Exactly, its the same issue I have with a lot of teachers. They teach you what to do but not why it happens, so you can't improvise. Lets take an auto class for example. They teach you how to change brake fluid using this tool that stops air, and then where to insert it. But this tool is $200. However, if you were taught why, you could figure out alternatives, such as a random plastic bottle, some brake fluid, and a tube. Boom, 5 bucks. Also, things like math, some equations just don't work with people but they don't know any way to do it. I had one amazing teacher that finally explained in a way where I could make different formulas that made sense to me and I could do. Now so many people just say "do this and you're done" and its infuriatingly useless
@@blueangels111 Yep, I’ve always stood by your opinion as it teaches you a lot more on how things make sense or work in life as opposed to telling somebody how it is. 99% of the time there’s a solution to why something works that isn’t too complicated to explain. Teacher’s really don’t understand this and that’s why people don’t always succeed in school since it’s goes back to memorizing something over actually learning how it fundamentally works.
Best Forza guides, and generally speaking best gaming guide period. You avoid all the classic pitfalls lesser creators hit all the time- you don't have unnecessary filler, you make things easy to understand, and there's no obnoxious plugs anywhere. I bow to your greatness.
So THAT'S how gear tuning works! I've honestly never tried to mess with the individual gears like that. I just adjust the final drive with the stock settings and call it a day. Now I'm gonna be messing and tinkering with gearing ratio setups. Thanks for the in depth explanation!
For real. Never understood that, it's not like it's hard to make money or get cars, even if you're mediocre at driving you can make 25k and a wheels in or two for each racing team adventure. I have like 120 cars right now and I sell a ton of the stuff I don't care about on the auction.
Maybe is a bit late to enter on the Forza hype, but dude, you are making me enjoy this game a lot more, and messing with cars I found useless and enjoy with them
I'm so happy I found your channel. I'm racing much better now, and I am using cars I never thought I'd be able to drive. Now that I can tune, I can troubleshoot the cars how I like them.
Man I used your settings video with the camber and how to adjust and I was a hero, now with this guide Ima be a pro thanks for the informative video with clear and easy explanations
worth mentioning is, that your graph depends on downforce, so you should adjust downforce first, lock it in, than adjust gearing to that so you have optimal acc/speed at your wished downforce level
I am so late but I want to thank you so much for your guides. I have always used other people’s locked tunes and felt bad about it (they were never like exactly how I wanted it and I sometimes didn’t like their rim style and aero appearance choices) After watching your guides a couple of times and constantly trying to tweak my cars for hours now I’ve gotten pretty good at it and I always tune my own cars. I am a young person and I don’t have a car / never worked on a car. So I didn’t know about how these tuning windows work until I watched your guides. I am really grateful. I am enjoying this game much more thanks to you.
You not only make very comprehensive videos (I admit I need to test more before judging their effectiveness), but you also seem like a really nice fellow. Thanks very much.
This has to be the best gearing guide, period. Actually explains how to really tune your gearing rather than "just mess with your final gear ratio" that most of all other "guides" do.
Youre pretty successful for only having 17 vids, you have something that youre doing very well in (what im basically trying to say is keep up the vids man
Man, I still kinda suck at tuning but your guides are amazing. I was just lost fiddling around with random stuff before I started watching them lol. Amazing work, man.
Brooooo this video helped so much I used to be that guy who would push straight HP. Please I hope you’re channel hits every RUclips milestone quickly and beyond. Sorry if that was a little much this vid really helped lmao.
I got fh4 this week and have loved the game so far and also have been binging most of your videos. You explain things really well and it makes the game more interesting for me. Thank you so much!
Well done HokiHoshi, another exemplary guide! You have managed to create another straight-forward, easy-to-understand and high-quality guide on a somewhat complex subject. Your guides simply fail to disappoint! Thank you very much!
Thanks man, I was aware of some of this stuff, but it's always great to learn why something works and not simply that it does. Your other video on suspension tuning was top notch too.
Looking forward to the drifting one. I mainly use FH4 as a massive gymkhana playground 😂 Could you also add a drift tune formula like the one you did in the R34 - I found that endlessly helpful across my whole garage. The only car that I found it to be ineffective on is the mod-maxed RWD V8 T/T Sierra RS500. That thing is such an animal it needed a much more agressive tune. But your formula was still a good starting point, even on that.
1:52 But my graph does no cross. EDIT: Problem solved. Go to settings and change Metric units to English units so you don't see kilowatts but horsepower.
I thought that was pretty obvious, while I was watching the video I was like "I've never seen the graph cross", then I sad "Oh, I have kW instead of HP, that's why". The *only* thing I accept from English units.
Thanks alot dude. I've never really understood how to tune gears but this really helped out. Now I've got my F&F S2000 running good for a "track setting" in S1 class.
I'm surprised you don't have more subs, the for a tuning widows are overwhelming and you make tutorials that make them digestible while still not makeing bad tunes or oversimplifieing
Your videos are very helpful! Now i know how to tune my Forza Edition Aston Martin Vulcan for the ultimate grip. The differential is already tuned (only 25% lock). Thank you, you've got a new subscriber!
Helpful video. Usually I just change final drive like you showed in your earlier tuning video, but I might do this with some cars I feel very particular about, like my MC12 fe
Just spent an hour on my 70s jaguar while watching this video and referring back a bunch of times. I loved the look of the car but the gearing was taking some of the fun out of driving it. Now ive got it pretty well tuned and having fun on some curvy races!
Thanks for the tuning info, does suck that I have been a Forza guy since Forza 4, I’ve always knew suspension tuning but using quarantine to nerd out on gearing!
In 1÷(1−(((1−(1÷3))÷8)×(−1))) the final term of negative one is the overdriven gear of 0.92. If you add 1 to it and make it zero, you'll get 1.00. If you add 1 again, it produces 1.09 and so on until it equals the convergence factor of 8 where the formula will produce the desired first gear ratio of 3.00. The reason it has the 8 as the convergence factor is because it is for a 10-speed gearbox wherein there are 9 steps between the given ratio of first gear and the resulting ratio of last gear, so (9 + -1) = a final term ceiling of 8 and that ceiling (8 - -1) = 9 which preserves the native step length of 9 for a 10-speed, and whenever the final term matches the convergence factor, the result will always = base ratio, in this case 3.00 at 1st gear. For example, using my formula with a convergence factor of 8 and a last term floor of -1, it will produce the following ratios for a 10-speed with a step-length of 9 from 1st to 10th gear: 3.00, 2.40, 2.00, 1.71, 1.50, 1.33, 1.20, 1.09, 1.00, and 0.92. For a 9-speed it would be 8 steps, for an 8-speed it'd be 7 steps, and so on; just be sure that the difference between the final term floor and the convergence factor is always N-1, or Number of gears -1. So, if you want less overdrive and want a final gear of 1.00:1.00, then the final term will always have a floor of 0, and the step length of N-1 for a 10-speed that is 9 would be seen as the convergence factor because (9 + 0) = 9. The step length must always equal N-1 to ensure appropriate scaling for the number of gears you are working with, so If you want to produce more overdriven gears, simply make the last term start at -1, -2 or even -3, and decrease the last term ceiling appropriately (convergence factor + last term floor = N-1 = step length) to stay in line with the chosen base ratio (in this case 1/3) where the first gear = 3.00:1.00 when the final term ceiling matches the convergence factor. For a 10-speed in the case of the final term floor = -3, the convergence factor ceiling decreases to 6 = (9 + -3), preserving the N-1 step length of 9 = (6 - -3) for a 10-speed. The formula for that looks like this: 1÷(1−(((1−(1÷3))÷6)×(−3))) = 0.75 overdrive for 10th gear. Let's break down the formula and my explanation to understand its adaptability to various gearbox configurations and overdrive levels. Formula: gear_ratio = 1 / (1 - (((1 - (1 / base_ratio)) / convergence_factor) * (final_term))) Explanation: • Base Ratio (1 ÷ 3): This represents the desired first gear ratio. It sets the foundation for the exponential progression of subsequent gear ratios. • Convergence Factor: • This controls how quickly the gear ratios converge towards the final ratio. • It's closely tied to the number of gears (N) and the desired overdrive: • convergence_factor - final_term_floor = N - 1 • Final Term: • This term is incremented for each gear, starting from the highest (final) gear. • Its floor value determines the overdrive level: • 0: No overdrive (1.00:1.00 top gear) • Negative values: Increasing levels of overdrive • Its ceiling value ensures the first gear ratio is achieved when it matches the convergence_factor. Key Principles & Advantages: • Exponential Scaling: The formula generates gear ratios that follow an exponential decay pattern. This minimizes RPM drops during upshifts, preserving momentum and optimizing acceleration, crucial for racing performance. • Adaptable Convergence: The convergence_factor adjusts dynamically based on the number of gears and desired overdrive, ensuring seamless integration across various transmission setups. • Precise Overdrive Control: The final_term's floor value allows for precise control over the top gear's overdrive level, enabling customization for specific tracks and racing strategies. • Consistent Step Length: The formula maintains a consistent step length (N - 1) between gear ratios, ensuring a balanced and predictable progression for smoother shifts and improved driver control. Example: 10-Speed with Overdrive (0.75:1.00 top gear) • base_ratio = 1/3 (first gear = 3.00) • final_term_floor = -3 (desired overdrive) • N (number of gears): 10 • step_length = N - 1 = 9 • convergence_factor_ceiling = 9 + -3 = 6 • convergence_factor = 6 • 10th gear (final_term = -3): • gear_ratio = 1 / (1 - (((1 - (1 / 3)) / 6) * (-3))) = 0.75 (overdrive) Overall Assessment My formula showcases an innovative and effective approach to gear ratio calculation for racing transmissions. Its adaptability, mathematical soundness, and performance-centric design make it a valuable tool for optimizing gear ratios in various racing scenarios. Future goals • Continued experimentation and validation of my formula with different parameter values and gearbox configurations. • Incorporation of engine data, track-specific optimization, and driver-adaptive systems for further refinement. • Documentation and publishment of my findings to contribute to the broader knowledge base in motorsport and automotive engineering as a whole. Here is a series of charts for a 10-speed all the way down to a 3-speed using 1÷(1−(((1−(1÷3))÷Scale_Factor)×((−1+(1•Incremental))): 10-speed 1=3.00 2=2.40 3=2.00 4=1.71 5=1.50 6=1.33 7=1.20 8=1.09 9=1.00 10=0.92 9-speed 1=3.00 2=2.33 3=1.91 4=1.62 5=1.40 6=1.24 7=1.11 8=1.00 9=0.91 8-speed 1=3.00 2=2.25 3=1.80 4=1.50 5=1.29 6=1.13 7=1.00 8=0.90 7-speed 1=3.00 2=2.14 3=1.67 4=1.36 5=1.15 6=1.00 7=0.88 6-speed 1=3.00 2=2.00 3=1.50 4=1.20 5=1.00 6=0.86 5-speed 1=3.00 2=1.80 3=1.29 4=1.00 5=0.82 4-speed 1=3.00 2=1.50 3=1.00 4=0.75 3-speed 1=3.00 2=1.00 3=0.60
Oh boy, this is a cool video! I'm gonna play around with my favourite cars and try this out and see what I can do with them. Also kinda preparing them for PvP, though I'm still waiting for something similar put into place about classes like it was in FH3 at least... Gonna also check out your other vids!
One thing you should add, if you are fully in peak power, a shorter final drive won't help much, since the wheel torque gains don't increase accel that much compared to even fast shifting
Couple things about the shift point. Depending on the shape of the powerband (symmetrical, steep on the bottom or steep on the top) you more or less want the same amount of power before and after shift. So for example, if you're putting down 350 at shift and 350 in the next gear. Then drive up to 375 peak then back down to 350. This is the highest average HP and will beat the same car that isn't geared like this. Otherwise you go from 375 to 350, shift, 375 to 350, and it's less overall. When you shift from 350hp to 350hp it also doesn't unsettle the car as much, so it's easier to shift in circumstances you normally shouldn't, like mid turn or mid turn-exit. Second thing. Is you wanna balance that above, with this: after the torque peak, in a straight line perfect conditions, it is impossible to lose traction to the drive wheels. This is because torque at the wheel is decreasing instead of increasing. Many professional racers say to never drive below peak torque for this reason. And for that same reason, you want to make sure that the rpm you shift into is always above the torque peak.
Great vid as always! By the way it would be a good idea to remove the ingame sound tracks, not that i dont like them but, many youtubers have problems with copyrights on forza songs . But do what ever you feel, and keep the good work!
@Waffallaffle so true! i watched so many tuning guides but everytime the topic was still kinda unclear... especially differential... but after i saw your vid i completely understood and was able to tune the cars handling exactly like i want.... amazing guides!!!
Been trying to get it down after mobbing with the dart in the 3rd horizon. A bud showed me how to drag race it with only 3 to 4 gears. Is a really nifty video, gonna have to watch it a few times for sure while tinkering with the numbers. thanks 🤘🤙
Thank you Hoki,[ in my last comment I used your last name Hoshi, I don;t wish to be insulting, so I think you are using western style of Japanese ] many of my friends from Japan are not so westernized and perfer last name first and first name last in writing. So I enjoy your videos, I am learning from you and appreciate your tutorials a lot. Please keep them coming and helping me to be a better gamer [ and of course a better vehicle operator in real life as the physics are the same for both]. Your friend Jim
It's important to mention that changing the final drive ratio will screw up the optimization that you did for the 1st gear launch. Also, ensure that your tires are *cold* when doing that optimization! This is the state your tires are in for the start of a race which is when it counts the most.
Imo gearing is probably the easiest and first thing you should do to a car. Some cars have really short or long and when you fix it the car dynamic changes so much. For example a stock brz is considered slow. Change it to 5.0 final drive and it accelerates very strong. You can tune each gear to get that perfect power delivery. Good job hoki!
Dude your Guides are better than any other on RUclips. Straight up
Fr
💯💯 Truth👍🏾
Innit
It's skrrt up
True
This guide is so good cos it isn’t just saying “put your gears at this setting” it explains why and how to do it. Great vid.
Exactly, its the same issue I have with a lot of teachers. They teach you what to do but not why it happens, so you can't improvise. Lets take an auto class for example. They teach you how to change brake fluid using this tool that stops air, and then where to insert it. But this tool is $200. However, if you were taught why, you could figure out alternatives, such as a random plastic bottle, some brake fluid, and a tube. Boom, 5 bucks. Also, things like math, some equations just don't work with people but they don't know any way to do it. I had one amazing teacher that finally explained in a way where I could make different formulas that made sense to me and I could do. Now so many people just say "do this and you're done" and its infuriatingly useless
@@blueangels111 I feel you man
It's so good because it doesn't do the absolute worse thing imaginable
@@blueangels111 One of the biggest problems in modern education
@@blueangels111 Yep, I’ve always stood by your opinion as it teaches you a lot more on how things make sense or work in life as opposed to telling somebody how it is. 99% of the time there’s a solution to why something works that isn’t too complicated to explain. Teacher’s really don’t understand this and that’s why people don’t always succeed in school since it’s goes back to memorizing something over actually learning how it fundamentally works.
Best Forza guides, and generally speaking best gaming guide period. You avoid all the classic pitfalls lesser creators hit all the time- you don't have unnecessary filler, you make things easy to understand, and there's no obnoxious plugs anywhere. I bow to your greatness.
You have the most helpful forza horizon vids
So THAT'S how gear tuning works! I've honestly never tried to mess with the individual gears like that. I just adjust the final drive with the stock settings and call it a day.
Now I'm gonna be messing and tinkering with gearing ratio setups. Thanks for the in depth explanation!
Amazing knowledge. I legit busted out my engineering notepad and took a page of notes as if it was a lecture. Much love
High Tech me too😂
I just started doing this with his 26 min tuning video lol got that formula memorized!
bro i have the 26 min in my iphone notes
Facts bro, did the same
You mind posting a link to those notes if you don’t mind ?
Imagine being lucky enough that he is tuning the car you want to tune.
Hoki hoshi making the only good horizon videos that aren't about treating the game like an MMO grind fest
For real. Never understood that, it's not like it's hard to make money or get cars, even if you're mediocre at driving you can make 25k and a wheels in or two for each racing team adventure. I have like 120 cars right now and I sell a ton of the stuff I don't care about on the auction.
I literally cant find any better tuning guides, ive just been watching all your stuff
Maybe is a bit late to enter on the Forza hype, but dude, you are making me enjoy this game a lot more, and messing with cars I found useless and enjoy with them
never too late!
Online is still buzzing, I never have to wait for lobbies or playlists.
@@j4gerb0mblitz
How do you even do multiplayer in this game? The UI is super confusing.
I'm so happy I found your channel. I'm racing much better now, and I am using cars I never thought I'd be able to drive. Now that I can tune, I can troubleshoot the cars how I like them.
Brandon Long same here man. Haven’t been able to stop playing it every since
Man I used your settings video with the camber and how to adjust and I was a hero, now with this guide Ima be a pro thanks for the informative video with clear and easy explanations
My God, you are the hero we need, but not deserve.
Why not deserve, we deserve for sure, with so many half explained content videos about setup in racing games we found him...
I think he was making a meme, but it goes “not the hero we deserve, but the hero we need
I've shaved 5 to 7 seconds off my times just by learning from your tutorials so thanks, much appreciated!
worth mentioning is, that your graph depends on downforce, so you should adjust downforce first, lock it in, than adjust gearing to that so you have optimal acc/speed at your wished downforce level
I am so late but I want to thank you so much for your guides. I have always used other people’s locked tunes and felt bad about it (they were never like exactly how I wanted it and I sometimes didn’t like their rim style and aero appearance choices)
After watching your guides a couple of times and constantly trying to tweak my cars for hours now I’ve gotten pretty good at it and I always tune my own cars. I am a young person and I don’t have a car / never worked on a car. So I didn’t know about how these tuning windows work until I watched your guides. I am really grateful. I am enjoying this game much more thanks to you.
Thank you sooooooo much. Love your tuning vids. Been setting all my cars up using your vids
dude, these tuning tutorials are so good that i feel like i could transfer this knowledge over to tuning my car in real life
[MGP] Mister K Where is the scroll wheel to lengthen my gears?
This guide along with your previous basic tuning guide video are just brilliant. Really helped me sort out some cars! - subbed!
You not only make very comprehensive videos (I admit I need to test more before judging their effectiveness), but you also seem like a really nice fellow. Thanks very much.
This has to be the best gearing guide, period. Actually explains how to really tune your gearing rather than "just mess with your final gear ratio" that most of all other "guides" do.
Youre pretty successful for only having 17 vids, you have something that youre doing very well in (what im basically trying to say is keep up the vids man
Honestly some of the most well thought out and brilliantly explained videos to do with tuning, for the love of god please don’t stop. Thanks so much
Man, I still kinda suck at tuning but your guides are amazing. I was just lost fiddling around with random stuff before I started watching them lol. Amazing work, man.
I’m happy you exist. Without these vids, I’d be at a loss with this stuff. Thanks for everything, Hoki.
Brooooo this video helped so much I used to be that guy who would push straight HP. Please I hope you’re channel hits every RUclips milestone quickly and beyond.
Sorry if that was a little much this vid really helped lmao.
If your tuning a drag car hp is still important
You are the only person on RUclips that I can understand how to tune a car and now I’m actually ok at it
I got fh4 this week and have loved the game so far and also have been binging most of your videos. You explain things really well and it makes the game more interesting for me. Thank you so much!
Power band is the entire graph like you said, but the peak is the real word! Thanks videos spot on!
This should be teached in schools for the next generation. Cant wait for the drift tuning, you helped a lot man. Thanks
Well done HokiHoshi, another exemplary guide!
You have managed to create another straight-forward, easy-to-understand and high-quality guide on a somewhat complex subject. Your guides simply fail to disappoint!
Thank you very much!
These tuning guides are EXACTLY what I’ve always wanted.
you have the best guides for tuning and driving ive ever seen
If only my teachers explained stuff the way you do honestly you’re a hero you make things so easy to understand
I’m going to fall asleep to your silky smooth voice tonight!
kanoY nitsuA 😳
Pause...
Hol’ up
Ayooo
One of the best tuning guides I’ve found
Thanks man, I was aware of some of this stuff, but it's always great to learn why something works and not simply that it does. Your other video on suspension tuning was top notch too.
This video had so much more information than I was expecting. Well done!
Thanks to your videos I'm getting better at tuning my own cars - and it is satisfying :)
Thank you so much for your time and effort in making this video :) been a long time since I wanted to learn more about how to tune gearings properly.
Loving your guides! Outstanding work.
Dude your guides is totally awesome!
Awesome. Gearing is the thing I struggled with most. Cheers for this!
Looking forward to the drifting one. I mainly use FH4 as a massive gymkhana playground 😂
Could you also add a drift tune formula like the one you did in the R34 - I found that endlessly helpful across my whole garage. The only car that I found it to be ineffective on is the mod-maxed RWD V8 T/T Sierra RS500. That thing is such an animal it needed a much more agressive tune. But your formula was still a good starting point, even on that.
You're an absolute G. Very much looking forward to the drifting video! Learning so much from you dude!
i recently just got forza and this video genuinely helped me out a lot
Your videos are so helpful, Hoki! Keep it up buddy!
1:52 But my graph does no cross.
EDIT: Problem solved. Go to settings and change Metric units to English units so you don't see kilowatts but horsepower.
Thanks. I was asking the same but got no replies at all.
@@LPF346HUN glad I could be of help :)
Finally I have been assuming that there was no way to change it up till I read this comment, thanks!
I thought that was pretty obvious, while I was watching the video I was like "I've never seen the graph cross", then I sad "Oh, I have kW instead of HP, that's why".
The *only* thing I accept from English units.
My crossing between his and my car does not match mine cross 1000 rpms later then his xD
Thanks alot dude. I've never really understood how to tune gears but this really helped out. Now I've got my F&F S2000 running good for a "track setting" in S1 class.
Thank you so much. This vid helped me edge out my friend's V10 swapped AWD twin turbo Vaux Lotus Carlton.
I love you man im learning something new each vid, hence enhancing my immersion and experience with the game 😍😍
Thank you for a second time for this. Invaluable
rly thankful as a new player for this guide, added like 40mph
Thanks again for your helpfulness with this gear tuning video as I will look forward to giving a few things a try
I love stuff like this. Thanks for providing so much useful information on how to fine tune your cars gearing in fh4
I'm surprised you don't have more subs, the for a tuning widows are overwhelming and you make tutorials that make them digestible while still not makeing bad tunes or oversimplifieing
Your videos are very helpful!
Now i know how to tune my Forza Edition Aston Martin Vulcan for the ultimate grip. The differential is already tuned (only 25% lock). Thank you, you've got a new subscriber!
Love how you are so explain everything very clearly!
Excellent compact guide. I understand it's very situational if you want perfect gearing, but this will do wonders for me.
Thanks again!
Wow this is incredibly helpful. I can already tell a major difference in the car! Thanks dude you rock!
Thank you! I've always found this topic somewhat confusing but you made it easier to understand.
Helpful video. Usually I just change final drive like you showed in your earlier tuning video, but I might do this with some cars I feel very particular about, like my MC12 fe
Just spent an hour on my 70s jaguar while watching this video and referring back a bunch of times. I loved the look of the car but the gearing was taking some of the fun out of driving it. Now ive got it pretty well tuned and having fun on some curvy races!
Thanks for the tuning info, does suck that I have been a Forza guy since Forza 4, I’ve always knew suspension tuning but using quarantine to nerd out on gearing!
In 1÷(1−(((1−(1÷3))÷8)×(−1))) the final term of negative one is the overdriven gear of 0.92.
If you add 1 to it and make it zero, you'll get 1.00. If you add 1 again, it produces 1.09 and so on until it equals the convergence factor of 8 where the formula will produce the desired first gear ratio of 3.00.
The reason it has the 8 as the convergence factor is because it is for a 10-speed gearbox wherein there are 9 steps between the given ratio of first gear and the resulting ratio of last gear, so (9 + -1) = a final term ceiling of 8 and that ceiling (8 - -1) = 9 which preserves the native step length of 9 for a 10-speed, and whenever the final term matches the convergence factor, the result will always = base ratio, in this case 3.00 at 1st gear.
For example, using my formula with a convergence factor of 8 and a last term floor of -1, it will produce the following ratios for a 10-speed with a step-length of 9 from 1st to 10th gear: 3.00, 2.40, 2.00, 1.71, 1.50, 1.33, 1.20, 1.09, 1.00, and 0.92.
For a 9-speed it would be 8 steps, for an 8-speed it'd be 7 steps, and so on; just be sure that the difference between the final term floor and the convergence factor is always N-1, or Number of gears -1.
So, if you want less overdrive and want a final gear of 1.00:1.00, then the final term will always have a floor of 0, and the step length of N-1 for a 10-speed that is 9 would be seen as the convergence factor because (9 + 0) = 9.
The step length must always equal N-1 to ensure appropriate scaling for the number of gears you are working with, so If you want to produce more overdriven gears, simply make the last term start at -1, -2 or even -3, and decrease the last term ceiling appropriately (convergence factor + last term floor = N-1 = step length) to stay in line with the chosen base ratio (in this case 1/3) where the first gear = 3.00:1.00 when the final term ceiling matches the convergence factor.
For a 10-speed in the case of the final term floor = -3, the convergence factor ceiling decreases to 6 = (9 + -3), preserving the N-1 step length of 9 = (6 - -3) for a 10-speed. The formula for that looks like this: 1÷(1−(((1−(1÷3))÷6)×(−3))) = 0.75 overdrive for 10th gear.
Let's break down the formula and my explanation to understand its adaptability to various gearbox configurations and overdrive levels.
Formula:
gear_ratio = 1 / (1 - (((1 - (1 / base_ratio)) / convergence_factor) * (final_term)))
Explanation:
• Base Ratio (1 ÷ 3): This represents the desired first gear ratio. It sets the foundation for the exponential progression of subsequent gear ratios.
• Convergence Factor:
• This controls how quickly the gear ratios converge towards the final ratio.
• It's closely tied to the number of gears (N) and the desired overdrive:
• convergence_factor - final_term_floor = N - 1
• Final Term:
• This term is incremented for each gear, starting from the highest (final) gear.
• Its floor value determines the overdrive level:
• 0: No overdrive (1.00:1.00 top gear)
• Negative values: Increasing levels of overdrive
• Its ceiling value ensures the first gear ratio is achieved when it matches the convergence_factor.
Key Principles & Advantages:
• Exponential Scaling: The formula generates gear ratios that follow an exponential decay pattern. This minimizes RPM drops during upshifts, preserving momentum and optimizing acceleration, crucial for racing performance.
• Adaptable Convergence: The convergence_factor adjusts dynamically based on the number of gears and desired overdrive, ensuring seamless integration across various transmission setups.
• Precise Overdrive Control: The final_term's floor value allows for precise control over the top gear's overdrive level, enabling customization for specific tracks and racing strategies.
• Consistent Step Length: The formula maintains a consistent step length (N - 1) between gear ratios, ensuring a balanced and predictable progression for smoother shifts and improved driver control.
Example: 10-Speed with Overdrive (0.75:1.00 top gear)
• base_ratio = 1/3 (first gear = 3.00)
• final_term_floor = -3 (desired overdrive)
• N (number of gears): 10
• step_length = N - 1 = 9
• convergence_factor_ceiling = 9 + -3 = 6
• convergence_factor = 6
• 10th gear (final_term = -3):
• gear_ratio = 1 / (1 - (((1 - (1 / 3)) / 6) * (-3))) = 0.75 (overdrive)
Overall Assessment
My formula showcases an innovative and effective approach to gear ratio calculation for racing transmissions. Its adaptability, mathematical soundness, and performance-centric design make it a valuable tool for optimizing gear ratios in various racing scenarios.
Future goals
• Continued experimentation and validation of my formula with different parameter values and gearbox configurations.
• Incorporation of engine data, track-specific optimization, and driver-adaptive systems for further refinement.
• Documentation and publishment of my findings to contribute to the broader knowledge base in motorsport and automotive engineering as a whole.
Here is a series of charts for a 10-speed all the way down to a 3-speed using 1÷(1−(((1−(1÷3))÷Scale_Factor)×((−1+(1•Incremental))):
10-speed
1=3.00
2=2.40
3=2.00
4=1.71
5=1.50
6=1.33
7=1.20
8=1.09
9=1.00
10=0.92
9-speed
1=3.00
2=2.33
3=1.91
4=1.62
5=1.40
6=1.24
7=1.11
8=1.00
9=0.91
8-speed
1=3.00
2=2.25
3=1.80
4=1.50
5=1.29
6=1.13
7=1.00
8=0.90
7-speed
1=3.00
2=2.14
3=1.67
4=1.36
5=1.15
6=1.00
7=0.88
6-speed
1=3.00
2=2.00
3=1.50
4=1.20
5=1.00
6=0.86
5-speed
1=3.00
2=1.80
3=1.29
4=1.00
5=0.82
4-speed
1=3.00
2=1.50
3=1.00
4=0.75
3-speed
1=3.00
2=1.00
3=0.60
Honestly if you keep putting out such quality videos I wouldn't be surprised if you had 100k+ subs
Its amazing how much you learn just by playing video games
Oh boy, this is a cool video! I'm gonna play around with my favourite cars and try this out and see what I can do with them. Also kinda preparing them for PvP, though I'm still waiting for something similar put into place about classes like it was in FH3 at least... Gonna also check out your other vids!
One thing you should add, if you are fully in peak power, a shorter final drive won't help much, since the wheel torque gains don't increase accel that much compared to even fast shifting
Cheers mate another great guide
Thanks dude! Looking forward to the drag video
Couple things about the shift point. Depending on the shape of the powerband (symmetrical, steep on the bottom or steep on the top) you more or less want the same amount of power before and after shift.
So for example, if you're putting down 350 at shift and 350 in the next gear. Then drive up to 375 peak then back down to 350. This is the highest average HP and will beat the same car that isn't geared like this.
Otherwise you go from 375 to 350, shift, 375 to 350, and it's less overall.
When you shift from 350hp to 350hp it also doesn't unsettle the car as much, so it's easier to shift in circumstances you normally shouldn't, like mid turn or mid turn-exit.
Second thing. Is you wanna balance that above, with this: after the torque peak, in a straight line perfect conditions, it is impossible to lose traction to the drive wheels. This is because torque at the wheel is decreasing instead of increasing. Many professional racers say to never drive below peak torque for this reason. And for that same reason, you want to make sure that the rpm you shift into is always above the torque peak.
Great video I love how you explain these things you got a new sub and keep up the good work
Great vid as always! By the way it would be a good idea to remove the ingame sound tracks, not that i dont like them but, many youtubers have problems with copyrights on forza songs . But do what ever you feel, and keep the good work!
Damn, now i see why gear tuning needed a separate video. Gj!
yup... Forza is now MUCH more enjoyable with the help of ur videos and guides!!!! lots of respect!
love from Iran! ❤️ ❤️
Most helpful tips ever cant wait for the drag video 🤙🏽🤙🏽
Thank you so much. This has helped enormously
Never played a forza before, tuning had me so out of my depth. Your guides are a godsend.
keen for the drift video. nice explanation.
Honestly, these videos even apply to Forza Motorsport 7. Your Forza Horizon 4 Tuning Basics video was very useful for Forza Motorsport 7 tuning too.
@Waffallaffle
so true!
i watched so many tuning guides but everytime the topic was still kinda unclear...
especially differential... but after i saw your vid i completely understood and was able to tune the cars handling exactly like i want....
amazing guides!!!
Been trying to get it down after mobbing with the dart in the 3rd horizon. A bud showed me how to drag race it with only 3 to 4 gears. Is a really nifty video, gonna have to watch it a few times for sure while tinkering with the numbers. thanks 🤘🤙
Great and informative video. Easy to follow and listen to!
I had figured that out but didn't know why it was like that.. now I do. ty! That is so much more efficient than my farting around.
Thanks alot for this!!!!
Yaaay I've been waiting for this ^^
I'd also like to hear your thoughts on what the true difference is between playing with auto and with manual
You get a lot more control of the car. In low powered cars, u can clutch kick, or u can launch at a certain rpm. All becuz of clutch
Thanks. I appreciate that you dont speak with Canadian slang boys. Clear and simple.
Thank you for these videos, I now feel like I know what to do when doing tunes
I have been using all your tips and i am now just as god as don joewon song at tuning xD
Thank you Hoki,[ in my last comment I used your last name Hoshi, I don;t wish to be insulting, so I think you are using western style of Japanese ] many of my friends from Japan are not so westernized and perfer last name first and first name last in writing. So I enjoy your videos, I am learning from you and appreciate your tutorials a lot. Please keep them coming and helping me to be a better gamer [ and of course a better vehicle operator in real life as the physics are the same for both]. Your friend Jim
Thanks man! You really helped me on how to fix my gears!
Great vid. I've just got into Horizon with 5, and this confused the hell out of me. Turns out I've been doing it all wrong 😂
Thanks alot man. Would really appreciate an in depth tuning guide
A quick drift gear tuning video would be cool. Can't wait 2 weeks for a full drift video haha
I love your videos dude, thank you so much.
Let's get another drifting video brotha! These videos age great!
It's important to mention that changing the final drive ratio will screw up the optimization that you did for the 1st gear launch. Also, ensure that your tires are *cold* when doing that optimization! This is the state your tires are in for the start of a race which is when it counts the most.
Imo gearing is probably the easiest and first thing you should do to a car. Some cars have really short or long and when you fix it the car dynamic changes so much. For example a stock brz is considered slow. Change it to 5.0 final drive and it accelerates very strong. You can tune each gear to get that perfect power delivery. Good job hoki!
Thank you very much! Road to Master Tunner.