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Put it another way.
1) If you buy 0.5kg lighter wheels, and fit them, you'll notice. Strava times will probably not change much.
2) If you lose 2kg of body fat, you don't tend to notice it, but Strava times definitely improve.
So it's about how the bike feels as it responds to your input, not about your actual speed.
Engagement angle of the freehub, also referred to as pick up in some circles.
[quote="molgrips"]You're saying that you can prove with maths that I won't notice lighter wheels?[quote="ghostlymachine"]So identifying *just* the wheel weight in regards to its effect on acceleration is all but impossible.So no, i just said you won't notice the effect in regards to the forwards acceleration and it's already been shown mathematically.
[quote="molgrips"]you just aren't reading my posts properly.Hmmmm.
I think we're all agreeing now, finally!
I guess I just didn't explain my position very well, because it hasn't changed 🙁
So no, i just said you won't notice the effect in regards to the forwards acceleration
Which is what I said [url= http://singletrackmag.com/forum/topic/turning-weight/page/2#post-8040031 ]11 hours ago.[/url]
So we do agree, and we did from the start.
I was just jesting when I was talking about placebo wheels but it seems even knowing it's a placebo it can still have an effect.
Sorry for bringing this one back to life.
but that is the 'real' placebo effect, i.e. body making itself better by mentally believing/ willing etc,.
I suppose the body could generate a bit more power if mentally you think you are faster with the new wheels but that still doesn't mean you can feel the difference in acceleration. Feeling something and a placebo effect are two different things when it comes to any form of testing them.
I have my own classic example of where test method gives bad/ less meaningful results...
On Tuesday, I set a new Strava PB getting to work, 4.7 miles in 16mins20secs (knocking ~1min15secs off my previous best) on the FatNotFat wheels with 38c Marathon Cross (~4.2Kg).
The thing is, I've had the sniffles this week and I feel a little fatigued, that time improvement was purely down to a better run through the ~12 traffic lights.
Still only 2mins26secs quicker than my best of two runs with the default fat wheels with 4.0" Jumbo Jims (~7.2Kg). I've lost ~2Kg since the fat runs, down to ~80Kg before kitting myself up for work (so ~84Kg), from very bad memory the bike on our dodgy bathroom scales is ~10.5/13.5Kg (skinny/fat setup).