Gear Hub fan
Join Date: Nov 2008
Location: Reno, NV
Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
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Originally Posted by meb
Any idea why the less expensive steel version would weigh less than the aluminum version?
Is there something extra in the aluminum version that makes it weight more?
A steel hub shell can be made with thinner walls due to greater material strength. Also the aluminum hub shell undoubtedly has various steel inserts including a steel ring gear inside the shell. After all the difference in weight is only 10 grams, about 1/3 ounce or less than 1% of the total weight. Basically they are very close to identical weight.
Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
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