Aluminum Tube

Would it be a bad thing to build an aluminum motorcycle frame?

I will be starting a project bike within the next month. I have a 1973 rigid shovelhead frame. I want to cut a little weight. So, I was thinking about building an exact replica of the frame I already have, but I was going to use aluminum tubing. I plan on using 1" O.D. .5" I.D. tubing. From an engineers point of view, would the aluminum frame hold up to the weight and stress as well as the steel frame? Or at least hold up just fine?

Aluminum tends to "work harden" from flexing. A frame made from aluminum would have to be super rigid to prevent this. That is something that is pretty difficult to do with tubing.

Secondly, have you done the math? I am not sure you will really be saving that much weight.

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1 X 2 X 1 8 X 48 Long RECTANGULAR ALUMINUM TUBE
1 X 2 X 1 8 X 48 Long RECTANGULAR ALUMINUM TUBE
$23.94
1 X 2 X 1 8 X 36 RECTANGULAR ALUMINUM TUBE
1 X 2 X 1 8 X 36 RECTANGULAR ALUMINUM TUBE
$19.95
1 X 2 X 1 8 X 24 RECTANGULAR ALUMINUM TUBE
1 X 2 X 1 8 X 24 RECTANGULAR ALUMINUM TUBE
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1 X 2 X 1 8 X 12 RECTANGULAR ALUMINUM TUBE
1 X 2 X 1 8 X 12 RECTANGULAR ALUMINUM TUBE
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2 1 2 Square Tube 6063 T5 125 wall x 18
2 1 2 Square Tube 6063 T5 125 wall x 18
$8.75
2pcs 1 OD x 2 1 4 Long x 1 4 Wall 6061 T6511 Aluminum Round Tube
2pcs 1 OD x 2 1 4 Long x 1 4 Wall 6061 T6511 Aluminum Round Tube
$11.79
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 965 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 965 N
$14.15
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 72 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 72 N
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80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 46 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 46 N
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80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 4825 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 4825 N
$7.87
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 12 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 12 N
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80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 275 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 275 N
$5.18
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 4 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 4 N
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80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 18 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 18 N
$3.94
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 78 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 78 N
$11.74
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 24 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 24 N
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80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 36 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 36 N
$6.28
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 96 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 96 N
$14.08
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 60 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 60 N
$9.40
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile  9000 x 48 N
80 20 Inc 1 x 1 Aluminum Quick Frame Square Tube Profile 9000 x 48 N
$7.84
Aluminum Tube Assembly 819853 01 NSN 4710014810544 Appears Unused 1 Openings
Aluminum Tube Assembly 819853 01 NSN 4710014810544 Appears Unused 1 Openings
$14.99
8020 Inc 1x1 Aluminum Quick Frame Tube w Flanges Opposite Sides 9015 x 12 N
8020 Inc 1x1 Aluminum Quick Frame Tube w Flanges Opposite Sides 9015 x 12 N
$3.52
80 20 Inc 1x1 Quick Frame Tube Right Angle Double Twin Flange 9030 x 9650 N
80 20 Inc 1x1 Quick Frame Tube Right Angle Double Twin Flange 9030 x 9650 N
$19.94
8020 Inc 1x1 Aluminum Quick Frame Tube w Flanges Opposite Sides 9015 x 72 N
8020 Inc 1x1 Aluminum Quick Frame Tube w Flanges Opposite Sides 9015 x 72 N
$13.12
80 20 Inc 1x1 Quick Frame Tube Opposite Double Twin Flanges 9035 x 36 N
80 20 Inc 1x1 Quick Frame Tube Opposite Double Twin Flanges 9035 x 36 N
$8.44
80 20 Inc 1x1 Quick Frame Tube Right Angle Double Twin Flange 9030 x 48 N
80 20 Inc 1x1 Quick Frame Tube Right Angle Double Twin Flange 9030 x 48 N
$10.72
8020 Inc 1x1 Aluminum Quick Frame Tube w Flanges Opposite Sides 9015 x 18 N
8020 Inc 1x1 Aluminum Quick Frame Tube w Flanges Opposite Sides 9015 x 18 N
$4.48
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 36 N
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 36 N
$7.00
8020 Inc 1x1 Quick Frame Tube Right Angle Double Twin Flange 9030 x 4825 N
8020 Inc 1x1 Quick Frame Tube Right Angle Double Twin Flange 9030 x 4825 N
$10.77
80 20 Inc 1x1 Aluminum Quick Frame Tube Double Flange 9025 x 12 N
80 20 Inc 1x1 Aluminum Quick Frame Tube Double Flange 9025 x 12 N
$3.64
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 12 N
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 12 N
$3.40
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 18 N
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 18 N
$4.30
8020 Inc 1x1 Aluminum Quick Frame Tube w Flanges Opposite Sides 9015 x 36 N
8020 Inc 1x1 Aluminum Quick Frame Tube w Flanges Opposite Sides 9015 x 36 N
$7.36
80 20 Inc 1x1 Quick Frame Tube Opposite Double Twin Flanges 9035 x 12 N
80 20 Inc 1x1 Quick Frame Tube Opposite Double Twin Flanges 9035 x 12 N
$3.88
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Dbl 5 Flanges 9010 x 9650 N
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Dbl 5 Flanges 9010 x 9650 N
$17.04
80 20 Inc 1x1 Aluminum Quick Frame Tube Double Flange 9025 x 60 N
80 20 Inc 1x1 Aluminum Quick Frame Tube Double Flange 9025 x 60 N
$11.80
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 60 N
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 60 N
$10.60
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 24 N
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 24 N
$5.20
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 72 N
8020 Inc 1 x 1 Aluminum Quick Frame Sq Tube w Single 5 Flange 9005 x 72 N
$12.40

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