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Scorpion carbon Technologies

SCORPION CARBON RIMS ARE MANUFACTURED USING A UNIDIRECTIONAL AUTO FILAMENT WINDING  PROCESS BY A ROBOT, 
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Hand crafted in USA 
Tested in lab and in the real word by bike fanatics
"Stinging the competition one wheel at a time​"
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Scorpion Bike Wheels Venom and Attack carbon fiber clincher may very well be the perfect wheel: it’s fast, light, and strong, with the added benefit of convenient-to-change tires. They are some of the hottest products in cycling today. There has been a flood of new carbon clinchers into the market, with vastly differing levels of quality. Our carbon rims utilize advanced technologies AFW (Auto Filament Wound) and our own patented heat resistant resin in the production that allows them to safely withstand the extreme heat (240c) and force created under different cycling condition, even the hard and long braking without any heat failure.
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Auto Filament Wound Technology (AFW) has changed the way carbon rims are produced. Different than producing the rims by hand, Filament Winding is done by Robot, which is Pre-Coding with program, so human error is removed from the equation.  That produces the stiffest and most durable laminated rim in the world. It is our laminate design along with our new patented TGH 240c resin, that gives an edge on the competition In trade this process cuts manufacturing labor time and thus cost.

We are confident that you will be satisfied with the performance and value of our products, or your money back. ​We back our products with 5 year warranty, and offer a discounted parts only charge on crash replacement.


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  • Patented filament winding process to ensure that each carbon fiber layer can be distributed evenly and bonded tightly, enabling its strength to reach a maximum value. Also machine managed process can avoid the random layup errors and result higher accuracy & precision.
 
  • The rim bed is wound layer by layer in carbon fiber over a mandrel in a computer controlled process, this enables precise fiber orientation, continuous fiber paths, and higher fiber to resin ratios, resulting a more durable carbon rim.
  • Patented self-developed 240 degree high temperature resin, tested by DMA / DSC in house.

  • Carbon fiber pre-preg weaving in house, impregnating with own HTG resin system.
  • X-Ray machine to inspect the inside layup structure to guarantee the strength from every aspect.
  • First time 220 degree molding; Second time 230 degree baking 8 hours; Third time 230 degree baking 6 hours.
  • Full inspection of tire pressure test at 140psi for every rim.
  • Rim profile designed by American composite expert who use CFD work to optimize the aerodynamics.
 
  • UCI / ISO test standard; Wind tunnel test in Arizona USA.

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Scorpion Carbon Rims

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ATTACK  Series

Road Racing/Crit/climbing
Auto Filament Winding
3 cross filament pattern
Super light and stronger
Tubeless ready
Rim Brake:
26mm Wide x 38mm, 50mm Deep (28mm wide special order)

38mm-425g / 50mm-460g
Disc Brake :
28mm wide x 45mm deep
Aero Bladed Carbon Spokes

Weight  1350g

We introduced this rim in 2015, and It has been feature at GCN show.
The stiffest wheel they ever tested


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Venom Series
This is our first Auto Filament Wound rim introduced in 2013
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Road Racing/Crit/TT
Auto Filament Winding
UD Tangent wound
Tubeless/Clincher 
Rim Brake:  26mm Wide x 36/ 50/ 60/80mm Deep
36mm-440g / 50mm-470g / 60mm-480g
​Disc Brake:   28mm wide  x 35/45/67mm deep
All Road Disc:  30mm wide x  40mm deep 460g.                                      

​Rim Brake or Disc


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Velocita Series

Endurance/TT
Prepeg T800 18k
​Tubeless ready
Lazer cut brake track, Nanotech
Wider profile
Available 50mm, 60mm
Rim Brake


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Venom- CROSS​KING  
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Auto Filament wound 
​Cyclocross/Gravel
Disc Brake
​Tubeless rim only
Asymmetry EQTM for stronger wheel
30mm Wide 35mm Deep
​Tubeless disc only



Scorpion ​Venom Series Carbon Rims Test Data
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PictureVenom CR50 Carbon Rim
Venom - Carbon Rim Technology:
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Carbon from Toray T800 
Mitsubishi Rayon in  Japan, the world’s largest producer of carbon fiber
– Used by the aeronautical and defense industries. 
- Braking surface up to 240c deg.
- Composite, CNT (Carbon Nano Technology) 
- 50-200 gpa (100 times of steel)
- EPS (Expanded Polystyrene System) keeps the inside​  smooth by melting away in the casting process.


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  • ​UD finish
  • 240c deg. heat resistant patented resin
  • Auto Carbon fiber pre-preg weaving
  • Double core mold
  • ​Wind tunnel tested in USA
  • ​UCI tested and approved ​

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​Venom Rim Specs
​​CR36-440g /CR50-470g/CR60-550g/CR80-650g
ERD mm: 568/545/520/480
Rider weight limit: NO limit
Max tire pressure: 125PSI
Max spoke tension: 140KGF
Flatness: ≤0.2mm
Roundness: ≤0.3mm
UCI / ISO test standard

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Wind Tunnel Test CR50 vs Zipp 303 Firecrest
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Carbon wheel rim brake test

Rim test failure at 20 mph with same brake pressure applied until rim explodes 
(this is the reason why Big wheel companies are pressuring Big bike companies to go with disc brakes)
In the test bellow shows the time in seconds and temperature F of the rim before plodding
Notice that some rims got hotter as the time before failure went down.

We can assume that, more friction = better braking = more heat = quicker failure
Carbon is a non conductive material so, heat builds up. This is a problem because heat will not transfer throughout the entire rim surface but, it will remain on the applied area of friction, brake track. As the resin gets soft with the heat, the pressure from the tire forces the rim outward. Once the tire bid passes the edge of the rim, the tube explodes destroying everything on it's way.
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Roval Wheels were the worst in this test, ouch. (pic #4)
How did we fair with our Scorpion Venom series rim?
​Scorpion Venom rim -  1200s / 264f, cooled down to (0c) in just 34s  -  *0c=room temperature

Boyd 60mm
Failure Test
Boyd 60mm 187s / 332 F
ENVE SES 4.5
rim failure test
ENVE SES 4.5 326s/ 266 F
Mavic Cosmic
Failure test
Mavic Cosmic 251s / 265.6 F
Roval 184s / 303 F
Zipp 404 Firecrest
rim test failure
Zipp 404 Firecrest 312s / 285 F

Compare ENVE vs Scorpion Venom Series

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​Look closely at the filament layup.

Scorpion Venom Series rim, it's made using the same  auto carbon filament winding technology as these famous brands​
ENVE -  CADEX - VENN
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(AFW) - Auto  Filament Winding

The carbon filament comes in a spool and goes through the resin tank as it gets wrapped around a mold to form the rim, and its cut into shape by a mandrel.  This creates a uniform rim without seams or deformation. The patented high temp resin is applied in the process.
​A computer controlled robot controls the entire operation, assuring precision and uniformity.
​NO HUMAN ERROR IN THE PROCESS
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Patented 240c Resin

Scorpion rims - under the "hood"

Section Cut- looking inside  
-Smooth interior wall
-Alloy belt, to reinforce nipple contact
With our filament winding system and EPS mandrel used by other big names like, ENVE the interior of the rim stays smooth. EPS was developed in Germany and its like a foam material that melts away after process.
​​Other rims use bladder system( a balloon)  that will wrinkle and cause a uneven surface on the inside, and that in turn causes uneven weight distribution.​
To Reinforce spoke nipple contact and spoke tension we added a alloy belt​
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Baking process: 
One time high temp molding one time cool down and two times high temp baking
PictureVenom CR50 section cut

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PictureVenom CR50 rim test
Venom Rim TGI brake test
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​​​We have the test machine in the factory to test the rims/wheels, the machine works by spinning a wheel using a chain and simulated rider load and then applying braking force while measuring temperature at multiple points hundreds of times a second using laser technology. The machine can also precisely measure wheel and tire width and see how these dimensions change as braking is applied and heat is generated.


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​Toray Carbon Fiber
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Many small factories, they only purchase the finished carbon fiber, so they don't have much control of resin application. We have the carbon weaving machine in house to make the carbon material to our specs. Further more, our factory  purchase the carbon filament directly from ​from Torayca Japan and Mitsubishi Ryon T700-T800-T1000 used in aeronautical and defense industries, helping us develop the best rim quality possible and cutting costs by producing it in house. 


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​Auto Filament Wind 

Our engineers developed an automatic wrapping machine to shape the rim bed, so each carbon fiber layer can be evenly distributed and tightly bonded, enabling its strength to reach a maximum value and uniformity.​ ​Other wheel manufactures purchase the carbon in sheets, pre-peg, and they cut it and lay it over a mold.If you look up close the rim you can see the seams.


Scorpion Alloy Rims

We have two types of alloy rims
1)   Our special developed tubeless ready rim CX26 is an all round performer used for most ride conditions.
​Whether you go on road cross or gravel this rim at 470g  is strong with extra material at the nipple edge so it can withstand higher spoke tensions and light enough to make a every day wheel of choice.
CX26 wheelset with 20/24 spokes weights in at 1500g. About the same as any big brand $900 wheel set. 

2)   For the more selected rider/racer we have SLR series rim made with, Super light Niobium alloy .
Niobium alloy is a proprietary material which has been developed by our rim supplier. Niobium alloy uses an advanced T10 heat-treatment process and delivers outstanding weight, stiffness and durability meaning rims can be wider for 25 and 28mm tires, deeper for better aero performance and yet remain super-light for excellent climbing and acceleration.
​SLR series tubeless rims 24x26mm 440g / 24x31mm 480g.

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Scorpion CX Niobium Alloy series
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Clincher/Tubeless ready
deep center channel for easier tire mount
6061-T6 Niobium alloy
Machined braking
​Welded Rim 
24mm widex 26mm deep
​460-470g.



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​SLR26 & CXD26
The all rounder rim that will perform under any ride styles. Available in rim or disc brake
​With tubeless ready and a wide section it will excel on the Tarmac or gravel roads and the aero profile keeps you rolling on the flats.
​Expect complete wheel-set at 1580g with our RS390 hubs and Sapim Race spokes
Custom decal color options available


PictureScorpion SLR31
​Scorpion SLR31 
​​Aero Tubeless/Clincher
Niobium Alloy
24mm wide 31mm deep
​480g. (as much as a 50 carbon rim)
Excellent rim for a classic build with aero profile
Great for you TT bike or road racing.
The deep section 31mm and 24mm wide makes its perfect for today's wider tire applications and you get a great aero look and performance.
Expect a complete wheel-set with our SL210 hubs to be at respectful 1500g.

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Scorpion Bike Wheels LLC , New Bedford, Ma 02740  TEL: 774-202-9041
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  • Home
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