The right pedal has a right hand thread. That means it's clockwise to
tighten, like the lid of a jar, or a normal nut and bolt.
The left pedal has a left hand thread. That's anticlockwise (US =
counterclockwise?) to tighten.
If the pedals are on the wrong sides, then they will unwind in normal
use.
The crank arms may be stamped L and R. If not, then the pedals may be
stamped L and R - usually on the end of the threaded bit that gies into
the crank arm (so look from the back of the crank arm).
If they are on the wrong sides, the proper cure is to remove the cranks
and refit them correctly. The easy cure is to turn the seat round!
For a properly set up unicycle, the gap in the seat clam is at the back.
As a unicycle frame is symmetrical, this is more to do with looks than
function.
If your pedals are properly fitted (nip them tight with a 15 mm spanner)
but not overtightened, and they are on the correct sides, they should
not loosen in normal use.
If they are loosening in normal use, it is possible that the threads are
damaged.
If you do lots of idling, reversing, or drops, you may loosen the
pedals. It's a wise precaution to check them from time to time.
Replacing your pedals is a simple and highly effective upgrade for your
unicycle. A good pair of grippy pedals will give you more control, and
therefore more power. When I first fitted pinned platforms to my MUni,
it was a revelation!
--
Mikefule - Roland Hope School of Unicycling
Competing with yesterday to hold off tomorrow.
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