Frank Leake wrote:
Got my new front tire and just put it on but it doesn't look
right. I ordered a 26 X 1.50, same that was on it before, but
the area around the stem doesn't seat all the way.
Try as I did, it just wouldn't go down all the way. See picture.
http://imgplace.com/image/view/30480...e0bc6a503b3715
Any advise... I also got a 26 X 1 3/4 tire just in case the rim
was for this kind of tire.
You got the Loopy Lou's! I did that once and didn't notice, 'twas a
very odd sensation cycling on it.
Advice:
This is common with most inner tubes. The way to do avoid the
problem is to push the valve stem up into the tire after mounting
it so that it can descend with its attachment pad curved to fit
between tire casing walls instead of having the tire crimping the
tube at either side and sitting on top of the reinforcement. That
crimp can cause a puncture in a short distance.
Presta valves are slenderer with a thinner attachment pad making
them are easier to install.
True, but it isn't hard to get the same effect away from the valve.
That is not a common problem except with tubes that are too large in
cross section. The effect you showed will not seat by itself because
the tube is under the tire bead and there is no force trying to
extract it. As I said, that is a pinch flat in the making and will
chafe through with use.
I've never had it at the valve, cos I'm anal with valve seating,
then I work around the tyre, inflate and fit. Then I think "This
can't be right!". Seen other people do it as well. The last time
it happened the tyre seated itself after about 5 miles.
The only way to "never have it at the valve" is to push the valve into
the mounted tire so that it is above the narrow section between the
tire beads and then let it descend to its proper position. It is all
rubber and can form into that space.
Bit of an ad for rim lube or whatever it's called.
Not at all. As I said, there is no force trying to pull the tube out
from under the tire bead so lubricant won't help. Develop a better
routine for tire mounting.
Jobst Brandt