Coker advantages:
- Less effort for same speed; more speed for about equal effort.
- Flywheel effect makes for a nice, steady ride.
- Looks cool, turns heads, higher view from up there.
Coker disadvantages:
- Heavy. The more hillier the ride, the less Coker advantage.
- Only one choice of tire.
- Less maneuverable in tight spots.
- More work to mount and dismount.
- Big; takes up more space when stored or carried around
29er advantages:
- Literally hundreds of tires to choose from (though most are skinny).
- Light as a feather compared to Coker wheel.
- More exercise for equal distance ridden.
- Fits much more easily into car, closet, cubicle, etc.
- More choice of frames.
- Stronger wheel.
29er disadvantages:
- More pedaling to go same distance
- Less flywheel effect, so a little more effort to cruise, even at
comparable rpm.
- You don't stand out as much as on a Coker (this is optinally an
advantage).
My commute to work is about 8.2 miles, with minimal hills. My Coker with
125s (and a nice Wyganowski handlebar) does it great, and I get there in
about 40 minutes.
The other day I tried my new 29er with 102 cranks. I could feel it was
more wear & tear on my knee, which started to bother me about halfway
there. I slowed down after that. When I arrived at work and stopped the
stopwatch, it was only a few minutes slower than my average Coker ride.
Amazing! So it was more pedaling, but the overall time was very close.
The 102s felt pretty comfortable. I don't know if I would be happy with
shorter ones, though I would try 89s if I had 'em.
I prefer the Coker for my commute, but I won't be racing on it in Japan,
so I will try to ride the 29er to work as many times as possible before
NAUCC (after I recover from Mt. Diablo on Saturday, 29er with 140
cranks).
The more hilly your ride will be, the more you might prefer the 29er.
Also if there are lots of stops or obstacles like pedestrians. On the
other hand, the further your ride is, the more you might lean toward the
Coker. I know not all of Ottawa is flat, as I've ridden around the
downtown (Unicon V and International Cycling Festival). Outlying areas
might be dead flat though.
The Coker is likely to be a bigger change from what you're used to
riding. If it comes with 150s, start out by riding with those until you
get comfortable. Then you can switch to shorter ones and you'll
appreciate them much more. Give the cycle time for you to get used to
it; don't pass judgement after only a few rides.
JJuggle mentioned idling. Cokers are not for idling. When I get to a red
light I get off. People in cars love watching you get on your unicycle
anyway. Getting off is a rest for your crotch. Though you can idle a
large wheel, it doesn't really do much for you, other than take up a lot
of space (usually not a good idea at a red light). Hold the post or
dismount. Idling on a Coker or larger wheel is like using a road bike
for Trials.
--
johnfoss - Walkin' on the edge
John Foss, the Uni-Cyclone
"jfoss" at "unicycling.com"
www.unicycling.com
"That sucks." -- Ryan Atkins, at the bottom of a 10' cliff he just
jumped off at the 2003 California MUni Weekend, looking at his bent
seat.
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