water tanks ?

[offshore1987]

Hi peeps i was just sat here lookin at graupners model book, while thinking of me tito neri and was just thinkin about if there was room to maybe put like 2 aircraft tanks in to weight the boat down ( by fillin them with lake water )

i wish i had of come up with this idear when first buildin the boat :(

has anyone done this in a model boat boat before?

all the best

[toesup]

Hi peeps i was just sat here lookin at graupners model book, while thinking of me tito neri and was just thinkin about if there was room to maybe put like 2 aircraft tanks in to weight the boat down ( by fillin them with lake water )

i wish i had of come up with this idear when first buildin the boat :(

has anyone done this in a model boat boat before?

all the best

Its better to put batteries in a boat... more run time..

[CaptLee]

Been using water tanks in my barges for a long time, works gooood. My eyeball engineering thinks it would be a bit dicey to get enough on board to do any good in the Tito. That toy boat with the fire tower has on onboard and every time we take it out of the water it tinkles on our shoes. Works OK in that case though. Like Toes says I like more battery as ballast.

[offshore1987]

Hmm good points, i dont need any more batts in there though got 2 12v 7amp batts in there and a load of lead lol :D and putin even more in would be a pain to carry it anywhere :(

even with the 2x 12v it stills needs 2x 6v 10amp batts to get her down to the water level, just got me thinkin maybe 2 water tanks at the sides low down might be anoth to sink her down when at the lake

p.s il probs have to carry this about 2/3 of a mile to the lake and back lol so saving weight would be ace :D

[Aerominded]

Removable lead ingots might be your best bet then- keep the weight low in the hull... :)

[W.L Upshaw]

Unless you put baffles in the tanks you can get freewater sloshing about in the tanks that can cause problems with running your model.

And think of this, whatever is in the water that you run your model in will also be in your model.

[offshore1987]

salt water so will mess the tug up anyways hehe lol

lead seems cool though its lugin more about, going to have alook at some and see if i can somehow get the right shape tanks, got a perfect hole on either side of the tug for some tanks :)

just not sure if the tanks will hold anoth water

my main thinkin is 2 dry tanks will weigh about 2 ponds tops, and lead will be what ever 2x 6v 10amp lead acid batts weigh :rolleyes:

if it works then il add some pics and what not to aid others :)

all the best

[Mike1945]

You might try free flooding tanks made as part of the hull, as long as their top is below the water line they should do the job without adding transport weight. A small hole in the bottom and a vent tube well above the water line.

Mike

[yacht boy]

Offshore,
This might help with your ruminations.
Pounds
Cubic cm. 0.002205
Cubic inch 0.036127
Liter 2.204684
Gallon 8.345404
Cubic foot 62.42796
A single 12v 7Ah battery is about 6 pounds.
So, could you get the equivalent of 2 quart oil bottles in each side below the waterline?
I run 3 7Ah batteries and some lead in my Tito. If I wasn't in the middle of a new build I might try water ballast in it. :rolleyes:
I will be using water to make up the weight in my new build.

[large mike]

You could also try using small pumps to fill, then empty the tanks at the lake. Several of the model Great Lakes boats use this method. Check them out at www.greatlakesmodeling.com and see if anything they do would be helpful to you.
Large Mike