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  1. #111
    KyubiNoKitsune is offline Senior Member Respected Member
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    We need these if we want to make ATs:
    Carbon nanotube - Wikipedia, the free encyclopedia
    That stuff is a few times better than Kevlar. But I guess also a lot more expensive.

  2. #112
    sabret00the is offline Senior Member Long Time Member
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    Quote Originally Posted by sojakai View Post
    Some of this might be re-hash, but bare with me...I got heated and wrote as I read my way through the posts...

    Please refer to Chapter 6, Picture/Page 007 (Air Gear v02 007.png) The one with the AT cut-away.

    I am not sure, but it seems like everyone has forgotten that the wheelmotor doesn't spin...Only the outer most part spins, but the motor on the axil doesn't move.

    Cooling: Electric device, Electric Cooling. Just use a Peltier Heat Pump. Put the cold side to the motor and the hot side to a heatsink that air is forced through.

    Power: I'm not too good at this kinda stuff, so get ready to flame me for it.

    If you put in a heat reclamation system, like what they use in electric cars, you can turn the heat into energy and recharge your battery while you go.

    Using Fly-wheels, when you stop, they keep going and turn another motor (much smaller) that generates power.

    Use one of those circutes that bumps-up the power from the battery. I mean, if you can use one with 2 double-A's to recharge/power an Ipod, why not? (Lookup Mintyboost)

    Plus, the power can come through the axil or even a spacer around the axil that has wires that plug into the side during use.

    Gearbox: Make it just like the one on the Automatic Bicycles they sell on tv. The faster the wheels go, the more the centrifugal weights are pushed out and higher the gears change.

    Suspension: Not sure, but if the wheels are hinged into place, you can have a spring or actuator between that pulls them together. When you land, the wheels pull against each other. O===O or 0///0

    Wheels: Who says that we have to use just ONE Material. Outer...Wheel Rubber. Inner, Some sorta gel or another rubber. Add a small square of metal or a magnet, and you can just have a bicycle speedometer wired in the electronics (about the size of most bluetooth ear pieces).
    Good post, in the latest chapters they do state that the energy of AT's is used to it's fullest, so i'd guess that the heat is reclaimed just like you say in your post. However what i've noticed is that AT's recharge while static (i.e. it's the foot that's off the ground that recharges and it's the foot that's on the ground that does all the work) how do you figure that works?

  3. #113
    Jay3205 is offline Junior Member Newbie
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    Basing a real design off the fictional manga design isn't going to work. For one, the motor used in the manga would be an advanced hub motor. They do exist, but the smallest ones that are commercially available are bigger than a skate wheel, making them impossible to use.

    As for the "battery boosting circuit", it only works because iPods don't use much electricity in the first place. The reason they take so long to charge is because the recharging process reverses the chemical reaction in the battery, and that process reversal can't normally be done quickly without causing damage.

    Heat reclaim systems won't be effective at the size of a skate.

    Flywheels are the same as batteries. If you are charging them while you ride, then you are being counterproductive. Simple physics will tell you that charging a flywheel by rolling on skates will not give you any benefit at all.

    The wheels themselves are quite expensive. A custom made, pure urethane wheel will likely cost $100+ a piece for low volumes. Adding in special circuits and cores will cause that price to be higher.

  4. #114
    sojakai is offline Junior Member Newbie
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    Don't forget, We are trying to "Reverse Engineer" the A-Ts. While we don't have everything that we need to make them perfectly, we can reproduce them with what we have. And everything I suggested could be used together. I am not saying that just one will cure all the problems. One quarter doesn't make a dollar, but four do.

    For example, Cellphones. They started life as a stage prop for a show called Star Trek. Engineers saw it, and figured out how to reproduce one, but, it was as big as a backpack. So, as technology advanced it became smaller till what we have today.

    Oh, and you should look into how the power company sends power out. They use a Step-up process to transmit the power over a distance. Its a slightly different way of using it, but its the same as what I used as an example for charging an ipod.

    I think, that fly-wheels might be a possibility for the off skate's recharge, if the wheel is still spinning when the foot is lifted, the motor gets used as a generator. Try stripping out the cd tray from a cd-rom drive (Dead first) Use the tray itself as a handle, and put an LED on the end of the wires to the motor for the tray. When you pull the tray out it will power the LED.
    "I came, I saw, I went back to sleep!!!" Sojakai

  5. #115
    Jay3205 is offline Junior Member Newbie
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    Cell phones were not "reproduced" from Star Trek props. They were inspiration, but the technology itself is not based off that show. Similarly, a real (current) AT won't be based off the manga AT technology. It will be inspired, but the technology will be different. Considering the amount of pseudo-science Oh!Great uses, it shouldn't be a surprise that some of his technology isn't possible.

    Also, the Step-up process may bump up power, but it doesn't bump up the total energy. An iPod works off little energy and little power. A motor requires much energy and much power. The power problem is easily solvable, but large amounts of energy can't easily be stored in small spaces.

    Finally, I don't doubt that a fly-wheel *could* power a skate. The problem is that you are recharging it while skating. Imagine riding a bike, where half of the energy spent pedaling is saved in a battery while the other half moves you forward. True, you will charge the battery, but you will sacrifice half your speed also. In Perfect Land, your total energy won't somehow increase. In reality, transferring energy back and forth from a battery will produce energy loss... more energy than will be saved when you lift up your foot for a split second.

  6. #116
    sojakai is offline Junior Member Newbie
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    The tech-specs that Roddenberry and Crew came up with for the communicators in star trek was about 95% correct for the first cell phones. And that is before the Actual tech existed.

    And looking at the pictures from the manga, I would estimate that its about the same. Flywheels won't power it, just as you say, but they aren't meant too. They are just one way that you might be able to "recharge" the battery. And anyways, the battery could be a bank of capacitors with a battery starter. The battery gives off the starting energy, and the capacitors fire off to sustain it for a short time. When that foot is raised, the spinning wheels could act as a flywheel. When your not putting power to the motors, they could be used to supply power for a short time while the outer most part, the wheel, is still spinning.

    I agree that making wheels in small amounts could be expensive. So do what the R2Builders do, Tell everyone when you are having them maid and put everyones orders together. It helps lower the cost having one place make them all at once. The more that are made, the lower the cost.

    Last but not least... What are your ideas, Jay3205? Your quick to toss out mine, but you haven't suggested anything. Come up with something to help everyone reading. What you give us, might be the stepping stone that gets us that much closer to making A-Ts real.
    "I came, I saw, I went back to sleep!!!" Sojakai

  7. #117
    Jay3205 is offline Junior Member Newbie
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    I personally don't believe an AT can be made with current technology... at least, not one that moves fast (above 12-15 mph) and still looks like an accurate AT from the manga.

    If I were to make a motorized skate, I would use a small motor mounted on the back of the skate. No motor exists that will fit inside a normal-size skate frame and still move you fast. Of course, the motor will be visible on the back, but it is something that can be hidden under your pants. The first motor would probably be an electric scooter motor, similar to the ishoes, but only 3/4 the size since we can use two motors. Provided that works, I'd do the same thing, only with a slightly smaller motor. Repeat until you find a motor that is small enough to go in the skate (a currently non-existant motor) or decide to make the skate that much bigger. At least this way, we are getting one goal (movement) out the way instead of worrying about both goals (movement & appearance).

    Normal skate boot and frames have sufficient strength. I've seen someone get their skate run over by a car, and it was still wearable.

    Suspension... I don't believe is possible on manga-like scales. No matter how much you cushion it, you still have to decelerate a person within 2-3 cm of room. The only way to decrease this is to lengthen the landing time, which means to lengthen the suspension, making the skate bigger than what the manga shows.

  8. #118
    joakas is offline Junior Member Newbie
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    With all this neat engeneering things u guys are talking about, I wonder if other Air Gear forums around the world got a thread like this, it might be usefull to go around seeing what other people think about this, they could have seen something that you guys overlooked here, or even better (besides, its just better than just flamming the idea)... why not trow this idea to some engeneering or skating forum, maybe someone from a big companny reads it and invest some spare millions on the idea... there are some crazy people out there with the knowledge and money to try this, i mean take this out of a manga forum... maybe in the end we can get our mass produced ATs that can achive low prices...


    FLAME ON!!!! yeah!!!!

    PS. English is not my first languaje

  9. #119
    Kentam is offline Junior Member Newbie
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    Good trys, I will be not some brave to add rocket with my rollerblades, anyway it is funny. expecting to see your pictures

  10. #120
    kingdomking is offline Junior Member Newbie
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    z3.invisionfree.com/TheAtProject/index.php?act=site

    This is a site that is working on the AT project

    It is pretty lonely right now with only a few active members. Join if you are trying to get this actually done!!!

 

 
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