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Mar
21
comment loose spoke that will not screw back in
Although looking more closely I see it's one o dem fancy-dancy hubs that take straight spokes. The spoke has probably gotten so loose that it twists at the hub. You probably need to hold the spoke with pliers while you tighten the nipple, at least until you get it snug enough that the spoke end grips the hole in the hub.
Mar
21
comment loose spoke that will not screw back in
It sounds like the spoke has broken off at the hub.
Mar
21
comment How tight should brakes and shifters be on the handlebars?
Tight enough that they don't move under normal circumstances. I doubt that you'll find anyone who routinely uses a torque wrench on them.
Mar
20
comment What is the actual cable pull of brake levers?
When you're trying to figure out compatibility between unbranded components, especially ones pulled out of the odd parts box.
Mar
20
comment What is the actual cable pull of brake levers?
(Measure the distance between the two dots in the above diagram.)
Mar
20
comment What is the actual cable pull of brake levers?
Knowing that the pivot distance is 21mm for short and twice that for long is probably the best way to distinguish the two "in the wild". That distance can be eyeballed fairly easily -- 0.8 inches vs 1.6 inches from centerline of cable to pivot. (This is assuming that the mechanism isn't concealed in some gaudy plastic housing.)
Mar
20
comment What is the actual cable pull of brake levers?
I believe the difference is roughly 2:1, but I've never seen any numbers.
Mar
19
answered Sliding chain over the cassette
Mar
19
comment Sliding chain over the cassette
Are you sure you cut the chain to be exactly the same number of links (not the same physical length) as the old one?
Mar
19
comment Calculate frame stack and reach
Well, one could "estimate", based on "typical" figures and ratios.
Mar
19
comment Calculate frame stack and reach
@JohnP - But my point is that from those dimensions you can't calculate any of the other dimensions. Can't even calculate the height of the top bar relative to the axles. Can't calculate the height of the BB relative to the axles.
Mar
19
comment Sliding chain over the cassette
Are you sure you threaded the chain through the rear derailer properly?
Mar
19
comment Speed and comfort of a racing bicycle?
You hint that you're currently riding an inexpensive single speed bike, likely with fat tires. Switching to even a good quality "hybrid" bike with derailleur shifting and well-chosen road tires inflated to a reasonably high pressure should make your ride significantly easier/faster. (A real "racing" bike is far from comfortable and likely impractical for your needs.)
Mar
19
comment Speed and comfort of a racing bicycle?
The bike doesn't produce the speed, the rider does. But 50km/h is only about 31 mph, a speed I can relatively easily achieve on a modest downhill with my touring bike. A good bike should be reasonably stable at this speed so long as the road is reasonably smooth.
Mar
19
comment Cycle tyre and tube burst
@Freakyuser - If you ride in areas where there are apt to be a lot of hazards (broken glass, etc) you definitely should get puncture-resistant tires. These come in two varieties: "Kevlar (aramid) belted" tires, with a reenforcing "bullet proof" fabric belt around the circumference, and tires with a tough plastic layer around the circumference. The former is lighter and more flexible but the latter is probably more resistant to glass-type hazards.
Mar
18
comment Cycle tyre and tube burst
(This was my first group tour, so a lot of events stuck in my head, particularly the bra incident.)
Mar
18
comment Cycle tyre and tube burst
@PeteH - Yeah, I think I've mentioned it before. It was interesting in that I got to see at least one failure as it happened -- the tube poked its head out of the tire and blew a bubble several inches across before it popped. Took probably 2-3 seconds.
Mar
18
comment Cycle tyre and tube burst
I recall, 30 years ago, seeing at least two, maybe three bikes laying down in a parking lot get blow-outs of the off-the-rim variety, all within 15 minutes. It was a hot day and we'd just completed a probably 30 mile morning, fully loaded.
Mar
18
comment Cycle tyre and tube burst
Yes, there would be two distinct failure modes. One where the tire slipped off the rim and the tube burst, leaving the tire at least superficially undamaged, and the other where the tire itself blew out. The "slipped off the rim" thing can be just dumb luck, can be due to poor tire mounting, or can be due to a bad rim. The "just blew out" case, with a hole in the tire, is pretty much for sure due to a damaged or defective tire.
Mar
18
comment Calculate frame stack and reach
Hmmm. They stop just short of giving you enough info to calculate everything.