Originally Posted by Rainman229
Not enough volume in an ion to pop 2 balls out. My design has around 2 cubic inches of air in the valve chamber. When an ion has about 1 cu inch.
What about putting two ions side by side? I know it'd be somewhat wider than with a custom valve, but it could make the build significantly easier. Plus if you did the over under version, width wouldn't matter as much, since then it would be a matter of how tall you'd want it to be.