What he said. If you've never done this before, caution can't be stressed enough. Tube tires need to be "exercised" a few times to get all the wrinkles out before final inflation. 3-4 lengths of 3/8th log chain and a high strength grab hook around the assembly will slow or stop it from coming apart if the lip doesn't catch properly. Then inflate to 20 lbs and let ALL the air out. Then inflate to 40 lbs and let it go completely out again. This process gets the tube in proper position. Final pressure can then be set.
