large 4 cylinder crosshead Lego marine engine with camshaft

This is my second attempt to build a "2 stroke" crosshead engine of lego and it went quite well i must say. It became quite big and i ran out of red and yellow bricks. I also made it with propeller, exhaust and turbo

Comments

1. I'm a Marine Engineer studying for my 2nds EKs, this has cheered me up to no end, still looking for real cross head vids though. Haha! :D
2. Thanks for the positive feedback. Eventually i ran out of bricks to build it excatly how i wanted to, and this is how it end up. For those of you, who are confused because its not how your car engine looks like, i can tell you its a replica of a LARGE corsshead marine 2-stroke engine. It does not have charge air but scavenging air, hence the valve confusing. One pushrod for exhaust and one for the fuelpump. The propeller at the back is for propulsion Try google, for instance, S35ME-B or S50MC
3. @zakkdodge: I know that, coz I work on them...on ship thats all. Just helping to inform the masses coz before I studied for this career I too used to get confused since small scale automotive-style 2 strokes are all I'd come into contact with up until that point. As someone with an interest in these things amongst others, I think its a brilliant rendition of a fairly unknown yet common engine, props to bomel12345! =)
4. @talljono22 and @zakkdodge etc....guys, you are talking about automotive small-scale 2 stroke engines....this is a MARINE 2 stroke engine: the ones that power ships...pistons and cylinders big enough to stand in...google "Sulzer-C RTA96" and you'll see.
5. how u make this! i mean how u make the piston air tight ect
6. @booyea101 It has two strokes, power stroke, compression stroke. It DOES NOT HAVE an intake stroke or an exhaust stroke. How hard is it to get that into your head? It's not a lawn mower engine. Guess what, some two strokes are actually different from what you're used to. If this is too complicated for you look up Detroit Diesel or EMD, more two-stroke diesels for you that are nothing like your lawnmower and moped engines.
7. @joffeloff Ok then mr.smartass you obviously dont know anything about 2-strokes.
8. @booyea101 its a 2, 1 to let the compressed air out, and another to let compressed air in at tdc. every rotation has a power stroke in every cylinder, so its a 2 stroke
9. @bomel12345 Then its a 4-stroke...
10. No 2-strokes have cams!
11. @joffeloff why would I do that when I can annoy you with no research at all? :) haha
12. @booyea101 Look up marine two-stroke crosshead diesels before spouting nonsense.
13. @AlchemistHawk Look up marine two-stroke crosshead diesels before spouting nonsense.
14. some 2 stroke engine still posses cam shaft and exhaust valve at the top end, mostly found on uniflow design where petrol/air mixture not including oil(spark ignition) or high pressure air(compression ignition) enter the combustion chamber since they are lubricated in the same way as 4 stroke, scavenging is done by the blower or turbo instead of crank case
15. lol, valves
16. @bomel12345 thats impossible in real life unless you engineered some type of new camshaft and lifter design. How would the valves not float in that 15 degree time of compression to have both valves closed?
17. Great work there. Sound pretty good too
18. this is how you can tell if its a 4 stroke,if it has a cam or any valves then its a 4 stroke suck,squeeze,bang,pooey thats 4 strokes and a 2 stroke has ports in the cylinder
19. thats a 4-stroke... not a 2 stroke.
20. exhaust and injection