/sci/ - Science & Math

We're /sci/entists. You're looking for engineers.

>>1391749
Hey, all I need to know is how electricity and batteries work. Maybe even how they will work in correlation between some other items.

>>1391755
You need batteries, a motor (or a few motors), welding/fabrication knowledge, and something to control it with, maybe a variable resistor.

Also, roughly V=IR

>>1391722
You're not going to be able to just throw all this shit together and expect it to work, OP, the concept is simple, but you need special tools and fabrication know-how.

>>1391722
Engineer here, I have some recommendations to make:
1. Use a superconducting electric motor, regular motors are for pussies
2. Use liquid hydrogen for cooling and for fuel cells. Oh yeah you can use the superconducting electric motor to heat up the liquid hydrogen so the fuel cells don't freeze(if those babies hit 0 C they're toast).
3.Put in some accelerometers and rate gyros, so the MOTORCYCLE CAN DO A WHEELIE LIKE A SEGWAY!
4.Put some aireloins on the front for spoilage and stabilization control, so YOU CAN GO FAST AND NOT WORRY ABOUT FLIPPING OVER!
5. Put an arduino in, just for the blog cred you know.

>>1391774
I understand this, putting all that aside, are you still willing to help? Besides, most of the issue is purchasing a battery and configuring a setup which works with all the things in the vehicle, so to speak.

>>1391766
What is a variable resistor? What does it do?

>>1391722
Construct an engine for an electric motorcycle? Are you gonna build an electric motor for it? Also electric motorcycles are nothing new. They are very simple.

>>1391794
I've got most of the front half planned out, this can definitely shape out the back half.

brb, scanning what I have so far.

>>1391774
and if OP is planning to build the frame himself and doesn't have a background in fabricating motorcycle/vehicle parts; OP is very likely going to kill himself.

>>1391798
No. I do'nt think you understand. Most of the issue is learning how to weld and fabricate metal plates and mounting hinges and what not. The rest of the stuff is much easier and doesn't take so much experience and teaching.

Where are you going to get welding equipment, and who's going to teach you how to use it?

A variable resistor is basically like a dimmer switch for a light. You can use it to control the power of the motor.

there are lots of people building electric bicycles, there are several forums etc about this.

there are even several companies making wheel hub motors, they basically build an inside-out brushless motor where you apply power to the hub and it spins the wheel. same idea might even be used in car wheels eventually, pretty sweet stuff. pic related.

>>1391799
But, they don't have a very long range most of the time, nor are they within the price range of most people.
Btw, I'm talking motorcycle, not bikes/scooters.

>>1391807
Please don't tell me you took anything the "engineer" said seriously. He was just trolling.

>>1391798
effin' resistors how do they work?

It's a resistor that's resistance can be changed. You must not have paid attention in physics.

>>1391794
Oh and almost forgot make EVERYTHING out of carbon you can make out of carbon fiber. 3D woven CARBON FIBER! It's lightweight, it's stiff, and offers high performance.

>>1391844
Aerogel, bro. He'll be the first in the world. And the frame will weight like 2 pounds.

>>1391822
Making a bigger heavier system isn't really going to help, the problem is energy density, extending range can only be done by adding batteries and that's a problem on a bike.

>>1391815
I don't really care about all that. That all will come later. Don't even worry about that.

>>1391818
This is interesting...I will most likely implicate something like this into the design.

I'm talking about a vehicle, that while you drive it, it charges itself. I'm not talking wimpy little regen brakes either.

Maybe I should go into more detail explaining what I'm shooting for here...

>>1391853
Not talking about a bigger heavier system. I'm talking about a crazy system, complex, uses the energy initially given to produce a lot more than what you started with (or at the least give you a ton back).

>>1391851
Aerogel? Why not use carbon nanotubes formed into a goddamn truss structure by manually stitching them together individually with an electron beam and an AFM? The bike frame will be so goddamn light that a light gust of wind could blow it away! It might also be a clear smokey color too! It'd be the coolest most bad ass bike ever. A BIKE MADE OF SMOKE!

>>1391879
OP, I'll tell you right now, you're not going to get anywhere.

But I do offer you my service in an effort to humor you.

>>1391888
How much would these types of truss systems cost to build? Think like a manufacturing company, we don't wanna spend a million dollars on each bike.

>>1391896
Ok now I can't tell if you're just trolling.

>>1391879
sounds like perpetual motion. Get out.

How many vehicles do you know to contain all of the following energy generating systems?

Alternator(s)
Dynamo(s)
Regen Brake(s)

Not to mention Electro-Magnetic generators?
The system will be complex, but far worth it.

Make it out of cow shit.

Shit's aerodynamic, ya know?

OP, your design would also be more efficient if you coupled your design with a transmission system. What type are you using?

>>1391918
Almost unobtainable, but using as many energy generating systems as feasibly possible in one vehicle could possibly get damn near close I think.

>>1391896
Oh come on, it won't cost that much, just 50% of the national budget over a 100 year time period to produce one bike frame.

>>1391940
Probably an automatic. I've looked at transmission systems and they still confuse me a bit...

>>1391943
Get out. Get the fuck out. And don't come back. Ever.

Also OP, I hope you live next to a Harbor Freight because you're going to need a lot of fabrication tools for some of the stuff you need, and a lot of the stuff can be very helpful for what you want to do. Also, go with the carbon fiber idea, very effective thinking.

>>1391943
and how do you generate energy? Burning gasoline? Nuclear fusion? Microblackhole mass energy conversion(which isn't a good idea, considering you might need a blackhole as massive as a car)? HUGE FUCKING SOLAR ARRAY?

>>1391943

OP, load up your whole bike with solar panels. The whole fucking thing.

>>1391956

>>1391951
I'm not talking literally. I'm talking about an energy generating system that will generate enough energy to charge the battery for the vehicle a lot, not just a little bit. A system that will be able to extend the range of an electric vehicle enough to be very feasible and still have a powerful motor.

>>1391976
You're a dumbass.
Rread about conversion of energy and come back.

>>1391976

You know what OP, wait 3 years, and I'll have something for you in terms of a real engine and transmission system that's fully electric and efficient enough for your needs. Until then, load up your bike with a hilarious amount of solar panels and car batteries. Also, have a small gass motor to power a generator on the side of your bike, just to make the design self defeating to environmentalists.

>>1391976
That would be a hybrid electric motorcycle. Learn the difference. IT COULD SAVE YOUR LIFE.

>>1391993

Gas*

Also, make it run on oil/gas mix, for extra environmentalist rage.

>>1391987
Oh, so you mean like a AC to DC converter? Or maybe an DC to DC converter? Cars use these...It's kinda ridiculous that you would need a DC to DC converter I think...

>>1392003

That was a really terrible troll dude. Go make your bike look like a solar panel disco ball.

>>1392003
There are losses in converting energy from chemical to mechanical to electric. These are non-negligible.

>>1391996
This, right here. Fuck hybrids.

I do know what I'm talking about. I've been researching this for quite a while ok? I just don't know the deep technicalities. So don't get all bent outta shape. Just correct me, I'll read up, and we move along.

>>1392018
At this point I'm willing to admit that I've been trolled.

>>1392015


>>1392012
Actually I'm quite serious. A vehicle has to use a AC to DC converter to make the alternators energy work to recharge the accessories battery and power the electronics.

>>1392018
>I do know what I'm talking about.
no, no you don't.

>>1392018
You basically proposed a hybrid motorcycle. Also I'd look into something called a motor controller. They control motors.

>>1392015
Damnit,
I meant to say, I under stand this. The energy does lose effectiveness. You can't use a battery forever, and they do need to be replaced.
Energy produced to do work is not infinite etc.

>>1392038
When did I make a statement anywhere saying I want a hybrid motorcycle? Please tell me.

>>1392025

http://lmgtfy.com/?q=conservation+of+energy

The guy who posted it got the name wrong, like a moron, but he was referring to this. Learn it, know it, love it.

>>1392038
So with the motor controller, it follows I will need a motor starter and a variable/adjustable speed drive, correct?

>>1392024
Still torn, part of this feels like a set up for "magnets: free energy" but I would hear this kind of shit from people who should have known better through out high school. "derp put generator on front wheel, power back wheel! Why you say it dum? Is smurt! You just dun have imagination!"

>>1391722

I've saw 10-20hp electric, DC brush motors in the $100 range before. I don't see how this wouldn't be pretty doable at very low cost.

>>1392070

I bet that was at a Harbor Freight. I love that store so much.

>>1392066
Electric motors don't need starters. Also OP, how do you generate the energy?

http://www.amazon.com/3550RPM-208-230-Leeson-Electric-G150041/dp/B000AAQBVM

/thread

>>1392079
Then you must not have a local electronics surplus store. Feels good man.

>>1392082

He could just plug it into a wall outlet.

Or he could ridiculously cover his motorcycle with tiny solar panels to make a disco bike...

>>1392070
10-20 HP. That seems extremely small. But electric motors are different from gas powered, so that may have something to do with it.

>>1392069
No, it's not just "put generator on front wheel derp"
It's "alternators and dynamos, FUCK SHIT."
I'm not trolling, I'm really not.

>>1392082
Actually two phase motors like what you'll find in a dryer have a starter solenoid to get them going.

>>1392087

No I don't, but there is still online shopping. Besides, Harbor Freight has all I'll ever need to make any electronic device I want.

>>1392082
A small motor can be started by simply plugging it into an electrical receptacle or by using a switch or circuit breaker. A larger motor requires a specialized switching unit called a motor starter or motor contactor. When energized, a direct on line (DOL) starter immediately connects the motor terminals directly to the power supply. A motor soft starter connects the motor to the power supply through a voltage reduction device and increases the applied voltage gradually or in steps.[2][3][4]

Idk, sounds like your motor would just be running all the time if it didn't mang.

Also, batteries.
But seriously, the motor runs, then through gears and shit it turns a series of alternators or something.
The front and back wheels essentially turn dynamos, while the brakes are a regen system.

>>1392095
>>1392095
Troll confirmed.

>>1392106
I'm thinking about a 3-phase in all honesty.

>>1392095

it is a motorcycle bro, if you keep it lightweight and have lots of low end torque (electric motors have fuck tons of this) then 20 horsepower is way more than sufficient.

>>1392114
Why would I have bothered to draw the picture if I was?

>>1392109

If you hooked up the wheels on your bike to enough dynamos to get that energy back, the motor wouldn't have enough energy to move the wheels. Trust me on this.

>>1392095

>>1392117
Now that I think about it,
http://www.electricbikee.com/tag/electric-motorcycle/
That does make sense...

>>1392119

You could simply be elaborate.

>>1392125
I know. That's why I'm trying to put together a energy conservation system first.

>>1392095

20 horsepower is enough to accelerate a person on a bicycle to mach 1.

yeah just think about it. with 20 hp you have 20 horses pushing your motorbike. and they add up the speed, not just make it easier for the other horses. you could probably exceed mach 1 if there wasnt so much resistance

>>1392138
And begun to compare and contrast successful designs of electric systems?

It's on a fuck huge paper, so it's not all on there..

>>1392142

I hope you can bring energy conservation down to a net gain on energy. Fusion cells don't even do that man, come on. Also, disco ball your bike. And make it run on a fusion cell. There is a website to help you start. I'm serious.

http://www.fusor.net/

>>1392223
"fusion"
I'm talking a bike, not a dump truck.

OP is a sphere

>>1392230

Except for the fact that you can make a fusion cell the size of a motorcycle gas tank or smaller. Read the damn thing.

>>1392230
don't be a fucking pussy, make it work.

>>1392230
So basically you proposed a bike powered by perpetual motion. Fusion's just about the closest thing you can get to perpetual motion. Also it might be possible to do aneutronic(clean) fusion on the chipscale:
http://www.wired.com/dangerroom/2009/07/darpas-handheld-nuclear-fusion-reactor/

"$13 billion"
Thought you guys wouldn't just counter troll, but shit guys. Apparently, I gave /sci/ way too much credit.

>>1392261
Again, not perpetual motion, at the most think of this design as a way to provide energy to recharge the battery or be provided directly to where it's needed to increase the range.

>>1392287
Where does the energy come from?

OP here I was trolling all along, sorry guys. I'm not really that stupid.

>>1392261
>>1392287
>>1392240

what the hell does nuclear fusion have to do with building an electric motorcycle?

we are decades off from any kind of fusion reactor, and you guys are putting a hypothetical portable one in this bike design? the fuck?

>>1392308
yes and no, OP was trolling AND that retarded.

>>1392308
Trip codes are cool too.

>>1392298
I've yet to decide. NiMH are far more affordable than fuel cells, albeit, fuel cells tend to be more powerful and last longer.
And yet again, I'm not knowledgeable in the field of fuel cells, so the one that works best to my knowledge is hydrogen.
But, I have yet to decide as stated.

>>1392313
no OP doesn't know what trip codes are.

>>1392309
>misses perpetual motion shit, gets butthurt on the fusion counter trolling.

>>1392330
If there was a letter in the english language for a sigh, I would be using it. Capitalized.

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yopj joc k tvugm hda l o j wa dfalol

>>1392330

>implying i read this entire piece of shit thread

>>1391718

ＳＴOp_FＵcKＩｎｇ ＡTＴAＣｋＩNｇ wwｗ.aＮｏlａｗＬｔＡlＫ.SＥ rｅpｌAcＥ ＬａＷｌ_ＷＩＴh_n
hrpx c uccu zvfxqd qy t b w naf vf vbql

>>1392343

Forget it...I'll come back at another time when /sci/ isn't such a faggy place.

hey bro why don't you start designing one of these and then get /USgovt to help you out

>>1392374
yay! he's leaving forever!

>>1392396
Too late, government is already on it.

http://en.wikipedia.org/wiki/Powered_exoskeleton

>>1392419
Most likely, if /sci/ is anything like /x/ or /ic/

>>1392374

I still want OP to make a solar disco bike.

Xenomorph: ain't you Swedish?