Hey guys,

just registered the domain at-developers.net and set up an IRC Channel on euirc so we can discuss and share our stuff there. I'm going to design this a bit and set things up. There's also a bot called AT-dev-bot which logs the discussion and saves it into a database so actually important stuff doesn't get lost. I'm also going to create a dev map so we may be able to create local dev teams to build things up.

I'm posting more details tomorrow.

@tokuin: I believe no one actually thought about jumping 100 feet high or driving at speeds of 80km/h or so 😉

yeah lol in the anime they struggle to get over 33 meters -.- 100 feet in the air isnt what we wer aiming for lol.

i was referring to when they jump from high buildings and such and btw 33m= roughly 100feet or more lol. But yeah those were just examples, the point was shock absorption is unnecessary. And a few ppl have mentioned going the same speeds they go in the anime, which is just impossible at this point.

I'll shoulder the burden and carry you all up to the sky

thanks for adding at this point =D

at this point its true its impossible to reach speed like in the anime
we can't even go 1meter per hour 🤣
because we don't have any motors yet that has our ideal power and speed
so please stop talking about other thing people!!!
what important now is the motor!! 😉

what you guys think of these?

http://www.pmlflightlink.com/motors/GN.html
http://www.pmlflightlink.com/motors/GM.html

this company has a huge range of motors, so there could be something that might work for now!

on that site wer does it say how big they are?

@MangaMadMonkey:
http://www.pmlflightlink.com/pdfs/GN_series.pdf

They weight 1.5 kilo per motor...

I just sent them a mail requesting some help regarding selection of a suitable motor. It looks like they really have something we could use:
http://www.pmlflightlink.com/pdfs/eureka.pdf

MangaMadMonkey is asking how big is it!!!Not its weight sargodarya...
so...........how big is it? 😕
btw
sagordarya I already posted this
http://www.pmlflightlink.com/pdfs/eureka.pdf
earlier in this forum
but tokuin said in order to buy that we need to have a big company...
and we don't even have a small one 🤣

@McBlaise: The dimensions of the motor are also mentioned in the posted document, the weight was just one thing I thought which would be way to much for the motor.

As mentioned earlier: The IRC server now is available in
Network: euIRC (connect i.e. to irc.de.euirc.net)
Channel: #at-developers.net

The bot in there logs everything automatically so maybe we should make a meeting where we discuss about everything we have now. Create a checklist what we need, what needs to be done, who cares about what etc.

It's true that company won't sell to individual buyers unless you buy a large number of units. But we will have that problem with most companies. however i think the motor mentioned by deathsabre is more suitable to our project. If you don't know what im talking about, here is the link again.

http://www.polysci.com/Motors/silencer.html

I'll shoulder the burden and carry you all up to the sky

Is the plan still to use or convert to in-wheel motors? Because in that case, I can't really picture how we would use the silencer series as most of them in the correct power-range are wider than 50mm. Now I'm not very proficient with motors, but it feels like that would be very difficult to fit inside a wheel that is only about 30mm wide.

However, I mailed PML about their nano-wheel and got the following;

Quote from PML

Dear ####

You have a very interesting concept, however the Nano wheel technology would not be suitable as the power required would be far too much for the available space.
In addition you would require the user to carry a heavy battery pack in
order to get any sensible range.

Nice Idea but not practical using this technology.

Kind regards (name left out)

So that pretty much blows.

But I was thinking about the battery needed, and playing around a bit with autodesks' inventor (a 3D-modeling program for you who didn't know) and if we're going to fit the "brain" so to speak, in the frame, we'd have an aprox. 15x8x3cm area of empty space to fit either a battery, the circuit board, or anything else. Obviously this can be changed on demand, but I just thought the frame looked quite stupid if made bigger. And it's probably possible to fit something inbetween the frame and the boot as well.

But as for the batteries, I'm no battery-expert, but from what I've read about Lithium-ion polymer batteries, they come in small cells which you add together for a higher voltage and/or total capacity. These cells range very much in size. A company named Altair apparently made some ground-breaking new batteries, and these cells are 20x10x1cm (roughly) per cell, but pack 11Ah per cell, and a nominal voltage of 2.3V.

So we'd need to find smaller cells in order to stack up enough of them to hit enough voltage to power our motors (I think I heard ~14.4V somewhere?) and fit those in that area.

Anyways, I was thinking of a frame design differing from conventional rollerblades (reference) by having it all molded into a single shape, somewhat like the image here. This way you could mount a smaller boot upon it, and fit electronics inside the frame relatively safe from your foot. I might post an image of the idea later, and I would already have done it if my inventor hadn't crashed on me earlier.

And also; if it hasn't been posted already, this is a great picture of Oh!Great's idea of the innards.
(EDIT, also, conceptual dreaming)Oh and to add; if they would be throttled by a pressure-sensor (come to think of it, the eureka PDF mentions something like that about the suitcase motor) embedded into the boot, wouldn't it suffice to have the motors accelerate the current speed by a factor dependent on how much pressure you apply? I.E. You push with 20N of force, and thus the motors accelerate your current speed with a factor of 1.2. So if you were going at 20km/h, they would accelerate you to 24km/h. This way the battery would drain slower as these accelerations only take a second or two, and you wouldn't rely solely on the motors to go forward. Because, let's be honest, the idea isn't to mount two scooters on your feet and use an RC-remote to accelerate, it is to make a pair of rollerblades that enhance your speed and mobility.

And also, even though the information might not be what you're looking for, I've gathered a bunch of possibly helpful links in the document I posted earlier. Here it is

Sorry i haven't been on much but have any of you figured out the motor and how too generate enough energy too make it go acconting the weigh

Life is mean and death is the Median

@goos
now your talking 🤣
nice idea....
hey tokuin please read goos's post and I'm thinking about the batteries ......
could we use the same batteries used in le wheelmotor?

The "le wheelmotor" project is the same as this guy's right? Because in that case, he uses Lithium-ion polymer batteries (Li-po) embedded in the frame of the scooter. That type of batteries are the most efficient ones on the market right now (..I think) and would probably be the ones we would have to use in order to get enough range and power to the motors. He however fits 8 cells, iirc, inside the frame, which is far more than we could fit inside the air trek frame.

As far as I've gathered, the advantage of the Li-po batteries compared to conventional Lithium-ion batteries is that they can be made in rectangular shapes instead of cylindrical, and are possibly slightly more powerful. However they are apparently also somewhat dangerous. (I.E. spontaneous combustion if charged improperly)

And; Has anyone got any clue how pancake motors work?
Perhaps one could set it up with two of those, somewhat like this or similar? I used colors to compensate for the fairly unsubstantial scribble, and the red would be the wheel, and the blue/green the frame.