Gary Fisher 29er

29er

Category:

Sports

Tags:

• Gary
• Fisher

[saintlybill]

Poor bear!!!! must be a Chinese zoo

[ElectronicPleasure]

acceleration, flex, Durablity, weight, Strength were not considered?

[technolung]

@bigpizzaguy Then you get a small frame. Wheel size is not a factor in determining proper frame size.

[bennett346]

@SurvivalistMedia so by listing the suvat equations you've proved what?

[footballphenom34]

@deth84 That's a common misconception. Although the surface area is increased, along with friction at the point of contact, it does not effect the drag because it is static friction between the tire and the ground, not kinetic- (the reason it's more effient let the tires still roll when braking hard). This means the only reason a 29er would roll slower, is because of friction in the hub or other parts of your bike. *29ers have significantly high rolling resistance at low tire pressures.

[tjlep]

@deth84 You've got that just a little bit backwards. The friction between the tires and the ground is what drives you forward, this is why tires have treads on them. Otherwise we would all go mountain biking with greased up street tires, right?

[bigpizzaguy]

they forgot something else what if your smal ?

[SurvivalistMedia]

@Krinkels6666 Add to that Rolling Resistance: Wikipedia has a decent explanation the symbols needed to express the equations are not available on YouTube comments

[Krinkels6666]

@SurvivalistMedia You haven't actually put width into your Equations... also, D should be S.

[SurvivalistMedia]

I know racing style are mostly 29" wheeled bikes these days. Their tires however are different animals entirely designed to decrease friction and rolling resistance and create a stable yet minimal contact patch. The physics are changed completely with the shift into MTN bike tires by width alone, even without factoring in the aggressive tread

v=d/t

d=ut+(1/2)a(t^2)

v=u+at

v^2=u^2+2ad

'u' = initial velocity

'v' = final velocity

See I'm right, I think? Maybe?

[SurvivalistMedia]

@Krinkels6666 I meant a 29" mtn bike for frequent pavement rides. The aggressive tread combined with the large contact patch do make them harder to accelerate & maintain speed because of increased friction. At least harder than a 26" wheeled mtn bike with a similarly aggressive tread pattern. Therefore for in-town style pavement rides I feel the 26" wheeled mtn bike is far easier to use.