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Aug
18
comment Rear wheel wobbles
Either the tire has been mounted lopsided or the wheel is out of true. If it's simply the tire you can deflate it and straighten it -- it should straighten up with a few tugs. If the wheel is out of true it must be "trued", a conceptually simple operation but one that requires some mechanical ability.
Aug
18
comment Cube bike cassette wobble
What do you mean by "backlash on the wheel"?
Aug
18
comment Wrong bike gear
Yeah, a previously working setup will tend to get off like this as the cable stretches. You get a lot of cable stretch when the cable is new, and several adjustments may be needed over a period of a few weeks. After that, only occasional adjustments are needed until the cable reaches end of life and starts to break one strand at a time.
Aug
18
comment Pressure gauge on my pump stuck at one value, what is wrong?
I had my Topeak floor pump fail in June. On inspection, the pin that secures the chuck lever had slipped out of one end of the chuck body, allowing the lever to be cockeyed. Unfortunately this resulted in damage to the gaskets (since I tried at least a dozen times to get it to work, each time abrading the center seal), and I had to replace the chuck.
Aug
17
comment wheel does not turn when pedaling on mongoose motivator
If the chain is properly installed and the rear cog is turning with the chain then something has come apart inside the rear hub. You need to take it to a bike shop.
Aug
17
comment Why the narrow wheels on comfort bikes?
Those tires don't look all that narrow to me -- I'd guess 28mm, maybe 32mm. And you certainly do see wider tires (up to 2") on "comfort" bikes in the US.
Aug
17
comment Why the narrow wheels on comfort bikes?
@Angelo - I run 35mm tires and consider a Kevlar belt to be "manditory", to prevent punctures every 100-200 miles.
Aug
16
revised How to ride to work without sweating?
rolled back to a previous revision
Aug
16
comment Are there any generic hose extensions for frame pumps?
Never seen it. You could make one by purchasing a replacement hose for a floor pump, cutting off the pump end fitting, and then fitting in a Schrader valve body.
Aug
15
comment Why are roadies concerned about weight?
It should be noted that a 10% grade is damn steep, and a 5% is a grade you definitely notice. And even if adding 5 pounds does raise the power required to climb a 5% grade from 285 to 291 (ie, 6 watts -- as much as a small night light), it makes little sense to obsess over ounces.
Aug
15
comment How to judge BB height visually and the effect on handling?
Head angle has far more to do with handling than does BB height. And on virtually all bikes you cannot expect to pedal on a sharp turn -- the inside crank must be up to avoid ground interference.
Aug
15
answered How to correctly use an Avenir Airsource One bicycle pump
Aug
15
reviewed Approve How to correctly use an Avenir Airsource One bicycle pump
Aug
15
comment Should or can I (car) wax my frame?
Don't wax the bike until it's had a few months for the paint to "cure". If the paint has not fully cured the wax can actually damage it. (This is why you're advised to not wax new cars.)
Aug
15
comment Why are roadies concerned about weight?
Realistically, the two main factors are hills and ego. Minor changes in weight have no effect on the flat, and have precious little effect on acceleration.
Aug
15
comment Why are roadies concerned about weight?
@tisek - Weight has nothing to do with air resistance. And weight has precious little to do with friction generally. The main effect on the flat is to very slightly increase "rolling resistance" in the tires, but a few ounces difference will not have a measurable effect, even under laboratory conditions.
Aug
15
comment How to fix/prevent blocked cleat bolts
Frankly, if it's been 7 years the screws are probably rusted in place anyway. But first make sure you're using the right Allen wrench. Pretty sure these are metric, but likely there's an English that seems like it "ought" to fit but won't.
Aug
14
comment Anyplace sell bolts for SPD cleats?
Yeah, a lot of hardware stores carry metric cap screws now, and some may even have them in stainless. Re "stripped" bolts, they should be just about impossible to strip if you install them correctly. However, after several years they will rust in place and be impossible to remove. Such is life.
Aug
13
comment smaller wheels on big bike to reduce height
You can use a smaller width tire with the same rims, and generally not need to adjust anything. This might gain you a half inch or so, depending on your current tire and rim. Otherwise, installing smaller wheels just isn't worth it. It would cost $100-300 for the new wheels and tires, and you'd still have a problem with the brakes. And only gain about an inch.
Aug
13
comment smaller wheels on big bike to reduce height
And a way to roughly set seat height on a road bike is to have someone hold the bike while you sit on it and pedal backwards (assuming a bike with a freewheel). Do this with your HEELS on the pedals. With your heels on the pedals your knees should just barely get to perfectly straight, without having to rock in the seat. Then, when you adopt the normal stance of toes on the pedals your knees will be slightly bent. Once adjusted this way you may find you want to go up/down a half inch or so, but you shouldn't need much more. (Of course, off-road bikes may need to be set up different.)