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Aug
29
comment What types of BB-axle to crankarms interfaces are there?
There are actually 3 different sizes of square taper interfaces. Although with the two common sizes (J.I.S. and ISO) you can usually get away with using them interchangeably.
Aug
28
comment What is the difference between cheap and less cheap road bikes?
I'm not sure if you're considering buying a bike from Amazon, but I discourage it. Unless you have ridden the same model and you know exactly what you are getting. How a bike fits you and feels cannot be determined by reading a description on the internet. If at all possible, buy from your local bike shop, where you can take a test drive. Buying from a bike shop also has other advantages. They usually off free tune-ups for a year, two, or sometimes for life. Also, look at other aspects. For instance, the cheaper one allows you to attach a rear rack, while the more expensive one does not.
Aug
26
comment What is the minimum tire width for a 18 mm disc rim?
The manufacturer has a contact form on their website. I didn't see any specifications on the website for tire widths, but perhaps they would reply if you asked the directly.
Aug
23
comment Where can I find a replacement part for a seatpost collar?
I don't know if you can buy individual rubber pieces, but you could probably replace the entire seat post clamp for under $10. Possibly under $5 if you have a popular size. Check your local bike store, they should be able to help you find one that fits your bike, as there are many different sizes.
Aug
18
comment wheel does not turn when pedaling on mongoose motivator
From a quick Google, the Mongoose Motivator appears to be a BMX bike. If the back gears are spinning but the wheel isn't moving, then there's probably a problem with the freewheel. Perhaps the pawls are stuck.
Aug
14
awarded  Enlightened
Aug
14
awarded  Nice Answer
Aug
13
comment Fort bicycles company from Czech Republic: Where are the steel frames? Company renamed?
This seems to be their website. It was the first result on Google when I searched for "Fort bikes".
Aug
13
comment cheap bike tools or “can I just use generic hardware store tools instead?”
A lot of places have bike co-ops that you can visit. They have tools that you can use for free, or a small fee, and people to help show you how to use them. I also recommend buying tools as you need them. Paying $7 for a freewheel tool is a lot cheaper than getting the bike shop to do the job for you. And it's a lot more palatable than spending $200 on an entire set of tools only to find that you never use half of them, or that it doesn't include the tool you need anyway.
Aug
10
comment Smartphone racing bike mount
Phones don't generally work well for navigation on your bike because they have very low visibility in sunlight.
Aug
8
comment Why did my tire just blow up?
If the brakes are rubbing on the rim, it can cause quite a bit of heat. Are the brakes adjusted correctly?
Aug
7
comment What is considered a good “safe biking distance” to bike to work?
I would say there isn't really a maximum, but it really depends on what kind of shape you are in, and how much time you really want to spend commuting. I once had a 25 km commute, and I wouldn't want much more than that, but it's mostly because it took about an hour, which makes your day pretty long. I don't think I would have enjoyed doing 40-50 km like @DanielRHicks simply because it would eat up so much time out of my day. You'd be spending 3+ hours every day just commuting. I wouldn't like that no matter the mode of transportation.
Aug
7
comment Why the penny-farthing?
I just find it really amazing that something as complex as the car, and something as simple (or at least that's how most people see it) as the bicycle were basically invented at the same time. The steam powered motorcycle was made a decade before the safety bike, but nobody thought of adopting the system so you could propel it with your legs rather than an engine. It actually didn't use a chain drive, but actually used leather belts. Now belt drives are back in style, although no longer made of leather.
Aug
7
comment Why the penny-farthing?
As much as cyclists are supposed to dislike cars, I actually think that the car a major reason that the bicycle is decent mode of transportation at all. The safety bike didn't come into existence until 1879. Karl Benz built his first engine for a car in 1878, and patented it the year later. The advances in creating precision machined parts and the need for smooth roads brought about by the popularity of the car, made the bicycle in to a much more suitable form of transportation. Without the advances brought about by the automobile industry, the bike would have been a toy for many more years.
Aug
6
comment Disc brake rotor size and forks strength
The amount of torque generated is a function of the force multiplied by the distance that force is applied at. In the case of disk brakes, the force is being applied by the friction between the brakes and the distance is the size of the rotor. If the friction between the pads and the rotor is the same, a larger torque would be applied to the wheel/rim with the larger rotor. So with the same friction, the larger rotor would indeed produce more torque. However, I think that in most cases, the bike would actually flip over the wheel, or the front tire would skid before the fork got damaged.
Aug
5
comment Disc brake rotor size and forks strength
Yeah, but rim brakes can just be thought of as disc brakes with really large rotors. Are we actually talking about damage to the forks, or having the brake mount physically separate from the point where it is welded to the fork? I think that something else in the system would surely break before the actual fork itself was damaged.
Aug
2
comment Can't get the drive side bottom bracket cup out
If you can see any part of the threads, you can try to see which way they are going. If they angle towards the back of the bike they are reverse threaded. If you have trouble seeing it but there is some exposed thread, try running your finger nail along the thread to see which way it's going. And When I say most, I don't mean 51% of bottom brackets, but "just about all". Only Italian and Old French bikes use right hand thread on the drive side bottom bracket cup. Your Raleigh is almost certainly reverse threaded on the drive side.
Aug
2
answered Can't get the drive side bottom bracket cup out
Aug
1
comment Best Cassette Cog Material
@DanielRHicks I agree that steel would outlast aluminum, but I'm just saying that hardess is not the only thin you need to look at in cassette materials. I also think that ceramic might be good at not wearing down in the usual way, but I think that they'd be really easy to shatter even when your trying to be careful. If they chain gets caught between cogs, the thing would be toast.
Aug
1
comment Best Cassette Cog Material
There's defintely a point where something can be too hard, and thus become brittle. Using the Brinnel scale, glass rates at 1500 HB, which is much higher than other materials mentioned, but glass is obviously a poor material for making cassettes. On the other hand, hardened tool steel is rated at 1500-1900 HB, and would probably be well suited to such a task. So, while hardness is a good indicator, it's probably not the only think you should be using to determine which material is better than another for this purpose.