Follow Slashdot stories on Twitter


Forgot your password?

Comment Re:And? (Score 1) 829

I'd say you're partially incorrect. Commercial vehicles fall under different DOT regulations then cars. DPS isn't going to pull over your car and pull out weights and measures.

Well, maybe DPS won't, but CHP will. CHP regularly looks for stuff like farm diesel or illegal nitrous kits. Further, light trucks aren't commercial vehicles, I'm talking about automobile-class pickup trucks. You're thinking of heavy trucks, which use heavy-duty engines and brakes. These systems don't lend themselves well to the same kind of control that the cute little engines in autos do. But in the grey area there are light pickups, which often have car engines in them and which most certainly can have ABS, TC, YC, etc. But they aren't required to, because lobbying.

Comment Re:bad for fuel echonomy (Score 1) 112

the better the transmission the better you can stay in the power band,

Well no, the more gears the transmission has, the better you can stay in the power band. And automatics usually have more speeds.

The automatic is simply more complex...

Not true for automatics with torque converters

Wait, what? Now you're confusing yourself.

you cant use the clutch with the cruise control on, having the cruise, or driver floor it to get back up to speed doesn't waste fuel.

It doesn't waste fuel if you do it in an automatic, either. The TC stays locked in the majority of conditions. You are 100% wrong about it staying locked under full power, which it in fact does in pretty much every case. It's not about that at all, it's about accelerator position vs. demand. The TC on my 1992 Ford F250 7.3 with E40D stays locked up hard as I go up a hill with a load of wet firewood. The TC on my 1982 300SD stays locked as I go around a corner with the hammer down completely. And these are fucking antiques by modern standards; in the USA, the Mercedes literally is.

Bringing more complexity into the question about something that doesn't exist in production cars reinforces why I say manual trans, it may not be the best, but it is simple math.

The math isn't even as simple as you make it out to be. And the fact is that in some cars, the auto gets better mileage than the manual, because it permits staying in the power band more often.

Comment Re:bad for fuel echonomy (Score 1) 112

#1 at anywhere near full throttle lockups drop out, most don't have the capability to handle full torque without risk of damage to the transmission.

So what? Many people never do that. Also, people often abuse their clutch when applying a lot of power.

#2 the biggest losses are from spinning and pumping the fluid around,

Small cars have CVTs now, completely different in design and also enabling the engine to remain in its power band more often. Traditional automatics typically have more speeds than manual gearboxes now, except for the heavy, complex, and expensive DSGs, which likewise permits greater efficiency.

we want to be in the most efficient operation for the engine while accelerating (full torque output), while cruising we want the lowest fuel burn.

Actually, peak efficiency is usually attained at about 80% of peak torque output.

That was truly the only reason I brought up the manual, It's losses are truly linear with torque all are equal.

Not at all. In fact, the losses increase more than linearly in both cases. The automatic is simply more complex. You have to take the lubricant into account in both cases. But there's also clutching to consider.

As well, in the near future KERS is going to become more common, with the TC replaced entirely with an electric motor which also replaces the alternator and the starter. It's getting cheaper and it's been proven out on all sizes of vehicle. The motor can also have magnetic lockup, which takes surprisingly little power to maintain but which won't wear out like a clutch.

Comment Re:So Overstock's CEO is a frothing libertarian (Score 1) 202

Confidence in the USD is falling. The only truly substantive difference between USD and Bitcoin for the user is the confidence level.

Not accountability?


I'd prefer the currency that is vastly less useful for tax evasion and money laundering,

Completely common in USD.

Not even the deflationary nature of Bitcoin that libertarians fawn over?

That encourages spending, which is a good thing.

Comment Re:What's the alternative? (Score 1) 829

Then what's the alternative to setting oneself up for failure? I was under the impression that multi-thousand-dollar printers, multi-thousand-dollar CNC machines, and the like typically weren't sold with OS X compatibility or compatibility with forthcoming versions of Windows as a bullet point.

Those systems tend to include a Windows machine. If the vendor doesn't promise updates, you have to treat it as a black box and prepare to exclude it from your network in the future, with an air gap. Sad, but predictable. You can compare to earlier CNC machines which ran DOS. Those didn't try to do as much, though, so the OS wasn't as much of a problem.

Comment Re:Digg reader updates due to device crashes (Score 1) 141

It might be possible to get counts from Google, crittercism, or from ACRA. Go ahead and try if you want,

"...because I certainly haven't. I'd prefer to spread FUD."

Meanwhile, there was a Facebook update on play this morning that crashed my phone.

Right, we've established that anecdotes are not data and that iOS devices also crash, so meanwhile you're still sharing useless anecdotes. Actually, it's not useless: When the Facebook app shit all over people's contacts, both stealing contacts and overwriting them, I said anyone would have to be a complete fucking idiot to actually run a facebook app on their device. Thanks for the heads-up.

Comment Re:bad for fuel echonomy (Score 1) 112

>bad for fuel economy to let the cruise control slam on the gas to keep the speed up

that is/was true for cars with carburetors, fuel injected gasoline engines are going to be most efficient with least intake restriction at near peak torque engine speeds.

Yes, but we're talking about acceleration, not cruising.

Automatic transmissions will get less efficient the higher the engine speed, and higher the torque,

Just like manual transmissions.

if you were to go from 10% throttle to 80% throttle for 10 seconds to maintain your speed up the hill, then back to 10% versus going to 20% throttle for 30 seconds It will likely save total fuel to gas it for the shorter duration

There's no way to know unless we know the vehicle.

(definitely true in a manual transmission car.)

Stop pretending like lockup torque converters don't exist. They do.

Comment Re:While they're at it: Integrate with tow/haul mo (Score 1) 112

On my recent model F150 there's a very handy feature: "Tow/Haul" mode.

Welcome to the 1990s, when that started to show up on vehicles. Our 2000 Astro LS has the same feature. It changes the shift points, that's about it.

Result: On mountain roads you're constantly disengaging and re-engaging the speed control.

Sigh. It says right in the owner's manual that the cruise control isn't for that.

Comment Re:For VPNs, or for routing? (Score 1) 213

It's pretty unlikely that anyone will come up with a useful attack on a device that's just doing port blocking, NAT, and basic routing.

Nonsense! Also, even many cheap routers do packet inspection and sometimes even packet mangling now. Virtually all of them have some means to get a prompt. Many of them are running Linux and you can load binaries into their memory via tftp and host attacks from them directly. Further, there have already been many useful attacks on these consumer-level firewall products; some of them have been as pathetic as exploiting default passwords on maintenance interfaces left open to the internet by default, others not.

Now if you're passing unencrypted data across that router, you might have a problem

It can be used to capture traffic from the local network, too, if you're crafty.

Comment Re:So Overstock's CEO is a frothing libertarian (Score 1) 202

You're funny, but you make no points of substance.

Confidence in the USD is falling. The only truly substantive difference between USD and Bitcoin for the user is the confidence level. And confidence in the USD is falling in part because of deliberate manipulation of the currency by The Fed. It's quite rational to believe that supporting alternate currencies is itself a rational act.

You may have heard before that the government which can do anything for you can do anything to you. It's still true. The government which controls the currency wields extraordinary power. If you believed that they would wield this power for good, then you would have a point — but you'd be provably delusional.

Slashdot Top Deals

People are always available for work in the past tense.