Bikes: Tire Recommendation

[someone]

On 10 June, 21:02, someone <thirty-...@live.co.uk> wrote:
> On 10 June, 17:20, jobst.bra...@stanfordalumni.org wrote:
>
>
>
> > Bland Otter wrote:
> > >>>> Strangely, only Continental needs to apply some bizarre
> > >>>> exo-skeleton to their tires to keep them from fraying.
> > >>> Shhhh, it's for selling!
> > >> So is the rather useless decorative tread patterns on the Paselas.
> > >> The question is, does the Duraskin work? *Does a Kevlar/Polyimide
> > >> net reduce the amount of sidewall ripping if cut by a stone
> > >> compared to skin-wall tires without such a net? *Sounds reasonable
> > >> to me since Kevlar can be pretty tough to cut through. *Of course,
> > >> just because it sounds reasonably doesn't mean it is true, but I am
> > >> curious to know why you imply that that it has no function besides
> > >> being a sales gimmick?
> > > I'm sorry, it also serves the function of increasing the rolling
> > > resistance.
> > > Cut sidewalls on a properly inflated road tire is a rare occurrence
> > > unless you're a slob of a rider. *If this protective mesh was so
> > > important for durability, why haven't all MTB tire makers adopted it
> > > as standard, as the risk of sidewall abrasion is far more likely off
> > > road?
>
> > I noticed the same feature on Michelin road slicks that I rode years
> > ago. *I suspect that it has something to do with the fiber length of
> > the fabric used in making the casing. *As I recall, Clement made a
> > point of using "long fiber Egyptian Cotton" in their cotton tires
> > while silk thread can be made almost as endless as polymer fibers.
>
> It's called staple length, it only becomes fibre when spun into a
> thread. *Continental have been using poly(ester)-cotton mixed thread
> for a long time. I would think that with testing, undesirable
> characteristics of this and especially totally synthetic polymer
> casings have made them decide that protection is best so as not to
> have a silk like blow out. *Short staple thread will part easier, but
> a fine endless thread (read high TPI silk and synthetic) used at its
> limit of strength will snap with the slightest of nicks. *The use of
> fine, long staple cotton thread means higher staple quantity is used
> for the same strength thread and so there is a greater redundancy
> preventing sudden failure. *A high strength material used at its limit
> will always fail suddenly and completely.
>
> Silk threads are as long as the width of the casing requires (when the
> tyre is made) about 80mm. *I forget what the classification for long
> staple (sometimes Egyptian) cotton is, it may be 75mm. *If this is so
> and is used in a tyre, then it would explain the pressures which are
> attainable with cotton casings even though advice is to the contrary.

Extra long staple cotton is called pima cotton when sourced in merica
and is over 37mm long. Egyptian cotton can be over 60mm, this would
be specified by the yarn spinners. I think this would be the
requirement for high grade fine casing tubulars, a single ply yarn
with low dernier giving a super supple weftless 'fabric' laid over
another with a minimum of latex between.

[Art Harris]

AMuzi wrote:
> > What happened to IRC?
> >
> > The Road Winner and Triathlon
> > are pretty nice tires at a great price point, but a quick search just
> > shows old stock in 20" and 27" left for road.
>
> IRC bicycle division is defunct
>

Sorry to hear that. I've got at least ten old-style 700c x 28 Road
Winners stashed away for futue use. Quality went down when they
switched production from Japan to Korea, so I guess their demise was
inevitable.

The Road Winners were great for mileage and flat resistance.

Art Harris

[Ozark Bicycle]

On Jun 10, 11:20 am, jobst.bra...@stanfordalumni.org wrote:
> Bland Otter wrote:
> >>>> Strangely, only Continental needs to apply some bizarre
> >>>> exo-skeleton to their tires to keep them from fraying.
> >>> Shhhh, it's for selling!
> >> So is the rather useless decorative tread patterns on the Paselas.
> >> The question is, does the Duraskin work? Does a Kevlar/Polyimide
> >> net reduce the amount of sidewall ripping if cut by a stone
> >> compared to skin-wall tires without such a net? Sounds reasonable
> >> to me since Kevlar can be pretty tough to cut through. Of course,
> >> just because it sounds reasonably doesn't mean it is true, but I am
> >> curious to know why you imply that that it has no function besides
> >> being a sales gimmick?
> > I'm sorry, it also serves the function of increasing the rolling
> > resistance.
> > Cut sidewalls on a properly inflated road tire is a rare occurrence
> > unless you're a slob of a rider. If this protective mesh was so
> > important for durability, why haven't all MTB tire makers adopted it
> > as standard, as the risk of sidewall abrasion is far more likely off
> > road?
>
> I noticed the same feature on Michelin road slicks that I rode years
> ago. I suspect that it has something to do with the fiber length of
> the fabric used in making the casing.

As usual, you "suspect" wrong! Go back and take a look at the way the
old Michelin Supercomp HD tires were constructed.

Why don't you do your homework before you stick your snout into a
thread?

BTW, why are you avoiding answering this question (asked earlier):Have
you ever installed a Shimano Octalink crank on an Octalink BB spindle?
A simple "Yes" or "No" will suffice.

[landotter]

On Jun 11, 8:17*am, Art Harris <n...@***********m> wrote:
> *AMuzi wrote:
> > > What happened to IRC?
>
> > > The Road Winner and Triathlon
> > > are pretty nice tires at a great price point, but a quick search just
> > > shows old stock in 20" and 27" left for road.
>
> > IRC bicycle division is defunct
>
> Sorry to hear that. I've got at least ten old-style 700c x 28 Road
> Winners stashed away for futue use. Quality went down when they
> switched production from Japan to Korea, so I guess their demise was
> inevitable.
>
> The Road Winners were great for mileage and flat resistance.

The only two flats I've ever had on IRCs were due to road debris
pinches. One in front of a synagogue, the other in front of an
Episcopalian church. I don't think it's coincidence, but an interfaith
conspiracy.