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Your pressures were too low and tyres not robust enough...
Not sure about tyres not robust enough, cheap Conti mtb tyres so the heaviest/least supple casing I'd have thought.
As for pressure, yeah, lack thereof was definitely to blame for the pinches but isn't that why you run tubeless in the first place? Now that I'm back running tubes I don't feel I've had to increase pressures massively.
I dunno, maybe it was a combination of my weight, my bike being completely rigid and my riding style being umm...unsympathetic(?) that led to my issues or just makes it less of a benefit to me. My mtb is as far from weight weeny as you can get so I guess the weight savings weren't noticeable/appreciated, especially since I was adding the weight of a few wraps of tape and a split 20" tube anyway.
Also, I kinda figured that since I wasn't confident enough in the sealants ability to keep me rolling and was still carrying spare tube(s) when riding then I may as well just have tubes in the tyres all the time and save the faff of dealing with the mess of sealant.
M_V-
Not sure about tyres not robust enough, cheap Conti mtb tyres so the heaviest/least supple casing I'd have thought.
The tubeless specific stuff has reinforced sidewalls to prevent pinch flats. I've blunt clattered TS Racing Ralphs into curbsides and rocks, felt / heard the rim - and the tyre has been fine. Non TS tyres have been killed instantly in the same circumstances.
Howard
This is what was happening to me...in cross. Your pressures were too low and tyres not robust enough I'd imagine.
Stans reckon their gloop is environmentally OK. The times in cross where I've bothered to fit a tube to get home there's been so little sealant left I haven't had to do anything with it.
The new Schwalbe TR stuff goes up like a clincher, real easy.