85 Grumman 14' Deep V "Grumpy" Ongoing Restoration

[matt.probuilder]

This is my 14 foot deep V Grumman. It gets pushed around the lake with a 1986 25 horsepower Mercury. I purchased it semi restored from the previous owner who was having health problems "$1500". He also had the entire motor rebuilt last year and it runs incredibly well and starts on the first pull.

I've got many plans moving forward including a deck from the existing one back as well as redoing the paint and carpet.

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[matt.probuilder]

Correction. It's an 83 [emoji1]

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[matt.probuilder]

Today I finished a couple of my updates to the boat. I installed two Apex 38ah 12 volt batteries running at 24 volts. They are running my MotorGuide 82 lb thrust digital trolling motor. Yes I just said 82 lbs of trolling motor thrust will be yankin this boat around the lake [emoji48].

I also installed a Lawrence fish finder. I mounted the transducer on the bottom of the trolling motor. I connected the batteries using 8 gauge wire and copper terminal hoops.

Upcoming projects include a voltage meter and switches as well as hard wiring in navigation lights which are currently being operated battery power. They run on C cell batteries if I'm not mistaken. Additionally I'm going to add a bilge pump although the boat itself doesn't leak so it's probably not necessarily needed at this point.

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[Weldorthemagnificent]

Nice boat and a good deal I'd say. Mine doesn't leak either but I have a pump. It's nice to have if you leave it docked or on shore for a couple days and it rains.


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[Stumpalump]

Nice boat and a good deal I'd say. Mine doesn't leak either but I have a pump. It's nice to have if you leave it docked or on shore for a couple days and it rains.


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Stuff the bow running from a storm or for a hundred other reasons, pumps have saved my day or at least let me continue without hauling an extra hundred pounds of water with me.

 

[matt.probuilder]

Yeah that's some good points I didn't really consider. I'm just going to put a cheap one in there on a switch nothing fancy. I think they're like 25 bucks on eBay if I'm not mistaken.

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[Stumpalump]

Yeah that's some good points I didn't really consider. I'm just going to put a cheap one in there on a switch nothing fancy. I think they're like 25 bucks on eBay if I'm not mistaken.

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There are enough things to ruin a good day on the water so for $25 it's one less thing. Oh I forgot I love your boat. 14-16' tiller with that kind of HP is such a great size.

 

[matt.probuilder]

Thanks. It's a great little boat. I'm actually out here on the lake as we speak.

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[Weldorthemagnificent]

Pump saved my bacon once when I forgot to put the plug in. Lol. And if you've never forgotten, keep boating, maybe you won't ever forget..


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[DaleH]

Agreed - nice rig! The proverbial "pickup truck" of boats. And a bilge pump is cheap life insurance to boot, so I'm really glad you made the choice to add a pump!

Recall small boats are all about trim and available power ... and fresh water weighs 8.3-pounds a gallon. One tin boat poster here hit a rock a year or two ago, opening a 1" hole in it and they were amaazed at how much and how fast water came in. See here: https://www.forum.tinboats.net/viewtopic.php?f=5&t=38447&hilit=water+bilge+pump+hole

Now these are the only specs I can quote - for the water pressure 1' below the surface, so while they really apply to a bigger boat, the point is startling! It is the weight of the water that swamps the boat!

A 2" hole only 1' below the waterline will let in ~78-gallons per minute. That's 4680 gallons per hour! Plus, at the typical water weights - that's:

~8.34 pounds per gallon for saltwater, that is 651 POUNDS per MINUTE being added to the boat.

~8.5 pounds per gallon for saltwater, that is 663 POUNDS per MINUTE being added to the boat. And in really salty areas, w/ high mineral content, that weight per gallon can be up to 10-pounds per gallon!

Regardless of where you boat ... holy $#@& that's a ton of weight!

 

[matt.probuilder]

That's absolutely incredible. So basically you can sink a boat in the matter of 3 or 4 minutes. Maybe I'll spend that extra hundred bucks to buy the high flow pump instead.... I can just imagine scooting along the lake trying to get back to the dock and there's a huge fire hydrant of water shooting out of the back trying to keep it above water.

It's funny you say that, the previous owner actually forgot to put the plug in once I guess. He told me he got out onto the lake and looked down and water was going into his boot so he had to hurry up and Beach it on the shore to keep it from going under. For the record he also told me the old wise tale about going fast enough the water will stop coming in the boat is incorrect LOL.

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