Scorpion Venom and Attack rims are selected rims developed in Germany and designed using extensive applied and theoretical aerodynamics know-how acquired during many years of work in wind tunnels, and at the cutting edge of computational fluid dynamics (CFD)
Every rim undergoes tire inflation test, dimensional accuracy testing, and batch testing using X-ray imaging to identify any potential lamination issues before the rims are released for sale. Venn standards are among the highest in the industry
Patented filament winding process ensures precise and accurate carbon fiber layup – each fiber is oriented exactly as intended. This ensures that every rim achieves maximal strength and durability
The rim shapes are formed using metal mandrels, not bladders or foam. Metal mandrels deliver much higher tolerance and molding accuracy, and prevent fiber migration during curing
Complex post cures process to completely finish the epoxy resin reactions. Resins used in manufacture of sporting goods (rims, frames, rackets, etc.) often do not in fact fully cure until several days after the initial curing (baking) cycle is completed. Two additional post-cure cycles for additional 14 hours is also performed. This results in the rims being fully cured and therefore entirely stable once you start using them
The filament winding process utilizes slit tape towpreg to accurately lay up the carbon fiber in an automated, computer controlled process.
The profile of the SLD45 rim was developed to offer the best aerodynamics when used with 25-28mm tires. The external width of 30mm optimizes the airflow in combination with wider tires, while the internal width of 21mm ensures that the wider tires achieve a stable, round profile. The rim width also means that the rims are laterally very stiff while the filament winding process ensures that the rims remain vertically compliant due to the 45 degree fiber layup bias. The combination of these features results in very fast, safe handling wheels that can be used in any conditions.
The wheels are compatible with clincher, or tubeless tires that when used with a sealant virtually eliminates the inconvenience of having a flat tire away from home, or during a race.
Tire Pressure Doesn’t Matter for Performance. The variations are much smaller and hard to predict – they depend on the tire as much as on the road surface – so the take-home message is that tire pressure doesn’t matter enough to worry about it. Inflate your tires enough that they don’t collapse when you corner at speed, and you have found the optimum pressure for your tires. It’s that simple.
A detailed explanation of why this happens is beyond the scope of this article, but basically, on a bike, the resistance of tires consists of two types of energy losses. One is from deformation of the tire, and higher pressures reduce that deformation. The second loss occurs from the vibrations of the bike, and those increase with higher pressures. The two effects roughly cancel each other, which is why tire pressure doesn’t have a big effect on rolling resistance. In the past, researchers focused only on the tire deformation and overlooked the losses due to vibrations, hence the belief that higher pressures rolled faster.
Read All About it HERE
It took a while for this research to become accepted, but once the professional cycling teams started testing tires with power meters on the road, they found that the wider tires, run at lower pressures, were as fast, or faster, than the narrower tires they had been running. Add to that the better cornering grip – more rubber on the road, less bouncing that can break traction – and it didn’t take long for the pros to go from 23 to 25 mm tires.
ConclusionTire pressure does not significantly affect your bike’s rolling resistance, but the casing construction of your tires does. This means that you can ride lower pressures without going slower, and that wide tires are no slower than narrow ones – as long as they have similar casings. The fastest tires have supple casings that consume less energy when they flex, and transmit fewer vibrations, creating a win-win situation. These tires roll super-fast no matter at what pressure you run them.
Wheels are the easiest and the best upgrade you do to a bike, to enhance performance and feel.
Bottom line - if you put carbon wheels on your bike you’ll be able to ride faster, for longer.
Whether you’re tired of lagging behind in group rides, or looking for competitive advantage when racing, if you want to do better in the saddle, you only have couple of options - training hard, upgrade components or upgrading your bike. Upgrading your bike is certainly the most expensive, upgrading components could help to a certain extent.
When it comes to upgrades, the most effective change you can make is wheels. Scorpion Bike Wheels can definitely help you attain significant marginal gains. When you’re talking about wheels, nothing performs better than deep carbon. There is no other upgrade possible on a bike that will have more impact on speed and endurance than carbon wheels. Click here for Cycling Tips
Carbon wheels are lighter and more aerodynamic than their metal counterparts. They’re also more rigid - Click here for wheel test -the stiffer the wheel, the less it it flexes under hard pedaling, and the less energy you loose as a result. This means people using carbon wheels are able to do better with less effort. It’s easy to see their appeal. Though they aren’t cheap, in terms of performance gain, carbon wheels have better value dollar-for dollar than any other component. Want to ride faster?
Upgrade to Scorpion Bike Wheels and sting the competition
Bottom line - if you put carbon wheels on your bike you’ll be able to ride faster, for longer.
Whether you’re tired of lagging behind in group rides, or looking for competitive advantage when racing, if you want to do better in the saddle, you only have couple of options - training hard, or upgrading your bike. Upgrading your bike is certainly the easier of the two, and is usually undertaken first.
When it comes to upgrades, the most effective change you can make is new wheels. When you’re talking about wheels, nothing performs better than carbon. There is no other upgrade possible on a bike that will have more impact on speed and endurance than carbon wheels.
Carbon usually wheels are lighter and more aerodynamic than their metal counterparts. They’re also more rigid - the stiffer the wheel, the less it flexes under hard pedaling, the less energy you lose as a result. This means people using carbon wheels are able to do better with less effort. It’s easy to see their appeal. The advantage of deep aero rim is greater then the weight savings on a superlight alloy set.
True that super light alloy wheels, will offer an advantage on long steep climbs, fast down hills and cross winds. But, if you don't have plans to go to the Alps any time soon, the deep carbon rim on rolling terrain will maintain speed with less drag, and that saves you energy for the final attack.
Though they aren’t cheap, in terms of performance gain, carbon wheels have better value dollar-for dollar than any other component
Want to ride faster? Now you know how ;)
Guerciotti is world known for one of the most prestigious Italian brands in Cyclo-cross.
Guerciotti’s compelling story started in 1964 when Italo, a noted and expert cyclocross rider, decided with his brother Paolo to open a small show of 20 square meters (for selling and maintenance of bicycles, in Via Petrella 4, Milan).
Check out Selle Italia Pro team #crossteam
1975 was a historical year for the Guerciotti company. In fact, besides increasing the manufacturing of racing bikes thanks to the Paolo’s Guerciotti dynamism, Guerciotti had commercial escalation with export of products all over the world, mainly in the USA, sponsoring the American Ten Speed Drive. It is really in this era that the Guerciotti gained worldwide appreciation, receiving attention from the important cycling news magazine ‘Bicycling’.
Thanks to the cooperation with professional teams, Guerciotti is fully advanced in terms of technology and design. For this reason, Guerciotti bicycles are requested in all markets and all of the major cycling shows (Milano, Colonia, InterBike, EuroBike).
Take for example the Eureka SHM50:
The Eureka SHM50 is composed of carbon material with 75% 30tons High Modulus IMS60 carbon pre-peg + 20% 46tons Ultra High Modulus HS40 Carbon Pre-Peg+ 5% 60Tons Super High Modulus XN-60 Carbon Pre-Peg.
The material system applied includes an high performance composite materials technology and special graphite fiber and epoxy resin. – the same system is commonly used in aeronautics, aerospace and automobile industry. Eureka SHM50 is realized with an innovative process Advanced VaBm+EPU high level molding process, thanks to a unique technology ensuring lightweight and extremely high values of STW (Stiffness To Weight).
You can learn more about it at:
I recently had a question on a forum about bike handling.
Here I post the conversation to see if others can benefit or had to the fix.
- Good morning, afternoon, evening. I have a serious question. Just road my bike first time fully loaded. It felt squirrelly at first, I got over it and when i picked up speed the bike seemed to be having like a gyroscope effect. I felt like i was riding on a flat tire most of the time for a 2 hourIs ride. this normal? Is there any possible ways to fix it?
- Hi Nick, interesting question. assuming you check tire pressure, and depending on the load weight you should increase the pressure to compensate, but be careful not to exceed the max recommended on the tire. 1- you may need to get bigger tires. 2- your bike geometry it's not suitable for the task at hand 3- Your wheels are not adequate for the weight. 4- wheel spokes are loose 5- weight distribution problem
Now lets review some of these in detail. starting with (2) you need a longer wheel base bike and or a more relaxing front angle about 71.5 or 72. degree.There are specific cargo bikes on the market check them out. longer wheel base or bigger front rake will feel wobbly at low speed but it gets better as speed increases. (3) your wheels may have low spoke count, you should look for 32 or 36 spoke and wider rim (4) it may not be the problem but have it checked (5) to much weight in the rear, and you lose steering control making the bike feel like riding a surf board. To much weight on the front and you steering will feel, heavy and responds to quick to any movement.
Try this. Walk with your bike (no cargo) hold it by the saddle only. when you walk slow if the bike handle bar moves to quick and its hard to get it to roll in a straight line, but gets in control as you walk faster you are good on geometry. If the bike is stable at slow walking but gets wobble as you walk faster you may have a short wheel base and steep front angle (great for CX and criterium racing)
Nick Richert 10:11pm Feb 13
well, that seemed helpful.