32,224 reputation
13287
bio website
location Minnesota, USA
age
visits member for 3 years, 2 months
seen 4 hours ago

Old, tired, crazy.


Jul
30
comment How Big is my Wheel Circumference?
(Of course, the other thing you can do is simply measure how far the bike travels in one full revolution of the wheel)
Jul
30
comment How Big is my Wheel Circumference?
(And there's a cheat sheet of sorts at sheldonbrown.com/tire-sizing.html)
Jul
30
comment How Big is my Wheel Circumference?
(A "650" rim is also known as a 26" rim, but the actual rim diameter is 571. The 23mm tire will approximately describe a 23mm circle, so add 23 twice to account for the tire on the rim. And diameter times pi = circumference.)
Jul
30
comment How Big is my Wheel Circumference?
(The diameter is roughly 571 + 2 * 23, or 617. Times pi is 1938.)
Jul
30
comment How Big is my Wheel Circumference?
3.14159268 times the diameter.
Jul
29
comment How do I get rid of odor from cycling shoes?
Generally, chlorine bleach is not very effective for this sort of thing. Hydrogen peroxide is more effective, but I'm not sure I'd recommend either for relatively expensive shoes.
Jul
29
comment How do I get rid of odor from cycling shoes?
I recommend not smelling them.
Jul
29
comment Chain Slipping?
Rotate the chain to where the "stiff" link is on top, between the two sprockets. Grasp it with your hands and try to bend it in the direction it doesn't want to bend (ie, sideways), first one way, then the opposite way. Don't apply enough force to actually bend the chain, but put a little muscle on it. This will often loosen a "stiff link". If that doesn't do it the chain may need replacing.
Jul
29
comment Why is it important to keep bearing sets when greasing a campagnolo hub?
I don't understand your question. You can buy new good-quality balls quite cheaply, and you might as well replace them when repacking a bearing. Just be sure to replace all balls, and from the same lot, so that all are the same size. (The used ones are worn and therefore smaller.) And bearings should not be "slightly loose" but should have a tiny bit of "preload" when properly adjusted. When you put a load on the bearing the axle stretches slightly and other changes occur which make the bearings "just right".
Jul
29
comment Why does coaster brake hub growl when coasting but not when braking or pedaling?
There are several different schemes, but basically the coaster brake has two threaded shafts, one that tightens when you pedal, pulling together a clutch that drives the wheel, and one that tightens (as the other loosens) when you back-pedal, to pull together the brake. When you're coasting both the clutch and the brake are "open", but one or the other may be close to touching and hence make some noise. Or, if things are loose (which they should not be) it could simply be rattling inside. You should take it back to where you got the bearings replaced and have them fix it so it's not loose.
Jul
28
comment How do Mini V-brakes compare to cantilever brakes for Cyclocross bikes?
Just a bit of trivia: V brakes were invented by Shimano to allow suspension forks to be built without a "bridge" to carry the central brake pivot (or cable anchor/bridle, in the case of cantis). It is only good marketing that got them onto virtually every bike made, suspension or not.
Jul
28
comment What are the downsides of a twisted wheel?
It would be very unusual for such a problem to require replacing the wheel. How much it will cost to have a bike shop fix it depends on whether they just "tweak" the wheel (possibly free) or instead insist on giving it a full "tune up" (likely tens of dollars/Euros).
Jul
28
answered What are the downsides of a twisted wheel?
Jul
28
comment Chain Splitter vs. Chain Tool vs. Chain Breaker
Yeah, that's one. There are other designs.
Jul
28
comment Chain Splitter vs. Chain Tool vs. Chain Breaker
There is a "chain breaker" that is like a pair of pliers, vs using the threaded shaft for forcing the pin out. And you need some sort of "chain breaker" even if you use Power Links, et al, since you still have to cut the new chain to length.
Jul
28
comment Can disc brakes be considered safe for road group rides?
Any cyclist leading a line needs to be aware of those behind him when braking, and modulate his braking as conditions warrant.
Jul
28
comment Can I upgrade V-brake to disk brake for Cannondale Quick Cx 5
@Kibbee - But to supply a frame with disk lugs would mean the manufacturer would have to install a different, heavier, less flexible fork.
Jul
28
comment Can I upgrade V-brake to disk brake for Cannondale Quick Cx 5
If the frame does not have lugs on the fork and rear stays to attach the calipers then it's highly impractical to change. Otherwise it's simply impractical.
Jul
28
answered What is the maximum safe storage temperature for a bike?
Jul
27
comment Chain rings slip when crank is turned
As has been pointed out in a duplicate thread, there once was a Shimano "Front Freewheel System" which placed a freewheel mechanism with the front sprockets. See this skeleton Wikipedia article for some basic info. Note that the article claims that some specialized mountain bikes still use the scheme, even though it would have disappeared from regular bikes by 1990 or earlier.