Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-02 Thread Patrick Moore
Well, he discounted air drag from fatter tires; but I think I find that fatter, and taller too, tires slow me down in a strong headwind compared to 28s or 32s. And big fat 29er knobbies definitely have more wind drag in headwinds! On Tue, May 2, 2017 at 5:48 PM, John Stowe

Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-02 Thread John Stowe
Jan's testing method involves actually riding down a road, so air resistance should play into his results - at least at testing speeds (wind drag rises with the square of velocity) - which is another reason to trust his results more than those from a smooth, stationary roller. -- You received

Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-02 Thread Patrick Moore
On Tue, May 2, 2017 at 10:32 AM, panog wrote: > Actually 3 questions, if we add the "where to stop adding more suppleness > to an already supple tire?". > True. > > [...] To me and my cycling exposure, the need for the extralight casings > is just noise; I do use

Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-02 Thread panog
Actually 3 questions, if we add the "where to stop adding more suppleness to an already supple tire?". I absolutely agree with your statement regarding the esoteric nature of the perceived handling differences between wheel sizes simply due to the fact that the absolute judge of what feels

Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-02 Thread Patrick Moore
Yes, the benefit of casing suppleness is principally lower rolling resistance, though I find that more supple tires are also more comfortable at a given tire pressure (and, OTOH, that they often require a higher pressure to avoid sidewall flop than do tires with stiffer sidewalls). We've got 2

Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-01 Thread ted
And how much he or she cares about that difference -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post

Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-01 Thread panog
The principal benefit of the greater suppleness is reduced rolling resistance, reduced hysteric losses and thus greater speed for the same watt input. The real question though is at which point we have diminishing returns. I dont think that this is a one-answer-fits-all as I believe its greatly

Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-01 Thread Patrick Moore
Yeah, but his tests were to my judgment not conclusive. How do you "prove" that this handling is better than that? And for whom? Once again, my own experience, which is extensive, if not as extensive as Jan's, contradicts this opinion. The principal benefits of the extralights is not weight, or

Re: [RBW] Re: Which Compass tires for a Sam Hillborne riden on pavement

2017-05-01 Thread Patrick Moore
Jan theorizes that there is an optimum diameter -- and absolute number -- for optimum handing, and that this correlates more or less to 622 X 32, 584 X 40 or 42, and 559 X 50. I don't buy it, since the best handling bikes (thanks again, Grant!) I've ridden were designed for 559 wheels with tires