Are there any polyester bicycle tires out there?...

I am pondering switching to polyester for the main casing thread. Nylon
has the tendency to lengthen when wet, and that leads to sizing issues
(that don't exist with conventional tires).

Polyester is slightly less strength than nylon would be, but the margin
of error in that respect is huge anyway. The other differences between
the two wouldn't seem to be significant.

On Mon, 16 Sep 2013 17:10:25 -0500, Doug Cimperman
wrote:

I am pondering switching to polyester for the main casing thread. Nylon
has the tendency to lengthen when wet, and that leads to sizing issues
(that don't exist with conventional tires).

Polyester is slightly less strength than nylon would be, but the margin
of error in that respect is huge anyway. The other differences between
the two wouldn't seem to be significant.

See http://www.challengetech.it

--
Cheers,

John B.

polyester cheaper than aramid big time.
so. Vectran is what ?

prob others.

one interesting game was or is gong thru these names for nylon ect.

start with Colorado Cyclists...try the outdoor clothing people...in Campmor REI

there are tutorials prob UTUBERS

AHHH PHOTOSPREAD....ALL TIRES ARE HANDMADE. AFAIK

cycle tires are low speed low heat low flexure speeds around the contact area. Not auto friction.

So polyester when finished off/processed/cured/boiled/bleached/variouschemicals added...for cycle fabric first the bill.

Ima polyester T shirts user in a hot climate hwere poly T's are maybe 3-4 times cooler than poly/cotton if the cotton is left dry.Wet poly/cotton is cooler.

There are different polyester weights weaves and comfort/use levels as 'layering' every year. Arizona/CalHP has a coarse thin weight gray poly is best hot weather T. Champion has a new breathe thru that's AAA in gray long sleeve crew. The short sleeve gray is too heavy for extra hot but the orange is OK.

Prob find the same in tire fabrics.

Vectran is Conti's name for Conti poly. Conti may have direct access to the mill for quality control and assurance. Schwalbe may not ndt with the fattier grop, exact spec may produce less finished effect.

To be correct, I doahno what the effect is. I assume longevity then performance as longevity qualities diminish. Maybe turn in.

On Mon, 16 Sep 2013 23:10:56 -0500, Doug Cimperman
wrote:

I can't even try using silk, since I can't find anywhere that sells long
spools of it. When I searched, all I ever found was places making fabric
(that isn't useful, since it is woven) and places selling silk cut to
length and dyed for embroidery.

http://www.superiorthreads.com/ sells silk sewing thread.

Lacemaking-supply houses such as Lacis, Snowgoose, and Van Sciver also
sell silk threads.


--
Joy Beeson
joy beeson at comcast dot net
http://www.debeeson.net/joy/
The above message is a Usenet post.
I don't recall having given anyone permission to use it on a Web site.

On 9/16/2013 7:39 PM, John B. wrote:
On Mon, 16 Sep 2013 17:10:25 -0500, Doug Cimperman
wrote:

I am pondering switching to polyester for the main casing thread. Nylon
has the tendency to lengthen when wet, and that leads to sizing issues
(that don't exist with conventional tires).

Polyester is slightly less strength than nylon would be, but the margin
of error in that respect is huge anyway. The other differences between
the two wouldn't seem to be significant.

See http://www.challengetech.it

--
Cheers,

John B.


I wonder why they are using it? Maybe they make the base fabric
themselves, being a tubular manufacturer.

I never found out much about making tubulars, from either reading or
videos. The Vittoria video doesn't tell you anything worthwhile.

-----

I can't even try using silk, since I can't find anywhere that sells long
spools of it. When I searched, all I ever found was places making fabric
(that isn't useful, since it is woven) and places selling silk cut to
length and dyed for embroidery.

On 9/16/2013 7:50 PM, datakoll wrote:
polyester cheaper than aramid big time.
so. Vectran is what ?

prob others.

one interesting game was or is gong thru these names for nylon ect.

start with Colorado Cyclists...try the outdoor clothing people...in Campmor REI

there are tutorials prob UTUBERS


Kevlar could be used but wouldn't be good for the whole tire fabric,
because of its self-abrasion characteristics.

As it flexes the long fibers rub into each other and break up into short
fibers, and it loses all its strength. There is no way to reliably
predict the issue, destructive testing is the only way to measure it.

A kevlar-lined tire might have a lot of puncture resistance when you
first put it on, but might not have that much 500 or 1000 miles later.
I've never seen any tech data about this type of (kevlar) wear, but many
of the bicycle tire companies stopped using it as their
puncture-resistant layer.

On 9/16/2013 10:27 PM, Joy Beeson wrote:
On Mon, 16 Sep 2013 23:10:56 -0500, Doug Cimperman
wrote:

I can't even try using silk, since I can't find anywhere that sells long
spools of it. When I searched, all I ever found was places making fabric
(that isn't useful, since it is woven) and places selling silk cut to
length and dyed for embroidery.

http://www.superiorthreads.com/ sells silk sewing thread.

Lacemaking-supply houses such as Lacis, Snowgoose, and Van Sciver also
sell silk threads.



Lots of places sell it, but they don't sell it in industrial quantities.

I would want it uncolored (dye is just money wasted for my use) and on
big spools. 2-4 lb spools, 15,000-30,000 yards. A single larger-size
tire will use ~800 yards at once.

Also I don't see a great need for it really. Most high-end tires (even
most tubulars) don't use it.

On Mon, 16 Sep 2013 23:10:56 -0500, Doug Cimperman
wrote:

On 9/16/2013 7:39 PM, John B. wrote:
On Mon, 16 Sep 2013 17:10:25 -0500, Doug Cimperman
wrote:

I am pondering switching to polyester for the main casing thread. Nylon
has the tendency to lengthen when wet, and that leads to sizing issues
(that don't exist with conventional tires).

Polyester is slightly less strength than nylon would be, but the margin
of error in that respect is huge anyway. The other differences between
the two wouldn't seem to be significant.

See http://www.challengetech.it

--
Cheers,

John B.


I wonder why they are using it? Maybe they make the base fabric
themselves, being a tubular manufacturer.

I never found out much about making tubulars, from either reading or
videos. The Vittoria video doesn't tell you anything worthwhile.

-----

I can't even try using silk, since I can't find anywhere that sells long
spools of it. When I searched, all I ever found was places making fabric
(that isn't useful, since it is woven) and places selling silk cut to
length and dyed for embroidery.


I'm working from memory, a somewhat fallible facility, but I remember
when the "new" tires first came out they got flat on the bottom from
parking over night and when you started out they went lump, lump,
lump, until they warmed up a bit. Somewhat later a different kind of
tire became available that didn't go lump, lump. People said that the
original tires were made of nylon and later type were made from
polyester.

--
Cheers,

John B.