Actually, we have GPRS in most major cities here in Afghanistan through at least 3 providers, so a tethered cell phone would get them 15kbps download speed for about $40 a month.
From what I can see it seems like they are only stepping down a small bit to increase the rotation of the top shaft making the pedaling somewhat more productive.
But if they added a few more steps they could probably get that top shaft wizzing fast enough to power two or more laptops.
@Bullet77: I am not an engineer, but I am wondering why 2 foot pedals and not one pedal like on my grandmothers old sewing machine, which would seem easier, less shakey and can be powered (if needed) by one foot.
@Curves: The "treadle" is good for power, like driving the needle of a sewing machine, but it can also be very tiring. This set up requires minimal power vs. a treadle.
@Curves: A treadle could be easily implemented, even with the pedal design. I would imagine that the design was based largely on available salvage. A treadle design would also be more difficult with a chain, as it would require a ratcheting sprocket design on the "up take" to avoid hitching (for those slow on the uptake), and possibly introduce more mechanical drag. A belt would work but introduce slippage and "wow" over time, as well as requiring a large flywheel to maintain the high speed necessary in the step-up (as the large iron flywheel on the side of the sewing machine did, or the large wooden wheel of treadle spinning wheels).
@Curves: I'll start from a Singer and see if I could use it as is,
I aim to make it practical and disturb it as least as possible.
I'll post the results
^__^
The origin of the idea is from a while back, when I was considering how to keep my lifestyle in case of some horrific disaster, which would leave us without el. power for indefinite period of time.
Solar power is cool but this came up as the ultimate idea and totally practical, and as you said:
" seem easier, less shakey and can be powered (if needed) by one foot."
so you could take turns and keep it going.
It seams being practical has nothing to do with the engineering degree,
(:though I'm getting mine soon:)
Don't they have hospitals in Europe where they can do this? WHy did he have to fly all the way back to the U.S. from Afghan? They might have been able to save his foot if not for the long flight back.
You know the xkcd that shows the difference between a scientist and a regular person? The regular person pulls a lever, gets electrocuted, and then walks away, but the scientist pulls it again to see if it happens every time? This kinda reminds me of that: the regular person screams in agony, but the photographer takes the once in a lifetime opportunity for some amazing shots.
Ahhh, the "reductions". The ones that were promised within 6 months, then 12 months, then 18 months to reduce "combat" troops, but leave 30-50k over there in non-combat roles.
My party affiliation aside, he keeps a "promise" about as well as Corzine does. I just had a family friend in special forces get recalled to Afghanistan earlier this week.
@apollo89: 36 months now? Hrmmmm, that puts it right around the next election , doesn't it? Way longer than the initial promise of right after he gets in office. But about on par with the "first" Excutive Order he promised of lifting restrictions on Embryonic Stem Cell lines.
I love that this soldier doesn't have the Significant Other album cover....and the 7.62 rounds are a nice touch given that most soldiers don't carry a weapon that fires them...and that this soldier keeps the iPod OUTSIDE their body armor next to their strap cutter. Oh, and besides no-contact convoys, when the hell is a soldier gunna be listening to their iPod anyhow? Ya kinda have to keep your situational awareness up out there.
When I was in Iraq, I kept my iPod in one of my ACU chest pockets INSIDE my body armor, cuz I didn't ever really want to test its durability like that. I suppose it would have hurt like a sonofabitch if I'd been shot in the chest, but, well, it would have regardless.
@OMG! Ginsu!: More than likely the soldier is using a m240b, they fire 7.62 (and given one is a tracer), and if thats the case he more than likely is a gunner on hmmwv. Even though i think its a very bad idea, i saw many gunners with an ipod headphone in while patrolling.
But ya, its probably just meant to be a cool pic given the song playing.
@OMG! Ginsu!: This does look like a setup pic. The rounds are tracers and the light from the Ipod at night would be a great target...but a cool pic non the less
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Uh, I don't think those are 7.62, folks. I could be wrong, but look at the scale. That Ipod is about 4 inches long, where the 7.62 round has an overall length of 2.75 inches.
Years ago I saw some footage taken from a reporter's camera who had wound up recording his own death. I don't think he was using a rifle stock mounted camera, but in the hot zone, and in a US uniform, I don't think it would make that much difference safety-wise.
@ChibaCityCowboy: Ernie Pyle is the war photographer whose last photo is of his dead body, shortly after he got killed by a Japanese machine-gunner during WWII, but there's another similar instance that happened more recently. In 2006, independant documentarist Brad Will was filming footage of the violent armed conflict in Oaxaca, Mexico when he was shot and killed. The video reportedly shows two armed gunmen in the distance, and right after one or both of them fire shots the camera was dropped. The belief is that Will actually filmed the shot that killed him. Both of these stories only show half of the story, and it's not the same half. One shows just the dead body after the fact, and the other shows just the killing act.
@Steeplebomb: Yeah, in a way. But if you actually look at Pyle's photo, you can't really tell that he's not just sleeping or unconscious. There's supposed to be a bit of visible blood coming out of his mouth, but it's a B&W photo that was shot over 60 years ago. The image quality isn't exactly the greatest. And with the video, you can't actually tell _why_ the camera was dropped unless someone tells you.
And when you get right down to it, neither of these men was taking a walk through the park. Both were trying to document the real horrors that take place very far away from our mostly-secure little corner of the world (in the entire last century, Pearl Harbor, 9/11, and the Unabombing are the only three comparable acts of violence that I can think of that have been perpetrated on US soil).
10/13/09
HUGE HULK legs, that's what...
10/13/09
10/13/09
From what I can see it seems like they are only stepping down a small bit to increase the rotation of the top shaft making the pedaling somewhat more productive.
But if they added a few more steps they could probably get that top shaft wizzing fast enough to power two or more laptops.
10/13/09
10/13/09
10/13/09
10/13/09
I got all I need so it's only the question of when I'll do it.
10/13/09
10/13/09
10/15/09
I aim to make it practical and disturb it as least as possible.
I'll post the results
^__^
The origin of the idea is from a while back, when I was considering how to keep my lifestyle in case of some horrific disaster, which would leave us without el. power for indefinite period of time.
Solar power is cool but this came up as the ultimate idea and totally practical, and as you said:
" seem easier, less shakey and can be powered (if needed) by one foot."
so you could take turns and keep it going.
It seams being practical has nothing to do with the engineering degree,
(:though I'm getting mine soon:)
:) #pedalpoweredolpcbeingtestedinafghanistan...
10/13/09
OLPC would like to welcome its latest addition to the engineering team, "The Professor" Roy Hinkley, M.A., B.S., Ph.D!
His assistant Gilligan is seen on a prototype of the OLPC charger.
10/13/09
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08/30/09
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08/28/09
08/28/09
08/28/09
08/28/09
Seriously though, that's really great. Photography sure can bring out the dedication in people.
08/28/09
08/28/09
07/19/09
My party affiliation aside, he keeps a "promise" about as well as Corzine does. I just had a family friend in special forces get recalled to Afghanistan earlier this week.
07/19/09
And ones staying are there to train Iraqi troops, not fight.
07/19/09
07/19/09
07/19/09
07/19/09
When I was in Iraq, I kept my iPod in one of my ACU chest pockets INSIDE my body armor, cuz I didn't ever really want to test its durability like that. I suppose it would have hurt like a sonofabitch if I'd been shot in the chest, but, well, it would have regardless.
Great propaganda...little else.
07/19/09
But ya, its probably just meant to be a cool pic given the song playing.
07/19/09
07/19/09
07/19/09
Yeah, I'm pretty sure those are .50 BMG.
07/19/09
07/19/09
BTW that is a fantastic site Jack, thanks for the link. Went straight to favorites
01/30/09
01/31/09
Ernie Pyle is the war photographer whose last photo is of his dead body, shortly after he got killed by a Japanese machine-gunner during WWII, but there's another similar instance that happened more recently. In 2006, independant documentarist Brad Will was filming footage of the violent armed conflict in Oaxaca, Mexico when he was shot and killed. The video reportedly shows two armed gunmen in the distance, and right after one or both of them fire shots the camera was dropped. The belief is that Will actually filmed the shot that killed him. Both of these stories only show half of the story, and it's not the same half. One shows just the dead body after the fact, and the other shows just the killing act.
01/31/09
wow. morbid.
01/31/09
Yeah, in a way. But if you actually look at Pyle's photo, you can't really tell that he's not just sleeping or unconscious. There's supposed to be a bit of visible blood coming out of his mouth, but it's a B&W photo that was shot over 60 years ago. The image quality isn't exactly the greatest. And with the video, you can't actually tell _why_ the camera was dropped unless someone tells you.
And when you get right down to it, neither of these men was taking a walk through the park. Both were trying to document the real horrors that take place very far away from our mostly-secure little corner of the world (in the entire last century, Pearl Harbor, 9/11, and the Unabombing are the only three comparable acts of violence that I can think of that have been perpetrated on US soil).