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Video
Tube Fabrication Process
How is the Hydro-form tube made?


   Cycle Frame Depot


  Aluminum 7005 Tube Set
All tubes are formed from large round 7000 series seamless tube, so called the "mother tubes", and cold drawn to different shapes or sizes. By doing cold-work process adds extra strength and performance. Shapes tube are initial at T4 condition. Post welding artificial aging at 6 hours low temperature of 200F follow with another 4 hours of 320 F. This heat treat process will bring the frame up to desired strength. Other technical information available upon request.
Tube Specification
Top Tube Shape ØOD T1 L1 L2 T2 C L3 T3 Length
30/40x1.3/0.8/1.3* 34.9 1.3 50 80 0.8 300 40 1.3 600mm
Aero 1.374 0.051 1.969 3.15 0.031 11.81 1.575 0.051  

Down Tube Shape ØOD T1 L1 L2 T2 C L3 T3 Length
30/68x1.5/0.9/1.2* 50.8 1.5 90 35 0.9 260 75 1.2 700mm
Aero 2.000 0.059 3.543 1.378 0.035 10.236 2.953 0.047  
40/50x1.5/0.9/1.2* 44.0 1.5 85 100 0.9 290 50 1.2 600mm
Aero 1.732 0.059 3.346 3.937 0.035 11.417 1.969 0.047  

Seat Tube Shape ØOD T1 L1 L2 T2 C L3 T3 Length
31.8x2.3/1.6* 31.8 2.3 95 60 1.6 n/a n/a 600mm
Round 1.252 0.091 3.74 1.969 0.063 n/a n/a  
868* 42.0 1.2 355 50 1.4 n/a n/a 700mm
Aero, Wheel Cut Off 1.654 0.047 13.976 1.969 0.055 n/a n/a  
877* 44.0 1.2 355 50 0.9 n/a n/a 700mm
Aero, Wheel Cut Off 1.732 0.047 13.976 1.969 0.035 n/a n/a  

Chain Stay Shape ØOD T1 L1 L2 T2 C L3 T3 Length
19/31x1.4/0.9* 25.4 1.4 85 90 1.0 n/a n/a 410mm
Oval, Taper 1.000 0.051 3.346 3.353 0.043 n/a n/a  
19/31x1.4/0.9* 25.4 1.4 85 90 1.0 n/a n/a 410mm
Oval, S-Bend, Taper 1.000 0.051 3.346 3.353 0.043 n/a n/a  
25.4x1.5/0.9* 25.4 1.5 85 90 1.0 n/a n/a 410mm
Round, Taper 1.000 0.055 3.346 3.353 0.043 n/a n/a  

Seat Stay Shape ØOD T1 L1 L2 T2 C L3 T3 Length
19x1.0* 19.0 1.0 n/a n/a n/a n/a n/a 600mm
Round, Taper 0.0748 0.051 n/a n/a n/a n/a n/a  
23/14x1.0* 19 1.0 n/a n/a n/a n/a n/a 600mm
Oval, Taper 0.748 0.047 n/a n/a n/a n/a n/a  
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