Tell us something we don’t know.

[Fuddyduddy1952]

View attachment 858162

And both have engineering flaws!

 

[MossRoad]

View attachment 858162

The Titanic engines provided about 5.6 times the thrust of the 777 engine.

Here's a really good explaination...

How does a single Boeing 777 engine deliver twice the horsepower of the Titanic?

Answer (1 of 15): Things are not as simple as they may seem cursorily. Lets dive in to get the actual facts! Maximum thrust (force) exerted by the most powerful version of a single Boeing 777 engine (GE90–115B) is 115,540 lbf i.e. 513.9 kN. The maximum power (P) of 3 Titanic Engines was 46,000 ...

www.quora.com

 

[ponytug]

The Titanic engines provided about 5.6 times the thrust of the 777 engine.

Here's a really good explanation...

How does a single Boeing 777 engine deliver twice the horsepower of the Titanic?

Answer (1 of 15): Things are not as simple as they may seem cursorily. Lets dive in to get the actual facts! Maximum thrust (force) exerted by the most powerful version of a single Boeing 777 engine (GE90–115B) is 115,540 lbf i.e. 513.9 kN. The maximum power (P) of 3 Titanic Engines was 46,000 ...

www.quora.com

That's one of the best, and most succinct, explanations that I have ever seen for HP, thrust, torque, and force!

Thanks for sharing it.

All the best,

Peter

 

[MossRoad]

That's one of the best, and most succinct, explanations that I have ever seen for HP, thrust, torque, and force!

Thanks for sharing it.

All the best,

Peter

Thanks! I found it 10 minutes ago.

 

[ponytug]

I'm saving it. I have tried more than a few times to help folks understand torque and HP, and I'm never doing all that well at it.

A lot of folks around me seem to have trouble wrapping their minds around understanding the torque on most EVs is 100% at a standstill, and with no gears, full torque is available at all speeds. All of which dramatically changes acceleration (torque), whereas HP just overcomes drag at speed. Ditto for using diesels instead of gasoline engines in manual transmissions, and that automatic transmissions help change the applied torque further complicating things.

Don't get me wrong, I think that the 787 and 777 engines are amazing, and huge!

All the best,

Peter

 

[MossRoad]

Like that article showed, a CatD8 only has about 350 horse power while an F1 race car has 1000 horse power. Which one pushes dirt better and which one goes 200mph+?

 

[ponytug]

Way back when, I used to use a photo of a Ferrari that someone attempted to drive off the beaten track,
well ok, off a smoothly paved road,
well ok, twist my arm, they actually went driving cross country, apparently at Ferrari speeds, and
well ok, perhaps they weren't experienced off road drivers.

Let's just say from the photo it was questionable whether there was any salvage value left of the vehicle. What remained was a crushed, dirt filled, piece of scrap. Any 4x4 would have been a better choice. I used to use it as an illustration for "horse for courses", and using the right tool for the job. Always got a laugh.

All the best,

Peter

 

[bcp]

Today I bought a new plug-in receptacle tester with GFCI test, which my old one didn't have.

Reading the instructions, i found that the tester has an altitude limit of a little over 6,500 feet.

???

Bruce

 

[MossRoad]

That's weird.

 

[SouthernSky]

At higher altitudes, the air density decreases, resulting in lower dielectric strength. This reduction in dielectric strength can lead to insulation breakdown in electrical equipment.