battery placement

[Destroyer]

Truthfully, I still don't like the idea of putting batteries in the cuddy on the hull. That area takes the most pounding from a wave. It lifts up the highest and drops the furthest.... add something heavy on the inside of the hull in that area and you are asking for a cracked hull IMHO.

Remember that the hull is designed and braced to take an incoming soft (water) shock against it, not outgoing hard (solid) heavy weight shocks.

Physics tells us that a free falling object accelerates at 9.81 meters per second per second. (9.81m/s^2) So a 25 lb battery (11.33 KG) falling 2 feet (.6096m)
[Think of a 2 ft high chop] has the impact force of roughly 67.69 Joules or 49.93 Ft. Lbs. Put two batteries together and you have the equivalent of roughly 100 ft. lbs pounding on your hull in a 2 foot drop. More as the wave height height increases. And every wave causes that pounding.

The furthest I've gone forward is the area between the captains and the mates seats, and even then I tried to insulate the batteries from the hull itself with several inches of wood over foam that the batteries sit on. Just my two cents.

[jvitiel]

Originally Posted by Slightly_Twisted

Well holes were drilled and it looked ok...so I said go for it.

Cut a 12x7.5 inch hole in the area just forward of the cuddy bulkhead and
Bingo there is a perfect cavity for one battery maybe two if you wanted them on the same side. I’m going to cut the other side tomorrow and take some photos.

Awesome! Good to know!

[BillTex]

Let’s take a step back; what is the motivation for moving the batteries away from the stern anyway?

Maybe I’m missing something...but I just don’t see a good reason.

Unless you have hung an over weight engine on the stern why do you want to do this?

Thx, B

[Slightly_Twisted]

In about a year ish when I repower. I’m going to hang a 36 in set back bracket with a swimming platform and a 200 hp off the transom. I need to rewire the boat now to get a number of basic functions working. With the current under deck setup the only place for the batteries is the transom. With the planed extra weight in the stern I’m trying to offset it as much as possible. I’m doing it now one because I already have everything I need and two I don’t want to have to move the batteries latter rewiring the boat twice.

[steplift20]

Hold on your saying you are going to put on a 36 inch extension( 3 feet sea drive swim platform) off the transom and put on a 200 hp hanging plus a swim platform so you can stand on ?
To me it sounds dangerous Like it's going to rip your transom off But that's just me I would really like to know what the big guns think, I love the steplift too but I don't know if I like that idea

[fixit]

thats awsome, i thought about that but lacked the nuts to start cutting holes.
with a 350mag/bravo 1 in my boat im always looking for ways to get weight forwards.

and yes i have trim tabs already

[BillTex]

Originally Posted by steplift20

Hold on your saying you are going to put on a 36 inch extension( 3 feet sea drive swim platform) off the transom and put on a 200 hp hanging plus a swim platform so you can stand on ?
To me it sounds dangerous Like it's going to rip your transom off But that's just me I would really like to know what the big guns think, I love the steplift too but I don't know if I like that idea

I didn’t want to be the first to say it...but I agree.

I think the OP bought the wrong boat.

The V20 is a great/versatile hull.We love ours. But it sound like you should be in a 23 Formula or similar. I think you are trying to make this boat something it is not.

Good luck, be careful