
Originally Posted by
Flettner
Bike frames (pedal) were made from 7000 series but it's fatigue resistance was not as good and older 7000 alloy bikes were not worth owning, they all cracked sooner or later. On the other hand 6000 series frames, although a little heavier, have much better fatigue resistance. many early units are still operating.
I wouldn't bother with 7000 series frames, just (expensive) trouble waiting to happen.
Interesting to note that all our Gyro Copter rotors, rotor heads and frames are all still made from 6061 T6. Frames and Rotor heads are bolted together with the rotors being bonded (and bolted at the hub also)
6061 T6 is good all round performer.
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