Yes it is possible to start the GM line with a handle. It is a special design which drives a set of gears on the front of the engine, not the flywheel directly. You need to have the decompression levers held in order to get the inertia then quickly release the lever while still cranking. The design of the crank kicks the handle off once the engine starts.
FYI: Load testing is a little different than capacity testing. A good deep cycle such as yours may or may not test properly on a "load tester" but will pass a capacity test just fine. To perform a proper capacity test you need a regulated load with a constant current draw. Most batteries are rated at a c/20 current rate. So a 100 Ah battery would be tested at 5 amps. You stop the test at 11.6v and determine the cumulative Ahrs consumed. Double it and compare to the rated capacity. A relatively inexpensive device for doing this is: http://www.westmountainradio.com/cba.php Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Feb 28, 2016 1:19 PM, "Doug Welch via CnC-List" <cnc-list@cnc-list.com> wrote: > ok thanks all. another question. is it possible to start the 20GMF with a > handle? I think i will get the surettes load tested and decide whether or > not to replace after that and replace the starter battery with a group 24 > (if it fits). We are also hoping to do more cruising and spending time on > the hook, so we are looking at get set up with solar as well. > > > On Sunday, February 28, 2016 9:41 AM, ed vanderkruk via CnC-List < > cnc-list@cnc-list.com> wrote: > > > We have two T12 136ah ( slightly larger and heavier than a group 27 ) > Rolls house batteries which are now in their 12th year of service. I was > thinking they were near their end of life but a battery equalization last > year seems to have given them a new lease on life. We replaced a Rolls > starting battery after 11 years. > Ed > 1982 LF38 > On Feb 27, 2016 1:20 PM, "Doug Welch via CnC-List" <cnc-list@cnc-list.com> > wrote: > > Our new (to us) 33-2 has a couple of Surette Group 27 Deep Cycle Batteries > of indeterminate age in plastic battery boxes with no lid and a Canadian > Tire 22NF starting Battery (In what looks like a home made wooden battery > box). > > My first instinct is to replace the deep cycles with Interstates and > upgrade the 22NF to a Group 25 Marine Starter Battery in proper battery > boxes (I have seen first hand how quickly a dropped wrench landing on > exposed 12v battery terminals can go very bad). > > The charger is a relatively new looking Professional Mariner ProSport 20 > Heavy-Duty Marine Battery Charger. Both banks are monitored by a cruising > equipment company e-meter. > > My questions are > 1. Does anyone have 2 G27s and a G25? Is there room? > 2. Someone told me the Surette are very good batteries with longer than > average life and I shouldn't be in a hurry to replace them. Experience ? > Thoughts? > 3. Anything else from your experience I should be thinking about? > > Cheers, > Doug > > _______________________________________________ > > 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 > > > > > _______________________________________________ > > 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 > > >
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