Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror

Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

×

Comment: Re:Why does it need a 5 speed gearbox?? (Score 1) 158

by Viol8 (#49370729) Attached to: At the Track With Formula E, the First e-Racing Series

"google brushless motor efficiency, look at images if you don't fancy reading."

If you're going to try and be patronising it helps if you have a clue what your argument is and what the curves actually mean and how they relate to modern motor control systems using IGBTs.

"i said rarely. "

So what? Even it its only once it still needs a clutch unless you're suggesting they should push it from a standing start?

"once again, you don't need a clutch for an electric motor, whether it is mated to a gearbox or not"

Nice try. But don't try and flip the argument. You said F1 cars don't need a clutch so don't try and pretend you meant electric motors all along.

Comment: Re:Why does it need a 5 speed gearbox?? (Score 1) 158

by Viol8 (#49370373) Attached to: At the Track With Formula E, the First e-Racing Series

Oh FFS. Peak efficiency is for piston engines, not electric motors. Do you think theres a ratio swapping gearbox for every motor in a TGV?? Yet they still got one up to 320 mph.

"Considering f1 cars rarely stop, it's not a significant problem to forgo a clutch"

Umm, they stop for the pitstops and they have to move away at the start. Please suggest a way to do that without a clutch.

Comment: Re:Why does it need a 5 speed gearbox?? (Score 1, Informative) 158

by Viol8 (#49369971) Attached to: At the Track With Formula E, the First e-Racing Series

No idea why you got modded up for that comment. If you want to keep the motor rpm *up* then a gearbox is the last thing you want - just let the motor spin as fast as it can until back emf stops it or it flys apart. Gearboxes (on cars) are designed to keep the engine rpm *down*

Comment: Re:He's good. (Score 2, Insightful) 198

Not to mention that defrauding banksters isn't the crime it is made out to be

Actually, even if you've managed to delude yourself into thinking that it's OK to steal from people you don't like, defrauding bankers hurts us all here. Here's why: 1) It costs the bank's customers through higher credit interest and lower debit interested 2) If the bank fails customers are likely to lose out (although most individual customers will have their deposits guaranteed by the state) 3) The state guarantees deposits of individual customers (up to a certain limit) so, if the state has to bail out those customers, we all pay.

banks don't fail over $1.8m if they weren't going to fail already.

The banks can't just raise rates to make up for it, either, then customers will go elsewhere. If anything this just encourages banks to operate with more efficiency.

Old programmers never die, they just branch to a new address.

Working...