Originally Posted by smarkinson

Whacky idea.

I had to read it a few times to even understand what was going on. So you have a short little 3 inch tube with a valve on it, and you pump up that little tube? And that goes into the original tube that you have cut?

Where does the valve go without it cutting anything?

How do you even get the tyre back on when you have a half inflated bulge inside?

How do you get the original tube to stay in place as you wrestle the tyre back on?

How do you create a seal between the two tubes when all it will take is one itsy bitsy little gap for the whole idea to fail, remember you're dealing with at least 40 pounds of pressure per square inch here, that's a lot of pressure that you're asking friction to hold.

Why don't you just use tubeless?

Anyway, it's an experiment you can do yourself if you are really interested. Get a couple of tubes. Cut the first one up and tie off the ends to make your mini tube and then cut you second one and off you go.

Make a video, I need a good laugh.