Exploding inner tubes

Posted on Sun 16th, May 2021

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• #26

Squaredisk in reply to @alocalboy

I usually start seating the tyre with valve area, but maybe that isn't the last part you are showing in the pic.
• #27

alocalboy in reply to @Squaredisk

Same, that picture was taken after I deflated the tire as it was coming off the rim, the other times it slipped off was not in correspondence of the valve..
• #28

DuffBeer

I’ve had exactly this problem with Veloflex tyres and Vredestein latex tubes. Mine were all blowing at about 90psi. It turned out the plastic cover on my track pump had taken a small knock and was causing friction on the needle. When I was trying to get to 110psi (23mm tyres on 19mm rims) the needle would struggle to move once it got to 70psi. What was actually happening was I was pumping well past what the tube was capable of and just detonating it.
• #29

alocalboy in reply to @DuffBeer

Good insight, I will check it out, with my other bikes my track pump seems to work just fine, nevertheless it is something worth considering

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