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Old 02-27-2008, 12:57 AM   #61
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hah, its seriously a joke. While the technology does technically exist to transmit power wirelessly they have no hope in hell of powering an RC car of any size.

Hope the other products Speed Passion builds are less of a joke...
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Old 02-27-2008, 02:00 AM   #62
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haha no joke! wireless 'equalise' speed/accelerate setup good
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Old 02-28-2008, 08:57 PM   #63
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Just seen this on SP's website, nothing new apart from that pic in the bottom left corner. Base station?



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Old 02-28-2008, 09:27 PM   #64
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just hope we dun get fried by the wireless power transmission. interesting concept tho.

But i wonder if it can supply enuf juice to power hungry mod motors.
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Old 02-29-2008, 07:47 AM   #65
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Until I see it working, I don't think you can push AMPs through air. It seems more like a publicity scam to get attention.
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Old 02-29-2008, 08:23 AM   #66
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I have seen those pads for charging cellphones and such...
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Old 02-29-2008, 08:26 AM   #67
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I think everyone should be WAY more focused on the timeline..

"Coming soon 2009"

Why is everyone so worried about it now when the "working production prototypes" won't be tested until 2009?
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Old 02-29-2008, 08:27 AM   #68
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Seems logical, with some huge ass capacitors in that unit if that indeed replaces the battery.

Still, I cannot see how much more green this would be in the long term with energy leakage from "the pad". Especially with the amount of energy the pad will have to put out to charge a 1/10th vehicle for at least a 5 minute race. It would be more efficient just to plug in the capacitors and charge directly.
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Old 02-29-2008, 08:35 AM   #69
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And you guys wonder why I roll my eyes at SpeedPassion. Way to mock important issues (like being green) for your little attention grab.

Last edited by syndr0me; 02-29-2008 at 08:49 AM.
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Old 02-29-2008, 09:03 AM   #70
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Quote:
Originally Posted by syndr0me View Post
And you guys wonder why I roll my eyes at SpeedPassion. Way to mock important issues (like being green) for your little attention grab.
maybe you should roll your eyes once they launch the product, and we know for sure what the new tech is all about For now, we can only guess
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Old 02-29-2008, 04:20 PM   #71
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Will the date be 1 April by any chance, hope so as Australia gets it before US by a day.
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Old 02-29-2008, 04:26 PM   #72
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Quote:
Originally Posted by oXYnary View Post
Seems logical, with some huge ass capacitors in that unit if that indeed replaces the battery.

Still, I cannot see how much more green this would be in the long term with energy leakage from "the pad". Especially with the amount of energy the pad will have to put out to charge a 1/10th vehicle for at least a 5 minute race. It would be more efficient just to plug in the capacitors and charge directly.

Maybe it's more green because you won't have to worry about throwing batteries out? Less physical waste rather than a power usage issue.

Besides, a car powered by smoke and mirrors has to be more green.
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Old 02-29-2008, 04:40 PM   #73
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why do we have to go "green" with electric rc, one word "stupid". I dont really understand what it is, electronics all in one?
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Old 03-07-2008, 05:41 PM   #74
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Very skeptical!

The most common use of wireless energy transfer today is in RFID tags. These are the things that you commonly find in Music Stores and Libraries. When they pass through the detectors (which produce a rf signal), the signal induces power in the tag allowing the chip to power up and transmit a response. These tags do not have any battery backup and rely entirely on self-generated power.

Long distance transmission of wireless energy has been limited to microwave frequencies which has raised potential health risks and has therefore not been implemented.

At the 2007 Consumer Electronics Show a new company called ‘Powercast’ demonstrated some devices that won them, ‘best emerging technology’, but all of these were limited to a few metres and involved 'trickle charging'.

Current technology can't even charge a laptop at a distance but they can manage a toothbrush

Now with regard to R/C

Let’s assume that a race track is 20m x 20m and the power source is situated in the centre – this means that it has to be capable of generating power over a 10m radius.

At peak discharge let’s assume that a motor will draw 30A. 30A x 7.2v = 216W
So if the car was immediately next to the power source 216W would be sufficient. But the car might be 10m away from the source so by applying the inverse square law it would need 100x this power = 21600W = 21.6KW. Now there are 10 cars on the track and each one needs its own fix so that is now 216KW

216KW is serious power!

My stand-by generator for power cuts at home is rated at 1.2KW - makes a lot of noise and consumes petrol at an alarming rate! I can't imagine a unit 180 times as big capable of producing 216KW in the middle of your track!
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Old 03-07-2008, 06:16 PM   #75
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just use solar panels,

its wireless enough with out the fancy stuff.
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