Weight of bike vs weight of rider
Haven’t figured out quite how to explain it but I know if I went out for a hilly run and timed it as fast as I could and then lost 2kg and then went for another hilly run with a 2L (2kg) bottle of coke strapped to my back (theoretically, Ignore the fact this would be uncomfortable etc), I know it would be much slower and more knackering. I apply the same principles to my bike. The lighter weight I have to lug around it feels much more beneficial than loosing the same amount of weight from my body. There must be an explanation but I haven’t thought of it yet.Posted 4 years agowilko1999Member
Rider + bike = total mass that your engine has to propel. Adding 1kg to the bike has the same effect of adding 1kg to your body. The overall mass that your engine has to propel increases by 1kg either way. Anyone searching for an explanation to their own theory is attempting to dispel the commonly accepted laws of physics 🙂
Edit : assuming that the 1kg is fat and you maintain the same power outputPosted 4 years agowobbliscottMember
The TT carbon bike is more aerodynamic, and aerodynamics trumps weight, unless you’re climbing at slow speed. If you lose body weight the reality is it will come with increased fitness, so losing a pound of body weight is always better than losing a pound of bike weight. A pound off your bike is dead weight. A pound off your body comes with additional benefits in fitness.
Upgrading bikes and kit is just nice. Full stop. Nothing to do with achieving tangible and noticeable benefits. No need to justify it. If you want it, and can afford it, and get it past your other half, fill yer boots!
The average person is carrying about 70,000 calories of lard, so plenty of poundage to be going at before you start chasing grams off your bike justifying that its better to lose weight off the bike. Unless you’re sub 10% body fat that justification just doesn’t stick!Posted 4 years agostufieldSubscriber
neither bike are tt, just plain vanilla sit up an beg road bikes. in fact carbon has BIG tubes so probably lot less aero than 1″ headtube steel bike.
Wheels do make a difference, lighter wheels definitely make it easier.
But generally i would agree an xtr rear mech is not going to make you faster unless you are <10% body fatPosted 4 years ago
but some parts do count. In fact I’d say properly set up trail suspension is often heavier than XC parts and that would probably make the average rider faster
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