...@gmail.com] > *Sent:* September 28, 2014 9:31 PM > *To:* dwight > *Subject:* RE: Stus-List Boat Batteries > > > > I think you are addressing me...my name is Josh. > > I have asked the same question myself. It is certainly up for discussion > as I may have been misinformed or under a misunderstanding. > > As I understand it, one would fully charge the first battery, then stop > the engine and switch the selector to all. Restart the engine. > > I guess when you switch the selector while the engine is running, there is > a chance that charge circuit is broken momentarily and the alternator sees > no load causing an inductive kick that fries the regulator diodes. Xantrex > makes a product called a "Zap-Stop" that is supposed to shunt the kick from > through a fuse and diode. IIRC it is attached across the positive ground > terminals on the alternator. Normal operation keeps the diode reverse > biased. The kick is backwards, so that forward biases the diode. > > This is all a bit of a work around for not having an ACR, or isolating > diode, or DC to DC charger. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Sep 28, 2014 6:26 PM, "dwight" <dwight...@gmail.com> wrote: > > Jonathan > > > > From your statement "Remember not to switch the 1-ALL-2 when running the > engine" > > > > If position 1 is for start and position 2 is for house, considering the > statement above how does one switch from position 1 to position 2 for > charging the house bank with the alternator while steaming. > > > > Dwight Veinot > > C&C 35MKII, Alianna > > Head of St. Margaret's Bay, NS > > > ------------------------------ > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Josh > Muckley via CnC-List > *Sent:* September 28, 2014 5:10 PM > *To:* C&C List; Indigo > *Subject:* Re: Stus-List Boat Batteries > > > > +1 to Rick's comments. > > IMO you should get 2 of the largest and highest Amp-hour (heaviest) > "deep-cycle" batteries that will fit in your compartment. Use them > interchangeably to start and run house loads. Others have suggested > switching the 1-ALL-2 selector based on the odd/even day of the week to > equalize run time. > > There are things you can do to improve your setup but if the exsisting > setup has worked without issue for 12 years then I say stick with it. > > Remember not to switch the 1-ALL-2 when running the engine. Doing so can > momentarily break the charging circuit and blow the diodes/regulator in the > alternator. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Sep 28, 2014 10:47 AM, "Indigo via CnC-List" <cnc-list@cnc-list.com> > wrote: > > Looks like I need new batteries! I have lived for 12 years with two > batteries - one used for house and the other kept in reserve via off-1-all > -2 switch. > > Would like to have a dedicated starting battery in addition to two > deep-cells but do not see how I can fit the three in the locker under the > quarter berth - and am reluctant to give up any other locker space. - so it > looks like I will stick to the two. > > I googling marine batteries I see that there are dual purpose ones > available. Anyone know if this is just a marketing "hoax". In particular > Batteries Plus have a Group 27 dual purpose Duracell battery for $95 - > seems like a steal - or am I going to be disappointed with how long I can > expect it to last (I presume all group. 27 give out the same amp/hours - or > do I have to watch out there? > > -- > Jonathan > Indigo C&C 35III > SOUTHPORT CT > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > ------------------------------ > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2014.0.4765 / Virus Database: 4025/8285 - Release Date: 09/27/14 > ------------------------------ > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2014.0.4765 / Virus Database: 4025/8285 - Release Date: 09/27/14 > ------------------------------ > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2014.0.4765 / Virus Database: 4025/8285 - Release Date: 09/27/14 >
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