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Jun
29
comment Tire Continually going flat
If you're repeatedly getting a hole on the spoke side ("inside" of the tube) then you almost certainly have a spoke poking through.
Jun
29
comment What is the second thread on the crank for?
Something along those lines.
Jun
29
comment Best ways to avoid getting hit by cars?
You failed to mention chickens. I once hit a chicken, and though it was a fair thump, it did not cause a crash. (For me that is -- unsure of the chicken.)
Jun
29
comment What is the second thread on the crank for?
The problem is almost certainly that the crank arm came loose and was allowed to stay that way while the bike was ridden. Once a crank arm is loose it only takes a small amount of riding to cause the socket in the arm to be deformed such that it no longer tightly fits on the shaft. Sometimes a skilled and creative bike mechanic can supply a "fix", but most likely your arm needs replacing.
Jun
28
comment What is the second thread on the crank for?
(And if the crank arm comes off without resorting to a puller it usually means that the arm (and possibly shaft) is toast.)
Jun
28
comment What is the second thread on the crank for?
The threads are for a crank puller. They also incidentally hold the screw-on caps that cover the openings.
Jun
28
comment How does the risk of a cyclist colliding with a vehicle vary with the speed difference?
@Michael - It should be noted that a substantial fraction of car-bicycle collisions (perhaps half) are technically the fault of the cyclist. And a substantial fraction of serious bicycle injuries (again, I'm recalling that it's about half) don't involve an automobile at all.
Jun
28
comment What exactly are Quest bikes?
There are likely thousands of bike "brands" that have been use over the years. Especially with the Chinese churning out cheap bikes like they are there's a need by the manufacturers to change brand names frequently so that a poor quality reputation doesn't build up. Don't know about "Quest" in particular, but many brands like this are only sold for a year or two, then they quietly go away.
Jun
28
comment How does the risk of a cyclist colliding with a vehicle vary with the speed difference?
More relevant is this answer: bicycles.stackexchange.com/a/9035/1584
Jun
28
comment How does the risk of a cyclist colliding with a vehicle vary with the speed difference?
Your two quotes are addressing different things. Obviously an accident, when it happens, is more likely to produce serious injuries if the closing speed is greater. This is (mostly) unrelated to the probability of the collision in the first place.
Jun
26
comment Best ways to avoid getting hit by cars?
I am reminded of a situation I encountered in Wisconsin about 20 years ago. Was touring self-contained and entered a small town, following a state road. Turned to go down Main Street and discovered that it was torn up, with only a narrow gravel path in each direction for 2-3 blocks. Traffic was fairly heavy for such a small town. After assessing my options, I simply dropped to my granny, moved into the center of the path, and continued at about 5 mph, letting the cars behind wait. No one honked, no one seemed irritated, as they could see that this was my only real option.
Jun
26
comment How to decrease belly fat while cycling?
What do you think causes ketosis? It happens when blood sugar levels drop and the muscles must burn fat more directly. The by-product of this form of metabolism is ketones. The way to tell simple low blood sugar from ketosis is to consume some carbs and see if you quickly recover. Of course, if you don't then you're pretty much out of action for hours. (If you've never experienced this form of "bonk" then don't discount it -- it's not pleasant.)
Jun
26
comment Safest position to ride on roads with cars
There is no "hard and fast rule".
Jun
25
comment Bicycle maintenance notes, technical book: do you have one?
Park Tool and Sheldon Brown have most of the information you will ever need.
Jun
25
comment How to avoid buckle wheel?
It sounds to me like you have broken a spoke. When a wheel becomes "untrue" you should immediately (as soon as you can get to a place where it can be serviced) have that tended to.
Jun
25
comment Roads that look uphill feel flat and flat looking roads feel uphill. Possible causes?
First and foremost, when you're coming down a hill it amplifies the apparent steepness of any approaching uphill section. And remember that a light headwind or tailwind can easily affect how "steep" the hill feels.
Jun
25
answered What are the absolute essentials a cyclist should own?
Jun
25
comment Is graphite grease suitable for bicycle bearings?
"Dry lubricants" are not a good choice for ball bearings, as they do not exclude water. The #1 role of bicycle bearing grease is to keep water out.
Jun
25
comment How to decrease belly fat while cycling?
It needs to be noted that ketones, above a certain level, are toxic. "Ketosis" (excess ketones) is a common cause of "bonking" or "hitting the wall" -- you feel really lousy and queasy and it takes hours, if not days, to recover.
Jun
25
comment How to decrease belly fat while cycling?
The muscles also burn glucose (blood sugar), from recently ingested carbs (or from the conversion of fat to glucose in the liver). Fat is burned in the form of fatty acids, which must be released into the bloodstream as a result of several enzymes, primarily in response to low blood sugar and resulting low insulin levels. It's necessary to deplete blood sugar to a degree before fat burning begins in earnest.