Design
The Backpack Bicycle For Ultra-Portable, Potentially Dangerous Transportation
Posted by Sean Fallon at 4:40 AM on July 9, 2008
The idea of a compact, folding bicycle is nothing new, but designer Chang Ting Jen is hoping to take the concept even further with his Backpack bike. According to the specs, a production version would weigh around 5.5kg and fold into a backpack that measured just under 60cm in length. Naturally, that means that you could pick up and carry your bike around just about anywhere.
A bicycle as compact as this version promises to be would definitely be appealing--especially when gas prices are as high as they are right now. However, the plans call for plastics to be used in the frame instead of metal to keep the weight down. With all of the technology going into bike frames these days, you would think that a more advanced material could be used in the frame to add strength and drop weight. By the looks of things, this bike could be deadly to someone weighing over 70kg. [The Design Blog via Tech Digest]

Comments (AU Comments · US Comments)
There are currently no AU comments for this post.
venomous_duck41
Posted 5:39 AM 9/7/08
@Lupison: how do you jump up onto a curve? Unless it has a berm in it but you dont see many of those away from motocross tracks. Now ive seen people jump up onto a curb which this looks a little unsuited for.
venomous_duck41
venomous_duck41
Posted 5:37 AM 9/7/08
@bjacobel: but then you'd be riding a razor scooter...
venomous_duck41
Lupison
Posted 5:24 AM 9/7/08
You hit one bump in that thing... hell that thing couldn't even jump up onto a curve.
Lupison
ps61318
Posted 5:18 AM 9/7/08
@92BuickLeSabre: Oh, for sure my first impression: "Why does that guy have a toilet seat on his back?"
And are they using "plastics" to mean, well, plastics, or as a generic proxy for "not metal?" Because that would allow for graphite epoxy - which would be what I would use. A design like that would be a snap (no pun intended) in graphite.
ps61318
hu_hu_cool
Posted 5:15 AM 9/7/08
You cant use flamingo to render now, it just looks bad.
hu_hu_cool
frigg
Posted 5:11 AM 9/7/08
The more pressing danger for the person wearing it would be if someone else mistook it for a toilet seat.
frigg
Gann
Posted 5:10 AM 9/7/08
@GeekyNerdGuy: The expected lifespan of the product drops from a week to about 15 mins.
@92BuickLeSabre: The designer might cry.
Gann
groverdog
Posted 5:10 AM 9/7/08
make one with a bell and tassles and I'm in!
groverdog
ANoel
Posted 5:09 AM 9/7/08
Folding bikes are great for throwing (carefully) in a car trunk or portaging in a paved urban setting. Here in Toronto bikes are forbidden on buses, streetcars and subways during morning and evening rush hour. If for any reason a cyclist with a non-folding bike like this needs a public transit lift ... SOL! Here is where the folding bike comes to the rescue. Some bike racks are being tested on buses and in storage compartments under commuter trains, but this is a painful process of integration, and one that has to happen if healthier commuter lifestyles are to be realized. This kind of bike I hope is just a stop-gap in that transition.
ANoel
bjacobel
Posted 5:07 AM 9/7/08
Plus, if it wasn't on your back all the time, I bet this would be harder to lock/secure than a regular bike. What would you do, put a chain through the straps? I'd much rather put my 3lb bar lock through the frame of my Trek and leave it where I rode it to with some peace of mind.
bjacobel
arekkusu82
Posted 5:05 AM 9/7/08
Should be named Bike-Pack.
arekkusu82
92BuickLeSabre
Posted 5:03 AM 9/7/08
What if they combined this design with not-a-toilet-seat design?
92BuickLeSabre
GeekyNerdGuy
Posted 4:59 AM 9/7/08
What if they combined this design with the cardboard bicycle design?
GeekyNerdGuy
bjacobel
Posted 4:57 AM 9/7/08
Or.... you could just buy a Razor scooter and put it in a real backpack. Then you could disguise it as a katana, and challenge Ben Stiller to a walk-off.
bjacobel
bosskev
Posted 5:59 AM 9/7/08
@bjacobel: I used a Xootr scooter for years for casual short-range commuting and loved it. The only real problem with it was that when I'd arrive at my destination and fold up the scooter, it would be gunked with road dirt and inevitably get schmutz on my clothes as I carried it. Although it's hard to be certain from these pictures, if this does indeed feature an integrated waterproof bag that would completely enclose the wheels and such, then it could be practical for use with business clothes.
@arekkusu82: Yes!
When I reach my goal, a measly 150 pound duty rating would be fine. Well, close enough anyway. (-25)@92BuickLeSabre: Or, flip the backpack upside down, hold it over your head and look like you've got really big bright ideas.
bosskev
Geisrud
Posted 5:44 AM 9/7/08
I'm gonna ride the MS150 on that next year. Then when I'm like 500 yards from the finish, I'll fold it up and hide it under my Camelbak. Everyone will think I ran the whole thing!
Geisrud
VideoVampire
Posted 6:38 AM 9/7/08
Where do I plug in my Ipod on this thing?
VideoVampire
GeekyNerdGuy
Posted 6:35 AM 9/7/08
@bosskev: My bad, I wasn't paying attention. I meant to ask that question to @Geisrud:
GeekyNerdGuy
bosskev
Posted 6:33 AM 9/7/08
@GeekyNerdGuy: Not meaning to mislead, "short-range commuting" on a scooter for me means, like, six blocks to the parking garage and back. Just a bit less than Houston to Austin.
bosskev
bosskev
Posted 6:27 AM 9/7/08
@microe: "I think a better idea would be a toilet backpack...Think about all of the gay sex you can have just about anywhere."
Umm...based on the escapades of so many of my friends, I'd say that was already happening without any such gadgets. (Not me, of course, my friends. Yup. Just my friends.)
* sadly, is telling the truth *
* sighs *
bosskev
GeekyNerdGuy
Posted 6:26 AM 9/7/08
@ps61318: @bosskev: Which one did you guys do? I did Houston to Austin this year via the Park Route (extra mileage through one ridiculously hilly state park).
GeekyNerdGuy
ps61318
Posted 6:16 AM 9/7/08
@Geisrud: I did that ride a couple of times. Ours was actually had a 175 mile option - a full century on day 1 and 75 on day 2 (different routes out and back, obviously).
They try and make the ride as accessible as possible, so the road is usually pretty good, but there are exceptions. Gets a little choppy in spots. I would be worried about major bruising in that area twixt my pubic bone and my butt - which has a name, which I forget.
In fact, for anything longer than a quick jaunt, same issue. Gonna hurt.
ps61318
microe
Posted 6:14 AM 9/7/08
I think a better idea would be a toilet backpack. Looking at the design sketches, the designer is about 63% there. Imagine, being able to shat anywhere! And then carrying your own feces with you into the different public places you go. Think about all of the gay sex you can have just about anywhere. Think of all the senators from Idaho you will meet.
Seriously, finding a decent bathroom in an urban environment is a non-trivial experience.
microe
ps61318
Posted 6:52 AM 9/7/08
@GeekyNerdGuy: @Geisrud: Cleveland to Sandusky (Cedar Point Amusement Park). But it's been probably fifteen years.
I'm finally getting on the bike more - had a couple of good rides this year. Got older and blobbier - need to work on that.
I love to ride, though.
ps61318
RE-L
Posted 7:23 AM 9/7/08
This could work, with some improvements. I've seen more people using the razor scooters than I thought I ever would (in NYC). For those people this would probably be a good option.
RE-L
yougottabekidding
Posted 7:39 AM 9/7/08
Just learn how to ride a unicycle. It should be just as easy to strap it to your back, at half the weight.
yougottabekidding
ithcy
Posted 10:15 AM 9/7/08
@yougottabekidding: you gotta be kidding.
ithcy
alpacalypse
Posted 2:09 PM 9/7/08
As per usual, this design looks like it was conceived by someone who's never been in the same room as a real, practical, reliable bicycle.
alpacalypse
Purple Dave
Posted 5:39 PM 9/7/08
@ANoel:
Yeah, but this thing looks like it would be so much more effective as a backpack than it ever would be as a mode of transportation. More like it was designed for lifelong mass-transit users who are terrified that they might suddenly find themselves needing to transport themselves by human-power at some point.
Purple Dave
ANoel
Posted 11:39 PM 9/7/08
@Purple Dave:
Ya, true enough.
On second glance it does look like a Paddle-wheeler.
= )
ANoel
toyotaboy
Posted 3:04 AM 10/7/08
concepts are great, too bad they don't include any of the fine details like movement.
Speaking as an engineer, that concept would take a lot to keep it strong and actually function without something stripping.
toyotaboy