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Old 8 Feb 2018, 10:56 (Ref:3799527)   #361
Feliks
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Feliks should be qualifying in the top 10 on the grid
What if you made Teflon so much ?
And maybe in diesel it would be enough to lubricate them with fuel ?

And the rolling bearings on the crank with the grease in the middle ?

This ... the engine could have been WITHOUT lubricating oil.

Just what would Castrol say ?

moking: moking:

Or maybe a carbon fiber line ?
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Old 8 Feb 2018, 10:56 (Ref:3799528)   #362
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we lost forge Nm


Okay, yes, do we continue to develop ideas ...
here one of the advantages: the possibility of completely separating the piston chamber, from the crankshaft chamber and main connecting rod .. This causes that the oil used for lubricating the shaft will not be contaminated with combustion products. He is in a clean state ... As someone will want to lubricate the piston with oil, it can use a different oil for this purpose.
However, I think that Teflon will fulfill its role ......



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Old 12 Feb 2018, 11:24 (Ref:3800691)   #363
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Here all the forces in the crank mechanism ... Reduction in the stroke of the shaft twice reducing, with the same stroke of the piston causes a large increase in efficiency, by reducing the forces of inertia. Also the force Nm sometimes reaches up to 30% of gas force , which can be seen in the charts.

http://www.new4stroke.com/sily%20w%20cylindrze.pdf

When it does not exist at all, the average efficiency of these 10 to 15% of the engine will be higher. only because of its lack ..

Adding a fall in the shaft stroke by 50% from the inertia forces, even the next 10% increase in efficiency will be able to achieve ... in total, some 25% efficiency will be better ...


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Old 15 Feb 2018, 20:44 (Ref:3801687)   #364
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Here is a textbook of a young handyman..

http://www.cimac.com/cms/upload/hist...oklet_2013.pdf

Or so very quiet?

https://www.youtube.com/watch?v=ZYI5ORbX8g8

Or some game ...

https://www.youtube.com/watch?v=heMCodsfl9w

Or maybe such a rope made of such a chain or a timing belts ?
Half milion ibs ...

https://www.usarollerchain.com/240-4...240-4-10ft.htm

https://www.youtube.com/watch?v=myXCwpYyywg

Andrew
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Old 26 Mar 2018, 23:38 (Ref:3811111)   #365
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Nice video, and at the end you can see how fast it can turn,

https://www.youtube.com/watch?v=pSXg...ature=youtu.be


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Old 10 Apr 2018, 00:35 (Ref:3814553)   #366
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So I continued to divide the hair into four...

Yes, we slowly develop this way of bypassing the lateral force of the piston .. here, that's all you have to do is one lever that has a half-ring at the end, but the other way round. This way one pulls up and the other down during the movement of the lever ... It can be used for a full four-stroke engine .. Well, see how easy we can cool the water piston ..




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Old 11 Apr 2018, 02:57 (Ref:3814786)   #367
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Does not this remind you of the mechanics drawn by James Watt ? But it's necessary to back 250 years back ..


Hand-drawn diagram by James Watt explaining his discovery of the "parallel motion" in a letter to his Sohn: "The idea originated in this manner. On finding double chains, or racks and sectors, very inconvenient for communicating the motion of the piston-rod to the angulat motion of the working-beam, I set to work to try if I could not contrieve some means of performing the same form motions turning upon centres, and after some time it occured to me that AB, CD, being two equal radii revolving on the centres B and C, and connected together by a rod AD, in moving through arches of certain length, the variations from straight line would be nearly equal and opposite, and that the point E would describe a line nearly straight, and that if for convenice the radius CD was only half of AB, by moving the point E nearer to D, the same would take place; and from this the construction, afterwards called the parallel motion was derived."

Of course, instead of a rope, you can use any type of parallel movement mechanism.

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

And of course, it's getting higher and higher speed after that ...

So this Wats is not bad anymore .. but this string can have such a form of springs from the watch's bannister .. and then it is the simplest solution and guaranteeing higher revolutions .. obviously the ideal is Peaucellier-Lipkin, but also is the most complicated .. But after some analysis, to which the arms attach to the connecting rod, i.e. which carries the main forces, the rest may not have to be a monstrous size ..
In any case, the use of a traditional crosshead certainly became archaism ... because with the use of any of these solutions, the side force on the crowd does not occur, and was not moved below, to crosshedas, and was liquidated at all ..

Also from my drawing you can see that a very easy way we can do cooling with the water of the piston ..
This can give us, due to its very low temperature, a change to Teflon efflorescence and one would be tempted to completely give up the oil.
And this is a very important matter, which allows us this construction, so it seems to me that maybe you can do practically this matter and try some teflon bearings and seals

https://en.wikipedia.org/wiki/Peauce...Lipkin_linkage



Here is the animation of THE PEAUCELLIER-LIPKIN LINKAGE which is automatically downloaded

http://kmoddl.library.cornell.edu/tutorials/05/

Normal position engine crosshead Peaucellier-Lipkin

https://www.youtube.com/watch?v=h9XuxrhPVK0

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Old 12 Apr 2018, 16:40 (Ref:3815051)   #368
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Historical notes
Sylvester (Collected Works, Vol. 3, Paper 2) writes that when he showed a model to Kelvin, he “nursed it as if it had been his own child, and when a motion was made to relieve him of it, replied ‘No! I have not had nearly enough of it—it is the most beautiful thing I have ever seen in my life.’”








Which of these three mechanisms to use ... and here the magnitude of the lateral force on the piston in the C-spot ... as you can see on 1/3 of the torque it achieves .. THEREFULLY IT WILL NOT BE HERE ... :clap:

http://mechanicalexpressions.com/exp...er-torque.html



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Old 13 Apr 2018, 10:37 (Ref:3815179)   #369
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Here are a few more alternatives..



And nowadays, how to design an engine that will save 10% of fuel in the ship's engine, because there is no friction in its traditional crosschead, then here you can see and count how much it can be ...

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









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Old 14 Apr 2018, 23:40 (Ref:3815564)   #370
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Here are a few more alternatives..


Such animation, so that we know what we are talking about ..



Well, here's the crosshead but it's applied to my new 4 stroke ... we gain a lot ... for my experience with this engine, we now get 1 liter capacity of the main piston, about 300 hp at 5000 rpm.
Of course without NOx, because the pistons will be cooled with water ..
Well, that's what to fight for ...




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Old 18 Apr 2018, 03:27 (Ref:3816287)   #371
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It's best to see in such a drawing .. so dead force can only give one's place on the casing in one place ... only pivot is in the place, which gives very little resistance to movement on a flat plane .. an element loaded with this force ..




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Old 20 Apr 2018, 09:52 (Ref:3816629)   #372
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Always every two connecting rods and two cranks on the crankshaft in a 4 cylinder engine are always less ..



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Old 22 Apr 2018, 01:04 (Ref:3816853)   #373
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Had the twilight of long crankshafts ready to be ready ... ?




The connector between the arms as they will have the diameter of the main bearings of the main crankshaft, this should be enough....


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Old 22 Apr 2018, 01:05 (Ref:3816855)   #374
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Peaucellier Due crosshead ..




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Old 29 Apr 2018, 17:27 (Ref:3818185)   #375
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"Metallica" played in Krakow on his concert cover "Dżem" with whom I worked as a sound designer in 1984-1987. Here also "Dżem" from my work time


https://www.youtube.com/watch?v=XbqP...ature=youtu.be


https://www.dailymotion.com/video/xrffaj


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