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Geoff Schultz wrote in
: http://www.geoffschultz.org/BlueJack...ical/20061121_ 095647.htm Nice looking electrical installation, Geoffrey. I do have one suggestion for the battery installation, though......to be taken as constructive, I hope. Let's flip the boat upside down and watch the battery box cover. I don't see any locks on the deck that will hold it in place against 500 pounds of batteries coming loose. I can't see any battery hold downs, straps or otherwise in the picture, but maybe you can enlighten me. This battery compartment is somewhat similar to the one in Joe's Jenneau 40DS under the deck at the bottom of the main ladder. His came with at least an internal latching cover that had two deadbolt latches, that weren't going to hold back three Group 31s, much less the monster batteries than you have. So, here's what I did... Turn the blocks in your installation from horizontal to vertical to center the battery in the hole, that's great. Now, in between rows of cells, tight over the labels on both ends fore/aft, add a two hold down 2x4s across those labels, between the caps. The long side blocks in the picture would be in the way of them is why I want them vertically. Make the length of the 2X4 1" longer than the battery compartment's narrow width so the 2x4s must go through matching holes in the plastic...er, ah, fiberglass...boxes. This will prevent the 2x4 from being pushed out of the box when the boat pitchpoles...or broaches. Right near the point where the board enters the holes in the box, screw in a sheet metal screw, leaving the head sticking up an inch to lock the boards centered into their positions, keeping them from moving sideways so they can escape the holes in the box. The wide side of the board is against the battery top...distributing the weight of the battery pounding around upside down in the surf against a large surface 4" wide the full width of the battery top so it doesn't crack the plastic case. The batteries can no longer move vertically in those boxes because the 2X4 is hard against the top of them when installed. They can no longer fall out of the hole, break apart when those battery cables jerk the posts out of them suspended upside down, causing the cells to short adding a battery explosion, or three, to your pitchpoling problem. You can still check the cell water without touching the 2X4s in all cells. To replace the battery, simply remove one of the sheet metal holding screws, slide the 2x4 sideways further into its hole until the other end of it is free of the hole and remove the 2x4 allowing you to easily take out the battery. Cheap...costs almost nothing to do...scrap lumber. Stain it to look like expensive teak or mahogany...(c; Haze Grey to match the batteries would be nice, too. Engrave HOUSE and ENGINE into the wood holders to replace those tacky magic marker labels. There, now I'd be glad to sail with them in these holes....in heavy weather. One less thing to worry over while you're hanging on for dear life! Thanks! Larry -- Everyone else whos huge house batteries cannot survive pitchpoling stand up and slap yourself in the face! IT CAN HAPPEN TO YOU!.... |
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