Does anyone know about any electric powered sevens, or any sites?
Like this?
http://www.electric7.com/
would you need to tax it if it was electric.
got me thinking now lol.
adam
I wouldn't tax it, mainly 'cos an electric powered 7 using currently available technology would have the sportiness of a milk float
BenB stop taxing your car then look here
0-30 mph: 1.35 sec
0-60 mph: 3.07 sec in 117 ft
0-100 mph: 6.87 sec
0-100-0 mph 11.2 sec
Lateral g: 1.3
Braking g: 1.2
Ok not a seven but and ariel atoms pretty close
MK apparently make one
A se7en without the proper soundtrack just wouldnt be right at all. I can just imagine the shame of driving an electric sportscar out of the pub carpark
quote:
Originally posted by Paul TigerB6
A se7en without the proper soundtrack just wouldnt be right at all. I can just imagine the shame of driving an electric sportscar out of the pub carpark
quote:
Originally posted by BenB
I wouldn't tax it, mainly 'cos an electric powered 7 using currently available technology would have the sportiness of a milk float
I know that electric motors have great torque and acceleration can be quite brisk...
but when I said currently available technology I meant stuff avaialble from scrappies 
This is LOCOSTbuilders after all!!
I know with fuel cells, modern electric motors etc a fast car is possible... but with the available technology (in scrappies) you're going to be
looking at a milk float or golf buggy motor with a whole load of deep-discharge batteries. Heavy stuff!!! And not so sporty- hence my original
(perhaps badly worded) comments.
I've seen the electric moped in the US, the Ariel atom electric clone etc- but they're all pretty cutting edge technology. Not so available
yet for the likes of you and me....
I think electric cars are definitely going to get VERY popular in the near future.
With torque curves like this (from Tesla) they have enormous potential .... and battery / motor design is evolving all the time.
Yeh- but how much is the Tesla Roadstar?
And the range.....
The motors aren't so much the problem. It's supplying the juice to run them..
Fuel cells are the way to go ? hydrogen based.
quote:
Originally posted by speedyxjs
Make a cd of a ceseven, and play it loud while you are driving
An electric moped
There was one reviewed in either Kitcar or Which kit a couple of years ago, privately built. It had reasonable 0-60 performance, about 5 or 6 secs
IIRC, think the range was about 60 - 70 miles. Certainly would blow a milkfloat away!
The main problem with electric cars are the batteries. These do not hold enough charge for long journeys so you would have to wait while they
recharged.
Also the myth about greener cars is exposed when you have to dispose of the batteries.
The so called green 'toyota prius' is a good example. According to Clarkson, if you include manufacturing and disposal CO2 levels across
it's life, it is more enviromentally friendly to drive a V8 4 X 4 !!!!
I work regularly on ups systems and batts are a p.i.t.a as we are always changing them out.
Electric cars are ok for short city journeys but that is about it.
Unless you want to have a fast drag car that you trailer about, what is the point?
Motor technology is moving forward slowly, batteries not much movement at all to be honest certainly nothing revolutionary (that will be required to
make practical electric cars a reality). Control electronics seems to be moving along at a fair clip though.
The whole 'it wouldn't be right not making noise' thing reminds me of the old guys who still think steam is better than electric for
trains.
The thought of a sportscar that screamed up to, overtook and carried on accelerating away from 911 class cars all in utter silence appeals to me on a
number of levels
there was a post about the tesla on here a few days ago which got my interest so followed it up,
and as stated locost its not,
motor 250hp 13,000 rpm, single fixed gearbox and controller $25,000,
Li Ion batteries need renewing after around 250 to 500 charges (100,000 miles aprox) $24,000,
but if the motors were produced in quantity will drop to somwhere reasonable,
and if whats on the horizon battery wise is correct, they are now working out how to mass produce carbon nano tube battries,
(allready invented and tested in the lab)
which can be printed on paper like a newspaper !!!
no issues with the problems that ordinary battries have no heat, totally inert, weigh a fraction of a li ion hold three times the charge,
unlimited charging and high discharge rates , and if your mains up to it recharge in less than ten minutes,
they are hoping to have them in production for mobile phones and other consumer products within two years,
as for the engine noise, thats probably what the guys driving steam traction engines said a hundred years ago when one of henry's model A's
passed them on the road
0-60mph in less than 4 secs
Range - 250 miles on a 3.5 hour charge
Running costs of 1p per mile (ok disregarding battery replacement but they will become MUCH cheaper)
Equivalent to 135mpg
I'd say that's quite a practical (and fun) means of transport. I would give it a try tomorrow if I had the cash. 
[Edited on 26-9-07 by RazMan]
The trouble is that "trying it" will burn a hole in your wallet.
I think that I will wait!
The motor technology is not a problem, i should imagine given enough interest any large electrical motor producer could make the same as the motor in
the tesla,
the firm that produce it have not invented anything new, it's just an induction motor and works like the one in your washing machine,
and the same goes for the controller,
any number of companies out there given the spec for the motor could produce a controller for it,
its only the limited production that makes it so expensive,
engine noise !!! at those revs it would sound like a jet ?
well okay a quiet jet !!!
Have a look at this:-
http://www.racecar-engineering.com/images/features/16_5_6/batterycharger.pdf
Electric, a seven and 4 wheel drive...
.... and 0-60mph in 2.2 secs! 
This looks like a whole heap of fun!
YouTube link
The guys developing the Tesla roadster are acutely aware of the importance of noise in the sportscar experience. The thing to remember is that, in
the nicest possible way, they are major geeks. They've actually got it so it does make a low-key but quite unique and bizarrely attractive
engine/motor noise inside the cabin. The closest thing i could compare it to is a Tie-fighter from Star Wars, which may well have been what they were
aiming for!
Personally i don't see it replacing the scream of a bike engine or the angry howl of a Ferrari V12 anytime soon, but eventually this kind of
thing will be what enthusiasts gather around to hear. And yes, a little bit of my soul died just as i wrote that.
you could always put a bit of cardboard in the spokes !!!!
quote:
Originally posted by gezer
.....produce carbon nano tube battries,
yes all thats needed is a strong enough rope,
to go from the ground to an object in orbit,
re battries, the nano tubes are sprayed on to the paper using a static charge (like powder coating)
and can be cut and stacked like a ream of paper that you buy for your printer,,
even moulded to shape to go inside the car door panels roof etc,
what they are looking at now is how to produce carbon nano tubes by the ton in chemical plants, rather than by the gram in a laboratory,