After Market Wheelsets

I wonder why I rarely see: CR-18 (or Alex), shimano deore hubs, DT 2.0
champion spokes with DT nipples for $100 each.

In article <[email hidden]>,

Colin Campbell said:

Yesterday, after three months of waiting, my wheels were delivered. I
have had fancy new tires waiting to go on for an even longer time.

I ordered Easton EA90 Aero wheels, which are aluminum wheels with black
hubs and rims, and silver bladed spokes. The tires are Vittoria Open
Corsa EVO-CX, CSC 2007 Limited Edition, which means all red - tread,
sidewalls, bead - everything. (The 2008 CSC tires are black with a red
tread, and due to the Dollar's weakness, cost another $11 over last
year's price.)

I was replacing Bontrager Race Lite wheels and tires.

I weighed each of the old wheels, then I swapped my cassette onto the
new rear wheel, and weighed each new wheel. The new wheels were 90 gram
in front and 140 grams in the rear lighter (0.5 pounds).

People have told me the Open Corsas ride very nicely, and I thought,
"Yeah, right." But this morning, they really did seem to soak up some
of the bumps. I had them inflated to just under 8 bars (115 psi) - they
are rated for 8 - 10 bars on the sidewall. Maybe I should go higher, to
see how they react.

People have also said on the Internet that the tires are only good for
about 1000 miles. I guess all I can do is ride them and find out for
myself....

I got the tires for just over half the retail price (because my daughter
is a CSC employee), and the wheels were a club deal - a really good
deal! So, thus far, I have to say I'm very happy with my improved bike.
I'm pretty sure I'm going to start spending a few extra bucks to ride
folding tires instead of wire bead versions of the same tire from now
on, too. (I been riding wire bead versions of Vittoria Rubino Pro on
one bike, and Bontrager Race Lite Hard Case tires on the other.)

The Bontrager wheels are probably going onto the older bike, which now
had shop built wheels with Record hubs, 32 DT Swiss spokes, and a Mavic
Open Pro rim up front and a Velocity AeroHead on the rear. That will
probably lighten that bike by 200+ grams as well, maybe more.

Soon, I may have trouble keeping the bikes earthbound!

Kevlar bead has no advantage over steel bead once it
is mounted on the bicycle. They ride the same.

--
Michael Press

Michael Press said:

Kevlar bead has no advantage over steel bead once it
is mounted on the bicycle. They ride the same.

They are lighter, which some view as an advantage.

DR

datakoll aka gene daniels said:

I wonder why I rarely see: CR-18 (or Alex), shimano deore hubs, DT 2.0
champion spokes with DT nipples for $100 each.

Stop being sensible!

--
Tom Sherman - Holstein-Friesland Bovinia
The weather is here, wish you were beautiful

Off course. that's why the industry layed out the $$$ converting
entire factories to kevlar bead so they could stay uncompetitive.
Sure, that makes sense.

Neber one to quibble over an ounce here or there nuntheless doesnot
mean Ima not gonna notice what extra revolving weight does to forward
effort. I found 9 extra grams on the front wheel of a weighty 10 speed
iszza drag.

Then there's the problem of mounting tire and removing bead rubbah.
Looks like bead rubbah on kevlar survives pulling prying and sliding
from the crank bro superduper tool lots more than wire bead rubbah.

datakoll said:

Off course. that's why the industry layed out the $$$ converting
entire factories to kevlar bead so they could stay uncompetitive.
Sure, that makes sense.

but they're not just aramid bead - some use fiber belts under the tread
for puncture resistance. among the high end tires, that's a significant
proportion.

Quoted message said:

Neber one to quibble over an ounce here or there nuntheless doesnot
mean Ima not gonna notice what extra revolving weight does to forward
effort. I found 9 extra grams on the front wheel of a weighty 10 speed
iszza drag.

Then there's the problem of mounting tire and removing bead rubbah.
Looks like bead rubbah on kevlar survives pulling prying and sliding
from the crank bro superduper tool lots more than wire bead rubbah.

not to mention that it folds handily.

In article
<[email hidden]>,

DirtRoadie said:

Michael Press said:

Kevlar bead has no advantage over steel bead once it
is mounted on the bicycle. They ride the same.

They are lighter, which some view as an advantage.

How much lighter?

--
Michael Press

Michael Press said:

In article
<[email hidden]>,

DirtRoadie said:

Michael Press said:

Kevlar bead has no advantage over steel bead once it
is mounted on the bicycle. They ride the same.

They are lighter, which some view as an advantage.

How much lighter?

Vittoria Open Corsa EVO CX in size 700 x 23 is said to weigh 230 g.

Vittoria Rubino Pro with kevlar bead is also 230 g.

Vittoria Rubino with wire bead is 310 g.

Bontrager Race Lite Hardcase with wire bead is 330 g. That's what I
have on my Bontrager Race Lite wheels, so most of my weight savings
seems to have come from changing the tires.

If I really saved 200 g with the different tires, the Easton wheels may
be heavier on the front, and only 30 - 40 g lighter in the rear.

datakoll said:

I wonder why I rarely see: CR-18 (or Alex), shimano deore hubs, DT 2.0
champion spokes with DT nipples for $100 each.

http://www.bikemannetwork.com/biking/p/WECRDIM/WE8797
http://www.bikemannetwork.com/biking/p/WECRQWH/WE7041

Colin Campbell said:

Yesterday, after three months of waiting, my wheels were delivered. I
have had fancy new tires waiting to go on for an even longer time.

I ordered Easton EA90 Aero wheels, which are aluminum wheels with black
hubs and rims, and silver bladed spokes. The tires are Vittoria Open
Corsa EVO-CX, CSC 2007 Limited Edition, which means all red - tread,
sidewalls, bead - everything. (The 2008 CSC tires are black with a red
tread, and due to the Dollar's weakness, cost another $11 over last
year's price.)

I was replacing Bontrager Race Lite wheels and tires.

I weighed each of the old wheels, then I swapped my cassette onto the
new rear wheel, and weighed each new wheel. The new wheels were 90 gram
in front and 140 grams in the rear lighter (0.5 pounds).

People have told me the Open Corsas ride very nicely, and I thought,
"Yeah, right." But this morning, they really did seem to soak up some
of the bumps. I had them inflated to just under 8 bars (115 psi) - they
are rated for 8 - 10 bars on the sidewall. Maybe I should go higher, to
see how they react.

People have also said on the Internet that the tires are only good for
about 1000 miles. I guess all I can do is ride them and find out for
myself....

I got the tires for just over half the retail price (because my daughter
is a CSC employee), and the wheels were a club deal - a really good
deal! So, thus far, I have to say I'm very happy with my improved bike.
I'm pretty sure I'm going to start spending a few extra bucks to ride
folding tires instead of wire bead versions of the same tire from now
on, too. (I been riding wire bead versions of Vittoria Rubino Pro on
one bike, and Bontrager Race Lite Hard Case tires on the other.)

The Bontrager wheels are probably going onto the older bike, which now
had shop built wheels with Record hubs, 32 DT Swiss spokes, and a Mavic
Open Pro rim up front and a Velocity AeroHead on the rear. That will
probably lighten that bike by 200+ grams as well, maybe more.

Soon, I may have trouble keeping the bikes earthbound!

I've gone a similar route. I'm really anxious to find out how it
changes the ride or if I even notice it. I'm not deluding myself into
thinking that it will be a night and day difference, but what the
heck, I'm rewarding myself for a weight loss goal. Not too expensive
a deal either. I have a feeling the things I notice are the general
feel of the tires more than anything.

Old: Mavic Aksium wheels with generic (Forte) tires and tubes.

I switched to Reynolds Race wheels, Pro Race II tires and light tubes
(not super light).

Weight loss for wheels and skewers was about a pound (15.9 oz)
Weight loss for tires and tubes was almost another pound (15.2 oz)

I lost another 3/4 or so pound changing my bars, stems and pedals (all
of which had to be changed due to fit issues, but I spend a little
more on each to get lighter weight).

I hope I can start riding and stay away from Ebay!

I will probably take my first ride of the spring tomorrow, but I am
going to restrain myself and put 100 miles on the old wheels and tires
before I change.

In article <[email hidden]>,

Colin Campbell said:

Michael Press said:

In article
<[email hidden]>,

DirtRoadie said:

On Apr 19, 10:19 pm, Michael Press <[email hidden]> wrote:

> Kevlar bead has no advantage over steel bead once it
> is mounted on the bicycle. They ride the same.
They are lighter, which some view as an advantage.

How much lighter?

Vittoria Open Corsa EVO CX in size 700 x 23 is said to weigh 230 g.

Vittoria Rubino Pro with kevlar bead is also 230 g.

Vittoria Rubino with wire bead is 310 g.

Bontrager Race Lite Hardcase with wire bead is 330 g. That's what I
have on my Bontrager Race Lite wheels, so most of my weight savings
seems to have come from changing the tires.

If I really saved 200 g with the different tires, the Easton wheels may
be heavier on the front, and only 30 - 40 g lighter in the rear.

I measured a wire bead in a Serfas tire.

wire diameter: 0.04 inch = 0.00101 m
loop diameter: 0.645 m
density of steel = 7850 kg/m^3
volume = (pi/4).2.pi.(0.645).e-6 = 3.18e-6 m^3
mass of steel wire loop = 2.5e-2 kg = 25g.

I compute the mass of the steel beads in my tire to be 50 g.
A kevlar bead is not massless, so I expect it would be
less than 50 g lighter.

--
Michael Press

Michael Press said:

In article <[email hidden]>,

Colin Campbell said:

Michael Press said:

In article
<[email hidden]>,
 DirtRoadie <[email hidden]> wrote:

Quoted message said:

Quoted message said:

> On Apr 19, 10:19 pm, Michael Press <[email hidden]> wrote:

Quoted message said:

Quoted message said:

>> Kevlar bead has no advantage over steel bead once it
>> is mounted on the bicycle. They ride the same.
> They are lighter, which some view as an advantage.

Quoted message said:

Quoted message said:

How much lighter?

Quoted message said:

Vittoria Open Corsa EVO CX in size 700 x 23 is said to weigh 230 g.

Quoted message said:

Vittoria Rubino Pro with kevlar bead is also 230 g.

Quoted message said:

Vittoria Rubino with wire bead is 310 g.

Quoted message said:

Bontrager Race Lite Hardcase with wire bead is 330 g.  That's what I
have on my Bontrager Race Lite wheels, so most of my weight savings
seems to have come from changing the tires.

Quoted message said:

If I really saved 200 g with the different tires, the Easton wheels may
be heavier on the front, and only 30 - 40 g lighter in the rear.

I measured a wire bead in a Serfas tire.

wire diameter: 0.04 inch = 0.00101 m
loop diameter: 0.645 m  
density of steel = 7850 kg/m^3
volume = (pi/4).2.pi.(0.645).e-6 = 3.18e-6 m^3
mass of steel wire loop = 2.5e-2 kg = 25g.

I compute the mass of the steel beads in my tire to be 50 g.
A kevlar bead is not massless, so I expect it would be
less than 50 g lighter.

--
Michael Press- Hide quoted text -

- Show quoted text -

try more O2

go thru the tire lists. kevlar BEAD significantly lighter than wire
BEAD. BEAD being structure holdong the wire or kevlar.

http://www.universalcycles.com/search.php?SearchFor=road+tires&dosearch=Search

I see Conti has a new touring tire, res[ponding to general criticism
and Scwalbe's new factory.