Tag: Worth

What’s My Car Worth?

One of the most important pieces of information to have on hand when purchasing a vehicle — especially a used one — is its actual value when conducting both a private sale and a dealer-authorised sale. Knowing a car’s value ahead of time allows buyers to get a great and fair deal on a car, while sellers can use a vehicle’s value to price the sale fairly and attract the largest number of potential buyers.

At What’s My Car Worth? we aim to provide this service as conveniently as possible. Using a car’s number plate and basic information about its features and mileage, we can calculate with a good degree of accuracy what a car is worth when buying it from a dealer, or when conducting a private sale or purchase away from traditional dealer lots. Our service is quick, efficient and free, and it’s the best way to make

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Are Expensive Bicycle Wheels Worth the Money? Let’s Check the Physics

In this video, you see a cyclist testing new aerodynamic wheels from Zipp. Swapping your wheels may seem like a small change, but can make a big difference. From his tests, the rider discovers:

  • With conventional wheels, he can ride 20 minutes at an average speed of 41.12 kph with an average power of 379 watts.
  • With the Zipp 808 NSW aero wheels he rides 51 minutes at an average speed of 41.13 kph and average power of 344 watts.

Before looking at power and energy, I should go over two small details.

First, how do you measure power? Cyclists can measure power by installing a small computer, called a power meter, that measures the input torque at the pedals or crankshaft and records the rotation angle at timed intervals. If you know the torque and angle, you can calculate the input energy. Dividing this energy by time gives you

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