Comments on: Charging while cycling

Question: Charging while cycling

sien — Wed, 28 Nov 2007 18:07:52 -0800

I'm going on a 10+ day bike ride and want to be able to use my fantastic Nokia 6110 (with built in GPS) and my ipod Nano as long as possible. I bought a cheap solar panel charger on ebay and have found that it's useless. What are the best solutions? So far under consideration are better solar, a spare battery for the phone and emergency chargers that can be recharged when I can get to mains power. The 'name brand' solar chargers around, the solio and the freeloader also have negative reviews. The Freeplay 12V looks cool, but has also got some pretty poor reviews (but at least it looks like it works). What would you recommend?

By: outsider

outsider — Wed, 28 Nov 2007 18:34:12 -0800

I would think some kind of electrical battery exists that uses your bicycle tires / pedaling power to generate electricity. I have a light on my bike that is powered by rubbing against the wheel, it might slow you down a little bit but so what?!?!

By: lilkeith07

lilkeith07 — Wed, 28 Nov 2007 18:38:08 -0800

Are you handy? Could you possibly make a charger and hook it up to your bike so while you pedal it will charge?

On preview what outsider said.

By: sien

sien — Wed, 28 Nov 2007 18:52:50 -0800

outsider : that setup is awesome, I couldn't make it myself however.

By: TomMelee

TomMelee — Wed, 28 Nov 2007 18:53:14 -0800

charger
detail

Boooo, do it yourself!

By: artdrectr

artdrectr — Wed, 28 Nov 2007 18:55:32 -0800

Just asking: What kind of bike trip? You won't occasionally be eating at restaurants or visting areas where you could plug them in an empty wall socket for a while?

By: sien

sien — Wed, 28 Nov 2007 18:56:32 -0800

Has anyone tried an emergency charger? ( or this hand cranked one )

By: sien

sien — Wed, 28 Nov 2007 18:58:55 -0800

Sometimes it's good to ride when riding outside. I won't do it all the time, but batteries are still an issue.

So, could that line of argument be left there.

By: dondiego87

dondiego87 — Wed, 28 Nov 2007 19:18:03 -0800

Seems like getting an emergency charger (powered by AA or AAA batteries) would be easiest here. Although you'd probably be lugging around a good deal of weight for that, but maybe no more than for the solutions mentioned above.

By: pupdog

pupdog — Wed, 28 Nov 2007 20:40:28 -0800

I have a Life+Gear 6-in-1 PSD at home for when the power goes out, or to take on trips. It'll provide enough charge for an emergency call. It's not enough to power your stuff for regular use, but couldn't hurt to have something similar along. Life+Gear seems to be pretty US-centric, but I would imagine similar products could be found, especially at a sporting-goods shop. I bought mine here in the states at Wal-Mart for about half what the company charges direct, and have used it a few times on my little Kyocera phone just to see how well it works. With 5 minutes or so cranking I get enough juice for an hour or so standby, or about 5-10 minutes talk.

Not an answer to the larger question, just a suggestion for something to pack along as an extra.

There's always Voltaic bags, or PowerFilm foldable/rollable chargers. I know Joel over at BoingBoing Gadgets isa voltaic fan...

By: pupdog

pupdog — Wed, 28 Nov 2007 20:41:13 -0800

Shoot, goofed the link for the Life+Gear

By: furnace.heart

furnace.heart — Wed, 28 Nov 2007 21:09:00 -0800

MINTYBOOST!
I ~~made~~ assembled one of these from the kit, and it works fantastically. i have an ipod video, and it adds several hours to it's life...i can only imagine what it'll do to a nano.

It's not like AA batteries are expensive, or heavy.

The kit is super, super easy to put together, and it's a wonderful beginner DIY electronics project.

By: Orb2069

Orb2069 — Wed, 28 Nov 2007 21:53:29 -0800

A generator that does not drag. 6v, 3w - With a little voltage manipulation, you should be set - Just be careful about overvoltage: they can really pump on downhills - A ++ system would have a few NiCds in it to absorb the overvoltage.

By: felicopter

felicopter — Wed, 28 Nov 2007 22:32:31 -0800

Despite the similarity in the names, Freeplay's relatively new "FreeCharge 12V" is not the same product as the earlier "FreeCharge" that was distributed by Motorola. So the review that you linked to does not apply. (Also, the review was not all that negative, so the "0.0" I see there cannot be correct -- perhaps the 2002 review is so old that the data format has changed and the current site cannot access the old data.)

The earlier product contained a battery (increasing its weight) while the new one pumps your cranking power straight into your phone or iPod.

By: sien

sien — Wed, 28 Nov 2007 22:50:49 -0800

Orb2069: That is fantastic, I'll talk to some EE mates about how easy that would be to hook up.

felicopter: sharp eyes and good points about that setup.

Thanks to everyone thus far for their answers, heaps of good ideas.

By: pgoes

pgoes — Wed, 28 Nov 2007 22:56:32 -0800

I haven't tried it, but the Brunton SolarRoll looks interesting.

By: Ryaske

Ryaske — Thu, 29 Nov 2007 07:24:25 -0800

I was going to suggest one of those old fashioned rim-rubbing generators for head lights. It sits on its own spring loaded lockable bracket that enables you to flick it on-to and off-of the rim when you need power and can afford the slight drag it will give you. They are very small and light.

But, Orb2069 came up with a more up-to-date version that definitely seems superior! If you dont want to mess with voltage manipulation, get one for both hubs and have full 12V. Not sure if it will work with the gear cassette in the back though.

The only downside I see if that you can't shut it off like you can with the flick one. But, I'm sure if you remove the load the generator won't drag much if it all.

I might just get one for my bike...

By: phredgreen

phredgreen — Thu, 29 Nov 2007 07:30:06 -0800

just a thought, because i have no idea how this would be implemented, but you're going to be riding a bike for ten days straight. that's alot of energy being put into the endeavour.

when i was younger we had this little light on my bike that hooked up to a turbine that was driven by clamping it next to the wheel so the wheel spun it.

there's got to be some modern-day rig or perhaps some creative engineering using older stuff that would allow you to do the same thing to generate power enough to charge your devices.

By: phredgreen

phredgreen — Thu, 29 Nov 2007 07:30:23 -0800

gah! the one time i don't preview...

By: ObscureReferenceMan

ObscureReferenceMan — Thu, 29 Nov 2007 10:36:17 -0800

I bought an Energizer AA charger (flash site) for my phone. Tried it, briefly, just to see if it worked. It did. But I haven't "acid tested" it (phone battery completely dead, charge, see how long I can use).

I saw a hand-cranked cell phone charger somewhere, but can't find it. I thought it was one recommended by Doug Ritter at equipped.com. But a quick search there showed nothing.

By: sien

sien — Thu, 29 Nov 2007 12:55:21 -0800

Thanks for all the great answers. I think I'll try a backup light power with AA or AAAs and a hub dynamo.

I'll put what I do and how it goes in here later.

artdrectr: I don't really know if I'll have much access to power points. The trip is around Tasmania and I'm hoping that I'll be able to camp at free places that won't have electricity as much as possible.

By: ObscureReferenceMan

ObscureReferenceMan — Fri, 30 Nov 2007 06:20:27 -0800

BTW, here's the crank charger.

By: sien

sien — Sun, 13 Jan 2008 20:04:40 -0800

In the end I went with spare batteries for the camera and chargers for everything else.

One thing that I'd missed was that Tasmania only has Telstra (an Australian phone company) for reception. Everything else there doesn't work, so my phone was pretty much useless. I did use the GPS on a few occasions. But on a bike in the countryside once you know where you are you don't need the GPS as the next turn won't be for a while.

I ordered a crank charger / flashlight thing that didn't arrive until I'd left on ebay.

The trip was great.