Wednesday, August 29, 2007
Dream Bike
This is a video of a mom cycling with two kids and 4 bags of groceries. A similar cycle, featured in this month's MAKE magazine, was used on a camping trip to carry a 55-gallon drum, camping gear, and four potted plants, all while towing a trailer with a kid inside. The pilot of the bike, a tiny woman named Martina, who (from pictures) can't be more than 5'4". Martina is not an olympic athlete, nor a steroid user. She is able to move such loads because she has two very useful and clever accessories on her bike.
The first is a hitchless trailer. It essentially lengthens the wheelbase of the bike, and adds a great deal of cargo capacity. The hitchless trailer kit is made by Xtracycle, and is what allows all of the cargo to not only fit on the bike, but also enables the bike to bear the weight.
The second accessory is a Stokemonkey electric motor. There are tons of motor kits for cycles, and though most run out of power after ten blocks leaving you with a 100 lbs bike with a partially jammed drivetrain, there are a few that do a good job. In that regard Stokemonkey is nothing new. What Stokemonkey does a little differently is that it works with the rider instead of in addition to the rider. Stokemonkey connects directly to the crankset of your bike, and by pedaling you engage the clutch. There is a throttle on the handlebars to let you choose how much help Stokemonkey provides, but the clever clutch design means that the Stokemonkey is always working in tandem with your legs, and because it applies torque to the crankset rather than the wheels, the Stokemonkey make just as smart gearing decisions as you do!
I want a bike with this set up incredibly badly. I'd love to be able run weekend errands on my bike rather than in Leorah's car. Depending on how you use the motor a single 9Ah charge will get you in excess of 25 miles, which is far cheaper than gas (even at Leorah's 35+ mpg), and suddenly your bike becomes far more versatile. Right now I'm not even able to grab groceries on my way home from work without having to think far enough ahead to bring an extra bag or empty my panniers. Even with empty panniers I only have room for ~2 bags of groceries.
Unfortunately the Xtracycle kit and Stokemonkey run around $1700 total, so I don't think I'll be getting one soon. However as long as I'm in or near a city I think I'd choose this over buying a car, or even a motorbike or scooter. It's better suited to my needs, lighter on the wallet, and better for the city.
Subscribe to:
Post Comments (Atom)
7 comments:
Surly Karate Monkey frame - $465
Headset - $35
29" WTB Exiwolf Wheels/Tires -$500
Handlebar and Stem - $50
Mechanical Disc Brakes - $100-$200
BB/Crankset/Chainrings - $80
Cassette - $50
Deraileurs/Shifters - $140
So to build a from scratch you're talking ~$1450 before you drop the $1700 on the trailer/motor. That comes out to a little more (<$1000) than a scooter (say TGB or Honda) which have a top speed only ~10mph higher, are more dangerous and carry less cargo. And, at ~80mpg the scooters are arguably still worse in terms of fuel economy (though their range can be better).
Plus there's nothing to stop me from simply dropping $200-$300 on a used bike, or even using one I already own. Though I would still want to splurge for disc brakes. I don't know how hard it is to stop a big, cargo-laden bike going 25 mph, but I'd bet it's much safer with discs.
Nix that: Xtracycle sells a pre-kitted marin w/ discs for $929. That means a sub-$3000, scooter-comparable price tag...
While that bike is pretty mac-daddy, check out the bike accessory that we just purchased for Rowan.
Pretty cool, eh? And when we need, we can use the sidecar for groceries.
Nate, that is pretty cool. I wonder if it's big enough for the dog? How does it effect your ride? Can you still lean into turns?
Unfortunately it looks like you need a bit of space between your front wheel and your downtube to mount that thing, so as a cargo solution for the bikes I'd be using it probably wouldn't work...
You can lean into turns no problem; the side car stays level because the pivot is in the same plane as the frame.
You do need a little space between the bottom bracket and the front tire (26 cm). Luckily my bike has 28cm, so it works good. I'll bet the dog would love it. Too bad your bike doesn't have the 26cm.
that IS purdy cool there boy-o...just don't total one if you get it...
*grudge*
can't you just get Guy to run alongside w/ you?
Josh, I have one html tag for you: < /grudge>
Post a Comment