Block user

Recent

VoidWanderer RichardCunningham's article
Jul 29, 2013 at 13:15
Jul 29, 2013
650B For Giant's 2014 Elite-Level Mountain Bikes
Willie1, I'm just sick and tired of this "holy grail" crap. 650b is just a wheel size. And it is not better than 26" or 29". At all. And it had not "inherited best of two worlds". It's just a wheel that behaves almost like a 26", but slightly bigger. With all it cons and pros. But they have a WorldCup winner on 650b wheels and a good-looking (but crippled) arguments, so we are now the spectators of the eclipse of 26" trail bike. Not because 26" were worse, just because it was decided that 26" stuff (wheels, forks, tires) is obsolete.
VoidWanderer RichardCunningham's article
Jul 29, 2013 at 2:46
Jul 29, 2013
650B For Giant's 2014 Elite-Level Mountain Bikes
Okay, guys, if you're lazy enough to believe those statements without a word and can't do the math for yourselves, I'll give you exact numbers. Given wheel sizes: 673mm for 26", 698mm for 650b and 736mm for 29". And we have a 3 inch square edged obstacle. Angles of attack: 26" - 13.76° 650 - 13.51° 29" - 13.15° 2 inch square edged obstacle? Not a problem: 26" - 11.20° 650 - 11.00° 29" - 10.71° Anyone sees that 650b is closer to 29"? Not me. Now to contact patch. Anyone knows what is the circumference of a circle? It's formula is as simple as it can be: π*d, where d is diameter and π is constant 3.1415... Wheel circumferences: 26" - 2114 mm 650 - 2193 mm = 3.5% bigger than 26" 29" - 2312 mm = 9% bigger than 26" And do you know what is contact patch? It's just a fixed fraction of total wheel circumference. Anyone knows why in Giant's poster 650b is suddenly closer to 29" in contact patch? I'll tell you what - it's not about physics or math. It's about company that is interested in selling new standard. Period.
VoidWanderer RichardCunningham's article
Jul 28, 2013 at 5:43
Jul 28, 2013
650B For Giant's 2014 Elite-Level Mountain Bikes
Same applies for contact patch. 650b wheel is only 25mm larger than 26", so it behaves almost like 26". Who the f*ck made those rigged calculations?
VoidWanderer RichardCunningham's article
Jul 28, 2013 at 5:32
Jul 28, 2013
650B For Giant's 2014 Elite-Level Mountain Bikes
>A 29-inch wheel rolls over a 6-centimeter square-edge obstacle 14% more efficiently than a 26-inch wheel >does. In comparison, a 27.5-inch wheel rolls over the same obstacle 9.8% more efficiently than a 26-inch wheel does. What a bunch of crap. The dependency of efficiency on wheel size is strongly linear. If "29-inch wheel rolls over a 6-centimeter square-edge obstacle 14% more efficiently", then 650b will have only 5.6% increase in efficiency. Do your math better, Giant.
VoidWanderer mikelevy's article
Jul 26, 2013 at 5:20
Jul 26, 2013
Pinkbike Poll: The Demise of 26'' Wheels - Unnecessary Extinction or Natural Evolution?
All this 27.5" hype is all about the "golden ratio" between 26" and 29", as salesmen says. But this is only words. We can claim exactly the same - that 26" is best compromise between 24" and 29". Also, 27.5 has benefits AND DRAWBACKS comparing to 26". So how can it be called 'evolution'?? It's just a bit different, not 'better'! Just a bit other riding experience. It's like comparing oranges and apples. And lets not forget that the real difference between 26" and 27.5" is only 25mm (1 inch), so the 650b benefits that are claimed are so small that are almost impossible to measure.
Added 2 photos to Gearbox
Dec 21, 2012 at 6:43
Dec 21, 2012
Load more...
You must login to Pinkbike.
Don't have an account? Sign up

Join Pinkbike  Login


Copyright © 2000 - 2024. Pinkbike.com. All rights reserved.
dv42 0.019622
Mobile Version of Website