We did the same except I think we used the zinc from old flashlight batteries and the acid out an old car battery. I don't know how we made it without seat belts or bike helments but with plenty of lead base paint for all. In the summer every kid in the area would line up on their bikes and wait for the DDT truck to come through spraying for mosquitos so we could ride into the fog.

>When I was a kid, about 452 years ago, we used to make our own hydrogen for use in balloons. We'd use an A&W root beer gallon jug to disolve household lye in water, then we'd drop aluminum into the mix and put the balloon over the opening of the jug. It worked fine but the bottle became a bit hot after a while. BTW the mixture might disolve your hand if you get some on it. And that was just the simple stuff we did ;-)
>
>>What do you think of this?
>>http://news.uns.purdue.edu/x/2007a/070515WoodallHydrogen.html
>>Sammie
>>
>>>Good luck finding a hyrdogen powered car on your road in the next 10 years...
>>>
>>>+++ Rick ---
>>>
>>>>> these blasts can level large areas upwards of 1Km blast radius.
>>>>
>>>>I'll have to remember that if I ever see a hydrogen powered car on fire!!
>>>>
>>>>><snip> All that gas under pressure? What about accidents? Kaboom!
>>>>>
>>>>>Hydrogen is pretty safe, if the pressure vessel is punctured it vents to atmosphere and being lighter than air leaves the area quickly, whereas petrol vapour being heavier than air pools on the ground waiting for an ignition source.
>>>>>
>>>>>The only problem with hydrogen is confined spaces where it can mix to the right proportions and cause a major explosion.
>>>>>
>>>>>Also with any liquified gas like LPG or Hydrogen you have the risk of a BLEVE (Boiling Liquid Expanding Vapour Explosion) if you have flame inpingment on the pressure vessel which causes the vessel to fail. Another name for BLEVE is "Blast Leveling Everything Very Effectively", these blasts can level large areas upwards of 1Km blast radius.