ceepo viper

The CP VIPER provides the stiffest most aggressive ride of our line, and still it delivers an unexpected level of comfort. Its aerodynamic performance equals or betters the frames considered the best in the market. This bike will turn heads wherever you ride it. In addition, like all CEEPO frames, the VIPER has impeccable finish and total attention to detail. If you are a biking powerhouse and the bike leg is your strength, the VIPER is the right choice. The ultimate package of stiffness, aerodynamics, aesthetics, and comfort.

Riding style Long distance, aggressive, frequent acceleration, higher power, lower cadence

Material 100% 40T high modulus carbon

Fork Full carbon fork (including steering tube)

Frame weight 1,800g(Standard) / 1,750g(Di2 ver.)

Fork weight 560g

UCI rules compliant No

Aerodynamics
Ultra-deep section seat tube to improve aerodynamic airflow around the rear wheel, with tight tolerance wheel cut-out to smooth airflow over the rear wheel. Industry leading high aspect ratio 26mm thin seat tube and down tube. Fully frame integrated aero seat post. Rear brake caliper installed behind bottom bracket. Front brake caliper installed behind the fork.
>> The effect of tubing shapes on frame aerodynamics

Production Process
Specially oriented hand-laid carbon fiber layup to achieve the specific riding characteristics of the Viper. Optimizing balance of lateral stiffness and vertical compliance.

Miscellaneous
Full internal cable routing for aerodynamics and smooth operation. Balanced frame geometry designed for stable and responsive straight-line handling. 1-1/8” Integrated headset.

SIZE M / L

COLOR Black / White

WHEELS SHOWN
CEEPO Ironman 85mm + Disc

FRAME SET
frame, seat post (integrated into frame), headset, and both brake calipers. Seat height can be adjusted by cutting the seat post.

CEEPO International offers a LIFETIME LIMITED WARRANTY:
Each CEEPO bicycle frame purchased after January 1, 2009 is warranted by CEEPO INTERNATIONAL against defects in workmanship and materials for as long as the frame is owned by the original owner, excluding paint and decals which are warranted for one year. This warranty covers all CEEPO bicycle frame models and is expressly limited to either the repair or replacement of the defective frame. No other remedies are available under the warranty. The decision to repair and replace the frame is at the sole discretion of CEEPO – and no other remedies are available under the warranty. CEEPO does not warrant against damage caused by normal wear and tear, improper assembly, improper maintenance, or installation of parts or accessories not originally intended for use with or compatible with the frame or bicycle purchased. CEEPO does not warrant against damage or failure of CEEPO bicycle frames caused by accident, misuse, abuse or neglect. Any modification of the frame or its components shall void this warranty. All claims under this warranty must be made through authorized CEEPO Dealers. Claims will be processed only after claimant provides proof of purchase to CEEPO. The warranty applies only for CEEPO products purchased at authorized CEEPO Dealers. CEEPO products purchased through any channel other than an authorized CEEPO dealer are not covered by the CEEPO warranty. This assures original CEEPO quality. CEEPO bicycles purchased on EBay automatically lose all warranty coverage from CEEPO INTERNATIONAL. Subject to the laws of your jurisdiction which prevail where applicable over the terms of this warranty, CEEPO INTERNATIONAL shall not be responsible for incidental or consequential damages suffered. This warranty does not cover labor charges for parts changeovers. Cost of shipment or transportation to or from an authorized CEEPO dealer or CEEPO INTERNATIONAL are specifically excluded and not covered by this Warranty.

http://ceepo.com/2011/products/cp-viper


Aerodynamics

When CEEPO decided to design a bike specifically to compete in non-drafting triathlons, one of the obvious objectives was to attain the best possible AERODYNAMICS. We work with top aerodynamicists, and we spent many hours in the wind-tunnel optimizing the drag coefficient characteristics of our products. We have tested our production models against some of the bike frames that are considered benchmarks in this area, and the results have demonstrated superior benchmark breaking aerodynamics.

For design and testing, CEEPO has benefitted from the invaluable contribution, knowledge, and experience of Professor, Nobumasa Sekishita, PhD, from the Department of Mechanical Engineering at Toyohashi University of Technology, Japan. Wind-tunnel tests have been performed at the Kawasaki Heavy Industries facility, also in Japan.

Since most of our frames have been designed exclusively for non-drafting triathlon bike racing (not for time trials or draft legal races), CEEPO ignored UCI regulations to produce the best triathlon bikes possible. CEEPO’s non-drafting frames offer the down tubes and seat tubes with the highest airfoil aspect ratios in the industry (higher than what the UCI allows).

Aerodynamics
Home » Technology » Aerodynamics

Aerodynamics

When CEEPO decided to design a bike specifically to compete in non-drafting triathlons, one of the obvious objectives was to attain the best possible AERODYNAMICS. We work with top aerodynamicists, and we spent many hours in the wind-tunnel optimizing the drag coefficient characteristics of our products. We have tested our production models against some of the bike frames that are considered benchmarks in this area, and the results have demonstrated superior benchmark breaking aerodynamics.

For design and testing, CEEPO has benefitted from the invaluable contribution, knowledge, and experience of Professor, Nobumasa Sekishita, PhD, from the Department of Mechanical Engineering at Toyohashi University of Technology, Japan. Wind-tunnel tests have been performed at the Kawasaki Heavy Industries facility, also in Japan.

Since most of our frames have been designed exclusively for non-drafting triathlon bike racing (not for time trials or draft legal races), CEEPO ignored UCI regulations to produce the best triathlon bikes possible. CEEPO’s non-drafting frames offer the down tubes and seat tubes with the highest airfoil aspect ratios in the industry (higher than what the UCI allows). The airfoil aspect ratio, as it pertains to bicycle frame tubes is explained in the figure below:

Airfoil Aspect Ratio
The Effect of Tubing Shapes on Frame Aerodynamics

Both the size and shape of bicycle frame tubing has a significant impact on the frame’s aerodynamic drag, with streamlined and airfoil-shaped tubing generally having less air resistance than nearly any other shape, also, a thin airfoil section will nearly always generate less drag than a thick airfoil section, provided the length of the airfoil is constant. The coefficients of drag(cd) for several test shapes are provided below. (all test shapes have the same frotal area)

Tubing Shapes

These test examples show that the shape plays a very important role in aerodynamics. The triangle shape, while having the same frontal area as the plate shape, has 10% less drag than the plate due to the improved aerodynamic shape of it is downwind side.

When you compare bike frames, you cannot take each one of them to a wind tunnel for individual testing. But you can study the way the frame is designed.

Aerodynamics
Frame Tube Comparison

Downtube dimensions

(Aspect Ratio = Length / Width)
Frame Length Width Aspect Ratio
CEEPO VENOM 80 26 3.08
CERVELO P3C 81 29 2.79
CERVELO P2C 81 29 2.79
CANNONDALE SLICE 79 31 2.55
LOOK 496 78 31 2.52
SPECIALIZED TRANSITION 74 30 2.47
CEEPO STINGER 70 30 2.33
QR LUCERO 67 29 2.31
KESTREL AIRFOIL PRO 75 37 2.03
PINARELLO CRONO 61 31 1.97
BMC TT02 64 33 1.94
CALDORA PHX 70 36 1.94
KUOTA KALIBUR 72 38 1.89
ORBEA ORDU 75 40 1.88
SCOTT PLASMA 74 45 1.64
PINARELLO MONTELLO 71 44 1.61
KUOTA K-FACTOR 56 38 1.47


http://ceepo.com/2011/technology/aerodynamics