moose35
Well-Known Member
User error
Standing bike pumps
- Thread starter rick81721
- Start date
User error
rick81721
Lothar
Worse - stupid user not looking closely at the fittings. Turns out each side has a threaded cap on - and both were loose. Tightened them up and it stays on the smooth stem perfectly. Ooops!
man . . . . . . this whole thread was a waste . . .
rick81721
Lothar
But I did not burn it so I have that going for me, which is nice ?
rick81721
Lothar
As the world turns... yet another twist to this tale. Went into the garage to top off the tires and the front tube blew out again: ?
Two scenarios here: either I have multiple defective tubes which are too weak around the junction of the stem and tube, or my POS designed pump is exerting too much force getting the valve on the stem. My vote is the latter.
Two scenarios here: either I have multiple defective tubes which are too weak around the junction of the stem and tube, or my POS designed pump is exerting too much force getting the valve on the stem. My vote is the latter.
my vote is also for the latter
qclabrat
Well-Known Member
what tubes are you using? I bought a bunch of tubes online like the ones you have in your pic with the smooth valves, vs threaded, and they were all garbage. They constantly flatted on my road bike as well. Why haven't you gone to tubeless?
rick81721
Lothar
These are continental conti race tubes. Yeah I gotta try tubeless, will see if the local Florida house call bike guy can do it.
There are reports of counterfeit contitubes out there, is conti printed on the tube anywhere?? Did you happen to buy one of the mutlipacks
On amazon?? If not, take them back to the shop Where you bought them.
rick81721
Lothar
then maybe you have the collar/sleeve/bushing in the pump head too tight, and it needs to be a hair looser so it goes on nicely and still grabs
Those look legit. Return them.
rick81721
Lothar
I'll fiddle with it a little more before it hits the backyard fire-pit. Even when it pops off under pumping, it still requires a pretty hard push to seat the valve.
It’s the pump. Really
Why do you run race tubes when you don't race?
My point is more that 'race' stuff is typically more fragile because lighter. He flats on the reg.
