Tube - Head Tube - EC44 / ZS44 - 43.9 x 48 x 950 mm
~37.4” ◾ 950mm
Our 950mm long carbon fiber headtube is the part of a bicycle's frame where the headset and fork is mounted. This headtube is 44mm ID and is EC44 and ZS44 compatible, so it works for straight or tapered steerer forks with the appropriate headset. Larger diameter headtubes add stiffness to the front end, improving feel and responsiveness. This 44mm headtube is available in various lengths, or you can purchase it at 37.40" and cut it to any length. If you need a headtube trimmed to a specific length we recommend that you order with cutting to guarantee the flatness of the cut.
Quick Facts About This 44mm Headtube
- EC44 and ZS44 Compatible
- Unidirectional Matte Finish
- 43.9mm ID x 48mm OD x 950mm Long
- Glass layer on the inside to minimize corrosion when used with aluminum bearing components
Additional Information
| Application | Bicycle |
|---|---|
| Frame Segment | Head Tube |
| Shape | Round |
| Materials | Standard Modulus Carbon |
| Pattern | Unidirectional |
| Color | Black |
| Finish | Sanded Smooth |
| Inside Diameter | 1.728 |
| Outside Diameter | 1.89 |
| Wall Thickness | 0.081 |
| Length | 37.402 |
| Length (max continuous) | 37.402 |
| Linear Density | 0.303 |
| Volumetric Density | 0.055 |
| Weight | 0.944 |
| Primary Fiber | Tenax UTS50 |
| Primary Resin / Hardener | Eporite EHM32 |
| Temperature Rating (F) | 250.0 |
| Max Operating Temp- (Tg) | 250F to 274F |
| HTS - Harmonized Tariff Code | 6815.13.0000 |
Engineering Properties
All laminate properties and mechanical calculations are based on Classical Lamination Theory and should be used as a reference only. Rock West Composites does not guarantee these properties or calculations.
| Avg EX Young's Modulus | 1.391E7 |
|---|---|
| Avg EY Young's Modulus | 5293000.0 |
| GXY Shear Modulus | 2390000.0 |
| X Tensile Yield Strength | 86940.0 |
| X Compressive Yield Strength | 103100.0 |
| Y Tensile Yield Strength | 31830.0 |
| Y Compressive Yield Strength | 40580.0 |
| XY Shear Strength | 40580.0 |
| CTEX | -1.11E-07 |
| CTEY | 2.39E-06 |
| Poisson's Ratio vXY | 0.268 |
| Poisson's Ratio vYX | 0.102 |
- "X" is along the length of a tube, rod, plate, or panel.
- "Y" is around the perimeter of a tube, perpendicular to the length of pultruded parts, or along the width of a plate or panel.
Calculators
All laminate properties and mechanical calculations are based on Classical Lamination Theory and should be used as a reference only. Rock West Composites does not guarantee these properties or calculations.
Layup Orientation
45292 Rev NC
| Ply # | Orientation (degrees) | Location |
|---|---|---|
| 1 | (0/90 120 E-Glass Scrim) | Inside |
| 2 | (0/90 120 E-Glass Scrim) | ↓ |
| 3 | 0 | |
| 4 | 0 | |
| 5 | 0 | |
| 6 | 45 | |
| 7 | -45 | |
| 8 | 90 | |
| 9 | 90 | |
| 10 | -45 | |
| 11 | 45 | |
| 12 | 0 | |
| 13 | 0 | |
| 14 | 0 | |
| 15 | 0 | Outside |
- 0° fibers maximize bending stiffness and run along the length of the part. Consider bending a tube over your knee.
- 45° fibers maximize torsional stiffness and are typically plied together in an opposing manner, i.e. ±45°. Consider twisting a tube like a vehicle's driveshaft.
- 90° (or "hoop") fibers maximize crushing stiffness and generally assist in overall durability. Consider laying a tube on the ground and stepping on it.
Technical Specifications
We cannot supply any test data for this tube at this time, data may become available in the future