PET bottle internal water flowing

[Water Rocket Expert]

does anyone know how to make a more effiecient way to move the water through the rocket. Like when I fill it up the water is filled past the first section of bottles and the tiny neck I thought might be restricting it's flow Through there. Is that true? Are there any ways to fix that problem?

[WRA2]

does anyone know how to make a more effiecient way to move the water through the rocket. Like when I fill it up the water is filled past the first section of bottles and the tiny neck I thought might be restricting it's flow Through there. Is that true? Are there any ways to fix that problem?

Splicing!

[Water Rocket Expert]

I mean the coupleing problem. Do you mean making one huge bottle out of the midsections of other bottles?

[WRA2]

I mean the coupleing problem. Do you mean making one huge bottle out of the midsections of other bottles?

The most efficient way is to splice the entire rocket and not use any of the couplers. Any coupler is a "choke point" for either air or water or both.

[Water Rocket Expert]

Thanks! Good idea!