How Bicycle Wheel Rim weight changes forward acceleration?

In summary, the conversation discusses the potential impact on acceleration when changing the front and rear wheel rims to lighter ones while keeping other factors such as power input, size, hubs, spokes, and tires the same. The speaker offers to provide specific sizes and weights for a calculation. It is also mentioned that there is a limit to how light the rims can be in BMX to avoid damaging them while landing jumps. The effect of a weight difference in the rims is estimated to be similar to a slightly lighter frame.
  • #1
Sprogpole
3
0
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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  • #3
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.
 

1. How does the weight of a bicycle wheel rim affect forward acceleration?

The weight of a bicycle wheel rim can have a significant impact on forward acceleration. A heavier rim will require more force to get it moving, which can slow down the overall acceleration of the bicycle. On the other hand, a lighter rim will require less force, allowing for faster acceleration.

2. Is a lighter or heavier bicycle wheel rim better for acceleration?

A lighter bicycle wheel rim is typically better for acceleration. This is because a lighter rim requires less force to get it moving, allowing for faster acceleration. However, there are other factors to consider such as the terrain and riding style, so it is not always a straightforward answer.

3. How does the distribution of weight on a bicycle wheel rim affect acceleration?

The distribution of weight on a bicycle wheel rim can also affect acceleration. If the weight is evenly distributed, it can help with stability and balance, which can improve acceleration. However, if the weight is concentrated in one area, it can create imbalances and slow down acceleration.

4. Can changing the weight of a bicycle wheel rim improve acceleration?

Yes, changing the weight of a bicycle wheel rim can improve acceleration. As mentioned earlier, a lighter rim will require less force and allow for faster acceleration. However, it is important to consider other factors such as the type of riding and terrain before making any changes.

5. How do other factors such as tire pressure and tread affect acceleration with different bicycle wheel rim weights?

Other factors such as tire pressure and tread can also have an impact on acceleration with different bicycle wheel rim weights. Higher tire pressure can improve acceleration, but it may also make the ride less comfortable. Tread can also affect acceleration, with smoother treads allowing for faster speeds, but more aggressive treads offering better grip on certain terrains.

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