Tag Info

Hot answers tagged

5

I think this is kind of a non-question. You want the helmet that rides the fastest? For anything "fastest", either components or kit, just look at what the professional riders are using. This seems to imply that you either wear a regular-design lid (albeit one which is very light, very ventilated, and probably very expensive). Or, you go for a time-trial ...


4

Aerodynamics of a helmet cannot be considered in isolation but rather how it affects aerodynamics when on the rider. The fastest helmet choice for one rider won't necessarily be the fastest for another, it's quite an individual thing. I've done many, many aero tests of helmets on rider, and am often surprised at the combination that proves best. In general ...


3

There are now "sprinters" helmets that are bit in between TT helmets and regular bike helmets. Giro Air Attack is a good example. There are even some pro riders using them in TT stages.


3

The factors that affect bike efficiency are: Weight Mechanical power train Losses Aerodynamic Drag Rolling resistance For a touring bike, the difference between a folding and regular bike are all lost in the noise. Smaller wheels tend to have higher rolling resistance and the bike might be a bit heavier, but for touring it just doesn't matter that much. ...


3

Bigger tires, bigger chainrings and a smaller cassette all lead to a higher gearing (the crank arm lengths among other things also come into this, but that encapsulates into bike fit). Bigger tires are subject to frame clearance and feeling squirmy possibly. Bigger chain rings require front derailleur compatibility. Smaller cassette also requires ...


1

But you don't have the same transmission as the wheels are part of the transmission. Smaller wheels are not as efficient - more rolling resistance. You also need to send more chain which is not as efficient. You don't have the same position and lack multiple positions offered by drop bars. The frame is not as rigid and absorbs pedal energy. In the end ...


1

The 'best' is fairly subjective and probably not compatible with lightest. For what it's worth I remember reading somewhere that the Edge 510 is widely used through the pro peloton. I use a Garmin Edge 810 and would recommend it in an instant but it is possibly bigger than it needs to be if you're very worried about weight and size (I chose it for its ...


1

The following is junk science: Dynamic friction on moving surfaces comes into play - I'd put $ on it that the 8kg has better quality components and therefore bearing than the 11kg bike..... Nothing to do with weight, but in cycling weight and quality is inextricably linked Utter junk. Mechanical losses in a bike powertrain are tiny - and when you're ...


1

I am trying to understand the physics of bike weight. I have just made a switch from an 11Kg road bike to an 8Kg one (obviously there are many more factors and differences between the 2 bikes other than weight), and have noticed the benefit of reduced weight. However I am not sure I understand it. ..So you haven't noticed a difference due to weight at all. ...



Only top voted, non community-wiki answers of a minimum length are eligible