I Tried To Create a Supersonic Gearbox [Screw Drivers]

Screw drivers is probably my favourite game currently being played on the channel just hoping we would get a bit more often

Time for a bit of a physics lesson: Your acceleration is the total force applied to the car divided by the weight. When your acceleration reaches 0, you're at a constant speed. The total force on the car can be divided into two parts, the force going forward and the force going backwards. Backwards is things like friction, and drag. It depends on a lot of things, but mostly speed. The faster you go, the more drag (quadratic). The force forwards is, not exactly the same but directly related to, the torque you see on the engine graph. This means that you want the resistance force to be equal to the force produced by the torque provided at that speed. That means you'll have reached your top speed. All engines have a certain performance graph that shows the torque they gave at each RPM. If you know the size of your wheels you know the RPM you need the final axle needs to spin at. Now we know both the RPM and the required torque! Slap a few engines on, and make a gearbox such that at the required RPM there's enough torque. For gears: when you use a certain ratio (say, 1:2) the rpm increases by that much, but the torque decreases by the same amount (or reversed, of course). So what happens when you put a 1:2 gearing on an engine is that the theoretical max speed doubles, but the power it has to get there halves. So there are a few things to do when building a car for this. Minimize drag so the torque required is minimal (although that's impossible afaik in this game). Then pick an engine, I believe the largest combustion one has the highest RPM limit. Gear this down so you're like 90% of the way on to the RPM limit at your required speed (shown in game on the graph). Then just keep adding engines until you have enough torque to actually reach that speed

Scrap man, your top speed is fixed by your maximum rpm of the engine, the engines do not spin infinitely fast, and adding more engines does not change the max rpm of previous engines. You trade torque(acceleration) for top speed with gears. The more engines you have the more torque you have available to trade for top speed, but that top speed change doesn’t happen automatically Edit: this doesn’t take into account aerodynamics

Man I was just wishing there was more screwdriver. Love this game

Tips: > Add more engines (electric and combustion) Need more power! > Planetary gears have an aggressive ratio. So using more than one or two seems to be bad for acceleration. So add them close to the engines before gear shifters. > Add sequential gears. 2-gear shifters that are linked in sequence. This will stop the game from ignoring whole gearboxes. Considering the length of the vehicle, go crazy. > Wing pieces in different orientations like sideways, may help with wind resistance.

have a spoiler that turns upside down, now u got wings also try spoiler "fan" / "propeller"

Slimmer car with more power will have more chance to brake the sound barrier. You need to be rear wheel drive and your rear wheels need to be slightly larger than the front ones. The best way to to get a lot of power in this game is to stack engines, you can stack the small combustion engine by putting two "axises" parallel to each other and stacking the engines on them, and the best way to stack the big combustion engine is to put them in a "boxer" formation or a "flat v" formation

Because of the gears you’re using each gear is only multiplying your RPMs by 2.3 times. Therefore 3rd and 4th gear are doing nothing. Start with a simple 6 speed gear box - one 3 gear selector, one 2 gear selector. Basically you need more gears and you need a greater difference between the gears.

The reason the last gear at 27:30 isnt working is because all the holes of the gear shift are connected, so you technically have a "gear loop" going on so it doesnt work probably

okay so i have an idea scrap man to have more room for the engine/power source and be able to use gears in the empty space on the left side of the car you made which means you're going to have more power and you will be able to put gears and stabilize the weight more easily and efficiently. front wheeled car's engine is mounted sideways inorder for engineers be able to use bigger engine in a width area so the car is not going to be so long like most of the cars you built in the game, so with a corner gear the output/drive shaft is going to be on the left or the right side depending on how you're going to build the engine, and if it's in the left for example you'll be able to put gears on left side, in the the middle and the right side (3 shafts in total) and connect the output to the rear wheels with a corner gear.

This map has two races btw! Do try and get gold on them, they're the hardest in the career

13:02 full power baby

i'd say go as skinny as possible, wind resistance seems to be purely front surface area from what I've seen. go with a skinny build like the first one but maybe use a transmission after 1 or 2 planetary gears along with some medium to small gear ratios to get the rest of the top end.

Scrapman, you went for top speed and had a low acceleration. Use gear shifting to rapidly get faster, I tried it on one of my cars and it works. The more engines you have the higher the rpm.

I've been enjoying screw drivers a lot, finally made a 12 speed transmission from a 6 speed I made, and today I compacted it by 77% and made it a modular thing that I can build from, I want to make some different transmissions though because I think it's too many gears.

Hey Scrap! I'm sorry to burst your bubble. I've actually dived deep into this and currently the game doesn't have powerful enough engines to hit Mach Speed. I've tried every possible iteration. The problem is we need more torque since the engine can only produce Max 5700rpm Speed and when we try to meet the torque requirements for converting that rpm to Mach Speed we simply hit the power to weight ratio limit. So it's technically not possible atm in the game the usual way. We need higher RPM engines or engines with much more torque. However, if we go the unconventional route you can beat the sound barrier with propeller based thrust using the downforce wings but sadly that too is very buggy and doesn't always always work. Anyways, awesome attempt Scrap! I had spent about 24 hours trying to beat the sound barrier and it's just not possible with every iteration. Even with the electric, it has more torque but it's almost twice as heavy and way lower RPMs, you simply hit the power to weight ratio limit again way sooner than the combustion engines. (P.S. : The only other way you'll have enough torque to go that fast would be to have an absurdly low wind resistance pushing against the car from accelerating further.)

The solution is adding propellers, they're really efficient

More power baby! 13:03

at this point you'll need one hell of an engine to overcome wind resistance

Wooooooo new screwdrivers video