Online Community of Zenith Builders and Flyers
I just finished installing tubes in mine. Everything was fine until it wasnt. Right main went flat, twice ,so I ordered the tubes from Matco. and put it in the right main only. Two weeks and again the right main is flat along with the nosewheel. ( insert anger here). turns out the right main was pinched, and the O ring in the nosewheel was broken in half. For me, tube was the way to go even though I have talked alot of people who have not had any problems with the tubeless installation. Mine had been on the wheels for a year before the problems and only after 20 hours on the airframe did the problems come up. No real hard landings either. :).
On mine I (contrary to the directions) bolted the wheel halves together first. Then I put some liquid soap on the o-ring just to help it be a little slippery, and stretched it over the rim carefully. Once past the rim it snapped into place in the crevasse of the wheel right where it belonged. My tires have been mounted for about a year and a half (and now with about 50 hours flying time on them) and still no leakage or problems. They hold air at least as well as my car tires do. A little liquid soap diluted with water on the tire bead before installation makes the tire go on easier, too.
Good luck, and keep building; it's worth it!
I heated up the O ring in hot water and with a little Vaseline I slipped it over the hub. Its been a almost a year in the garage with no evident leaks.