The long-standing assumption has been that the heavier your bike is, the more reliable it ought to be. Whether that's borne out in reality is a different matter, but luckily there are some knock-on benefits to a heavy bike besides the hope of durability. Stiffness, suspension performance, and stability can all be aided by some extra chassis weight, but then again you still have to lug the thing up some big hills. It makes sense that we're still seeing downhill racers strap lead weights to their bikes, but I don't think the pro XC field is going to see the same behavior any time soon.
My personal bikes tend towards the higher end of the weight spectrum, mostly due to my fondness for big polished chunky aluminum components, but also because I tend to find that beefier parts tend to last longer. Whether you're in my camp or full on the other end of the spectrum, weigh that bike, and add that fateful (but luckily not all that important) number to the list below.
We've asked you how much a bike of a given category
should weigh, and we've asked you how much
your bikes weighed a few years ago. As it's been a while since we've run this poll, and with bike weights seemingly creeping up with time, it felt worth revisiting.
you can see it if you watch suspension on motorbikes passing by, it works like nuts, while on a light bike + rider the chassis gets thrown around instead of suspension working
Acceleration due to gravity does not have a mass component. (force of a falling object is a function of mass, but acceleration is not a function of mass).
I'd love a 35-pound bike I can pedal uphill as fast as my 24-pound bike.
Regardless, neither a matchbox car nor a mountain biker is approaching terminal velocity. And in fact, both the matchbox car and the mountain biker would fall at the same rate.
That’s the surface area of the feather affecting the result.
Drop a bowling ball, and a baseball, let one land on yer head, and let me know the result….
(Check out Galileo been around for a while)
Air resistance has something to say.
You might consider momentum and inertia too.
But your going to accelerate at 10m/s²
Towards the centre of the Earth
Hopefully that helps you see what's going on.
TEN?
Sorry I had to make a second comment, but it had to be pointed out
Bike dorks are always nerding things up with their "erm, um, yes, but the leverage curve of the suspension..."
Lighter is better, when “you” are the motor…
Bigger and heavier bikes descend better, because everything is bigger( there is more stuff to absorb all the impacts better).
Motocross bikes weigh hundreds of pounds and guess what, they jump better and descend better too.
BUT, if you have to pedal uphill( without a motor), or for more than a few hours, lighter is better. For me, keeping a trail bike under 30lbs is my goal.
I’m still on board for billion lbs bike that can be ridden like a 32lbs bike, you probably don’t even need to lock it up
Also… do smaller lighter riders need the same amount of travel to ride the same terrain (at comparable speeds)?
Is a 140lb rider better off with a Fox34… and a 220lb rider better off with a 36 or 38 at the same travel?
Do heavier riders need tougher casings, rims, and higher spoke counts to get the same feel and durability?
On one hand, if there were BIG advantages to be had, I’m sure we would see this reflected more on the EWS circuit.
But as a rider who weighs 150-155lbs, I notice a really big difference when I drop 5lbs off a bike. Much more than when I drop 5lbs off my body. The place I notice this the most is on technical, undulating terrain like we have here in NW Arkansas. The more I’m moving the bike around, up and over obstacles, etc the more I notice the difference. But there’s a limit… a really light bike feels like it’s ping ponging off of every tiny obstacle.
The point being > terrain, style, rider weight… it’s all a factor.
For riding up forrest roads and down bigger mountains at higher speeds, I’ll happily take the 32-34lb bike.
He said "That looks heavy"
I said "Well I guess I'll get a better work out then"
He said "Yeah... I guess you're right"
I climb for the workout, I descend for the fun. Pretty simple math.
Perceptually, it seems like a "constant" during climbs - but if you stop applying sufficient force, you will stop climbing almost instantly. In truth, climbing is a constant "acceleration" against the opposing force of gravity. Because this acceleration results directly from the rotation of your wheels against the earth, heavier wheels (this effect is increased with larger wheel diameter) and tires result in less acceleration per the same amount of power input to the system.
i mean if i had to chose to do a 1000 m climb, and had as option a 18 kg hardtail or a 14 kg downhill bike, i´d take the first anytime of the year...
Rolling resistance is just layman's for friction
Try thinking of the direction of the different forces and try to find a way for friction between the tyre and the ground to act in opposition to the direction of travel without the wheel being locked.
Seriously, do they not teach physics in schools anymore, or did your teacher just tell you to look up some marketing buzzwords on a website?
Why don't you just explain under what circumstances friction between tyre and ground can act in the opposite direction to the travel of the bike.
There are lots of explanations of this on line if you don't believe me. The scwalbe one was just convenient to find and it's hardly marketing is it?
They weigh what they weigh - I don’t really care! Every new bike I buy is heavier (and bigger and tougher) than the one before, but rides better.
The freeride bike is a full 2006-era build, 47lb on the scale last summer.
The one I actually ride most is the commuter, with the racks, fenders, and bags for my lunch, change of clothes, and camera it's 50+lb
But bike weight never really mattered to me, at my lightest riding weight I was 175lb, now I'm around 250, so I've always gone for parts that'll hold up, instead of worrying about grams.
From experience I'd say that heavy weight doesn't automatically mean durability. Ironically, I've never had any problems with carbon frames, not even lighter ones, while the frame of the heaviest alloy bike I owned (Commencal Meta) cracked at the main pivot.
If anyone finds my buy/sell this is all a lie and the FS is the best thing since sliced jelly and my loss is your gain.
Not sure I'd call bike weight a myth though. There are times it really does matter, even on the descents. Like if your trails have lots of short, punchy DH segments (say less than a minute), having a light bike that accelerates quickly without much effort can be the difference between ridiculous fun and kinda boring. A lot of the dessert trails I ride are like that. A near 30 pound bike with fast rolling tires really shines here.
Weight means a LOT more than climbing against gravity in mountain biking
the pros/real riders are so far beyond just doing that