Weather Ballon with Camera/GPS payload. 1x600g or 2x600g balloon for lift?

AI Thread Summary
A user is planning to launch a 900g Kaymount weather balloon with a payload that includes a GPS tracker and cameras, aiming for an altitude of 100,000 feet. They purchased two 600g balloons and are considering whether to inflate both for increased lift and ascent speed or if one balloon is sufficient. The payload weight is estimated to be under 5 pounds, and they will determine the required helium once all materials arrive. Other participants suggest reviewing previous threads for advice on high-altitude balloon experiments, including considerations for parachutes and temperature effects. The launch is planned for Thanksgiving break, with intentions to share photos and videos afterward.
Rbai63
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Hi I am starting a project and will be inflating a 900g Kaymount weather balloon with a payload that consists of a styrofoam box inside of that will be a SPOT personal gps tracker, Camera and a Flip HD camcorder. I purchased 2 of the 600g balloons. I will do this by filling one up and attatching 30-40Ft of string to one end and attaching it to the top of the other balloon. Would it be a good idea to inflate both for the 1 payload to get higher in the air and a faster accent rate, or is one 900g enough? I know some people use 1200g balloons. I am shooting for 100,000 Ft, after I receive all materials in the mail I will figure out how much helium I will need for the payload because I am not sure what the weight will be for it yet I am guessing <5lbs.

Thanks

I will try to get this launched over Thanksgiving break, will upload photos and videos.
 
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Rbai63 said:
Hi I am starting a project and will be inflating a 900g Kaymount weather balloon with a payload that consists of a styrofoam box inside of that will be a SPOT personal gps tracker, Camera and a Flip HD camcorder. I purchased 2 of the 600g balloons. I will do this by filling one up and attatching 30-40Ft of string to one end and attaching it to the top of the other balloon. Would it be a good idea to inflate both for the 1 payload to get higher in the air and a faster accent rate, or is one 900g enough? I know some people use 1200g balloons. I am shooting for 100,000 Ft, after I receive all materials in the mail I will figure out how much helium I will need for the payload because I am not sure what the weight will be for it yet I am guessing <5lbs.

Thanks

I will try to get this launched over Thanksgiving break, will upload photos and videos.


Welcome to the PF.

Be sure to read this recent thread about high-altitude balloon experiments. It has some good advice about parachutes, low temperatures, and some legal issues. Also has a link to a cool video.
 
berkeman said:
Welcome to the PF.

Be sure to read this recent thread about high-altitude balloon experiments. It has some good advice about parachutes, low temperatures, and some legal issues. Also has a link to a cool video.

Which recent thread was that, Berkeman?
 

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