Recent content by E190

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    Inertia and bicycle wheels related to wattage and time

    Thanks for all the quick replies. In road cycling aerodynamics greatly affect racing. There are many ways to shave 20-30 seconds off your 40km time trial. This is normally accomplished by an aero helmet, wheels, frame, clothing, etc. However, in mountain biking aerodynamics isn't as much a...
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    Inertia and bicycle wheels related to wattage and time

    There are tons of factors here. But I am mainly interested in seeing if there is any real life measurable advantage to decreasing inertia. Keeping everything constant (stiffness, thickness, price, etc), is there an advantage if I build up a wheel using rim A at 545 grams, rim B at 425 grams, and...
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    Inertia and bicycle wheels related to wattage and time

    Thanks for the help. I understand that accelerating the rider is much more work than accelerating the added wheel weight, how does the decrease in rim weight translate to watts and/or time savings. Let's say I can hold 250 watts over 40km. Using this website (bikecalculator.com) a 300 gram...
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    Inertia and bicycle wheels related to wattage and time

    In the bicycle industry, there is a lot of marketing saying that rotational weight is more important than static weight when it comes to accelerations and competition. I understand I=mr^2 but how do you compare differences. Keeping the the hub/spokes constant, how much advantage would you get...
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