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- - New electric bike - 100lb/ft @ 0rpm!!! (http://forums.sv650.org/showthread.php?t=125107)

Re: New electric bike - 100lb/ft @ 0rpm!!!

Quote:

Originally Posted by thor (Post 1773520)

You think that petrol engines are that efficient? They are like 30%-40% efficient, even without the distribution, mining, storage costs that you factored in.

actually IC engines are only 15-30% efficient, but they'll still be better than an electric vehicle powered by a fossil fuel power station, which is only ~50% efficient tops before you even take into consideration the distribution losses...

of course if we embrace nuclear power stations we could be producing enough clean power to run the whole of the UK on electric cars, trains etc and still sell the excess back to other, less forward thinking, countries, but that would take a government with balls big enough to ignore the ridiculous "won't somebody think of the children" green lobby, and that won't happen any time soon...

Re: New electric bike - 100lb/ft @ 0rpm!!!

Quote:

Originally Posted by the_lone_wolf (Post 1773521)

hydrogen isn't a fuel, it's an energy storage medium - you don't produce hydrogen but rather split water into hydrogen and oxygen, these then recombine to produce water and give off energy in the process

the kicker is that it takes at least as much energy to split water into hydrogen and oxygen as you get back out when you recombine them, in reality you'll lose energy in the processes, so it's better to just use that evergy to power the vehicle in the first place if you can, if you can't it might provide an efficient way of storing energy, but it's not a fuel like petrol that you can dig from the ground

i'm voting for "Iron Man" style personal nuclear generators:cool:

right, lets get down to the bookies :-) My money is on hydrogen cells for the future. Its the only one that delivers the same convenience as we have with petrol/diesel. Distribuition and storage may be tricky but that can be overcome. Getting the ditribution network up and running first is the main obstacle, particularly without any real demand or incentive yet.

Re: New electric bike - 100lb/ft @ 0rpm!!!

Quote:

Originally Posted by flymo (Post 1773532)

right, lets get down to the bookies :-)

i've no doubt we'll see mass introduction of hydrogen fuel cells in the future

i'm saying that hydrogen isn't a fuel like petrol, it doesn't just magically appear for free using a bit of leccy and some water, it costs energy to produce, and we'll have to find the energy to produce the hydrogen to power the fuel cells from somewhere

my bet is it'll be nuclear power, once we start getting rolling power blackouts and petrol hits £10/litre we'll realise we should have started building more of them twenty years ago (from then, not now)

Re: New electric bike - 100lb/ft @ 0rpm!!!

+1 for nuclear power

Re: New electric bike - 100lb/ft @ 0rpm!!!

Quote:

Originally Posted by thor (Post 1773366)

So!!!??!?!?

I will accelerate like a *******! Imagine getting double the torque of the SV, everywhere in the rev range, all the time.

Not everywhere it drops off from 60mph, only producing half by 150mph

Quote:

Originally Posted by AndyBrad (Post 1773368)

yup,

not a lot of pics were there?

Yes, just have to find them - they look great, but typical fanatasy stuff eg no numberplates/indicators/mirrors otherwise looks great

Quote:

Originally Posted by thor (Post 1773369)

Seriously, 40mph for a bike is a bit **** if we are honest.

Anyway, it's pretty radical design. I quite like it.

Me too :D what's 40mph? it can do 150mph

Quote:

Originally Posted by SVDragRacer (Post 1773390)

Ok so the range is 150 miles and it takes 2 hours minimum to charge.....

With the SV I've got 155 miles from the tank, then 5 minutes to re-fill then you're off again.....

You don't have to stand there pouring the electricity in for 2 hours, plug it in & go to bed or something - would be great as a commuter bike

Quote:

you'll look better,

disagree strongly

Quote:

Plus what's the point in extreme acceleration if you cant make a lot of noise doing it?

Oh grow up :roll:

Quote:

Originally Posted by mototech (Post 1773419)

the only way electric bikes or cars are every going to catch on is if they perfect the hydrogen making process, people just arnt going to put up with having to recharge every 150mls.

I would love to recharge my commuter for less than £2 in my garage overnight than make a special trip to a petrol station that charges me £15

Quote:

Originally Posted by Daimo (Post 1773420)

Also, 150 mile range, sure at 5% throttle constent. Now put that on a twisty B road and watch that drop to about 80 miles :lol:

That would still be fine for a commute and still costing you 15% of the petrol cost

Quote:

Originally Posted by ThEGr33k (Post 1773503)

Then there is the fact that if you plan on doing more than 150 miles in one run you have to have 4 hour toilet brakes. Grrrrrrrrrrrrr.

Only 2 hours :lol: Sounds like a nice lunch stop actually. Ok so it's not perfect, but certainly provides a remarkable alternative to what is available today

Re: New electric bike - 100lb/ft @ 0rpm!!!

A typical coal power station gives only around 35% efficiency unless it runs as combined heat and power (CHP) when it can get up to more like 75%, but I don't think there are many large scale CHP set-ups in the UK.

Quoting torques like that is meaningless, it all depends on the gearing involved.

Re: New electric bike - 100lb/ft @ 0rpm!!!

Quote:

Originally Posted by embee (Post 1773635)

Dont forget that the typical coal power station also chucks out more radiation than your average Nuclear station (and no Chernobyl was not an average :p)

Modern Fission reactors are safe and clean, when it comes Fusion will be even better......

Re: New electric bike - 100lb/ft @ 0rpm!!!

Quote:

Originally Posted by thor (Post 1773366)

So!!!??!?!?

I will accelerate like a *******! Imagine getting double the torque of the SV, everywhere in the rev range, all the time.

Imagine all you want, but that is not how an electric motor delivers power.

Re: New electric bike - 100lb/ft @ 0rpm!!!

Quote:

Originally Posted by SoulKiss (Post 1773645)

Modern Fission reactors are safe and clean, when it comes Fusion will be even better......

When/if fusion happens, it will cure alot of problems..

But what do you propose we do with the nucleur waste from nucleur fission?
Pack it in a concrete covered box? Dump it in some 3rd world country for a price, down big holes in the ocean?

Thats the sole problem with nucleur fission, the waste, and their extremely long half lives..

Re: New electric bike - 100lb/ft @ 0rpm!!!

Quote:

Originally Posted by saoralba (Post 1774022)

process and re-use it, modern reactors can re-use nearly all this "waste" - what can't be recycled can be molten and trapped in silicate, and the amount of true nuclear waste from the process of providing the energy you will consume in your entire lifetime could be contained within a glass bead you could hold in your hand