Adidas Basketball + H2O = Cheap 8kg Medicine Ball (with a tiny bit of effort) £4.99 Argos
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Adidas Basketball + H2O = Cheap 8kg Medicine Ball (with a tiny bit of effort) £4.99 Argos

13
Found 28th Jun 2010
OK so it's more of a tip than a deal,but when filled with water it becomes a 8kg medicine ball for a fiver! Usually around the £20 mark

Looking online most how-to's suggest filling with sand but that seems a tad more fiddly. Just pump up the basketball under water and you have saved yourself some money. Took me about half an hour to pump it up with water. Great grip on it too.

How to with sand: mikesgym.org/art…pdf

Some exercises: medicineballs.com/edu…pdf

13 Comments

Bet the kids cant kick that next door:). There goes the greenhouse:x
:thumbsup:

This is like saying 'get a carrier bag, put a couple of bricks in it, instant weight lifting for free'.

Bonkers!

woodstock;8935709

This is like saying 'get a carrier bag, put a couple of bricks in it, … This is like saying 'get a carrier bag, put a couple of bricks in it, instant weight lifting for free'.Bonkers!



No, because his suggestion is at least plausible. You're bonkers! :prop:

Dragons den anybody :-D

How do you stop the water from leaking?

greatkingbowser;8936120

How do you stop the water from leaking?



air tight > water tight.

Doh. Makes sense!

Would love to take that downstairs to the local yobs that always play basketball outside my building, lob it at one of their heads and say "Catch".
More than A little tempting...

8kg is 8litres of water. Are you sure its 8kg?

Original Poster

Weighed in on my home scales at 7.9 kg, feels about that. I'm going to try it on a smaller rubber ball too. No sign of any leaks overnight. I used a mini football pump with all plastic parts, apart from the needle. I reckon its just like retail versions at a fraction of the cost. Let me know how you get on if anyone tries it, especially if you're thinking of filling with sand.

Finlab;8937296

8kg is 8litres of water. Are you sure its 8kg?



Density of water is 1000kg/ cubic meter
1 litre is 1 cubic decimeter which is 0.001 cubic meters

So 8litres is 0.008 cubic meters which is 1000 kg/cubic meter * 0.008 cubic meters = 8kg

So yes 8litres is 8kg ... 1litre of water is 1kg give or take a little as it's not pure water

Original Poster

Radius of BB just over 12cm, volume just under 8L

Original Poster

Word of warning...my ball burst...ouch! Don't try and bounce it on concrete whilst it's full of water...8 litres is a lot.
On the bright side I've now got a shell into which I've put 10kg of playsand, just need to seal it and tape round all over and job done. I wouldn't buy a new ball to do it mind, but if you have an old BB...
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