Author Topic: Ballasting A Model  (Read 376 times)

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Offline Railbob

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Ballasting A Model
« on: 11 January 2021, 14:36:57 »
Hi everyone, I'm looking for some tips on ballasting HMS Javelin. I've used lengths of lead solder cut into roughly 100g amounts. I've managed to get her to the correct waterline but she's very tender and has a tendency to list in both directions. Would it be better to used sheet lead so that the weight is concentrated as low as possible to enhance stability ?

Offline Pegasus

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Re: Ballasting A Model
« Reply #1 on: 11 January 2021, 15:59:50 »
Sheet lead the type used on roofs ideal. Depending on the model I like to spread it out some at the bow some at the stern and some midship. The best Ballast I have used was Brass Ingots I found in a cupboard at the club these were excellent. Remember all ballast should be on the keel. Good luck sometimes its just trial and error. Even the real ships especially Destroyers had problems with ballast.

Offline Railbob

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Re: Ballasting A Model
« Reply #2 on: 11 January 2021, 16:57:23 »
I've had a look at sheet lead and it's a bit expensive due to the amount I'd need to buy but I've had a thought , what about wheel balancing weights, they're self adhesive and can be cut to give a good balance, sounds okay?

Offline Pegasus

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Re: Ballasting A Model
« Reply #3 on: 11 January 2021, 20:01:18 »
I got my lead sheet from a friend who had replaced flashing on his house extension he gave a bit 9 x 12 inch this will do at least three ships. One more hint when fitting ballast use rapid two pack like Araldite it holds it better than any other adhesive use this with your balance weights.

Offline Railbob

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Re: Ballasting A Model
« Reply #4 on: 12 January 2021, 21:39:17 »
Thanks for your help so far Pegasus. In your opinion would it be better to have the ballast as low and as central as possible ? I've managed to cut some solder strips into 100g "Bars" and I intend to place them right on the keel centreline. I also weighed my model and found it to be around 264g light which might have added to the instability , so I've added the extra and will test tomorrow .

Offline MimmoC

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Re: Ballasting A Model
« Reply #5 on: 13 January 2021, 05:55:46 »
Prova con i pesi delle tute dei sub, costano poco e vanno bene anche a pezzi

Offline Charles Hart

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Re: Ballasting A Model
« Reply #6 on: 13 January 2021, 10:50:02 »
Hi – l use lead shot, the type found in shotgun cartridges – once the correct level is determined l pour resin over the shot which self levels.

Offline Kiyoshi Sekiguchi

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Re: Ballasting A Model
« Reply #7 on: 13 January 2021, 11:30:04 »
Hi Railbob;

Here are the pics of my HMS Fencer under testing and checking the balance
before and after the launching day.
1;I purchased lead ingots. each 2.4kgs and lower is the better for good balance.
2;And covered with film for safety against harmful lead
3;I also applied non-slip rubber to refrain from moving inside the hull when sailing.
  Moving of ballast inside the hull will possibly result in fatal to the ship at high
  percentage.!! :'(
4;Inside the hull. An aircraft carrier is normally top-heavy from its configuration.
  Therefore, securing both good balance and stability are fatally important to
  sail,especially on the lake where I have been enjoying to sail the ship many times.
5/7;Under testing how she behaves herself in the swimming pool.! ;D
      As a result,she has become so clever by my leadership ! ::DD
8;On the water on the day of launching, she behaved like a elegant lady before a
  maiden run.! 
                Do hope your well-balanced sailing on the water as you wish.!!! :grin1:
 

« Last Edit: 13 January 2021, 11:37:38 by Kiyoshi Sekiguchi »

Offline Railbob

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Re: Ballasting A Model
« Reply #8 on: 13 January 2021, 15:11:29 »
Thanks everyone   ^^^ Took my time and she’s sitting very nicely on an even keel, now just to glue everything into place and hopefully on Friday take her to Roulen Glen pond.

Pegasus, if the weather is good I’ll probably be there around 11ish if you fancy popping by?
« Last Edit: 13 January 2021, 15:14:54 by Railbob »

Offline Pegasus

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Re: Ballasting A Model
« Reply #9 on: 14 January 2021, 10:45:11 »
I would have like to come to Rouken Glen but the wife has a dental appointment at that time. so good luck hope the weather improves and the pond is not frozen over the las cold snap saw the pond our club uses at Strathaven Park hosting Ice hockey ::DD

Offline Railbob

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Re: Ballasting A Model
« Reply #10 on: 14 January 2021, 12:04:52 »
Hi Pegasus, well I think the snow has put the brakes on my plan, ah well just have to wait until better weather.