trials_uni said:A splied hub is so much stronger for a few reasons:
1: A splined axel is ussualy made of a stronger material
2. A splined hub is usually 3/4" thick or more
3. The splines that fit the hub and cranks together create more surface
area contact and allow less wobble.
4. The cranks themselves are alot stronger.
Dude, where did you get your information? Do you just make [censored] up
when you answer people's questions?
Most splined axles (such as Profile, KH and Qu-Ax) are heat-treated
Chromoly Steel... this is the same material used in the UDC
square-taper hubs. (see unicycle.com's product pages for details)
Many high-end square taper cranks are made from solid aluminum (such as
Odyssey's Black Widow) while splined cranks such as those from Profile
are hollow steel tubes. Comparing the materials in these two
cranksets, the steel has a higher breaking strength than the aluminum,
but the aluminum has a higher yield strength. This means the steel
cranks will bend before the aluminum ones will... but the aluminum
cranks will snap before the steel does. You pick your definition of
"strength" and apply that here as you will... whether one or the other
is "alot" stronger is debatable...
Much of the strength of a crank comes from its design, not just the
material it is made from. We've seen failures of both splined and
cotterless cranks... there is no clear winner as to the stronger crank.
In my personal experience, I've broken two square taper hubs. My
cheapo aluminum cranks took the forces I applied to them, but the hub
snapped like a twig. The greater strength of a splined crankset comes
from a thicker axle, not necessarily the cranks themselves...
--
maestro8
Those are my principles. If you don't like those, I have others. --
Groucho Marx
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