26" method from a few years ago
i tried it last year but didnt have access to an airline and the track pump doesnt flow enough air quickly enough to create a seal so i ended up in a shop covered in sealer and cut tubes
the co2 canister pumps will have enough pressure to do it if your worried
he doesnt say but it needs to be a quality tyre as the method relies on the bead
how long until the next "new" thing to hit bmx is "tubs"