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  #1  
Old 04-10-2018, 10:19 PM
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Why my Schwinn was Faster...

Why my Schwinn was Faster...

I got into bicycle racing back in the 70s.

At the time my ride was a Schwinn Super Le Tour 12.2.

The 12.2 optimistically stood for the weight in kilograms but it was actually 13 kilos or 28.5 lbs.

It had Schwinn Components, 27 inch clincher wheels, and 1 1/4 " tires.

After training with a club for one summer (Queen City Wheelmen), it was set aside for a custom bike ordered from the Yellow Jersey in Madison, WI.

San Rensho criterium frame, Campy Record groupo, Araya aerodynamic rims, narrow sew-up (tubular) tires, Swiss DT spokes, Cinelli handlebars.

The club had a weekly time trial along the Ohio and Miami rivers, just west of Cincinnati.

As I recall, the route went past Harrison's Tomb.

Good pavement and only rare traffic.

Plus the finish line was a short hop back to the starting line where we parked our cars if we didn't ride to get there.

The Schwinn had several TTs under its belt with respectable times (at least for a Cat IV).

But the San Rensho/Campy was going to shame the previous times.

I least that was the expectation.

The San Rensho never performed as well, not even close.

I couldn't figure it out.

Training was going well, but the times just weren't there.

The suspicion at the time was that the stiffness of the new bike was causing enough discomfort to slow things down.

Replaced the steel forks with aluminum and still couldn't make it work.

So tonight, decades later, I'm looking at Cycling Weekly and there's an article about Campy's new tubeless wheels, ceramic bearings and all.

And, midway though the article:

Quote:
Knowing that wider tyres are aerodynamically faster, Campagnolo has designed the wheels with 25 and 28mm tyres. It has also recognised that rolling resistance is affected by the standard of tyres used, with tubular tyres being the slowest and tubeless the fastest with clinchers in-between.

Read more at http://www.cyclingweekly.com/news/pr...mThJdpd5hhc.99

I miss that Schwinn.
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Old 04-11-2018, 02:16 PM
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Re: Why my Schwinn was Faster...

"Knowing that wider tyres are aerodynamically faster, "

That must be why I cycle on the road with my Opus all mountain bike fitted with 2.5inch Maxxis tubeless tyres. Who woudda thunk?
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Old 06-05-2018, 05:57 PM
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Red face Re: Why my Schwinn was Faster...

The black and chrome Schwinn died at speed on a long downhill in the hills west of Cincy.



The Super Le Tour is on the right but the color scheme on mine was as on the left.

It had been modified for more of a racing bike look by removing the OEM spoke guard next to the freewheel.

A fatal mistake (for the bike).

On the way back home, from a solo, endorphin releasing, training ride there was a long downhill with no traffic or headwind.

Man and machine were one and power was coming out of the thin air.

A warm fall day with cloudless sky and a rhythm keeping life at bay.

Then the chain slipped between the free wheel and the rear wheel spokes.

A sudden lurch and the derailleur was ripped from the rear dropout.

A long walk to the nearest home and a requested call from the owner for help.

Bike and owner rescued but never to ride together again.

"Long May You Run...."

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Old 06-06-2018, 03:14 AM
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Re: Why my Schwinn was Faster...

I just tossed away my Super La Tour...compared to my Super Six, it was a Bentley in weight. 28 vs 14 pounds

I lent mine to a friend 10 years ago and got it back a few weeks ago....it was stored outside the whole time
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Old 06-07-2018, 05:28 PM
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Re: Why my Schwinn was Faster...

Bicycle tires - puncturing the myths

"Wheel Energy is taking the mystery out of tire testing and development"


More info on rolling resistance and other facets....


https://www.bikeradar.com/us/gear/article/bicycle-tires-puncturing-the-myths-29245/


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Old 06-16-2018, 08:05 AM
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Re: Why my Schwinn was Faster...

As a former bicycle racer (road, track & MTB) and until recently coach of 15 or so years I have a theory on bike weights and in particular the wheels. Wheels are a rotating mass. A lighter wheel will accelerate more easily and be better for climbing. However, when it comes to time trial, especially a relatively flat course, a heavier wheel would work like a flywheel and hold a better “average” speed. A typical wheel set will welgh around 2kg (4.4lbs). I was able to ride a 40km tt training ride in 1hr on my average wheels (flattish course). The bike shop I frequented got these new carbon rim, Kevlar spoke wheels in and loaned them to me. They were 1.1kg (2.4lbs), still light even today. Otherwise the same bike. Never matched the same time. So it really depends on the discipline you’re riding as to what wheels work the best. Of course rim depth (aero profile) will make a difference too, like a full disc wheel, but not as significant, IMO, as the mass.
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Old 06-16-2018, 06:33 PM
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Re: Why my Schwinn was Faster...

It's not my wheels holding me back, it's my fat A$$

I'm looking for another Cannondale hybrid...I have one in Florida, but decided I want one for trail riding up here in the Catskills....so, I'm on the hunt.
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Old 06-21-2018, 01:45 PM
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Question Re: Why my Schwinn was Faster...

Carb loading and bicycling.

Bicycling at a quick pace can burn an incredible amount of calories.

But many bicyclists have a paunch or worse.

This may in part be due to excessive carb intake before a ride.

Without carb loading, body fat is burned on a fast ride.

Some have suggested that the way to lose the "paunch" is to avoid carbs before and even during the ride.

Burn the excess body fat first.
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Old 06-23-2018, 10:55 AM
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Re: Why my Schwinn was Faster...

So which carbs?

Sucrose is half glucose and half fructose.

Glucose can be directly metabolized by the body for energy while fructose must first be metabolized to glycogen and lipid.

Most sugar added to products these days is fructose in the form of corn syrup.

While glycogen is mainly stored in the liver, lipid is stored in fat cells.

Quote:
Lipids such as cholesterol, cholesteryl esters, and triglycerides are stored in your body primarily in specialized fat cells called adipocytes, which comprise a specialized fatty tissue called adipose tissue. Stored lipids can be derived from the lipids in your diet or from lipids that your body synthesizes.

healthyeating.sfgate.com/lipids-stored-body-5236.html

Quote:
Glycogen is the principal storage form of glucose in animal cells. In humans, the most glycogen is found in the liver (10% of the liver mass), whereas muscles only contain a relatively low amount of glycogen (1% of the muscle mass). In addition, small amounts of glycogen are found in certain glial cells in the brain.

orthomolecular.org/nutrients/glycogen.html
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