DaveReading
Don't suffer fools gladly (must try harder!)
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I find they roll fine but they are slow to wind up to speed because of the colossal weight.
I'm afraid you have Newton's second law of motion to thank for that.
I find they roll fine but they are slow to wind up to speed because of the colossal weight.
Just suck water into a standard hand pump and fill the tyre. The trick is to convince yourself that you can or can't feel it. Therefore, play the trick on an unsuspecting riding buddy and ask if he/she noticed anything.OK ... hands up who has taken up YS on this challenge? I've got as far as mentally designing a modified track pump for delivering the water.
I'm wondering whether to stop at water, there are higher density liquids available. Mercury tyres anyone?
I'm wondering what effect the incompressibility of water would have on the ride.
It is meaningful. Really meaningful.Just wondering how meaningful the rolling resistance test is. OK you may compare one tyre with on other but once out on our rough old roads are really going to notice the difference? May be if the road is dead smooth like the rolling test machine, but otherwise I think the result is meaningless.
Just suck water into a standard hand pump and fill the tyre. The trick is to convince yourself that you can or can't feel it. Therefore, play the trick on an unsuspecting riding buddy and ask if he/she noticed anything.
But, I wasn't rubbishing the claim because of a subjective experiment. I'm rubbishing it based on doing the calculations. I've done them before and posted them on here.
What would you hope to achieve with this experiment? The water would roll around the tyre internally, with friction therefore being a factor in addition to extra weight. You would therefore be attempting to test two variables (at least) with one "test", which isn't good science.
It's just 20% more rolling resistance...this doesn't mean 20% slower.Ahh, this is the site I remember seeing before on rolling resistance tests.
OK, so its about 20% slower which is also my avg speed difference. At least I know I am not slacking.
.......Try it and report back. The experiment is super easy, harmless and startling. .......
Thanks for the interest.No. I don't accept that it is harmless, and frankly, it doesn't make a blind bit of difference to me either way. I was merely interested in the poor design of your suggested experiment.
You can't even feel it if you add two kilos of "rotating weight" to your wheels.