The Zenith - Piston Powered
by Kein Anderer
FULLY VANILLA - Top Speed: 310km/h Peak, ~300km/h Average Combined Peak Torque: ~13000Nm (Wheels), ~30000Nm (Engines) Combined Peak Power: ~2400hp (Wheels), ~5200hp (Engines) Overview: Bringing to you my first proper attempt at a pressure engine powered vehicle called "The Zenith", a higher power AWD luxury car that slots into a similiar position as the Nova. A lot of the newest tech we discovered on SMTC (discord server, linked below) and by me has been implemented into it, including pressure engines as a whole, my modern day design oriented on kein engine or scotch yoke geometry that is much more power, size and complexity efficient, wonky bearing clutches, "cv" joints and transmissions, that allow for a lower complexity and more compact design. Prepare for the most chonky description you have seen me write to explain all of the tech back to back lol. Controls: W/S - Forward/Reverse 1 - Parking Brake [Manual Toggle 2 - Top Speed Mode 3 - Offroad Mode 4 - Lights [Hold for high beams 5 - Hazard Lights 6 - Radio 7 - Horn Parking Brake: It will normally be managed fully automatically by the vehicle, disengaging as you press W or S and engaging as you leave the seat. It can also be manually controlled with a button and the interior & exterior light red lights indicate if its on or off. This can be useful for parking on a hill while in the seat for example. DISCLAIMER: This car uses logic gates attached to the seat to detect you and for some stupid reason SM removes those, if you reload the world with the vehicle in it. This is why you get the manual button and the indicators in the first place. Top Speed Mode: There is a way to effectively add extra traction by having very specific suspension geometry and stiffness, but for normal terrain worlds it is too soft and will compromise drivability and handling quite hard. This adds it as a dedicated mode for when the terrain is smooth enough. Offroad Mode: This mode raises the cars ride height by 1 block and locks torque vectoring to never cut power at any of the wheels. Useful to get over difficult terrain bits or unstuck. What Are Pressure Engines?: The primary new pieces of tech compared to any build I have done in the past are the pressure engines, which I have never attempted before and very much falls out of line for me always making kein engine builds. Just to give you a basic overview incase you don't know these, they are like the piston engines you're familiar with but instead of using the pistons internal power, they use its compression. This gives very significant power benefits (going well into the 1000s for hp/piston) which is easily over 30-100 times higher than what your conventional engines or kein engines can do. Due to not needing timing, nor being speed capped in any other way they will synchronize to the tickrate with most examples (including the ones on this build) running at ~1255rpm, which is very much sufficient for most application and allows for high speed vehicles with that high power at the top end, which is basically unheard of with any timed engine design. They do come with a relatively large weight penalty and require blueprint edited controllers to speed up the pistons (still spawnable in vanilla btw), but are still very much worth it overall. Here is a video to explain pressure engines in further detail if you're interested: https://youtu.be/YULRhRh3ehw?si=PYkpQuvkrQOXts5t My New Engines: These are no regular pressure engines, as I tried my hands on a completely reimagined concept that incoroporates the benefits of kein engines with their geometry by using wonky piston sliders, that you can visualize as a 2D piston with 1 Axis being powered and 1 being a slider. This allows these to completely ditch conrods and not need as much joint stacking or size, making these lower complexity, more power efficient and far more compact. These are also each a boxer 2 design to balance forces on top of that and fully engineered for yaw speeds up to ~20rpm at the size of a peanut relatively speaking. The Wonky Bearing Transmissions & AWD: We are still not done with new tech, as the transmissions are another really big part. Any transmission you know of is most likely dependent on collisions, which makes them non viable for this kind of power and for these speeds. By using 2 axles perpendicular to eachother with a wonky bearing mounted in axis to one, you can create a fully collisionless single speed transmission that can have any ratio you want, including negative ones. Pressure engines offer no throttling naturally, no engine braking and are hard to start in either direction quickly. The transmissions fix all of these issues naturally and allow for a very easy to drive and versatile drivetrain. As these engines create high power, their torque will also be quite high and would usually require a quite crazy torque compensation system, but not if you can make the second engine counterrotate. As I am already using 2 engines for AWD (1 per axle), this makes this quite easy to do and allows for very low power torque compensation with just weight to be sufficient, like on a gas car with equivalent power. The Wonky Clutch, CV-Joint & Suspension: To still give it fully independent suspension and steering, you would usually need quite a complex and large assortment of u-joint driveshafts, but not if you utilize wonky bearings with their degrees of freedom on a plane orthogonal to their axis of rotation. Using 1 of these on each wheel allows for an easy power transfer that can move vertically for suspension, aswell as being able to allow rotation for steering at the same time (the geometry is even very much near a constant velocity joint). Using 2 bearings to make them double bearing clutches adds a full torque vectoring and throttling system on top of that. Changes Compared To The Nova: Most of the changes were quite beneficial for performance, especially with handling at the top end which with kein engines is a big compromise. Due to engine torque being internally compensated, the suspension glitch could be ditched aswell making this one "glitch free" technically, which is a nice bonus. It can also run much better suspension and more steering angle with its drivetrain, since the engines aren't mounted on the wheels, which also allowed me to only run 2 wheel steering for the first time. As these engines don't have timing, it allowed me to ditch the entirety of the automatic timing electronics, which was very chonky for 4 engines and makes this vehicle much smoother in general. All the torque- and power numbers have been measured with a dyno, here is a link of mine and Ben's: https://steamcommunity.com/sharedfiles/filedetails/?id=2959348546 Tags: sports car, luxury car, estate, station wagon, all wheel drive, individual wheel drive, kein engine, pressure engine, piston engine
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