For rocketry without legislation, try filling a 2L soft drink container
with water and compressed air and launching it. The current record for a
water rocket appears to  be ~1000 ft
for a two stage model carrying a commercial rocketry altimeter. Check
out the following web site:
        http://www.geocities.com/CapeCanaveral/Lab/5402/

PIC related:

I am building a PIC based altimeter to measure the heights of our water
rockets.

stan

>From:
>       "Peter L. Peres" <plp@ACTCOM.CO.IL>
>
9/6/98 2:06 AM
>
>Subject:
>        Re: (OT) Air pressure sensor for hang gliding vario
>
>
>
>>On Sat, 5 Sep 1998, William Chops Westfield wrote:
>>
>>     > 3. I have a friend into model rockets - how high do they get?
>>
>>     Almost everything that you can build @ home, including SMT, is too heavy
>>     to ride on all but the heaviest model rockets. However, the apogee can be
>>     read by a very small Tx that is actuated by a G-loss sensor (a switch tha
t
>>     closes or opens when there is no gravity). The triangulation measurement
>>     relies on three ground stations. Contact your local Armed Forces for
>>     suitable equipment ;)
>>
>> Huh?  Nonsense.  "low power" model rockets (motors up to a "D" - 20Ns) can
>-snip-
>
>Ok, there is a small difference in the legislation between our respective
>countries apparently ;) I wonder what exactly an Israeli border policeman
>would do to you just before he'd put you in jail for trying to import an A
>size motor... not to mention them catching you with the thing boarding a
>plane in the 1st place. Yes, I know it's illegal to carry any sort of
>explosive or inflammable in the cabin. I wonder how the Air Force guys get
>a waiver all the time ?
>
>FYI I know of NO hobby shop in this COUNTRY selling model rockets of ANY
>size off the shelf, nor engines, nor materials to make them. Meanwhile,
>nearly everyone between 17 and 21 of age runs about on mainstreet with
>his/her service weapon and nothing bad ever happens.
>
>Peter
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