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Originally Posted by wonner
What a minute; weren't you in that movie "Rad"?
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Hey!! I was in RAD!! I was the one that did the jump!!
Aluminum is in no way stiffer than the other materials. The old 2000 series alloy is the stiffest but it breaks or cracks easily. The 7000 series aluminum is stronger and flexes but not as far as the 6000 series alloy. You'll see al the US made frames have 6061 T6 material and all the Taiwan and China made frames are the 7000 series. 6061 T6 has the most "Memory", which means you can flex it farther and it comes back into original position more times than the other two mentioned so 6061 is the most sought after but the most expensive.
Steal frames are by far the most practical and by steal I mean like a 4130 Chromally steal. It will last the longest and flex the least but by far it is heavier than the alluminums.
Chuck Robinson from Robinson Racing gave me my 24" BMX Cruiser before he died back in '91 or so. I can still race that bike cuase it is 4130. Had it been aluminum it would have been done years ago.
When I show up at the track my bike is older that 95% of the kids racing.......they give me shit for it. I just laugh.
BMX, Downhill and olympic Velodrome where the best kind of racing. Road was way too boring.