dean d
there is a lot of bicycle rims out there, i need someone who is very expertise in this, need a lot of people who can answer these question.
1. what is the idea weight of an bicycle rims "the stanard weight!"
2.with all the HUB that is ok there what is the idea wight and what is the best "hub" for the rims not to cheap or over price! i know all comes to preferances!
3. what is the size of rims that comes in kids bike and what is the basic size rims comes in aduilt bike?
4.what is the best and very light material to use on the bicycle rims today. and why?
5. what type of "hub" do you perfure on the bicycle rims , for example if there is and exchange hub with bearings to hold the hub what will you use?
6.what is the best "bearings" to be use in the "hub" and what manfactural is it from.
7.what are all the size that bicycle rims come in and what are the size for what type of bike it use on.
8.how many type of bikes that is out there need all the names and who make them.
help here
Answer
There are no single answers to your questions.
Do you understand that the rim is the part of the wheel that holds the tire, the hub is the part that allows the wheel assembly to turn? Combination of rim, hub, and spokes make the wheel.
1) There is no ideal weight. This depends on how you will use the bicycle and what the material is. Since the rim is the outside of the wheel it will be most efficient when it is very light. When a rim is very light it will be either very weak or very expensive.
2) There should be no worry about the weight of a hub. It is too close to the center of the wheel revolution to make a significant difference in inertial forces. I prefer more strength instead of lighter weight, like Phil Wood or Hi-E hubs.
3) I think you have already asked this question. Most kids bike rims are 16", 20", and 24". Most adult bike rims are 26", 27", 650C (571mm), and 700C (622mm) in diameter.
4) Aluminum is the best for durability and value when making rims. Magnesium looks promising in the near future. Titanium and carbon fiber are too flexible or too breakable and way too expensive for rims.
5) You cannot separate hubs from bearings. You must have bearings inside hubs. My preference is for stainless steel ball bearings with hardened steel races and cones. Many people prefer sealed bearings but I like to service my own hubs without replacement.
6) Most modern hubs use sealed roller bearings, usually made from carbon steel but these are not serviceable.
7) You asked this before. Please note your last question.
8) There are many brands of bicycles from all over the world. You will have to do this research by yourself.
I do not think you are using this for college. It seems you are making market analysis for your product. If this is true you are cheating yourself by asking others for this information.
There are no single answers to your questions.
Do you understand that the rim is the part of the wheel that holds the tire, the hub is the part that allows the wheel assembly to turn? Combination of rim, hub, and spokes make the wheel.
1) There is no ideal weight. This depends on how you will use the bicycle and what the material is. Since the rim is the outside of the wheel it will be most efficient when it is very light. When a rim is very light it will be either very weak or very expensive.
2) There should be no worry about the weight of a hub. It is too close to the center of the wheel revolution to make a significant difference in inertial forces. I prefer more strength instead of lighter weight, like Phil Wood or Hi-E hubs.
3) I think you have already asked this question. Most kids bike rims are 16", 20", and 24". Most adult bike rims are 26", 27", 650C (571mm), and 700C (622mm) in diameter.
4) Aluminum is the best for durability and value when making rims. Magnesium looks promising in the near future. Titanium and carbon fiber are too flexible or too breakable and way too expensive for rims.
5) You cannot separate hubs from bearings. You must have bearings inside hubs. My preference is for stainless steel ball bearings with hardened steel races and cones. Many people prefer sealed bearings but I like to service my own hubs without replacement.
6) Most modern hubs use sealed roller bearings, usually made from carbon steel but these are not serviceable.
7) You asked this before. Please note your last question.
8) There are many brands of bicycles from all over the world. You will have to do this research by yourself.
I do not think you are using this for college. It seems you are making market analysis for your product. If this is true you are cheating yourself by asking others for this information.
Why does the Chicago Police Department have ATVs?
Krukster
This has been bugging me since I was a kid. I mean there are no dirt tracks or hills around, the most I can see them do is go from street to sidewalk to chase someone on foot.
I do understand their usefulness at parks and beaches and such but I still see them running far away from the lakefront.
Answer
They have been modified and really would not do well on hills and dirt tracks.
Chicago continues to look for a cheap replacement of the 3 wheeled motorcycle. The 1950's era Harley 3 wheelers lasted until the late 70's. They tried replacing them with custom Honda 3 wheelers but they turned out to be very dangerous. They tried to use (and still do use) Cushman cabs but they don't maneuver or have enough speed when needed. They use ATVs now but they really don;t work that well.
You need a good stable and maneuverable platform for patrol that cannot be done with a car or on foot. For cost reasons the machine must be multi use. Bicycles are great, I patrol on one in the summer, but are not fast enough when you are needed far away, they are also not that stable.
ATVs and 3 wheelers are mostly used as supplemental traffic (parking ticket enforcement which gets traffic moving better), park and lakefront patrol, anyplace there are a lot of people and a little bit of space.
They have been modified and really would not do well on hills and dirt tracks.
Chicago continues to look for a cheap replacement of the 3 wheeled motorcycle. The 1950's era Harley 3 wheelers lasted until the late 70's. They tried replacing them with custom Honda 3 wheelers but they turned out to be very dangerous. They tried to use (and still do use) Cushman cabs but they don't maneuver or have enough speed when needed. They use ATVs now but they really don;t work that well.
You need a good stable and maneuverable platform for patrol that cannot be done with a car or on foot. For cost reasons the machine must be multi use. Bicycles are great, I patrol on one in the summer, but are not fast enough when you are needed far away, they are also not that stable.
ATVs and 3 wheelers are mostly used as supplemental traffic (parking ticket enforcement which gets traffic moving better), park and lakefront patrol, anyplace there are a lot of people and a little bit of space.
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Title Post: i need help on bicycle rims, i have 8 question. need for college!?
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