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azumi wrote:Ozzy, that all sounds scientific.
azumi wrote:What about the gaps between wheels have you considered that in your equation as well
azumi wrote:And why is it that I am with a rocked-setup (76-80-80-76) being faster than those with flat 80 to 84mm setups?
azumi wrote:I just recognized on a few skate nights. They keep pushing, I just roll and still I am faster.
Ozzy wrote:azumi wrote:What about the gaps between wheels have you considered that in your equation as well
That only changes frame size (thus stability), not rolling resistance.
azumi wrote:Bebai, you only say that 'cause you roll flat. Hence your opinion seems quite biased?
azumi wrote:Proof? Since you are so fond of science.
Bebai wrote:Lol...I did try rockered once and it wasn't stable enuf.
Riding on a strong rocker (with only two wheels on the ground) even doubles rolling resistance.
Of course all this ignores air resistance which starts to dominate at around 10-15km/h (depending on body posture and clothing) and goes up quadratically (it quadruples at doubled speed). So while bigger wheels gives you higher speed, the increased air resistance will starting to take its toll (so use tight clothing and deeper posture to reduce wind drag).
An anti-rocker on small wheels is very stable. That's the reason aggressive skater use this setup, because for aggressive skating stability is much more important than maneuverability. So it's possible to drive high speed. At those speeds air resistance dominates, so it's more a question of posture than wheels. Also it was downhill and the street seems to be quite smooth.
That "rockered wheels are much 'keener' to roll and gain speed than flat" is probably because of sub-optimal technique: It's much easier to correct little mistakes with a rocker because turning is easier. So if you hit the street at a slightly wrong angle, it's more easy to just turn the skates a bit during the movement compared to a flat setup. If your stride is correct, this wouldn't matter.
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