Originally Posted by PWRDbyTRD
I was thinking 4 or 8. you spin the wheel around too quick and the goo will still be in the stem.
But the point of 4 or 8 is that if goo is in the stem, it can drain out. It seems possible for me for goo to be in there no matter where you put it. I don't know how much volume it takes up, but here is one example:
Suppose when the goo is all at the bottom, it has enough volume to completely fill that part of the tube (that is, contacting the inner part of the tube as well as the outer part at the bottom). Then you rotate the tire - the part that was touching the inner part of the tube begins to drain off, but possibly it drains into the stem first. You then stop the wheel when the step is at 12 o'clock. How can the goo get out of the stem?
Even if there isn't enough goo to contact the inner part normally, when you stop riding, does all the slime roll down the outer part of the tube to the bottom - or may some small amount sometimes drip down from the top area, falling on the inner section of the tube? If that happens, it then drains down that section until it reaches bottom, but at any point it may hit the stem first.
I don't actually know if any of this is probably, but it seems it is at least possible, so you need a way for it to drain out if it does happen.