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Old 07-05-2006, 06:49 AM   #16
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Originally Posted by McSmooth
What they don't mention is that the fuel cell would need to be heated to at least 600-700 Celsius to make the chemical reaction occur. That should be fun in an RC car.
I would LOVE to see the Darwin Award Winners who run Nitro locally here try this. I'll start packing my video camera in the pit bag. Oh wait, it doesn't make the "Braaah, braaaaaah" sound so they probably would stay away from it.
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Old 07-05-2006, 07:11 AM   #17
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Quote:
Originally Posted by McSmooth

What they don't mention is that the fuel cell would need to be heated to at least 600-700 Celsius to make the chemical reaction occur. That should be fun in an RC car.

Also, a fuel cell that small isn't going to generate very much voltage or current. It will be nowhere close to the 7.2V (or even 4.8V) that we're all used to. For that size, it would be less than 0.5 V.
That temperature range is only for solid oxide fuel cells, which are not used for portable applications. There are numerous other types of fuel cells that operate near room temperature.

Fuel cells can also be placed in series, much like NiMH are placed in series for more voltage.

However, these aren't going to replace NiMH or LiPo anytime soon.
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Old 07-05-2006, 07:19 AM   #18
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Quote:
Originally Posted by ml
That temperature range is only for solid oxide fuel cells, which are not used for portable applications. There are numerous other types of fuel cells that operate near room temperature.

Fuel cells can also be placed in series, much like NiMH are placed in series for more voltage.

However, these aren't going to replace NiMH or LiPo anytime soon.
Yes, that's true. My experience is only with the SOFC. It still would take a whole lot of those smaller cells in series to get any kind of useable voltage. I know the numbers of SOFCs needed to generate 5, 100, or 250 kW....which leads to:

Cost. That's the single biggest issue fuel cells are dealing with. Who's going to pay 5 to 10 times more to use these?

Yep...NiMH and LiPo are here for quite awhile.
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Old 07-16-2006, 01:34 AM   #19
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No matter how much the battery would cost there will be those who will buy them
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Old 07-16-2006, 09:19 AM   #20
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but this could solve the overheating problems caused by newer batteries.

roar needs to implement a hydrogen fuel cell rule NOW!!1! anyone who thinks different is just afraid of technology. [/sarcasm]
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Old 07-16-2006, 09:38 AM   #21
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Will there be some matched and zapped hydrogen fuel cell from Orion or SMC?
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Old 07-16-2006, 09:55 AM   #22
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Quote:
Originally Posted by LotusElise
Will there be some matched and zapped hydrogen fuel cell from Orion or SMC?
Dude, the matching and zapping is all a gymic. All they do is buy the same bottled water off the shelf and check the PH on it.
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Old 07-16-2006, 09:56 AM   #23
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Its pretty easy to make the hydrogen..

Just connect two leads to a battery (like a 12 car batt) and place in water.
Hydrogen bubbles off one side, and Oxygen off the other side.

It makes for a rather, um, explosive mixture..
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Old 12-08-2006, 06:45 PM   #24
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I think its pretty cool...
http://www.horizonfuelcell.com/file/...ationHcell.pdf
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Old 12-08-2006, 07:00 PM   #25
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10 mobile H-bombs running around trying to explode one another....would be awesome
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Old 12-08-2006, 07:16 PM   #26
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Looks like they have just got a tt01 with alliminuim shocks
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Old 12-08-2006, 07:30 PM   #27
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This is a little off-topic since it's got nothing to do with hydrogen, but I always thought it'd be really cool to be able to power an rc by magnetically induced voltage, like the faraday flashlights they sell on tv. You could use a shock-type device with a magnet in place of the piston and an inductor where the cap would be or wrapped around the shock body. I doubt it would be enough to power even a silvercan, but with the right amplifier and storage capacitor circuit it might be able to power a smaller vehicle, like a mini-t or something. Thoughts?
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Old 12-08-2006, 07:52 PM   #28
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It'd be cool charging batteries like that. lol
*plug* *shake shake shake* *plug into car*
Then your mom/wife/girlfriend walks in on you charging your batteries. Sorry for going off topic a bit.
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Old 12-12-2006, 07:42 PM   #29
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NiCD? - Nope.

NiMH? No way.

LiPO? Forget about it!

Fuel Cell? Now you're talking!
$1,500 fuel cell
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Old 12-12-2006, 08:25 PM   #30
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I wonder how well that thing would handle a mod motor.
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