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Oct
24
comment How can I prolong the life of my bottom bracket bearings?
Another reason for sounds from the BB is the cartridge shifting between the cups, if they're not quite tight enough. This is harmless but annoying.
Oct
23
comment How can I prolong the life of my bottom bracket bearings?
Very often "ticking" from the BB area is due to a loose crank arm or a problem with the pedal. These are far more likely than a BB bearing problem. And it sounds like the shop is only too happy to have you pay to replace the bearings rather than have to figure it out.
Oct
23
comment Rear Derailleur compatability?
Generally, number of speeds and tooth range -- difference between teeth on largest cog and smallest, front + rear.
Oct
23
comment Can a bent hub damage my fork?
If the axle is visibly bent the bearings will go bad very quickly. (The danger to the fork is minor compared to other hazards here.) The axle (and possibly the entire hub) should be replaced. (How did you manage to bend this?)
Oct
23
comment How can I prolong the life of my bottom bracket bearings?
What symptoms cause you to replace the bearings, if I might ask?
Oct
22
comment Does this sound right: $485 ticket for not walking my bike across the street?
You need to honestly state what you did. If you rode across at an intersection, in a driving lane, in keeping with traffic laws, then you definitely have a case. If you went counter to signals or "jayrode" or if you rode your bike in a pedestrian walkway then you may have a problem, depending on the particulars of state and local laws.
Oct
22
comment Why have 29-ers arisen only recently?
+2 for "In my opinion mountain bikes are inferior". ;)
Oct
22
comment How can I prolong the life of my bottom bracket bearings?
When you replace them, are they all rusted up? On installing a cartridge, coat its shell and the inside of the housing with grease, to suppress rust. And if you leave the bike in the rain cover the seat in a way that will prevent water from running down into the seat tube. (A drain hole is probably a good idea if you leave it in the rain much, but to be avoided if you go "mudding" a lot.)
Oct
22
comment Why have 29-ers arisen only recently?
I would guess it's because most "mountain" bikes have traditionally been 26" and those going to the 700C standard wanted to be able to easily identify theirs. And "700C" doesn't convey "fat tire" (nor is it sexy). And it's something to hype.
Oct
21
comment Need replacement cones for Shimano front hub
I bought some new cones for my Shimano hub from this vendor back in July. Dunno if they have yours. Also purchased an entire new hub from this vendor. Eventually replaced the entire wheel (through Peter White), though, since the original hub was apparently bent and it was cheaper to buy a new wheel than to rebuild.
Oct
21
comment Why does reducing bike weight have such an impact on speeds?
Yeah, the "cost" of the climb generally swamps the "blessings" of the descent. But keep in mind that a 3KG increase in weight is about 3.6%, and that is the MOST increase in effort you'd see on the heavier bike.
Oct
21
comment Why does reducing bike weight have such an impact on speeds?
"your are in effect having to lift half the wheel in order to produce forward momentum" -- That is totally bogus. The only effect wheel weight (vs weight elsewhere) has is on acceleration, and even then the difference is quite modest.
Oct
21
comment Trials: knee and elbow hurting, am I doing it wrong?
At the very least, "listen" to your body and ease off on stuff that's painful or which tends to result in pain. (Remember, pain is the body's way of saying "Don't do that!") But also do joint strengthening exercises -- squats and straight leg lifts for the knees and some sort of similar weight-bearing exercise for the elbows and shoulders. And start looking around for a good sports medicine doc, if it doesn't improve.
Oct
19
comment How to fix/prevent blocked cleat bolts
BTW, when drilling hard steel you need a SHARP bit, go SLOW, with lots of PRESSURE, and use a few drops of OIL on the bit. "Spinning" the bit (such that it doesn't grip) wrecks the bit and overheats the workpiece. If you're doing it right you can feel the bit "biting" into the steel.
Oct
19
comment How to fix/prevent blocked cleat bolts
While you have the sealant tube in your hand, squeeze some into the open slots ahead of the cleat, to help keep water and crud out of there. Not waterproof, but it helps a bit.
Oct
18
comment Why ride a single-speed bike?
$400 for "fork upkeep"? I'll admit that, after a dozen years, I spent $250 getting all my bearings repacked, cables replaced, brake pads replaced, new cassette and two new rings, but I doubt that $20 of that could be charged to the fork bearings, and there was no suspension to worry about.
Oct
17
comment Must a Bicyclist Riding on a Sidewalk Stop at a Stop Sign?
It's possible you may not be required to come to a "full stop", but you must at least slow to a "walk" (not a "trot") so that you're proceeding at the pace of a pedestrian, not a cyclist. It's unreasonable to expect motorists to expect cyclists to come darting across an intersection in a crosswalk, vs moving slowly towards and into the intersection as a person on foot would.
Oct
17
comment Fixing damage to brake rim surface
If you decide to sand, what I'd do is stick bits of emery paper behind the brake pad and squeeze, as you rotate the wheel by hand, back and forth going several inches beyond the problem spot.
Oct
17
comment If external bearing BBs are better, why use traditional ones?
The answer is yes to both, plus the external BB is positioned as a "premium" product, so they'd charge more for it even if it were cheaper to make. (I'm not too cynical.)
Oct
16
comment If external bearing BBs are better, why use traditional ones?
They're more expensive and are of little benefit to the average cyclist.