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49 votes
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Using a fan while riding indoors, if my main goal is weight loss?

No. Weight lost by sweat is water weight. Your body needs water, and you should replenish lost water as you ride and/or immediately after. People have reduced their weight through sweating to meet an ...
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  • 24.1k
31 votes
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Does a bike exist that is both very light and does not need to be ridden in a hunched over position?

Here's what you need! Lightweight and upright --
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28 votes

Does a bike exist that is both very light and does not need to be ridden in a hunched over position?

Consider trying a recumbent. They fail on your "light" requirement, with weights well above a diamond-frame. However for a crook back, sitting in a comfy armchair is magical compared to being on a ...
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  • 99.2k
25 votes
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Is it worth buying a lighter bike? If so what kind?

IMHO, it's not the weight that is hurting you the most. While weight makes a difference and a lighter bike would be much better, it's too common in cycling world for people to use weight as a proxy ...
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  • 40k
24 votes

Could you reduce the weight of a Santa Cruz Chameleon down from 12.82 kg to 10kg (2018 model)?

Breaking the rules with a kind-of non-answer and personal opinion, but... 1) Mountain bikes should be heavier than a cyclocross bike. It's got a suspension fork and frame and wheels need to be ...
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23 votes
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belt vs chain for what matters performance only

First things first: A belt is probably slightly less efficient than a properly installed clean chain. The test you link already indicates that. Probably with the tension Gates requires you'll loose a ...
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21 votes
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How much does tire pressure affect the weight of the wheels

The ideal gas law (which is a good approximation in this case) says PV=nRT where P is pressure, V is volume, n is mols of gas, R is the ideal gas law constant, and T is temperature in Kelvin. Thus, ...
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  • 45.5k
20 votes

More speed or more distance for weight loss?

Most important - Well done in losing weight, what you are experiencing is very normal, don't let it put you off. A word of warning - despite the common perceptions, most people do not lose weight ...
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  • 40k
16 votes
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Do fat cyclists bonk?

Bonking occurs when your body cannot metabolise stored fat (and muscle protein) fast enough to replace the glycogen reserves, you deplete the reserves in your muscles and liver, and eventually you run ...
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  • 40k
16 votes

Using a fan while riding indoors, if my main goal is weight loss?

My answer is essentially the same as Adam's, but phrased a bit differently. The less adequate your cooling, the lower the power you'll be able to sustain. Power directly correlates with calories burnt....
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  • 19.5k
15 votes
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How much faster will I be if I lose 10kg (from 100kg, all else equal)

According to BikeCalculator, assuming you drop 10 kg while everything else remains the same (power output, etc.), you would travel 0.3 km/hr faster over a 50 km ride, on the average. In other words, ...
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15 votes

Bicycle weight limit (carrying capacity) increase

On a non-folding bike, I'd look at the wheels, and probably replace them with 36 spoke touring wheels and reasonably wide, tough tyres (e.g. 35mm). The tyres absorb some of the shock loads. However a ...
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  • 46.2k
15 votes
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Which part(s) has the greatest slope of price per pound(kg)?

The full answer is long and complicated but the short answer is almost surely 1) the proper air pressure at zero cost (meaning, zero slope in terms of price/kg); followed by 2) latex tubes (at a ...
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  • 13.6k
14 votes
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How does weight influence your speed when descending?

The heavier person will present more area to the wind, but this is mitigated by two factors: The bicycle presents a fixed area to the wind and the area presented by the heavier person is not ...
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13 votes
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The bike Weight and Performance gain for Lightweight riders?

In context of this kind of discussion - weight and cost are the same thing - the more you spend on a bike, the lighter it is (with diminishing returns) and you cannot talk about weight without ...
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  • 40k
13 votes
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Max weight of child, for rear bike seats - why is it always (seemingly) 22kg?

While Criggie's answer explains the reasoning behind the limit, the reason why the official limit is almost always exactly 22kg is simple: that's the standard. The 22kg limit comes from the European ...
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  • 2,080
13 votes

Could you reduce the weight of a Santa Cruz Chameleon down from 12.82 kg to 10kg (2018 model)?

Bontrager's Law states parts can be light weight, durable, or inexpensive you only get to pick two characteristics. The only time it makes monetary sense to replace a part with a lighter one is if ...
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  • 18k
13 votes

Using a fan while riding indoors, if my main goal is weight loss?

No, it does not mean that. Losing water is not weight loss, unless it's the night before a fight (judo, boxing) and you need to get your weight into your weight class, then happily gain it back. Your ...
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13 votes
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Hybrid vs Touring weight carrying capacity

Other points - you've assumed that from this pair, all steel bikes have lower load limits than aluminium ones. a. This is a sample of two, and we can't be confident that either represents the "...
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  • 99.2k
12 votes
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Will increased weight make me go downhill faster?

The main thing you have to consider at speed is drag: The force F on you+bike (mass m) is: F = ma = mg sin Q - F_d - F_rr where a is your acceleration, g is the acceleration due to gravity and Q is ...
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  • 46.2k
12 votes
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Saddlebag Laptop advice

I have carried a laptop on my commute bike for closing in on 15 years now. Mainly in panniers (saddle bags). For a little while in a courier bag when when I was young and dumb. For what it is worth (...
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  • 29.8k
12 votes

Is it worth buying a lighter bike? If so what kind?

I would recommend you wait for one reason Covid. In most parts of the world bikes are in limited supply. Prices even on used bikes are 50% to 75% higher than comparable bikes a year ago. I think you ...
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  • 18k
11 votes

How much does tire pressure affect the weight of the wheels

To calculate the weight of a gas you need the volume, pressure and temperature. A bike tyre is a torus (doughnut) with volume given by the formula: V=(πr^2)(2πR) where R is the radius of the wheel ...
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  • 7,605
11 votes

Are the benefits of light, high end equipment (such as carbon fiber frame) defeated by wearing a backpack?

Per your comment you are currently riding a very cheap bike. Upgrading to a more decent bike will bring a lot of benefits, not just lower weight. Weight is most important when going uphill or when ...
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  • 19.7k
11 votes

Are the benefits of light, high end equipment (such as carbon fiber frame) defeated by wearing a backpack?

I also commute, and my standard carry does not require anything more than jersey pockets. That's ideal. However there are days where I need to move a laptop. On days with a road bike, that means a ...
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  • 99.2k
10 votes

Could you make a bike frame out of 24kt gold?

According to Wikipedia, Gold has an "ultimate tensile strength" of 100 MPa, while steel runs from 400 to 5000. (Carbon fiber laminate is 1600.) Gold has a specific gravity of about 19, while steel ...
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10 votes

What is the weight difference between frame sizes?

According to the Weight Weenies.com web site listed weight can differ from actual weight by as much as 10-13%. One thing you should be aware of is there is some variations between identical frames due ...
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  • 18k
9 votes

How does a bike's weight affect the overall experience of owning it?

I am continuously amazed at the overemphasis placed on the weight of bikes. Yes it is important, but relative to other factors in deciding which bike to buy it is not that significant. Lets compare a ...
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9 votes
Accepted

Reducing Bulk on a touring trip

'Bulk' is mostly about whether all of your luggage will fit in your bags. ie is the volume of your luggage less than the capacity of your bags. So it depends on how much stuff you want to take, and ...
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  • 1,572
9 votes

What is the weight difference between frame sizes?

The important thing to remember is that on a modern road bike, the frame is actually a small percentage of the overall weight of the bike. This frame, including the fork, is advertised at 3 pounds, ...
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  • 21.4k

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