Hi there! Welcome to my most complex model so far!

Do you hate models that are a nightmare to print? Because I do!
Easily printable models is an attribute that I want my name to stand for! I designed this engine model from scratch and kept 3d-printing in mind during every design step. Therefor everything prints very easily, no need to generate supports. The parts that need supports have them integrated directly in the models. With the hand-crank the engine spins very easily and I could sit there and watch the parts moving for ages! I am really happy with the result, and I am sure you will appreciate my work! After all, designing this took waayyy too long, but the outcome is incredibly satisfying!

You are planning to make one? Awesome! Dont forget to share it with us!

Highlights:

• mechanically working model
• designed from scratch with 3d-printing in mind
• all parts printable without figuring out supports
• easy assembly and disassembly, no glue or (purchased-)screws
• great to show how an engine cycle works
• turbo can spin (with enough airflow, not through normal operation)
• all parts oriented correctly out of the box
• insert electric motor in Worm Gearbox to power the engine without handcrank
• huge explosion diagram
• step-by-step assembly instructions

Aww man, I dont have flexible filament!
Sorry, it will not work without the belt… You can see it asa n opportunity to try out flexible filament. I got one with hardness 85A, which is relatively soft, from a brand called "Pxmalion". Cheap and worked perfectly for me.

I dont have that particular electric motor...
It should be a standard size, but I simply had it laying around. The drawing should help you to find the right one.

Do not underestimate this model, be warned:
The amount of parts is very high, and all of them must be cleaned properly, or the engine probably wont run smoothly. The parts-list on the explosion diagram counts 61 unique parts, out of which several have to be printed twice, 10-times or even more. This is not your quick one-day project. Likely not even one-week. Of course I would love if you give it a shot! I only wanted to remind you, that it will need some dedication :)

This is my second engine, I made a 4-cylinder some years ago…
… and I learned from all the mistakes. The V10 is almost free of press-fit elements, as the plastic tends to relax over time and then the fit gets loose. Instead, I put in extra thought for snap-in-place spring designs, splints and so on.

But DeSteiner, this and that is unrealistic!
I narrowed it down to the essential things, to not overcomplicate everything. On top of that, designs intended for 3d-printing are more important to me than designs that fully resemble their real-world counterparts. In the industry, this is called “design to manufacture”, where you optimize the design based on the production processes that are later used. Also I am not a mechanic or work in the automotive industry. I am simply an engineer with a heart for mechanically moving objects.

Just the explosion diagram and detailed assembly instruction took over a week to make. I hope you appreciate my efforts ;)

Happy Printing!
~DeSteiner

Filament material:
PLA, ABS (or PETG), Flex

Notes:
brim on most parts for additional safety

Post-Printing:
remove burr on all bottom surfaces with a cutter knife! Some parts may not fit otherwise.