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Aug
13
comment smaller wheels on big bike to reduce height
It needs to be noted that basic sizing for a conventional "diamond frame" bike can be roughly determined by "standover height" -- you should be able to stand flat-footed on the ground while straddling the top tube, with "comfortable" clearance. (For less conventional frames you have to imagine where the top tube would be if it ran horizontally from the front connection.) There are of course several other measures for good bike fit, but this is the most basic.
Aug
12
awarded  Good Answer
Aug
11
comment Why don't road bikes use v-brakes?
I think it's obvious by now that this is primarily a religious (and commercial promotion) argument. What's installed on a given bike is a combo of what's already been tooled, what's cheap (taking into account economies of scale), what's traditional for the market, and what's "sexy" (which in part relates to advertising). What "makes sense" (whatever that ultimately means) is pretty far down the list.
Aug
11
comment Difference between high and low pressure air springs?
Force = pressure times piston area. (Piston area is proportional to piston diameter squared.) Thus, higher pressure == smaller diameter pistons, for the same rider weight. At the expense of needing better seals.
Aug
11
comment What's wrong with my rear wheel? Wheel moves about 1/4" front to back when brake is fully applied, cassette seems a bit wobbly, some rubbing noise
If you twist the wheel side to side does it wobble?
Aug
10
comment Can I run a SRAM road rear derailleur with downtube shifters?
@Benzo - That is the main question. Of course, a downtube friction shifter is not a technological marvel, and you could make one to match the derailer, given some simple machine shop tools. Or someone may sell one.
Aug
9
answered Tips to Alleviate Hand Soreness
Aug
9
comment What Supporting Muscle Groups Should Be Strengthened?
Somewhat orthogonal: I'm remembering that a major biker (LeMond?) in the late 70s took up cross-country skiing in the winter to build up his endurance (because XC-skiing is about the most intense cardio exercise you can do). However, he dropped it after a year or two because it built too much upper-body strength (and weight) that was a negative when biking. No moral there, just an interesting tidbit.
Aug
9
comment Tips to Alleviate Hand Soreness
IMO, bikes are commonly sold with the handlebar too low for most people (because the low handlebar "looks mean" in the showroom), and the newer "threadless" design reduces the amount of easy adjustability of height. Consider adding an extension to raise your handlebar an inch or two.
Aug
9
comment Crankset replacement
Sheldon to the rescue: sheldonbrown.com/bbsize.html#exage . If you just want to replace the rings the critical number is 110/74 BCD.
Aug
8
comment Why the penny-farthing?
You don't think that Leonardo could have built a passable bicycle if he was motivated to?
Aug
8
comment Why the penny-farthing?
@whatsisname - How so? Wheeled wagons had been around for at least a thousand years. Metal was available for bearings, and even if not, wood made good bearings if you used a hard wood and charred the bushings. Belts of leather were well within the ability of even the average tinkerer to make.
Aug
8
comment My stem keeps moving side to side even thought I tighten it
Also, examine the space between the "fingers" that the pinch bolts pull together. If there isn't enough clearance to slip a thin sheet of paper into the crack (with the bolts tight) then the clamp is the wrong size or you need a shim.
Aug
8
comment Why would a bike computer calculate distance accurately but average speed inaccurately?
Actually, several limited instruction set computer designs can ONLY subtract, not add.
Aug
8
comment Why did my tire just blow up?
Do check to make sure the side of the rim didn't fail. Is there a hole in the tire?
Aug
8
comment Why did my tire just blow up?
How sunny was it? I've seen this happen (many years ago) when skinny-tired bikes were laid down in the sun after a hard ride. The tires would jump off the rims due to uneven thermal expansion.
Aug
8
comment What is considered a good “safe biking distance” to bike to work?
5 miles is definitely reasonable, if the roads are not too bad. The "cruiser" bike would not be ideal, though.
Aug
8
comment What Supporting Muscle Groups Should Be Strengthened?
Running would be good. Swimming would probably be ideal, but isn't always practical. But a simple gym routine or some such would suffice as well.
Aug
7
comment Bought slightly too big outer tube - options?
You forgot option five: Arrange for them to catch fire and submit an insurance claim.
Aug
7
comment What Supporting Muscle Groups Should Be Strengthened?
The only thing you really need to do is to have SOME activity other than cycling, so other muscles will be stressed a bit, vs only your cycling muscles.