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Old 07-03-20, 12:01 PM
Join Date: Jul 2019
Location: Yuba City CA
Posts: 25

Bikes: BMZ Performance Touring

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Can't find the leak

Feeling dumb about this. Been fixing flats tires for 50+ years but this one isn't getting resolved. Recent 90's Conley MTB. Very clean. Deore components. Came with very recent Kenda tubes and Komfort tires. Am losing 2psi a day out of the rear. Pumped the wheel to 65 psi and submerged it in 6" of water in my laundry utility sink. Don't see any bubbles. Watched it for quite a while. Pulled the tube and pumped it up to about twice the tire size. Not a bubble. I'd like to pump the tube up more. Is there a general rule on how big an unconfined tube can be safely expanded?
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