It's not the fault of the tube. It's excessive tire pressure. 60psi for a
50mm tire is way too high. I would not use more than 40psi. At 175lbs, I'd
run them at about 35psi on paved roads, and 30 psi on dirt.
On Fri, Jan 13, 2017 at 9:10 AM, Kevin Lindsey <lindsey.ke...@gmail.com>
> So I inflated the 50mm Schwalbe Marathons on my Hunq to 60 psi (rear) and
> 40 psi (front) last night and wheeled it into the kitchen in preparation
> for what would have been my morning commute. About twenty minutes later,
> there was a deafening "bang" from the kitchen; I honestly thought a handgun
> had gone off or something had detonated in the microwave, and my left ear
> was ringing for a half hour afterward. Long story short, the Schwalbe
> inner tube on my rear tire had popped, shredded, and actually blew the tire
> off the rim; anyone who uses Marathons knows how hard it is to get those
> things on the rim in the first place, and it's sobering to think of how
> much energy must have been released to unseat one. Fortunately, aside from
> screwing up my commute and throwing my dogs' digestive systems into
> reverse, however, there was no other apparent damage.
> Anyone know generally what causes a tube to blow up like that? It wasn't
> over-inflated, probably only had fifty or sixty miles on it, was the
> correct size for the tire, and generally should have lasted for several
> hundred miles. My son has had this problem with some Specialized tubes
> recently, but the Schwalbe products are generally of a higher quality, but
> now I'm wondering whether there's a QC issue at the factories in, I assume,
> Any thoughts would be appreciated.
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