On 2017-01-17 17:51, John B. wrote:
On Tue, 17 Jan 2017 10:27:27 -0500, Frank Krygowski
wrote:

On 1/16/2017 11:10 PM, Sir Ridesalot wrote:
On Monday, January 16, 2017 at 10:28:41 PM UTC-5, jbeattie wrote:
On Monday, January 16, 2017 at 4:23:53 PM UTC-8, Joerg wrote:
On 2017-01-16 13:39, Sir Ridesalot wrote:
On Monday, January 16, 2017 at 2:39:18 PM UTC-5, jbeattie wrote:
On Monday, January 16, 2017 at 11:03:05 AM UTC-8, Joerg wrote:
On 2017-01-16 10:43, David Scheidt wrote:
Joerg wrote:

:Yup. Standard bicycle tubes are usually junk. Would you accept
it if you :had to pump up the tires of your car every two
weeks? Yet most cyclists :think this is "normal".

Automotive tires have a much lower ratio of surface area to
volume than bike tires. They're also run a lower pressure, for
the most part.


Truck tires are often operated around 50psi or higher. Like my
MTB tires are.

A truck tire weights as a much as TWO UCI minimum race bikes -- or
one DH bike. Now throw in the rim. You have peculiar expectations
for bicycles. You're theoretically perfect bike would weigh about
250lbs.

-- Jay Beattie.

I've said it before and I'll say it again. What Joerg's wants in a
bicycle are would be met by a 250cc dirt-motorcycle converted to
pedal power and the engine removed.

I find it astounding that so many others who ride in very harsh
conditions do NOT have the breakages or other problems that Joerg
does.


According to several bicycle shop owners they do. Many said that two
factors allowed them to survive as a business:

1. Mountain bikers breaking stuff all the time.

2. Department store bike buyers who needed help and found that the store
that sold their bikes was less than helpful.

Unlike cars, which never need to be fixed, and that's why there are no auto repair shops. http://tinyurl.com/jba5fgb

-- Jay Beattie.

Read Joerg's post from over the years and you'll see that Joerg takes great delight in complaining. Joerg does not want/need a bicycle - he needs/wants a pedal powered motorcycle.

For his bicycle he should just buy solid rubber tires and be done with every needing to fix a flat or pump them up.

Seriously, Joerg, why are you _not_ using solid tires? (I mean, except
for the general principle that nothing ever works for Joerg.)

Yes, they would be heavy and slow, but you've said dozens of times that
you don't care about that. They would be rugged and thorn proof. The
sidewalls would never blow out.

Is it because you'd have to stop typing your sound effects?
("Kabloooeeee!")

After the "Ka pow" post I got to thinking. I've never seen a tire
sidewall fail except when the tire was run with no, or very low,
pressure. It is fairly common on large trucks. One tire of a dual tire
set gets a leak and runs flat for a while and the heat build up causes
the tire to nearly disintegrate. My wife had one a while ago. Never
checks her tires and set off on a 300 Km trip on a high speed highway
with "soft" tires. Ka pow!


On road bikes it usually happens when hitting a rock "just so". Like
when the rock gets under the tire off center and flies off to the side
with gusto. Or when going through a lot of gravel. On the MTB it can
happen at any time during gnarly trail sections.

The other side wall wearing effect is mud. The tire begins to load up
with that and eventually a huge clump cakes around the BB area and
sometimes under the crown of the fork. Later things start to grind ...
phssseeeeeeeee ... now what on earth is that noise? Oh!

The last Gatorskin had threads many inches long flopping about off a
side wall.

This was different decades ago. I sometimes had a dynamo that was frozen
up but I kept riding because I thought it was just another bulb
burn-out. Until I noticed the noise and that there was a rubbing chunk
of frozen slush instead of a turning knurled roller. Yet no kaboom.

--
Regards, Joerg

http://www.analogconsultants.com/