Deltic Engine - 36 Pistons, 18 Cylinders, 1650HP. Used in Ships and Locomotives.
About this creation
Not a true deltic due to the angle of the cylinder banks, limited by the functional angle of the connecting rods and the fact that it has 36 separate cylinders instead of the 18 that a 36 piston Deltic should have...but it's as close as I could get it in Lego without altering parts.
Next project is a transparent version....and maybe something to put it in.
Quoting Rik Whines
Excellent. How about putting it in FDNY Super Pumper??
That would be an interesting project, but not one for me - I'm more into the mechanical side, so everything has to function to the greatest extent possible and I don't think it's possible to build a centrifugal pump that would do the model justice. I think it'd need a detailed build and that technic wouldn't be the best lego for the rest of the truck.
Quoting Nick Barrett
Brilliant. Was it starting to smoke at the end of that film?
Haha, smoke is one thing I do not want to replicate with lego! I think whatever you saw was probably due to the low quality camera in low light with high compression of the video.
Next time it'll have an RPM counter and a flywheel to smooth out power delivery.
Quoting Angelo S.
Wow! this is amazing! Can you put some instructions or part list?
Thanks. I plan to make the smaller, 18 cylinder 'Baby Deltic' sometime with transparent cylinders. I'll try to photograph the part inventory and major sub assemblies as the only difference will be the number of cylinders inbetween the end structures.
Quoting G W
That's... that's actually rather impressive.
But where do you put the diesel fuel? ;)
Thanks. It is possible to hide a Medium Power Functions Motor inside of the engine to provide the power. It only just fits though, and without space for gearing up, was not going to run the engine fast enough for me.
Quoting Stephen Poulsen
Wow, Looks deceptively simple seeing it, but I guess it took forever to figure out the minute deatils.
You're quite right, the actual workings of the engine are quite simple, the tricky bit in Lego was getting the angles right, or rather realising that you can't build a true deltic and then having to make the angles shallower. And after that, getting the drive phased correctly to each crankshaft.