A while back, there were some guys on this forum talking about using tubular tires inside of clinchers as tubes. Theory would be that the ride would be better and, more importantly, you would never, ever get a flat. So I found me an old 21mm tubular and 28mm clincher and tried to make it work, but I couldn't get the clincher bead seated on the rim over the tubular. Is there some special techique I should know about? Or am I just wasting my time? Thanks

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Whow! That's a pretty damn nice garage door!

there isn't any ride enhancements with this system, its just heavy as hell and pretty much totally resistant to flats. If you train on a wheel like that come race time your other wheels will feel super fast. I thnk you just need a narrower tubular, like a 20mm.

If you want flat protection for your training wheel I think you better use Specialized Armadillo tires or so, maybe with an extra anti-puncture strip between the tire and the tube.

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Whow! That's a pretty damn nice garage door!

try Panaracer Flat Aways, made from ballistic Kevlar, much lighter than Mr. Tuffys and very, very tough. I have over a thousand miles on a set of tires with not one flat. The tread is sliced up from riding over glass and gravel but no penetrations.

I tried poking a barbeque fork through the stuff and I couldn't do it.