I'm not an expert in flows, but as i can see, the cylinders got different pressures (in 1 engine), cause of resistance on the T pieces, and the different (total) lenght of tubes. It's just a theoretical suggestion, don't know if it makes any different in practice, but i think it would be more efficient if the path of the air would divided by 2 at each junction like: 1 => 2 => 4 (and =>8).
If you have a precision pressure gauge you can check the actual pressures at the different cylinders.
@HUNLac5 I did some testing with equal length tubes, and there was no difference at all. Lego pneumatics aren't the most precise to begin with and at such pressures always leak a bit, so it all equals itself out.
@spamsac of course. But when running you can even hear/feel the 200 rpm difference. Not in power but pitch, that doesn't come over very good in the video.
I'm not an expert in flows, but as i can see, the cylinders got different pressures (in 1 engine), cause of resistance on the T pieces, and the different (total) lenght of tubes. It's just a theoretical suggestion, don't know if it makes any different in practice, but i think it would be more efficient if the path of the air would divided by 2 at each junction like: 1 => 2 => 4 (and =>8).
If you have a precision pressure gauge you can check the actual pressures at the different cylinders.
HUNLac5 6 months ago
@HUNLac5 so the first cylinders running on higher pressures then the ones "at the end".
Ok, there would be more tubes, but at least i'm sure the engines would run even smoother!
HUNLac5 6 months ago
@HUNLac5 I did some testing with equal length tubes, and there was no difference at all. Lego pneumatics aren't the most precise to begin with and at such pressures always leak a bit, so it all equals itself out.
nicjasno 6 months ago
Hey Alex, long time no speak :-)
I'm sure you will have, but have you tried swapping the speed-computers over?
Hope you're well,
Simon
spamsac 1 year ago
@spamsac of course. But when running you can even hear/feel the 200 rpm difference. Not in power but pitch, that doesn't come over very good in the video.
nicjasno 1 year ago
If you are selling them, sell them as two separate models. Standard and high performance... (take out twice the money for the high rpm ones)
Thats what Intel and AMD are doing with their processors... ;)
And with a little tweaking from the end user, you might get the same performance, from the cheep model, as the high performance ones..
ricande 1 year ago
@ricande I don't roll like that.
nicjasno 1 year ago
Looks like an engine you could use to replace a Dodge ram's engine with :)
stormtroopera52 1 year ago
can you make a video in which you explain how they work?
pyrosimple 1 year ago
i finally got mine to work but its a shame i dont have an air compressor :D
WpA09 1 year ago
7.5 bars (108 psi)
nicjasno 1 year ago
how much pressure are u using on full trottle (in the video)
endrachwer 1 year ago
Shit happens...
Zblj1987 1 year ago