Ama is learning to blow 260's by mouth, which is quite a challenge. What has her perplexed is that they don't look that big, but take several breaths to fully inflate. So she wants to visualize the air volume of a 260 using a common round balloons. She has a device that lets her fully inflate the 260, then open a valve to connect it to an uninflated Q9. Due to the much lower pressure requirement of the Q9, the 260 will fill the 9" round on its own, leaving it for her to just squeeze the last bit of air by hand for a full transfer. It takes her a few tries to get it right, but once she does,...

Ama is learning to blow 260's by mouth, which is quite a challenge. What has her perplexed is that they don't look that big, but take several breaths to fully inflate. So she wants to visualize the air volume of a 260 using a common round balloons. She has a device that lets her fully inflate the 260, then open a valve to connect it to an uninflated Q9. Due to the much lower pressure requirement of the Q9, the 260 will fill the 9" round on its own, leaving it for her to just squeeze the last bit of air by hand for a full transfer. It takes her a few tries to get it right, but once she does, she produces another Q9, and puts as big a breath as she can into it, so she can compare the two. Looks like she definitely has the lung capacity to inflate a 260 in one breath - now to just keep trying until she can do it in practice!