I Tried To Create a Supersonic Gearbox [Screw Drivers]
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- เผยแพร่เมื่อ 16 ต.ค. 2024
- Welcome to another episode of Screw Drivers! Today I want to try to build a vehicle capable of breaking the sound barrier. Will I be able to figure out how to build a gearbox capable of pushing a vehicle to this limit?
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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
Edit: it seems like people don’t understand that I understand that gearing is how you achieve top speed. But given a fixed gear ratio adding more engines does not increase top speed, that is what I was trying to say
exactly. The comment he made about not gaining more speed with the bigger engine is that both of their max rpm was 5100rpm to 5700rpm. So increasing rpm should increase top sped.
It's not exactly the entire picture as air resistance is in play, if u just put gear for increasing speed, it won't work as the torque needed to overcome the air resistance will not be sufficient and it won't atain speed as now u don't have torque to accelerate to that speed
@@malhardeadshot6118 You are correct I was more addressing Scrap man’s confusion when adding more engines as to why it doesn’t change the top speed, I should have stated I was talking about theoretical top speed
It also looks like if your electrics max out then the gas engines are also maxed out even if they're not... Or vice versa
The Trailmakeficafion of the brain is very harmful indeed
Screw drivers is probably my favourite game currently being played on the channel just hoping we would get a bit more often
I cant wait for screw drivers to add wings and props
and fix the lag@@royalphrog
@@royalphrog yeah flying has been quite the hassle, I managed to make a helicopter but no plane yet
Trueee its so fun to watch
@@llyttine helicopter???? tf?
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
Something I forgot to add, the gear ratios in the game are 4:5:8. Which means your idea of the planetary gearboxes was correct, with it's 1:2.7
This condenses one year of automotive-transmission lecture to a few simple sentences with all that is necessary to know in this context 👍
I don’t have time to read this but I know you’re smarter than me by a lot 😅
TL;DR need more boosters
long story short ... MORE POWER XD
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.
He should go with combustion only since they work with higher rpm, are lighter and smaller.
@@sopadebronha Won't he need all the torque he can get though..? I also think one big motor is enough.
@@rdtripler5604 He needs torque at high RPM, not low RPM. 2 combustion engines will have more torque, less weight and smaller volume than 1 eletric.
@@sopadebronha Got it. So a massive compound engine with like a 10 speed shifter should get him to go supersonic with acceptable acceleration.
@@rdtripler5604 Not necessarily. I did it with a 6-speed gearbox and 8 Engines. Just make sure the car is very narrow to reduce drag.
If you want to check my car, you can find it in the workshop as Supersonic 8B440-6R.
Man I was just wishing there was more screwdriver. Love this game
You mean you can't wait for more?
Same. I want more
Hi ScrapMan! After watching your video I've decided to try to build my own car to break the sound barrier. Here's what I've found:
- Combustion engines are (a bit) better than the electric engines. This is because it's much easier to make a compact engine block with combustion engines than with electric engines. This causes wind resistance to be lower. My car used 8 of the best combustion engines and no electric engines.
- Turbos and capacitors don't have a big effect on performance but can increase your wind resistance significantly. It could be better to get rid of them.
- Don't try to over-engineer a gearbox, 1 or 2 gears should be enough. My car only used 1 gear and it can break the barrier. This means that your acceleration will be terrible however your weight and wind resistance will be lower so you'll have more power at high speeds. I used a medium to small gear transition and 3 planetary gears. This allowed my combustion engines to have their maximum torque at around 900-1200 kph. It's more important to have higher torque at higher speeds since wind resistance will have a bigger effect at high speeds.
- Try to minimize the width of your car. I've found that wind resistance depends a lot on the area so the smaller your wheelbase is the lower your wind resistance will be. The small suspension is great for this.
- Try to make your car as thin as possible. Big gears cause a lot of wind resistance so don't use them. Planetary gears and small and medium gears should be all you need.
- Big racing wheels increase your top speed compared to the small racing wheels while having the same wind resistance. You can therefore use your wheel choice to finetune your top speed. This will however NOT show up in the power graph and only in the top speed number.
- At 23:55 you were stuck at 795 kph. I suspect that this because combustion engines underperform at high RPMs. A potential solution could be to switch to manual shifting to shift to the next gear.
I'm still figuring things out myself and hopefully, these tips will help you to break the sound barrier in your next video. Good luck!
All design considerations you mentioned match up with what I found, except I went with electric. 10 red electric engines got me 1460+, also keeping wind resistance to a low 39.
have a spoiler that turns upside down, now u got wings
also try spoiler "fan" / "propeller"
I've been messing with this trying to make an airplane, and while it works in theory, the gears turn in arbitrary directions and so there's no way to make the propellers turn different ways. No matter how I set the gears up, both would go clockwise, and my entire build would spin counterclockwise as a result.
@@coryman125Kinda wish proper mechanical mating was considered in the direction of forces
Problem 1 of 3: The teleport seems to (no matter where you enter a map edge) put you at the _center_ of the opposite edge.
1.A: You (probably) want to start at an edge, in order to potentially have one less teleportation event at speed.
1.B: You'll want to aim just slightly inside of the map corner, so that you hit an end of the opposite map edge. Go in a 1-to-2.1 direction (25°-ish from straight). Luckily there's squares on the ground that will help you keep that heading. It looks like that will take you comfortably past the city.
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
Definitely dont need to have bigger rear wheels, absolutely no need for differently sized wheels, in fact, all it would do is give you worse air resistance.
You can also stack banks of 6 large size gas engines very space efficiently.
@@BeefIngot Every land speed record vehicle designer vehemently disagrees with you.
@bubbleman2002 No idea where you get that from. Look on the workshop for supersonic. You can see a super sonic 662 hp super sonic vehicle showing what I'm saying is completely sensible.
@@BeefIngot No, I mean the real ones, that have a job, and make money from doing it, not pretend ones.
@bubbleman2002 You realize that real life land speed record vehicles are few and far between right?
Furthermore, actual designs vary quite a lot and the record thus far has involved a massive jet engine which completely changes the aerodynamics. Interestingly looking at the padt few record holders all seem to have similarly sized wheels.
Compounding on that, of these vehicles, I haven't seen any with the design talked about so name your sources.
Lastly, we are talking about how to create one within this game, for which I've already left information that is verifiable.
Basically, regardless of which way this is interpreted, and despite the rudeness of the insinuation, there's nothing supporting what you're saying.
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
agreed, the side-holes of the gear shifters somehow also count for transmission and that negated any effect the additional gears would have had. Not sure how ot use that to one´s advantage, so far i have only learned to avoid this effect. Looking forward to the next attempt!
@@stableton can use that effect with planetaries going into 2shift with 3shifts fairly effectively. since the whole axle that is connected to a gearshift is considered one piece with the gearshift, you can have different gear ratios being input into another gearshift. you can effectively double the amount of gears you can cycle thru, allowing you to keep the acceleration up for longer. you can add three in total on a gearshift, allowing 3x the gears, but it's unclear if the effect is a glitch or intended feature. experimenting with it may lead you to some very interesting builds :P
@@furry5996 Good idea! thank you
You can build your gearbox vertical instead of going sideways, it will get rid of pulling into one side and probably lower drag because car will be way more narrow
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.
why are the 3rd and 4th doing nothing? 2.3^3>2.3^2
So... The planetary gears are the greatest difference between gears unless you make a ratio with at least 3 gears.
The small, medium, and big gears are 4:5:8, if I remember correctly. Which 4:8(1:2) is not as much as 1:2.3.
Planetary gears appear to be the best option here.
@@dragong33kSame question. Does the math simply stop working after that or what? 😂
@@dimazkamaz no, 2.3^4>2.3^3
@@dragong33k I meant it as a question to OP's comment
This map has two races btw! Do try and get gold on them, they're the hardest in the career
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.
i mean these transmissions are fun but what is the practical use case of such a transmission? you spend more time shifting then accaleratin
I've reached mach 2 in my top speed attempts. A couple of tips:
1. Air resistance is one of if not the most important factor at really high speeds. You need to make your vehicle as narrow and low as you possible can. Every block counts. Length is free real estate.
2. You need more power. Remove the electric engine and add several more combustion engines with turbo's. The electric engine is useless in this kind of top speed setup because it caps at a lower RPM than the combustion engines. When the electric engines reach their cap they shut down and do nothing at all, so for a large part of the torque curve (and crucially, when you get near the top speed and your combustion engines are giving their peak power), your electric engine is literally turned off and just dead weight.
3. Try different tire sizes. Wheel radius is essentially an extension of your final gear ratio and thus affects top speed, but keep in mind air resistance.
4. As for a clean trajectory so you don't hit buildings/hills: Just drive south following the road but before reaching the southern border move TWO lanes (grid squares) to the left (aim for the center of the second grid square left of the road, at the southern edge of the map). This will line you up perfectly with the road again on the north side of the map.
Note that looping around the edge of the map teleports you to the opposite side, so any corrections you make to your trajectory need to be MIRRORED. If you end up teleporting too far to the left and miss the road, aim more to the right next time around, and vice versa. The central road is slightly offset from the actual center of the map, hence you need to aim two squares to the left. With some practice you can find a trajectory that is ever so slightly angled to the left where you can repeatedly loop around the map and drive over the road and the speed trap repeatedly with minimal or zero steering.
If you wanted to know how the aerodynamics work:
1. Each block has their own wind resistance engines tile < flat block tile
2. Because of #1, slanted blocks are the most preferred
3. It only accounts for the very first blocks in the front that are hit.
4. Because of #3, adding a slanted block where the wind wouldn't have been hit makes it worse. (Normally even if it means that you have a slanted block where it wasn't before. Creation of tiles for air resistance is almost always bad)
5. After every block check the aerodynamics. The menu does not refresh on its own. Many times it seems that things should be better when they aren't, or vice versa.
These are things ive noticed through experimentation! Hope this is helpful
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.
( *MAYBE YOU SHOUDNT READ IF YOU WANT TO FIGURE IT OUT BY YOURSELF* )
I was able to do this is 30 minuts including the time to accelerate to the top speed which was 1400 km/h. Here is what I think you should improve:
1. More power - you can even smash 20 engines with turbos in a line to get more acceleration.
2. No electric engines - they have bad attachment points.
3. Insted of from mid gear to big go for examle from mid to small (IMPORTANT).
4. I used i gear shifter and I have 3 gears, you dont need more then 1 gear shifting part.
5. You can move the part with planetary gears.
15:34 - this is the closest you ever were, but becase of the big gears you werent fast enough and becase of the low power you werent accelerating a lot.
I got 1460+ using ten red electric motors, 4 planetary gears, one small-to-medium gear reduction, and no shifters or combustion engines.
Electric can work too.
@@IstasPumaNevada attachment points are pretty bad on them thats why I think using combustion is better. If the attachments would be better combustion engines would be trash. And with combustion engines I have 772 power and its enough when you are using gear shift.
13:02 full power baby
Scrap man
Weight doesn’t really matter when trying to go for sound barrier aerodynamics more important
you want the gear ratio to give max torque (Nm) just before sound barrier on the final gear
you primarily want to use combustion engines because of the higher rpm allowing for a lower gear ratio
aerodynamic is very important you can use the aerodynamic wings and place them in front of flat surfaces and that decreases the drag
Should be around 60 with 100 the highest it should be and with my Mach 1 vehicle it sat at 47
Horsepower you want horsepower to be 1000 minimum with a maximum at 10k if you can’t get Mach 1 with 10k then horsepower isn’t the problem
I personally used the skinny rubber wheels because they create less drag but other wheels still work
So rare for ScrapMan to not accomplish his goal! Nice to see he's human like the rest of us lol. Great video!!
More power baby! 13:03
Problem 2 of 3: You just need a higher engines-per-cross-section-area ratio in order to not get overwhelmed by drag early. And if you had a higher engines-per-unit-of-dead-weight ratio, you'd not need as many separate gears.
2.A: Add more engines.
2.B: Reduce your cross section. Those 5 wide gears that take the power off the different planetary stages could be 1-wide gears instead.
2.C: You can probably get away with taking power out after 2, 3 and 4 planetary gear sets (and dump the extra gear switcher). You only spend 6 seconds in first gear, and you'd really not loose much if that was 12 or 15 seconds instead.
2.D: Reduce your weight anywhere you can. Your 4 planetary gears will probably do more than the size of your wheels or any amount of extra gears. And with not a lot of acceleration and no cornering, your grip shouldn't matter. I'd just go with the _lightest_ wheels (and road suspension). And I'd check if connecting the front and back with _axles_ is lighter weight than making that connection with _beams._
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.
Such a polite editor :D adding usefull tidbits and clues on how to help Scrapman but I bet she/he was screaming at their screen "YOU NEED MOAR POWAAAA"
I would suggest putting the shifter on the input axle before the planetary gears. I think that would simplify it a lot.
Great video as always!
Problem 3 of 3: The "optimal rev range" for the electric and combustion engines seem quite misaligned.
3.A: You probably want to connect them with a small gear on the axle through the combustion engines and a medium gear on the axle through the electrics. That would also allow you to put 2 (or more) of those electrics into your drive train.
Your engine isn't supplying enough torque to achieve your top speed, add more engines, my advice would be adding 2 more blaze 1000s in the same configuration you've already used, then mesh several of the electric motors on the front side with gears
You can also minimise the torque steering by adding the weight blocks to the side without the gear linkages, extra weight improves stability massively in Screwdrivers
I love how dedicated Scrap Man is he’s on that grindset cranking out bangers every other day!
This is the best series you made so far. Keep up the good word scrap man👍👍
Wooooooo new screwdrivers video
It took me 6 hours too break the aound barrier. The map transition is brutal, but there are sweet spots on certain parts of the border. Tips that came to mind:
1) Way more power. Use many electric engines in series.
2) Orient your gears vertically in order to improve wind profile and balance.
3) The first suspension is the best im terms of wind profile.
4) Plan for other activities while you wait for the game to load a successful vehicle. 20 minutes minimum :/
You just need a lot more engine power to overcome the wind resistance at high speed. I broke the sound barrier fairly easily with a single gear that had the top of the power curve at mach speed and 20-30 of the best gas engines. The gas engines are ideal because their power increases at higher rpms which is when you need the power to overcome the wind resistance. Also keep your vehicle as long and skinny as possible.
All gear ratios: (Big gear to Small gear -> BS)
BS=2 , SB=0.5
BM=1.6 , MB=0.625
MS=1.25 , SM=0.8
This means: B:M:S=8:5:4
You approach is actually a very good one, i expected something worse, im impressed
I just knew he was going to start testing the limits of this game. Its been a fun ride.
In the immortal words of Jeremy Clarkson, "Speed and power!"
You have the speed, but you don't have the power
Just stick a ton of engines on this thing and have a big gearbox.
In physics (such as with batteries) -- putting things in parallel gives you the same voltage but allows more power to flow (more current).
I guess you could try having two drive shafts (each on drives its own rear-wheel) and you connect the same gear ratio to them from the main drive shaft.
my favorite game currently on the channel, i hope you will bring more!
Yes Mo Powah Baby!! Lets go Editor!! you have no idea to where that brought me man
MO POWAH BABAY
On the final version the last set of gears are merging from a medium to small and small to small causing them to “grind”
it doesnt matter in this game (yet or maybe forever) the spin direction of the gears also dont matter and fix themselves magically once they reach the wheel
Simple answer, add more engines. The complex answer is up to you, you make the videos.
I managed 1280Km/h by making a noodle of a car that is basically something around 20 gas engines strapped to a 3 gear gearbox with planetary gear sets (similar to what ScrapMan has done) and some extra gears to make the ratio right and the thinnest large rubber wheels with the smallest suspension... It takes 2 lengths of the map to reach max speed... and the warps require some luck (found it to be more stable by going south on the map where it usually teleports me to the top but a bit to east - forcing me to curve a bit to be aligned to the road)...
Regarding how aerodynamics seem to work in Screw Drivers: Each time a line of wind has to shift up/down/left/right, the air resistance rises. The thing that tends to cause the wind to shift around is the gearbox, since the wind will often hit one gear, shift left/right to avoid it, and then just hit another gear. Using the aesthetic blocks isn't strictly necessary, but keeping the air flowing around the vehicle rather than through it is the best way to reduce your air resistance, and this is easiest to do with the aesthetic blocks (particularly the small 45-degree blocks, in my experience).
In the case of this vehicle, I suspect it's less about the air shifting back and forth (though that's likely still present), and more about how much the wind is being forced to shift in order to go around certain parts. For example, if the wind hits one of the big gears right next to the axle, it'll have to move over two spaces to get around it. This seems to be calculated as worse than just shifting one time, but twice. In other words, wedges are bestest.
(Also, in my experience, the performance gains of low wind resistance far outweigh the detriments of added weight, no pun intended)
Although simple, I liked the straight planetary gear setup. Just extend each axle segment by one, so there's a gap between each planet gear part. Then just connect an electric engine (2nd tier) to each stage. Should apply enough torque to speed you up faster. If not, extend the gap again and add another. Makes use of the way engines activate/disconnect just like the gearing system, but without needing the complex gears to deliver power from a central source to the end.
Someone incorrectly stated that supersonic vehicles are not possible. This is very much so untrue.
I've made a few myself, with gas engines only even (hybrid really doesnt work well in this game due to the unrealistic way the electric motors work), and there are many on the workshop.
You need a proper gearbox, some decent power, and you want to have a very small frontal area for aerodynamics.
I've done it with a vehicle with 76 air resistance too, so you don't even need to get super fancy with that. Just chuck a dozen to a couple dozen engines because you will indeed need a lot of power. I think I did it with just over 1300 horse power using banks of 6 engines to have as small a frontal area as possible.
Manual shifting (you can set it in the settings) really helps as the shifts don't work as they should and if you try to use automatic, the gears just stop shifting after about 6th gear.
You can be awd, no problem, no need for rear only or different size wheels or any of that. Just proper gearing, enough engines and a small frontal profile.
In my experience with gear ratio and power you have the right idea but you should have the biger gears after the planetary gears going into small or mediums so you get better gear ratio. Also if you would switched your main power going from the axle connected to your engines to a gear ratio would work better too.
The best transmission should look like a y=1/x graph because the acceleration in the stats is the area of the graph but the time it takes to switch gears takes some time and slows you down. Because of this there is an optimal amount of gears which depends but I think it is six or less gears
@@tomasmokrys4635 that all depends on the number of gears and the spacing. So there actually isn't an optimal number of gears for all applications. My 12 speed transmission I made has too many gears, because it spends more time waiting to upshift on the first 4 gears because they're so low. But, they are useful gears, because of the traction control in the game. The more gears a transmission has, the more like a convex curve the torque graph looks like. 4 isn't enough for gas motors, maybe for electric, and 6 is exceptable for gas motors. But it's not optimal.
Why not just shove in like 10 electric engines and then gear all those up to get to mack 1?
Or is there a limit on how many engines you can have?
3 tips/ideas ScrapMan: Tight and even gearing, nitro maximalization, engine gearing offset.
Tight and even gearing - try to maximize your acceleration by making 2 separate gearboxes (as You tried in this video) with 3 gears each. Note that gaer sizes are not 1,2,3 but 4,5,8 and those are sizes used for ratio calculation. From my excel file I calculated that optimal and easy proportion between gear in first gearbox should be gear2/gear1=1.25 or 1.28 while for second gearbox it should be …=2. This is compact, easy to achieve 9 gear system.
Nitro maximalization- try using 2nd gen. comb. engines to have small weight and HUGE amount of nitros, they give large boost of power at thin range of rpm. I believe You can abuse it with tight gearing.
engine gearing offset - even with tight gearing nitro power surge is thin, so I advise you create 2 sets of engines connected to main shaft (and from there to gearbox) with very similar ratios, 1/eng2=1.08 is achievable easily. This will widen the nitro surge just enough cover your entire toque/speed graph instead of making large peaks followed by valleys
Hope this helps
I love your engine block. I don't see a lot of people do that.
The solution is adding propellers, they're really efficient
Less front profile is key to aerodynamics. Aim for a small front pofile gearshift (mine's like 5x4x3) that's stackable as needed. Around 25-30 wind resistance full build. Gas engines go in line. Basic suspensions and medium tires. Or carriage tires, but aestetics is a thing:)
I can’t wait to see Scrap Man take on the Oval Race challenge. I haven’t made a vehicle fast enough to Gold it yet, let alone be able to hold that speed the whole way.
quintuple your engines and remove the gear shifters to reduce weight and check out the wagon wheels maybe they could be of use to you
Acceleration. "1 Meter per second" is wild 🤣🤣🤣
Wait 10 minutes?
1 hour of construction?
Which do you think is more logical?
Is no one gonna tell him that the final gears do nothing since they’re all interconnected and limited by the smallest gear ratio on the chain?
And in real life since the gears are opposing each other they would rip each other apart, so the game is actually being quite generous because it couldn’t move in real life and I may or may not be talking from experience from watching a compound gear system with a similar final drive to scrap mans System except it was geared for torque instead of top speed rip itself apart about six times before I figured out, The issue
[step 0] You can stack gears vertically. Meaning you can try to narrow your width and make a longer car. In the goals to halve your frontal cross section.
[step 1] as your first iteration: you had a theoretical top speed of over 6000km/hr. You want to take that super high RPM and improve the torque with a shifter. Maybe you need 12000km/hr theoretical top speed to get enough torque. - In that one could calculate this speed. However just iterate a few times.
[step 2] if you are not comfortable driving back through the urban road furniture (along the road), then drive to from the start until you get to the generic repeating pattern (following the line that contains the road). Thus you can turn 90° and drive only in empty space, as you can follow the grid markings to avoid too much deviation from your new driving vector.
You should use the item that moves parts that you got in a previous video to try and make a walker
This is funny. You now have the bg music that channel 'Undecided' used, and at the same time, he changed his bg music
This is going to be a series not just a video to get to the sound barrier.
Suggestion:
keep the 4 planetary gears.
bc you DEFINITELY need more engines you should save weight on the gears, and use only combustion engines.
the electric engines can't reach even close to the speed of sound.
a slimm frontal profile, but im not sure how aero works so good luck with that.
aero is also affecting the map transition, sometimes destroying the vehicle.
IF POSSIBLE go for a motorcycly-thingy, maybe some
support wheels to get up to speed then throw them off.
im going to try something alike tonight
You can stack the big gas engines, they have a 1x1 slot to go on the axel, if you rotate them correctly then you can fit 2 engines in the same axel space, for just a slightly wider engine space
Finally, scrap man supersonic gearbox.
By building your shifting axles horizontal, you create asymmetry and width, causing a lopsided weight issue. Instead go vertical, keeping the entire mechanism dead centred. Most of the vehicles you win from the Kings try to demonstrate this.
You need ooooh so much more motors…
btw, you can place Electric ones side by side and connect them via medium gears one output shaft.
I often use them on the side, left and right, and the first in the row are connected to each other which has the beginning of either the gear train, or… more motors XD
I think u should try adding propellers on planatery gears cause it seems to spin them at a very fast pace and increase top speed as well as acceleration to imsane levels ✌🏻
🤫 Hey! That was our little secret... Don't talk about propellers!
Propellers are fake news. We dont talk about that out in the open
Your inclination is in fact correct, Although the power difference isn't all that great. Rwd tends to have Overall higher power than awd or 4wd. Since some of the energy in the system is converted to heat through friction, adding in a transfer case on top of a front axle takes away a very small amount of the overall power. Additionally you have the added weight of the transfer case and front axle. In conclusion awd will give you better off the line acceleration due to the advantage of higher grip, but rwd will generally have the higher top speed do two less energy loss throughout the drive train.
Relating to the video, I’ve actually made a five speed transmission using only Gear shift twos. And the less power you put into it, the less gears you have. Also made a three speed As well with gear shift twos. It can be done, just a bit harder.
Build the other side too, use small to biggest going back and forth. The planetary is not the way, but it will be the best starting point. Setting the electric engines on the same dowel as the gas is hurting you too. Separate them. Wind resistance will not be much of a factor if you double the spoilers to make a wedge.
Scrapman, try putting the gear shifter directly in the combustion engine (4 of 600cc), 1^ gear small to big 2^ medium to medium and 3^ big to small than the axis connected with three planetary gear for the rear axis, finally an electric engine in both of the front wheel.
You don't even need a gearbox to go supersonic
Just reduce your drag as much as possible
This man never rests until he's broken the sound barrier
First thing, you really don't have to use so many gears for the 3 speed shifter. You can use 2 large, 2 medium, and 2 small gears on two axles and it'll work great, like this with the shifter at lower right:
L S
| M
M |
| L
|
S
Now, some things I've learned in my own attempts at breaking the sound barrier (I've only gotten to 1060 so far). The map seems to mirror both your North-South and East-West coordinates, so if you were hitting the edge at 1000, 10 you'd come back in at -1000, -10. Unfortunately the road is just off center, and you have very little time to adjust once it actually starts showing buildings. But what does work is to parallel the road well to the side of the buildings, you'll then stay parallel to the road and just alternate sides. I've also found that the large gear generates far too much drag, I ended up almost doubling my drag by using it, and drag seems to be the main thing. And finally, use lots of engines, I saw someone saying they'd done it with 12 of the largest piston engines, so I've been trying with 16 and thinking I might want to use more.
Edit: So I did pull it off, with a few different variations on a design. Generally a 3 speed shifter with planetary gears followed by 2 2 speed shifters, driven by 16-20 of the top combustion engine, and driving all 4 small suspensions, with just under 50 wind resistance. I also determined that following the road requires moving over by exactly two of the empty circle patterns on the ground, but having enough control to do that at 1200 kph is its own challenge and it costs 10-20 kph each time if you can.
Last night I was having a hard time sleeping as I was thinking of why my "6 speed" gearbox only had 5, and my "9 speed" only had 7 (the 7th skipped to 8th immediately as it was a ghost gear) and make calculation about gear ratio and facepalmed me... I had gear configuration that had the same ratio so the game didn't use them... so made a true 6 speed gearbox and now I'm currently playing with value in a google sheet to check how much I can get out of 3 "Gear Shift 3" pieces... so far 25 gears... need to test it out obviously to see if they work like I think or not but love this game xD
thanks for the inspiration. my turbocharged v24 quad electric hits 1148kph single gear now im trying to make an all electric sonic barrier breaker, 1019kph so far. single gear is fun and hard but the answer is more powah or and resistance/aero
More power (hp) equals more torque.
Your theoretical top speed is good. Just add more power so that the power delivery system can handle the power needed to make it there.
You can “only” change the top speed via gears. The top speed without gears is capped by the motors rpm, we cannot add more rpm to the motors.
That means if your train line of gears have a certain ratio, then the amount of engines WONT change the top speed cause it’s already maxing out its rpm. BUT adding more power via more motors WILL increase the power delivered via that train line of gears. Giving it more torque throughout every gear. Cappish? 🤪
Easy peasy.
MOAR POWAR!!! Also, you can build the gearbox vertically to make it symmetrical.
Try using a propeller up front. I've seen others get crazy speeds with them. Might be something to look into.
my top speed was about 850kmph. i dont know if i can get it any better
look fwd to when sm attempts to learn more, this game seems to be a great way to learn with effort
1. More engines = more acceleration
2. balance your car so it isn't turning, which would be adding more wind resistance and ground friction.
Hey scrapman, the game skips certain gears if it changes the direction of the drive shaft, near the end you had a gear shifter with 2, 3 and 4 gears in series respectively, that means the middle one would spin in the opposite direction!
My suggestions:
I think you're power limited and need more engines.
For the gear switch you could have the different gear ratios in between the planetary gears (planetary gear - large - medium - small - planetary gear - etc) if you can figure that out.
For aerodynamics it's highly likely to be based on the surface area on the front of the vehicle, so the smaller footprint you have looking from the front likely the less air resistance there will be, so try to build as thin as possible.
Wind resistance in screw drivers is calculated pretty weird, the more times air needs to be pushed out of the way, the more drag you'll have. That sounds normal but the amount of blocks air gets pushed up doesn't actually matter, so the best way to reduce your wind resistance is to have a flat wall infront of your car that covers every part behind it. This has been tested by me and a bunch of other people in the discord and is the easiest way to reduce drag
I do suggest pulling up a supersonic vehicle from workshop and examining it for a while. Gotta show you somen
I bought this game after seeing your videos on it. The best speed I've had so far in my supersonic attempts is 1177km/h and that was with a brute force approach with lots of engines. 4 E-motors driving a central shaft with medium to small gears then a fifth e-motor and seven IC engines driving that. That shaft then goes through three planetary gears for a theoretical top speed of 1364 (or something like that). Unfortunately the bumpy transition when map-wrapping destroyed my car less than 100km/h away from the sound barrier.
who scammed you? how can you buy a free game?
Wtf?
I've done it with just over 1300 HP with a 76 wind resistance rating.
I used only gas engines and a 9 speed gear box.
Now, with how gearboxes work... this is a videogame, so theoretically you could make a gearbox faster than light
at this point you'll need one hell of an engine to overcome wind resistance
jimminy x-mas scrapman.
Keep your chunky engine exactly as it is.
create spaces between each plantetary gear.
Add 1-3 electric engines between each gear stage.
in this approach You will always have some torque at each stage due to the each of the electric motors being in its power band when that stage is below the max rpm. you will continue to have low acceleration at high speed but you will hop up the low end acceleration.
also... you really should think about the vertical as well as horizontal when it comes to gearing.
you can press shift while in free drive to turn your camera around and get a better look at the gears
At 25:49, you can clearly see the new gear ratio, and if look at it closely, you'll see the middle ratio has an even number of gears on the receiving end, while the 2 have odd. This means the only reason to switch to that would be for going backwards.
AWD would actually help. The power gets distributed to all wheels and that makes the acceleration force distributioon more powerful in relation to one powered axle. Also, you could give the engine like 2-4 more gas engines (nice boxer engine btw) and might get the needed power to get up to the speed of sound in that game.
Easy fix… you can‘t change the max rpm of your engines… what you can change though is peak torque by adding (as much as I hate them in cars) electric engines for more torque early in the rpms or combustion engines with turbos for late rpm torque.
By the way: torque helps against wind resistance too.
I didn’t realize scrap man was also a car guy. Sick GR Corolla
Tried to break the sound barrier and trail makers with zero power core
11:10 one day...
I got 1460+ km/h.
4 planetary gears, plus a single small-to-medium regular gear reduction. Theoretical max speed of 1503.
Chassis is twin runs of four 15x beams spaced five apart (so you can fit a 5-long beam between them), connected on the outside with 1x2 beams (they don't appear to increase drag as they're behind the front wheels). Ten turbo-volt TX 300 (red) electric motors with double capacitors, in pairs facing each other longitudinally, between the 15x beams, offset to one side, with the power transmission going down a shaft alongside them. The smallest, most basic suspension, "Suspension Small". I have both front and rear suspensions a single space apart (connected by a 3-long shaft) with a medium gear in there to transmit power into the narrow gap. Racing Wheel Small. No shifting, only single speed.
Total wind resistance of 39. The car's as long as the build platform. Could probably extend it further with more power and slightly higher gearing for possible speed gain.
I had some iffy bumps during the map wrap-around teleportation but it never caused me to crash or lose much speed.
thanks for the idea,
I created a car which can go 1590km/h.
~1230 km/h is a nice sound effect :3