Outdated Updated Shiftlogic Automatic Transmissions 4.34

Sorry, I have no driving experience with single-clutch and I'm going to watch videos(about Audi R-Tronic and BMW SMG) to make the shift time more accurate. What do you think of the SCTs on the Semi?(you can skip gears in M mode by hitting the upshift/downshift multiple times in quick succession)

 

I have reference video of a automatic Citroen C1. Possibly the slowest ever automatic transmission but you will get a feeling for it from the video.

https://youtube.com/shorts/p7MEY_1jTpI?feature=share

 

I think there should be 2 versions of SCT depending on the car: one is for early 2000s performance car when DCT was not mature yet or was very expensive back then. These early SCT can shift quite fast and abruptly from what i can judge (E60 M5 and Lambo Aventador comes to my mind).

Then there is SCT for cheap and economy car, it's literally manual transmission, with clutch and gear actuator controlled by some kind of solenoid and motor. According to some manufacturer it's cheaper to create this than real auto transmission with TQ (even 4 Speed one, in 3rd world country they still sell brand new car in 2021 with 4spd auto). They shift SLOWLY and is not built to be driven hard and fast. they also won't rev match like sports car AMT. If you need some video reference, try using this keyword in youtube: "Suzuki AGS, Wagon R AGS, dzire ags, Alto AGS". Many of the video will be in foreign language, but you can just listen to the engine instead of the people talking. Sometimes they also make acceleration video if you need to see how it behave in full throttle condition.

I actually modified your SCT mod for Vivace and found this value to replicate cheap car SCT quite well:

"maxGearChangeTime": 1.0,
"minGearChangeTime": 0.5,
"sportGearChangeTime": 0.4,

i also modified the lua file to disable rev matching on downshift by modifying:

amtRevMatchThrottle = 0.02

and

if engineAV < gearboxOutputAV * gearbox.gearRatios[gearIndex] * (1 - torqueConverterHandling.lockupAMTRevMargin) then
M.throttle = automaticHandling.amtRevMatchThrottle

Upshift feels like real cheap car AMT now (i rode in a Suzuki Wagon R with AMT and noticed this behaviour), but downshift still doesn't feel quite right but much better than the original which was way too fast and jerky.

 

*Cough* Renault duster amt*cough* that things clutch plate and pressure plate used to go boom by around 70k kms.. whereas on a manual, you can use the clutch without much issue until a 100k kms or even more.. seems like the ZF amt isn't tuned properly for that car.. oof.

 

Yep, that's in the ETK800 and the SBR4

The 5SCT in the FCV is most suited on base model, for people who cannot afford higher trims and too lazy to drive a manual. I should tune them to shift even slower, stay tuned for the next update.

The "amtRevMatchThrottle" is specified in jbeam, not lua

Removing M.throttle from the max() function in the lua is not recommended because doing so will disable your gas pedal during downshifts. Simply reduce the "amtRevMatchThrottle" to the same as "amtIdleThrottle" will do the job
--- Post updated ---

Any recommendation where to put the cheap AMT on? Ibishu Pigeon? Hirochi Start?

 

I don't know what any of that meant but I'm still going to try it. I'm assuming it will help fix the huge delay between the downshift and WOT?

 

Base pessimas, covets, maybe the base cherrier, the sunburst, pigeon, basically the cheapest version of the econoboxes.

 

I was using manual transmission w/assist as a reference shift time.
Disconnect the gear shifter and clutch pedal(if any) and turn on the clutch assist and throttle assist on the gameplay setting. Drive the Ibishu Miramar Base(M), which has a 4-speed manual. Use X and Z to shift and watch the shift time. What do you think of this shift time? Is it slow or fast, in comparison to the SCTs for cheap cars.

 

Used the mod but I still don't know what it does, or what it's meant to do.

 

Upshifts are quite close actually but still a little bit too responsive, downshifts are way too responsive. The problem with Beam's clutch assist is that it doesn't cut the throttle during upshift and downshift, so it's kinda hard to judge how fast it is relative to real SCT since i have to take my feet off the gas pedal. Also I think beam's clutch assist release the clutch way too fast

Oh also one more thing i just remembered, Many of these cheap SCT doesn't have Park gear. Usually they only have RNDM.

 

The response time in upshifts and downshifts are the same, the perception of downshift faster is about the rev-match, the downshift time is longer than the rev-match time

Use both clutch assist and throttle assist on the gameplay setting.

Beam's throttle assist rev-matches better than most of us, if the rev is already perfectly matched, then why not release the clutch fast?

 

Can someone tell me what this mod actually does?

 

This is a vehicle parts mod, which adds more transmission part onto the BeamNG vehicles. You need to select the transmission in the menu(Ctrl+W). What the mod does are in the mod overview


Key features(which you'll immediately notice the difference)
DCT: Shift RPM is much lower when you use low(less than 25% throttle), especially shifting from 1st to 2nd. The idle creep function is the vehicle will slowly move forward in D with zero throttle and brake.
SCT: Single-clutch transmission, AKA automated manual transmission, shifts faster than most inexperienced drivers driving a manual but slower than DCT.
AT: Just drive the DT40L Highway, accelerate using 75% throttle and watch the tachometer. Then select the 6-Speed Automatic Transmission (2T4LM2) and do the same thing.

 

Much obliged man. Was scratching my head seeing all the jargon in this thread up until now, you even provided pictures. Double thumbs up

 

default0.0player updated Updated Shiftlogic Automatic Transmissions with a new update entry:

0.22 Regular Update

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default0.0player updated Updated Shiftlogic Automatic Transmissions with a new update entry:

Quick fix

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Ok so now DCTs became extremly sexy, even tho you didn't made the shift improvements (thanks to diamondback), the combination of the official DCTs and your perfectly adjusted shift decisions makes something extremly nice to drive, almost more than your AT ! In short, never let your mod die I can't play without it (unless the devs manage to improve their automatic transmission to the level of your mod)

 

Nice Job on the Cheap SCT! It's slow and realistic enough for usage in cheap cars, while not so slow and shitty that you can't have fun in it. There are actually shittier SCT than this in real life judging from YouTube videos, but i don't even wanna drive it virtually, let alone in real life lmao.

 

does this add rev matching to auto transmissions like in the etk 800 and k series? i feel like its something they really miss

 

default0.0player updated Updated Shiftlogic Automatic Transmissions with a new update entry:

Regenerative Brake Blending

Read the rest of this update entry...