Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror

Comment Re:Huh? (Score 1) 58

3D printed objects aren't the strongest due to the way the layers are laminated together. I imagine the last place you'd want a weak join is on a 150+ foot long blade swishing through the air.

You betcha.

Especially since a spinning blade gets more efficient as it gets faster. Higher speed = lower torque for a given horsepower density, so a higher tip speed ratio (TSR) wastes less energy "twisting" the air downwind.

Efficient wind turbines run at a TSR of 6 or higher - which means that in windy conditions the tips are running at an appreciable fraction of the speed of sound.

If one of those puppies breaks off it's NOT the kind of baseball bat or boomerang you want coming toward you, whether flying or summersaulting along the ground. (Imagine a caber toss with giants and redwood logs.) Not to mention what the resulting unbalanced spinning does to the other blades and the pylon.

Comment Re:User error (Score 1) 293

Well, I'm also 6'7" and I certainly don't fit into the old beetle. I am still working to transition from my old W126 300SD to a D2 A8. Gets about the same mileage on the freeway, and I don't drive around town much. You might consider looking at Subarus though, I used to have a GC5 Impreza and I fit very well into that. Before that I had a S13 240SX Fastback, which had massive legroom but which was a little short on headroom.

Comment Re:Jeep? Not so much (Score 1) 293

There wasn't anything special about those older Jeeps that you mention. Yeah, they looked more rugged, but that was about it.

There was something special about older Jeeps. They were cheap to modify, and they had more flex. Leaf springs are heavy and have inferior ride, but they offer more suspension travel and they mounted them under the axles... so you could cheaply use a shackle flip kit to do a suspension lift. On the other hand, they typically didn't come with locking diffs. The modern vehicles use EBD to maintain traction while crawling at low speeds, which means they can actually traverse things that the older stock vehicles can't. On the gripping hand, who goes off-road with an old Jeep without getting at least one locker?

The problem now is just finding donors for modification, though. At this point it might actually be cheaper to buy a tube frame. There are a few tube buggy frames under 5k...

Comment Re:Jeep? Not so much (Score 1) 293

As a result, you can't get anything to play off-road in unless you spend an additional bucket of cash in the aftermarket. Shame, but that is how the market works.

Luckily there are absolute shitloads of trucks just lying around waiting to be hopped up, and available for little to no money. You can get OBS F-Body trucks literally all day... out here in California they're even close enough to "no rust" as makes no difference. How many do you want? You're going to rip out the powertrain anyway, right?

Comment Re:User error (Score 1) 293

Bullshit. The automatic can't read your mind, hence it's always trying to catch up with what you want. They are good for straight lines.

Bullshit. The automatics all support a manual mode now, whether it's implemented in your car or not. A very fast human driver can shift in maybe 250ms, average is maybe 500ms and in most vehicles closer to 1s. A mediocre automatic transmission shifts in 400ms (the good ones from the nineties will manage this) while a very good one will do it in 200ms. But about since the same time they went to five-speed, they also became dynamically controlled. While typically retaining a classic limp mode, such transmissions also dual-engage gears while shifting, making most shifts basically imperceptible. A driver can make a tiptronic shift while under power in a corner without upsetting the balance of the vehicle, something you can't do even by heel-toe shifting.

A good automatic transmission is better than even an expert human with any manual short of a dogbox. Even a SMG is faster than a dogbox. A DCT is an order of magnitude faster than a SMG. There is nothing faster than a DCT... which can be fully automated. The latest ones are even said to be fairly smooth when they do that.

Comment Re:User error (Score 1) 293

However, if you are doing highway driving, the manual wins, every time.

To some extent this ended with the ZF8 and it is well and truly over with the ZF9. They give the ZF9 four overdrives, the lowest one is 0.48:1. The automatic now kicks the manual's ass. It's also over with the new crop of CVTs; they don't manage the same kind of mileage as the ZF 9HP because they can't quite manage the same deep ratio, but they're still better than a normal automatic.

Comment Re:The downside (Score 1) 67

The downside here is that means you can't just get rid of CPU intensive ads by disabling Flash.

Like the HTML5 video tag, that was supposed to free us from evil Flash, but just brought forth the unblockable autoplaying autoloading multimegabyte video ad, this isn't as great a piece of news as it might seem...

Guess I got to stick with obsolete IE. With corporate IE I do not have to worry about HTML 5 support :-)

But seriously why can't an adblocker block it? They can do domain checks on hte video links for cross site or not execute them if they are run from a javascript. Yes this will block fine content working today but it can be done.

Slashdot Top Deals

The secret of success is sincerity. Once you can fake that, you've got it made. -- Jean Giraudoux

Working...