Okay so i have standard "Bmx U" brakes.
I've noticed the inner housing is passing the little stopper that is on the housing. (They were all new housings and this is my second housing this month.)
Is my brake lever the problem?
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1I don't think that's a hose.– Daniel R HicksJul 18, 2020 at 0:23
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2OP: Welcome to the bikes SE! Daniel isn’t trying to be persnickety here: hydraulic disc brakes are actuated by fluid, which flows through hydraulic hose. Hence, the title got corrected to enable people to search for this more easily.– Weiwen NgJul 18, 2020 at 17:28
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1 Answer
Whatever housing stop contained the pictured housing end has a hole that's too big.
Most BMX brake levers have barrel adjusters. If this is true for yours, and as you indicate this occurred at the brake lever end, replace the barrel adjuster. You need to get the right size, and there are several possibilities. Real BMX shops tend to have all the sizes, but replacing barrel adjusters all the time is less of a thing elsewhere so not every bike shop will necessarily have what you need.
If the lever doesn't have a barrel adjuster, as in certain fancy minimalist levers, you might need to replace the brake lever.
If a housing stop braze-on is allowing this to happen, the expedient fix is going to depend on where on the frame it is, what type it is, and whether persuading it back into shape with pliers seems to be a viable option. If it's a normal split housing stop then just reaming it out completely and using it to contain an M5 or M6 barrel adjuster to act as a housing stop may be an option.
answered Jul 18, 2020 at 1:43
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Another fix might be a really small but thick washer in the braze-on, so its held in by the ferrule. A 1.5 to 2mm hole for the cable and only the cable to pass through should mitigate the problem.– Criggie ♦Feb 8, 2021 at 21:47