coldove.gif (2093 bytes)col.gif (3064 bytes) has been designing and producing fork blades and steering columns for forks since 1930, the year in which the parent company, AL Columbo, started production of tubes for cycle frames. This background gave rise to the production of the first fork blades of elliptical section and the first multibutted fork blades, using Columbus' exclusive 'Reciprocating Rolling Process'.

Today, with the demand for ever greater lightness, Columbus have replied with the CARVE,  MUSCLE and SUPER MUSCLE, three Columbus forks which in carbon fibre, capitalize on Columbus' years of experience of fork design.

Carbon fibre as a material is 4 times more resistant than steel and 8 times more resistant than aluminium. Its versatility and directionality allows Columbus designers to modulate the section and form of the fork blades to satisfy all design criteria, without compromise or limitation. The Columbus composite fork blades have been realized by overlapping 15 layers of T-700 aerospace carbon fibre and then covering this externally with a layer of High Modulus Carbon fibre, which is 20% lighter and 10% more resistant than T-700. Additionally the full carbon fork, MUSCLE, also includes a special reticular fabric in titanium called 'Ti Mesh titanium net'. This has a considerable damping effect on high frequency vibrations within the fork, such as those produced by irregular ground surfaces. Super Muscle includes Kevlar and Nickel for improved weight saving while maintaining strength and shock resistance.

 

 



 

 

Columbus Minimal Fork 1" or 1 1/8" non integrated

This new monocoque fork from Columbus is called Minimal, with its essential and sober line, it has been developed for traditional head sets,
particularly for steel frames, as their essential lines don’t so well complement integrated forks.  The progressive curve of the fork blades dampens
vibrations and guarantees great handling stability including in extreme conditions.

Characteristics:

  • Carbon monocoque fork

  • Composition: unidirectional T700 Carbon Fibrer

  • Carbon steering column Ø 25.4 L=300 mm or 28.6 L=300mm non integrated

  • Forged dropouts in AL 6061 T6

  • Rake: 45mm

  • MEETS THE NEW EUROPEAN SAFETY STANDARD: EN 14781

 

Retail Price from us:

£178.95   
 

Price includes Columbus Expander Bung and Worldwide Carriage.

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Picture here is of Carbon Steerer Model.
Fork Decal Design is different on Alloy Steerer Model. See Main Fork Catalogue Page above for Picture.

Columbus TUSK Light Fork

 

Characteristics:

 
  • Crown in forged 6061 aluminium alloy, C.N.C. machined
  • Composition: Multi Layered Carbon Fibre
  • Steering Column 28.6x300mm in Carbon
  • Profiled Carbon fork blades
  • Forged fork ends in 6061 alloy
  • Rake 45mm
  • Weight 495 g average with Carbon Steerer, 550 with Aluminium

Retail Price from us:

£96.95 
 

Price includes Worldwide Carriage.

Please Specify Preferred Steerer Material. Also whether you require the Columbus Expander Bung (Extra £11.95)

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Also available with Aluminium Steering Column at the same price £96.95 (Delivered Worldwide). Please specify.

 

 

   


 

Columbus TUSK Straight Fork

 

Characteristics:

 
  • Carbon fibre T700/High Modulus monocoque fork
  • Steering Column 28.6x300mm in Carbon
  • Aluminium Reinforcement at Fork Head Crown
  • Profiled Carbon fork blades
  • Forged fork ends in 6061 alloy
  • Rake 45mm
  • Weight 400 g average

Retail Price from us:

 £149.95.  

Price includes Expander Bung and Worldwide Carriage.

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Columbus TUSK Mega Fork

 

Characteristics:

 
  • Profiled Carbon fork blades
  • Reinforced variable thickness Steering Column 28.6x300mm AL 7075 T6 in Carbon
  • Forged 6061 T6 aluminium alloy head. Oversize 50mm.
  • Forged fork ends in 6061 alloy
  • Rake 45mm
  • Weight 590g average

Retail Price from us:

 £119.50

Price includes Expander Bung Worldwide Carriage.

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Columbus TUSK AIR Fork

 

 

 

A model with an aerodynamic profile, designed for triathlon and time trial bicycles, could
not be missed off the Columbus fork line. Thanks to the NACA profile section, developed
to obtain the best performance at top speed, the special profile of the Carbon blades
reduce to the minimum the drag of the fork. The fork blades also present a special curve
in the rear section to increase handling comfort. The fork head, the drop outs, especially
designed to match the stretched profile of the fork, and the 1” 1/8 steerer, are in
Aluminium alloy.

MEETS THE NEW EUROPEAN SAFETY STANDARD : EN 14781.

Characteristics:

  • Carbon fibre blades with variable section

  • Forged aluminium 6061

  • AL 7075 T6 steering Column 28.6x320mm

 

Retail Price from us:

 £113.50

Price includes Worldwide Carriage.

 

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Columbus TUSK Cross

The Columbus Tusk Cross fork has been especially design for Cyclocross Bicycles.
The 45mm diameter fork head is forged in aluminium 6061 T6, with a 1 1/8" steering column in 7075 T6 aluminium reinforced with variable thickness. The oversize fork blades are made in multilayered unidirectional carbon fibre and are integrated with a CNC aluminium reinforcement on the brake pivot. The oversize blade section makes the Tusk cross a strong and reliable fork suitable for competition (and in accordance with the new European EN 14781 and EN 14784 standards)

Characteristics:

 
  • Carbon fibre fork blades with variable section
  • Forged 6061 T6 alloy head
  • Fork blades aluminium internal reinforcement for V brake pivot
  • Reinfoced steerer with aluminium thickness. Aluminium 7075 T6, 28.6mm, L=300mm
  • Forged fork ends in 6061 alloy
  • Rake 45mm
  • Weight 740 g average

Retail Price from us:

£143.95  
 

Price includes Worldwide Carriage.

 

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Columbus TUSK Trekking Fork

 

The Columbus Tusk Trekking fork is the ideal solution for demanding trekkers, requiring a performance product.

Characteristics: 

  • Carbon fibre blades with variable section
  • Forged 6061 T6 alloy head with mudguard clearance.
  • Fork blade aluminium internal reinforcement for V brake pivot
  • Reinforced Steering column in variable thickness AL 7075 T6. Diameter 28.6mm, L=300mm
  • Forged fork ends in 6061 alloy with M5 threaded hole for bag carrier
  • Rake 45mm
  • Weight 740 g average

Retail Price from us:

£145.50
 

Price includes Worldwide Carriage.

 

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Columbus Expander Bung:

The clearance recovery system of the steerer has been made especially to be able to adapt to the internal diameter of the fork column. The length was designed to be able to involve the entire closure area of the handlebar stem. Thanks to a series of expanders, the hold is greater and better distributed along the internal surface of the column.

Characteristics:

• in CNC-processed aluminum alloy

£12.95

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TESTS

Columbus carbon forks are produced in accordance with ISO 9000. All forks are marked and their history can be traced. The tests include destruction testing and are performed on finished product samples. They are very severe:

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  • Frontal and side strength test:
    A load of 200 N is first applied to the frontal part and then to the side part of the fork. The flex is measured on each occasion and this must not exceed a set value.
  • Shock Test:
    A mass of 250 N is dropped from a height of 430mm on a properly restrained fork. In order to pass the test the fork must resist without breakage or residual deformation.
  • Static Test:
    A load of 200 N is applied to the frontal part for 1 minute. In order to pass the test the fork must resist without breakage or deformation.
  • Fatigue Test:
    During this test an alternate force of +-600 N is applied. In order to pass this test the fork must resist for 150,000 cycles without breaking.