Good luck with the troubleshooting. Can’t recall if I responded with this but some 33-2 electrical info and photos here
http://cncwindstar.blogspot.com/p/blog-page.html?m=1 Dave Sent from my iPhone > On Aug 14, 2019, at 8:46 AM, Wade Glew <wadeg...@gmail.com> wrote: > > thank you to all who responded to my email. I wont be back to the boat for a > couple of weeks but you've all given me lots of information and suggestions > of a plan to go forwards. Thanks again, will let you know how it goes > Wade > Oh Boy C&C 33 MK II > >> On Tue, Aug 13, 2019 at 9:31 PM Garry Cross via CnC-List >> <cnc-list@cnc-list.com> wrote: >> My 2 cents. >> Sounds to me like two different bad connections. There is a bad connection, >> likely ground path on Batt 2, just the load of the normal house circuits >> cannot flow through it. For Batt 1 it sounds like another bad connection but >> the house circuit does not draw enough current to drop the voltage enough >> that things stop working but the start current drops the voltage to much. >> It's all about ohm's law. I = V/R or V = I*R. So with low amps there is less >> voltage drop over a bad connection. Raise the current and you produce more >> voltage drop. Push 1 amp through a 6 ohm resistance and your gonna drop 6V. >> Put a voltmeter there with no load it will read 12V. >> Another way, put a voltmeter between the battery - terminal and the + at the >> starter. It likely will read 12v. If you hit the start button and the >> voltage stays at 12v then the issue is in the ground path. If it drops the >> issue is in the hot path. >> >> >> >>> ---------- Forwarded message ---------- >>> From: Jeff Helsdingen <onemorej...@gmail.com> >>> To: cnc-list@cnc-list.com >>> Cc: >>> Bcc: >>> Date: Tue, 13 Aug 2019 18:47:46 -0400 >>> Subject: Re: Stus-List Electrical Advice >>> I would imagine it would also be prudent to check the connection of all the >>> ring terminals on both the power and ground circuits from the battery >>> through the battery switch and to the starter. Since it's a "new" problem >>> I wouldn't immediately think that wire sizing might be a problem as well >>> but "original" cabling that has had lots of extra things added can suddenly >>> become undersized quickly too. >>> >>> Jeff Helsdingen >>> Caposhi >>> C&C 35 mk 1 #54 >>> Port Stanley On. >>> >>>> On Tue, Aug 13, 2019 at 2:14 PM Frederick G Street via CnC-List >>>> <cnc-list@cnc-list.com> wrote: >>>> Agreed, sounds like a bad ground. Voltage is one thing; but enough >>>> current to crank is another, and definitely something that will be >>>> adversely affected by bad ground continuity. >>>> >>>> — Fred >>>> >>>> Fred Street -- Minneapolis >>>> S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI >>>> >>>>> On Aug 13, 2019, at 12:39 PM, Dennis C. via CnC-List >>>>> <cnc-list@cnc-list.com> wrote: >>>>> >>>>> Clean all the ground connections. >>>>> >>>>> Dennis C. >>>>> >>>>>> On Tue, Aug 13, 2019 at 12:26 PM Wade Glew via CnC-List >>>>>> <cnc-list@cnc-list.com> wrote: >>>>>> Hello listers, I would appreciate any advice you might have on my >>>>>> electrical issue du jour. >>>>>> >>>>>> Mine is a C&C 33 MK II and I have a Link 20 battery monitoring system. >>>>>> Bank 1 (house) is 4 Trojan T-105 (225 AH) 6V deep cycles about 5 years >>>>>> old. Bank 2 is a 12V starter battery dated 2005. I look after my >>>>>> batteries pretty well and the system seemed to be operating normally. I >>>>>> have a True Charge 40 battery charger. One morning after several days >>>>>> out sailing, drinking lots of cold beer from the fridge and lots of >>>>>> music playing) and running the engine very little, the engine would not >>>>>> start. Starter turned slow, felt like no battery power. I had the >>>>>> Master Switch on 1 so I turned the switch to Battery 2 at which point >>>>>> all 12V electrical activity on the boat stopped working altogether. >>>>>> Prior to switching to Bat 2, the Link 20 showed my starter battery at >>>>>> 12.4V with estimated time on battery remaining at 225 hours. I put a >>>>>> portable battery pack onto my starter battery and it read 12.4 V from >>>>>> the battery. However, powering up the battery pack and connecting to my >>>>>> starter battery allowed me to start the engine. >>>>>> >>>>>> I went back to harbour and replaced my starter battery with a brand new >>>>>> 1000 cranking amps 12V battery. I charged by shore power overnight then >>>>>> left for a few more days on the water. >>>>>> >>>>>> Now, the current circumstance is this. >>>>>> When connected to shore power and Main Switch set to Bat 1, I see >>>>>> normal charging voltages to both battery banks. >>>>>> When under engine and Main Switch set to ALL, I see normal charging to >>>>>> both batteries. >>>>>> After sitting overnight on anchor, I see both Bank 1 and Bank 2 are >>>>>> resting at about 12.5 V. Both banks show plenty of reserve on the Link >>>>>> 20. When I try to start the engine it feels again like I have low >>>>>> battery power. The engine barely turns when I set the Main Switch to >>>>>> either Bat 1 or ALL and won't start. If I change the switch to Bat 2, >>>>>> all 12V electrical activity on the boat instantly stops. If I put the >>>>>> portable battery pack onto my starter battery with the switch in the ALL >>>>>> position, the engine will go however, it still feels like the starter is >>>>>> turning too slowly. >>>>>> >>>>>> I'm looking for a single cause to explain all this as up til now, the >>>>>> system has functioned well for the 10 years I've owned the boat. I >>>>>> would appreciate any suggestions >>>>>> >>>>>> Wade >>>>>> Oh Boy, C&C 33 MK II >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each and >> every one is greatly appreciated. If you want to support the list - use >> PayPal to send contribution -- https://www.paypal.me/stumurray >>
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
