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I think on the other battery, where the charger would go on & off, it is probably dead. The 0.49v and then the 14.48v readings are the charger cycling for '0 volt activation', but the battery is not activating. Still a puzzle as to why/how the other battery is taking so long to come up. Might...

Following this battery charging saga . . . here is the progress summary. I do better with pictures :LOL:

I would check your work in installing the new pump. Usually you would be putting soap on the impeller and housing internals so the impeller has some initial lubrication upon first start. Also, you may want to flush the cooling system with a de-scaler solution. I have a 1980's 25 HP that was...

I've always considered the trim (and trim limit) senders a bad design, since that electrical stuff is below the water line, and the associated movement of the outdrive promotes fraying of the wires. Hopefully, you've got it sorted out now. Are you going to keep the Chappy? Did you buy the...

No . . . They may come somewhat close to the braces, but the engines need to clear the swim deck, which is about 2 feet lower than the sides of the boat. It is just that the braces need to clear the sides of the boat so the gantry can be positioned over the engines. See my mock-up below as to...

If/When the voltage gets up into the 12.5+ range, I would disconnect from the charger to see if the voltage holds. When charging a battery is often difficult to determine how much of the voltage is the battery vs. how much is the charger. Anyway, the rate of charging is suspect. It is almost...

Yes, the driveway is not smooth by any means; it has a pea stone topping embedded into it that makes for a bumpy ride of the casters. The structure does move OK to the extent that it needs to. I plan to move the boat forward and slide the gantry over. Then move the boat back in place. As I...

'finish washers' may be an alternative to give regular screws a way to distribute the load better

I would use screws with a flange. Also use thicker screws, pre-drill as needed

Pretty much done . . . I got outside early, before the wicked storm starts, and finished up the gantry. . . . . I'm using moving dollies as my "poor man's" casters. . . I might need another couple right under the posts, but we'll see. (1,000 lb rating each) One critical design aspect about...

We are forecast to have 30 mph sustained winds and 45 mph gusts, today -> Monday. I should have time to finish the upright supports this AM, as the rain will be hitting late morning.

Here is what may be happening . . . My 24 footer would do this all the time.

Bunk trailers have a tendency for the boat to 'pull-away' from the bow stop as the boat/trailer are pulled up the ramp. This happens because with the trailer on the ramp and the boat still floating, the hull contacts the forward part of the bunks. As the boat comes out of the water...

BTW - if you want to check out the DIY solar forum ( https://diysolarforum.com ) there are a few not-so-kind posts about the CHINS batteries.

Those voltage readings look a bit suspect. It will be interesting to see what you get with the batteries at their 'resting' voltage (charger disconnected) after a day or 2 of charging. Those are 50 Ah batteries, IIRC, so they should charge in a day or so. I know my AGM batteries, which were...

@alldodge - temporary oak spars, part of the finishing touches will be to replace with 2x lumber when I true-up the uprights. @redneck joe - Snow maybe in January . . .

And so it begins . . . I built the gantry over the past few days. I was initially thinking about a 10 foot tall structure, but I went with 12 feet tall just to make sure the engines would clear the deck. Doing so, I up-scaled the top beam material to 2x12's and everything else is 2x6. Of...

Nice video . . . What time of year was that? The place looked deserted . . .

Here is the rear labeling . . .

IIRC, my sailboat trailer had passenger tires . . . not a heavy boat . . . around 2K lbs.