Gallery, Projects and General > Mod-Ups!
Pipe and Bolt Engine Mod-Up
vtsteam:
--- Quote from: shipto on February 15, 2015, 03:45:02 PM ---The disadvantages of this is that the pipe as well as the bottom of the piston all has to be pressurised before any force is applied to the bottom of the piston.
--- End quote ---
Thanks Dwayne. This is the part I was thinking about, The amount of time it takes to travel must be very short, though, relative to the speed of the engine.
The long tube allows the engine to run a lot better than I would have thought, just looking at it intuitively. What really surprised me was that you used the same valve body for exhaust, which meant the long tube had to serve double duty. And yet the engine still ran at respectable speed.
The clue to why it works so well, I think, is that the pressure pulses from the valve are traveling at the speed of sound down the tube and back.
If you have a foot of tube, and sound travels at about 1100 feet per second, it would mean that piston starts to feel pressure a little less than 1 milisecond after the valve starts to open. That's the interesting part.
mexican jon:
Well I have cast my vote :clap: But I'm not entirerly happy with it :scratch: In reality both engines deserve to win as the thought and construction process of both engines is unique in it's own rights :nrocks:
So even though I have voted for 1 engine I personally would like to congratulate RussellT & Shipto as I believe you are both Winners :mmr:
Stilldrillin:
--- Quote from: mexican jon on February 15, 2015, 05:06:28 PM ---Well I have cast my vote :clap: But I'm not entirerly happy with it :scratch: In reality both engines deserve to win as the thought and construction process of both engines is unique in it's own rights :nrocks:
So even though I have voted for 1 engine I personally would like to congratulate RussellT & Shipto as I believe you are both Winners :mmr:
--- End quote ---
My thoughts, exactly........
I almost, didn't vote. And, after 24hrs deliberation, my thoughts were no clearer. :scratch:
I believe, all three should receive equal awards....... :thumbup:
David D
mexican jon:
--- Quote from: Stilldrillin on February 15, 2015, 05:37:25 PM ---
--- Quote from: mexican jon on February 15, 2015, 05:06:28 PM ---Well I have cast my vote :clap: But I'm not entirerly happy with it :scratch: In reality both engines deserve to win as the thought and construction process of both engines is unique in it's own rights :nrocks:
So even though I have voted for 1 engine I personally would like to congratulate RussellT & Shipto as I believe you are both Winners :mmr:
--- End quote ---
My thoughts, exactly........
I almost, didn't vote. And, after 24hrs deliberation, my thoughts were no clearer. :scratch:
I believe, all three should receive equal awards....... :thumbup:
David D
--- End quote ---
:doh: Sorry I should have mentioned vtsteam as his engine deserves the same praise as the other 2 :thumbup:
SwarfnStuff:
As said by others, I wanna vote for both as both are unique takes on the broad brush stroke challenge. Interesting too, that after I submitted my vote I saw the progress score and with only 13 votes logged I shall wait patiently to see how the votes tally later. BIG congrats to both of you. :clap: :clap: :thumbup: :beer:
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