Got to hurt so good or something like that.

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Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K

Malhe Is making pistons for new concept motor. Inline four, 1 a 7.4 liter inline four making 684 hp. yes thats right. Other is diesel 3.4 liters making 280 hp, over 480 t.
How they do it? for one 4 cyl, engines gasoline will shake to death. Diesel is easy because of low rpm.
What they did with gas, is no valve train run off chain, or gears. computer controlled valves, no balance shafts, and trade secret connecting rods.
The 7.4 is a boat outboard motor so far. Cigar boats with 6 engines only need 3 of these.
I will try and find link. Oh yeah these motors are not forced induction

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

https://youtu.be/8alrpieveDg

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

Liked the w116 in the video...

... under cycled loading: stress on... stress off.

The lower the stress the more cycles aluminum can withstand before failure. But, aluminum will eventually fail under cycled loading. Steel, on the other hand, can last for ever under cycled loading if the stress is low (~ under half of the yield stress).

Remember that 737 in Hawaii that had the skin of the fuselage peel off in flight. That was an old plane that had a lot of flights, but not necessarily a lot of flight hours. Every time it took off and landed the cabin was pressurized and depressurized. That cycle-loaded the fuselage, and eventually the aluminum skin let go.

If you take your fourth sentence and change the word steel to aluminum the sentence is still true.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Uhh, no. Aluminum behaves differently than steel under cycled loading. Aluminum will eventually fail, even at very low stresses. The lower the stress, the more cycles it can handle, though

The stress limit at which steel will last an infinite number of cycles is called the "endurance limit." Aluminum does not have endurance limits... because it will always eventually fail under cycled loading.

Have you ever seen an old military aircraft on a pedestal? It wasn't put there as a perfectly good aircraft. It was put there because it was no longer flyable... because it's made out of aluminum.. and it was near it's life expectancy due to metal fatigue.

There's this thing now called the Interwebs... and on this thing called the Interwebs there's another thing called Wikipedia...

https://en.wikipedia.org/wiki/Fatigue_limit

Yeah, Aluminum is shyte, that is why MB uses it for all kind of important parts...also why all our planes are made from that shyte Aluminum.

I always felt these retired air force planes are on display because they are obsolete....you know like the B 52s which are still in the air after what, at least 50 years?

...yeah that Aluminum is shyte structurally, it always fails.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

You and everybody else saw the graph and the text on the Wiki page, and it was just like I said it was. Aluminum always has a finite life under cycled (fatigue) loading.

I was right and you were wrong.

That is funny.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

OK, just to be fair, I looked at the WIKI page. The last sentence in it is:

The concept of endurance limit was introduced in 1870 by August Wöhler.[15] However, recent research suggests that endurance limits do not exist for metallic materials, that if enough stress cycles are performed, even the smallest stress will eventually produce fatigue failure.[7][16]

This appears to apply to all metals, including steel and aluminum.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

When working on my well used 85 Renard back when I had it I found that whenever I took off parts they tended to come off in several pieces when I unbolted all the fasteners....whether steel or aluminum.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

The horizontal axis on that graph is logarithmic. It doesn't go 1, 2, 3, 4... it goes 10, 100, 1000, 100000,...

Yeah, if you look real close at the steel line (the blue one) on the graph eventually becomes a straight line, but not perfectly horizontal, meaning that at a bazillion-bazillion-bazillian cycles even low stressed steel would break.

Up through the 1960's and maybe 1970's, cylinder heads on BMW six-cylinder engines would eventually crack due to fatigue from thermal stress, even if they never overheated. The joke was when shopping for a used six-cylinder BMW, if they didn't have a receipt for a new head, deduct the cost of one from the price.

When they rebuild piston aircraft engines, they don't rework the cylinder heads. They just throw them in the recycling bin and install new ones.

A lot of chapters in engineering text books end with a paragraph saying the information in the chapter is mostly, practically, but not entirely true.