Move over solar, you've got competition...

[Westbranch]

visions of the emergency wind-up radio of old... 

https://www.hand.energy/


ADD:  the site is verrrry sloooow to load, needs a minute or more to show all the bits of info

[TomW]

Curious device.

I couldn't get some pages to work so never saw "how" it works or the electrical specs just that it is great and charges "devices".

The idea of such a device is sound. Outlets to recharge are not found everywhere so it would be nice to keep around on a camping trip, bike trip or other remote activity.

Pretty sure it won't run my AC,  however, so I will be keeping the panels awhile yet.

Thanks for the share!

Tom

[Westbranch]

Tom, note the additional comment above, I found it so slow I almost closed one page as it was coming in...

[TomW]

Tom, note the additional comment above, I found it so slow I almost closed one page as it was coming in...

Too many graphics too little information. Typical of vaporware. If you can't dazzle them with brilliance, baffle them with bull$hip. Looks like they don't have any to actually sell yet but you can "preorder" . They made sure that page arrived first.

Still a neat idea for those who need to be connected with no access to a juice bush.

Still no clue how you create the energy input? Looks like you just wobble your wrist and "something" turns at 5KRPM.

Would love to try one. Maybe it will become a viable product one day!

Tom

[mike90045]

I doubt it gets past vaporware
World Class Bicyclists get what 75W power generation on a bicycle generator .  That's a pair of legs and torso all working.  To harvest much energy from some wrist action, is doubtful.  I guess at 2 hrs for 1 bar of battery charge on a phone

[ClassicCrazy]

I doubt it gets past vaporware
World Class Bicyclists get what 75W power generation on a bicycle generator .  That's a pair of legs and torso all working.  To harvest much energy from some wrist action, is doubtful.  I guess at 2 hrs for 1 bar of battery charge on a phone

Mike ,
World Class bicyclists make a lot more energy than that. I was zipping down the road at 25mph on my ebike - I know it was taking 400 to 600 watts out of my battery. And there was a guy who passed me by peddling .  Anyway I think if you were standing up pedding hard with lot of effort like going up hill that would be around 200 watt generation . 

Anyway not many passed my ebike at 27 mph but there were a few guys who could really fly on a bike.

But yeah that wrist genertator is bogus !

Larry

[ClassicCrazy]

Here are the specs from their webpage

"To charge the batteries of HandEnergy you need to spin it for 40-60 minutes. It's not that long and hard and it trains your hands. The speed of charging a smartphone or other device from HandEnergy is the same as from a socket or. If you spin HandEnergy and charge a smartphone directly it will take 30% more time due to lower current."


"What is the voltage and current of HandEnergy?

HandEnergy generates 0,8 A and 5 V to charge built-in battery. For further charging your devices it's transformed to regular 1A and 5V."


So yeah I want to see someone twist their wrist around like that for one hour  - ouch ! And I bet to get the full 0.8 amp out of it  you have to really wing it around a lot more than they are showing. Of course if the battery in it is low it is going to take a lot more force to charge it than if the battery is full.

What a bogus product and claims ! Any one of those small fold up solar panels would out perform that thing.

But maybe if you played a game of baseball with that thing it would charge up the battery - wonder how it holds up to getting batted around !

Larry

[CDN-VT]

visions of the emergency wind-up radio of old... 

https://www.hand.energy/


ADD:  the site is verrrry sloooow to load, needs a minute or more to show all the bits of info

Lots of Robos & searches is why it is slow !
Nada & funny .WestB , your caught wiggling now-A-daz & then your calling home for a ride !
40-60 Mins !!! and thats if your fit !


Sorry I see a funny in this : https://www.youtube.com/watch?v=hF4OlKKrFfI

Shake weights

VT

[mike90045]

human power
Cycle power

https://en.wikipedia.org/wiki/Human_power#Available_power
A trained cyclist can produce about 400 watts of mechanical power for an hour or more, but adults of good average fitness average between 50 and 150 watts for an hour of vigorous exercise. A healthy well-fed laborer over the course of an 8-hour work shift can sustain an average output of about 75 watts.

http://mapawatt.com/2009/07/19/bicycle-power-how-many-watts-can-you-produce

The current record holder for the Hour Record is Ondrej Sosenka and the website BikeCult.com has an estimate of his average wattage during his Hour Record at 430 Watts!

https://en.wikipedia.org/wiki/MacCready_Gossamer_Albatross    2.75hr flight
To maintain the craft in the air it was designed with very long tapering wings (high aspect ratio), like those of a glider, allowing the flight to be undertaken with a minimum of power. In still air the required power was of the order of 300 W (0.40 hp), though even mild turbulence made this figure rise rapidly.

[ClassicCrazy]

Those figures make sense Mike.
The reason the guy who passed me peddling with his 300 to 400 watts of leg power is probably because he didn't have the extra weight of batteries and hub motor that I was hauling - and the extra wind load too . But if I had gone with 72v of batteries instead of 48v I had there is no way he would have passed me by ! But that is too fast for a bike on a busy city road .

Larry

[CDN-VT]

450 watts is a very well young MAN who is fit PLUS !!
We had a few Gyro toys that were wrist driven !!
YA right , how to hurt yourself !!
Wrist was sore for days after playing
Glad this in Rag chew
VT

[russ_drinkwater]

LMFAO CDN you are a hoot!
But wait there is still more!
I might send that link to my old stepmum she will get a laugh from that one.

[CDN-VT]

See U got it , Many don't ..
Life is a adventure & enjoy all jokes & side smiles !!

VT

But wait there is still more!