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Aerial Wheels - Over Aerostability and Sail Effect

Monday, October 22, 2018 9:51:57 AM America/New_York

Imke Oelerich

The selection of aerodynamic wheels is great. There are many manufacturers offering wheels in different rim heights, designs, quality levels and price categories. It's hard to keep track. What is important in the choice of wheels and how much does an aerobar actually deliver?

When you talk about being as "aerodynamic" on the bike as possible, that means keeping air resistance as low as possible. If we look at the overall system, consisting of athlete and bike, then the complete wheel is responsible for only 25 percent of the total air resistance . The wheels - as part of the complete wheel - account for eight percent of the total drag. Whereas the athlete a whopping 75 percent of power. The legitimate question is, why on earth should one spend so much money on wheels with this knowledge?

Imke Oelerich deals with this topic and mentions her three reasons why she still thinks it's worth investing in high-quality wheelsets.

Aerial wheels and aerostability

Stability means having the bike under control regardless of the wind situation. If you can not control your bike, you'll have to leave the aeroposition, reach for the basebar, and the aerodynamic drag you create as an athlete (75 percent) will "slow you down." If you can hold your position, exactly these 75 percent of air resistance will be positively affected. Did you know that wheels really do make a big contribution to the improved handling of your bike? If the aerofoils of your impeller meet the highest quality standards, then these are ideally designed so that the so-called steering torque remains low even at high angles of attack and the stall is very smooth and even. These very characteristics are crucial

Aerial wheels and sail effect

Another advantage of good Aerofelgen is the so-called sail effect. Whether you believe it or not, wheels can produce noticeable forward thrust (negative air resistance) through a higher angle of attack. The angle of attack is the angle of Windanströmung and direction of the athlete. Higher approach angles of more than ten degrees are quite common in reality. The lower the profile height of the rim, the greater this sailing effect can be. On the rear wheel, you can almost always drive a very low rim height, since the air is already very swirling, until it hits the rear wheel and thus has little negative impact on the stability. In strong and gusty wind conditions, you should make sure to reduce the rim height of the front wheel accordingly. The front wheel is flown directly and is accordingly wind-prone. Say it affects the steering behavior significantly more than the rear wheel.

An aero wheel is more than an aerofoil

The Aerofelge is just the beginning. If you want to take money in order to get an aerobatic bike, then it is a "good thing". Make sure that not only the rim but also the spokes, the nipples and the hub shell are aerodynamically optimized. Aero-optimized spokes - flat forged - have a huge impact on the rotational air resistance. This is the air resistance to which the spokes are exposed as they rotate about the axis of the impeller. With the nipples you should make sure that they are within the rim. The hub shell also has a measurable positive influence on the air resistance by reducing the flange height and the hub diameter.

However, with all the points you should always keep in mind:

Aerostability goes before sail effect!

If you're small and light, you'll want to reach lower rim heights in strong winds to ensure aerostability. If you can hold your aeroposition, you will benefit more and more from it as the sail effect.

Now you should be provided with enough information to equip yourself with the right wheelset, even on a stiff North Sea breeze or cross-winds in Hawaii, to fully exploit your performance.

Posted By art art

Edson Mendes Barboza Jr.

Wednesday, September 5, 2018 3:36:53 PM America/New_York

One of the world's top UFC MMA figters Edson Mendes Barboza Jr. has stoped by Stradalli Headqarters in Pompano Beach Today to pick up his new Stradalli Como carbon road bike. Edson is training to his upcoming fight in Desember and wants to suppliment his running exrecizes with road bicyicle riding. 
Stradalli has a long history of providing bicycles to UFC MMA fighters and has been favorite brand for America Top Team and Blackzilians

Edson Mendes Barboza Jr.

Posted By art art

Swingle Wins Two National Mountain Biking Gold Medals

Thursday, August 16, 2018 4:08:38 PM America/New_York

Swingle wins two national mountain biking gold medals

Jordan Swingle in Sun-Sentinel

Original article: http://www.sun-sentinel.com/local/broward/davie/fl-cn-sp-davie-bike-marathon-20180815-story.html


Considering Jordan Swingle has only been riding mountain bikes for a little more than a year and a half, he’s made quite a name for himself on the national trails.

The 26-year-old Davie resident recently rode to two titles at the USA Cycling Mountain Bike National Championships in the Alleghany Mountains of West Virginia at Snowshoe Mountain Resort. In winning the two events, Swingle was awarded two Stars-and-Stripes jerseys in addition to his gold medals.

“I raced motocross for a good portion of my life and I stopped that in 2013, and about a year and a half ago I wanted to get back in the dirt a little bit,” said Swingle, who finished 12th in the event last year at nationals. “I just wasn’t ready for it, I went for the overall experience.

“This was my biggest win so far,” said Swingle, who did motocross from age 13 to 21. “This is the one that I really wanted. In motocross, we really didn’t have the money to race because there is a lot more money involved. With motocross, the goal was always to just qualify for nationals and I never had that chance.”

The first national title Swingle won came in the XC (Cross Country) 25-29 age division for Men’s Senior Category 1-2 where he rode to a 1:56:05.3 clocking, just edging out Bradford Perley (Brevard, North Carolina), who finished second in 1:56.24.4. Swingle rode five laps of 4 1/2 miles each.

Swingle also captured the STXC (Short Track cross country) championship in the 19-29 age division in the Men’s Senior Category 1 with a time of 28:40.06 over the 7-1/2 miles layout. He defeated Brian Gordon (Santa Cruz, California), who placed second in 29:11.98.

“In a sense, it [short track] is 'give it all you got for a short amount of time,'” Swingle said. “My main focus was on the cross country, the longer distance. I signed up for the short track event at the last minute. I didn’t even know it was there.”

Swingle, a 2010 graduate from American Heritage-Plantation where he ran cross country and track, said his motocross background helped.

“Motocross is also physically demanding as well,” he said. “The sports are very similar in a way. They are both physically demanding and motocross has a good balance between skill and endurance. You have to have a lot more skill in motocross.

“There is still a fair amount of skill in mountain biking, which helped me out, but there is a lot more endurance involved in the mountain biking,” he said. “Motocross really gave me a big jump start in how to handle a bike and how to maneuver and stuff.”

Starting the year off, Swingle said he hoped for a Top 5 finish at the national event.

“I was doing races here and there and the more races I did and seeing how well I was doing, I thought I had a good chance of winning,” Swingle said. “Going into it, I was pretty confident with a Top 3.

“A lot of the times I get worked up and nervous for the race, but my whole family was there and my girlfriend was there and that helped me get my mind off it…having them all there supporting me really helped a lot,” he said.

Swingle has competed in between 20 and 30 races this year. He said winning at nationals was redemption for getting a flat tire at the USA Cycling Marathon Mountain Bike National Championships in Arkadelphia, Arkansas where he was leading at the halfway mark of the 50-mile course and eventually placed seventh, 18 minutes off the pace.

“I had a good gap and then I got a flat tire,” he said. “Things just didn’t go right at that race. This was my redemption for that one.”

Swingle said he is hoping to turn professional but still has a few Category 1 races ahead. It is the highest level a rider can be before the professional ranks.

“I am still relatively new so I am not ready to turn pro yet,” Swingle said. “I still have some races I want to do. I would like to give the Sea Otter Classic on April 11 to 14, 2019 in Monterey, California a try and then the marathon national event another shot next May.”

“There is really not much difference between motocross and mountain biking when you are competing,” Swingle said. “It is not as loud because I don’t have the motor. Your heart is beating and you are pumped up and you are racing against the other guys so you still feel the same in a lot of ways.”

Posted By art art

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