What creates more friction? Gears and chain or belt and pully?
I am making a home made wind generator for a school project. I am using a car alternator( yes i know its not 100% power efficient. but im keeping cost down). I need to know how to make a good blade to generator ratio and keep the friction down. I have heard rumors or people using old 10 speed gears and chain. or should i use belts and pulleys? what would create the least friction? Yes i plan to use sealed bearings also.
Answer by kasab
For your purpose you should talk about rolling resistance rather than friction. A belt and pulley system is heavily dependent on the presence of friction. That system would suit your work, as it offers a lower rolling resistance.
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