G
gerblefranklin
Guest
I recently did a poorly landed 5+' drop, and bent my right snafu pedal
(or possibly my profile crank, however unlikely). I have also bent the
spindles on a set of wellgos and I'm not sure, but also another snafu. I
am tired of breaking stuff, as there's no reason to do so. So my
question is a rather simple one:
How feasable is it to fabricate one's own pedals? What features would
one want in them, and what materials would you use? Sealed cartridge
bearings, or custom seals?
I'm thinking of a 4130 chromoly spindle, or titanium, depending on which
is cheaper to heat treat. As for the material of the body, I am thinking
aluminum and rubber. Possibly magnesium if it's easy enough to obtain,
but aluminum seems the best bet both for strength and durability and
accessibility.
As for the bearings, I'm thinking custom o-ring seals on the outside
would be more than easy, and on the in-side a rubber flap that srings on
the axle to keep mud and grit out. A good packing of grease on the other
side could provide a backup protection. I think cartridge bearings, such
as on Wellgo b-37s, are inferior because of their lateral weakness.
As for the pedal body designs, I was considering a custom,
non-symmetrical design. On the left (pedalgrab side) pedal, one side
would be amply pinned, while the other side would have a small
triangular reccess in it with rubber lining so as to facilitate
stability on round rails. The edges would be pinned for grip in wood. I
don't grind, and have no need for good sliding. On the right side, a
normal, symmetrical parralleogram design seems ideal. Plenty of pins of
course.
Please, if you have any input on the topic, I'd like to hear it.
--
gerblefranklin - Trials Unicyclist
http://gallery.unicyclist.com/Trials-Muni
Nick's main man.
"Democracy is just a word when the people are starving"-Immortal
Technique
------------------------------------------------------------------------
gerblefranklin's Profile: http://www.unicyclist.com/profile/4295
View this thread: http://www.unicyclist.com/thread/38082
(or possibly my profile crank, however unlikely). I have also bent the
spindles on a set of wellgos and I'm not sure, but also another snafu. I
am tired of breaking stuff, as there's no reason to do so. So my
question is a rather simple one:
How feasable is it to fabricate one's own pedals? What features would
one want in them, and what materials would you use? Sealed cartridge
bearings, or custom seals?
I'm thinking of a 4130 chromoly spindle, or titanium, depending on which
is cheaper to heat treat. As for the material of the body, I am thinking
aluminum and rubber. Possibly magnesium if it's easy enough to obtain,
but aluminum seems the best bet both for strength and durability and
accessibility.
As for the bearings, I'm thinking custom o-ring seals on the outside
would be more than easy, and on the in-side a rubber flap that srings on
the axle to keep mud and grit out. A good packing of grease on the other
side could provide a backup protection. I think cartridge bearings, such
as on Wellgo b-37s, are inferior because of their lateral weakness.
As for the pedal body designs, I was considering a custom,
non-symmetrical design. On the left (pedalgrab side) pedal, one side
would be amply pinned, while the other side would have a small
triangular reccess in it with rubber lining so as to facilitate
stability on round rails. The edges would be pinned for grip in wood. I
don't grind, and have no need for good sliding. On the right side, a
normal, symmetrical parralleogram design seems ideal. Plenty of pins of
course.
Please, if you have any input on the topic, I'd like to hear it.
--
gerblefranklin - Trials Unicyclist
http://gallery.unicyclist.com/Trials-Muni
Nick's main man.
"Democracy is just a word when the people are starving"-Immortal
Technique
------------------------------------------------------------------------
gerblefranklin's Profile: http://www.unicyclist.com/profile/4295
View this thread: http://www.unicyclist.com/thread/38082