It involves taking something out and putting a new something in - i did mean to read how to do it (considering it's 50cc it will stil being limited to 29 MPH and i'll be looking at 50 MPH).
Of course, i'm gonna buy neons and some carbon fibre, maybe even a type-r sticker for some more power! :P
The mining and refinement process for the metals used in high tech batteries is just as bad or WORSE for the environment then running a car on gas, so biodiesel is imho the best for us and the environment.
ffs theres 65 references on that page and every single graph has tons of text under it where the data came from
last chance for you stop the childishness or im done here this isnt the first time youve displayed this or similar behaviour round here
If you're going to have a geek moment, you should at least get things right Nuclear reactions cause the conversion of mass into energy.
Fission FTW!
On the subject of future energy sources, we'll be on fossil fuels for quite some time yet. The standard joke in the industry is that we've had 50 years' oil reserves for the last 50 years! Biodiesel/bioethanol isn't quite the 'fix all' that some people believe it to be, partially because of reasons stated in this thread, but there are also some knock-on effects of using biofuels (particularly regarding engine emissions, which is my field) which mean that there are quite a few problems to be solved before we all start driving about in bio-fuelled cars.
Long-term, electric drive will probably be the way forward. Build enough nuclear power plants and you don't even have to produce CO2 to charge the batteries
Yeah, OK, but the original post was 'matter cannot be created or destroyed". I was just pointing out that matter can be destroyed (in the sense that the matter no longer exists as part of an atom, but has been radiated away) during a nuclear reaction.
Indeed, the great lipo scare. I've read time and time again on the RC forums from someone who mildly crashed their RC plane, yet had to dispose of an expensive lipo battery because it swelled from that very mild crash. Once it swells, it's done. An attempt at charging or using will result in a lipo fire. So, I ask again, what happens when the lipo powered car is in an accident if a mild crash of an RC airplane can render a small lipo not only useless, but an extreme fire hazard if it is used? I don't think I want to be sitting near a bank of xxx amp 12 volt or whatever it would take to power a car, lipos.
Yes, they were extremely dramatic, because the majority of them were demonstrating what could happen with overcharging a lipo. As for containing them, your video shows an excellent way to contain a hobby sized lipo for charging. But it is going to take a significantly larger bank of batteries to run a car than that 1200 mah 2S in that video.
Ah, ok, but you did say "lipo" which is lithium polymer, not lithium titanate I didn't read that link yet. But if it's a makeup that would give the same or better performance than lithium polymer without the charging and damage risk, that will be fantastic for the RC hobby.
Oh, and it's really funny folks suggesting the 50cc bikes for transportation. I drive 20+ miles to work. I really don't think I want to be on a 50cc anything with what I see driving to and from work. Heck, 250 cc is, IMO, dangerous to be out on the road with others around. And I'm with XC and the cold as well. I really don't want to be out for an hour riding to work on my little 20+ mph 50 cc scooter when it's -10 or -15 degrees Fahrenheit out with 20 mph winds (the cold gets exponentially colder with wind).
Where did you get those figures? Last time I calculated the energy needed to convert water to hydrogen and oxygen it was higher than the amount you get when you burn the hydrogen. So where do you get that energy?
Same goes for smog.
Yes and no. Huge power plants have greater efficiency but small electric motors don't. Besides electric cars, atleast ones that have a decent operational radius, have to lug along a load of batteries = extra weight.
What about cold climates? Everybody knows how batteries can die when it's cold. Try putting a few new batteries in the fridge and then put them in your torch. Twinkle twinkle little star...
LiPo batteries have a higher energy density than most others but are very fragile. And you don't need to especially try to blow them. A mate of mine almost blew his and he used a LiPo charger with the correct program. The problem must have been that he had rolled his RC-car the other day and the Battery had sustained internal damage. Absolutely no visible damage on the pack until it started to swell.
so youll have to use a whole bunch of containments
the point was its possible with relative ease
they claim ~4kwh/kg 100c discharge and 50c charge
lumpy dont make a car safe
personally ill always take active safety over passive
tbh they were pulled from somewhere
but youre indeed right the efficiency is somewhere in the 70% range
but as far as engergy goes ... were all sitting on a friggin huge fission reactor ... i still dont get why we dont use its energy more
but not for co2
a smallish rc motor with brushes has an efficiency in the 70% range ... take away the brushes and youre up to 90+ use a bigger one which naturally is usually more efficient and youre way way beyond anything an internal combustion engine could ever dream of achieving
with a combustion engine you need to lug around
fuel
gearbox
massive engine (especially with the ever so popular diesels)
take all that in account and i doubt an electric car with a similar range will come with any significant weight difference
well yes below -40 youll get qiute a few issues with modern batteries ... but its not like you dont with petrol engines
Nuclear reactions cause the conversion of mass into energy.