How Bicycle Wheel Rim weight changes forward acceleration?

AI Thread Summary
Changing to lighter bicycle wheel rims can significantly improve acceleration, with a weight reduction of 0.5 kg in total rim weight equating to the effect of nearly reducing the frame weight by 1.0 kg. However, in BMX, there is a trade-off, as rims must maintain strength to withstand impacts from jumps, limiting how light they can be made. The discussion emphasizes that while lighter rims enhance performance, they must also be durable enough for the demands of BMX riding. Calculating the exact acceleration improvement requires specific measurements and conditions to be provided. Overall, the balance between weight reduction and structural integrity is crucial for optimal performance.
Sprogpole
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How much faster will a bicycle accelerate forward if both front and rear wheel rims are changed for lighter ones?
Power input, size, hubs, spokes tyres, Frame etc all staying the same.
I can give you any sizes and weights needed, let me know what is needed for this calculation and I’ll reply.
Thanks for your time
 
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The affect on acceleration of a difference in weight in the rims would be similar to a bit less than doubling that same difference in weight on the frame. If each rim is 0.25 kg lighter, for a total decrease in rim weight of 0.5 kg, then the affect would be similar to the frame being a bit less than 1.0 kg lighter.
 

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