Acceleration -- CVT vs auto

[RogerNg_185295]

3 minutes ago, Kklim said:

Jan 2010 Sylphy auto. Still getting 8l/100km so can't complain. 

That's the made in  Japan g11 model . Most have been scrapped already..

[GTO-1]

On 12/22/2019 at 4:59 PM, Fuelsaver said:

If CVT has manual mode will be ok. In fact, I've driven Mitsubishi Colt Plus turbo paired with CVT on auto mode and floored gas pedal, it did kick down and pick up speed. I liked how the CVT was optimizing the rpm and peak torque at 2.5k rpm where I could just hold the gas pedal at that position while watching my car pulled away from other cars. Anyway, do test drive to find out if Hyundai's CVT is to your preference.

Cvt with manual mode is a contradiction in my eyes. 

Since CVT effectively is infinite gears, all a manual mode does is try simulate a gearbox that a CVT is not. It doesn't actually do anything for performance. 

I have a CVT, it's pretty good for a CVT (Honda's) and actually does a better job than most auto's out there. One thing I can't get over is the rubberband effect. Absolutely no impact to performance but I'm used to the gear changes if an auto. 

[Fuelsaver]

5 hours ago, GTO-1 said:

Cvt with manual mode is a contradiction in my eyes. 

Since CVT effectively is infinite gears, all a manual mode does is try simulate a gearbox that a CVT is not. It doesn't actually do anything for performance. 

I have a CVT, it's pretty good for a CVT (Honda's) and actually does a better job than most auto's out there. One thing I can't get over is the rubberband effect. Absolutely no impact to performance but I'm used to the gear changes if an auto. 

The only issue I have is moving off. From 2nd gear on manual mode onwards, torque is being optimized. It didn't feel noticeably "rubberised"

[GTO-1]

2 hours ago, Fuelsaver said:

The only issue I have is moving off. From 2nd gear on manual mode onwards, torque is being optimized. It didn't feel noticeably "rubberised"

Rubberband effect is more associated with the feel that the engine revs remain the same despite the speed increasing.  There is no gear changes like a manual or auto. 

Whole different feel to a auto or manual transmission. 

[ER-3682]

Actually just say CVT are "Soul-Less'' to Drive[boring]....like Electric Cars.

[BengGaBoy]

In comparison between Nissan 2.0NA CVT and Hyundai Avante (2009) 1.6 AT.

CVT pick-up is rather slow and if you floor your pedal, beside noise and RPM increase, the speed increases on a "linear manner" and not a step up as compared with AT.

And with a 2L engine with CVT, I only managed to get 40+ km/h climbing up the hill @ Genting. I'm using "D" mode without any special mode.

Hope that helps.

 

[GTO-1]

2 hours ago, BengGaBoy said:

In comparison between Nissan 2.0NA CVT and Hyundai Avante (2009) 1.6 AT.

CVT pick-up is rather slow and if you floor your pedal, beside noise and RPM increase, the speed increases on a "linear manner" and not a step up as compared with AT.

And with a 2L engine with CVT, I only managed to get 40+ km/h climbing up the hill @ Genting. I'm using "D" mode without any special mode.

Hope that helps.

 

 Remember you can get good CVT's and bad CVT's, just like you can get good automatics and bad automatics.  

I would much prefer a good CVT over a bad automatic gearbox for example.  I was actually against CVT's previously, but now that I own one (and which is considered one of the better CVT's), I realise it's not that bad. 

[Fuelsaver]

15 hours ago, GTO-1 said:

Rubberband effect is more associated with the feel that the engine revs remain the same despite the speed increasing.  There is no gear changes like a manual or auto. 

Whole different feel to a auto or manual transmission. 

Oh I thought was referring to that slower than usual pull when pedal depressed. But if letCVT optimize peak torque I fell will still feel the pickup, depending on engine specs.

Edited December 25, 2019 by Fuelsaver

[ER-3682]

I think the reasons behind CVT for Cars Mfg is less Costs....& save Fuel,that is why Cheaper Cars all come with CVTs....That is why you never find CVT in more Expensive Cars except Hybrid.

[Jamesc]

18 hours ago, GTO-1 said:

Rubberband effect is more associated with the feel that the engine revs remain the same despite the speed increasing.  There is no gear changes like a manual or auto. 

Whole different feel to a auto or manual transmission. 

I don't mind if the engine revs remain the same despite the speed increasing. 

I think that would be a nice thing.

The problem for me for CVT is put your foot down and the rev climbs but the speed remains the same.

[Jamesc]

3 hours ago, Fuelsaver said:

Oh I thought was referring to that slower than usual pull when pedal depressed. But if letCVT optimize peak torque I fell will still feel the pickup, depending on engine specs.

For me its the same thing.

Press accelerator revs climbs but speed still then same.

 

[markw12]

40 minutes ago, Jamesc said:

For me its the same thing.

Press accelerator revs climbs but speed still then same.

 

which car was that? cvt's actually quite fun to drive, just lack the engagement.

I'm able to (somewat) "launch" my car (w/o steppingthe brakes and stepping the accelerator) there's a sweet spot (at the accelerator pedal) where (from standstill) the rpm starts off around 1850rpm (and the rpm builds up) and the speedometer climbs pretty quick (imo)

not in S mode, happened a few times in D. S would hold the rpm at 4k and if i stepped harder on the accelerator then I saw the rpm up to 6k.

unusual phenomenon, happened many yrs ago during rainy weather and the tyre tread wasn't good, moved off from standstill (some sensor sensed traction issue (?)) the gb auto locked to high rpm.

Edited December 25, 2019 by markw12

[Jamesc]

3 hours ago, markw12 said:

which car was that? cvt's actually quite fun to drive, just lack the engagement.

I'm able to (somewat) "launch" my car (w/o steppingthe brakes and stepping the accelerator) there's a sweet spot (at the accelerator pedal) where (from standstill) the rpm starts off around 1850rpm (and the rpm builds up) and the speedometer climbs pretty quick (imo)

not in S mode, happened a few times in D. S would hold the rpm at 4k and if i stepped harder on the accelerator then I saw the rpm up to 6k.

unusual phenomenon, happened many yrs ago during rainy weather and the tyre tread wasn't good, moved off from standstill (some sensor sensed traction issue (?)) the gb auto locked to high rpm.

I was on holiday in Msia and driving my relative Proton Saga on the NSH.

Doing about 100 and step on accelerator to pass a car the revs climb immediately and made a lot of noise but the speed remained the same.

Proton used the Punch CVT that is so bad Proton has now changed to a 4 speed auto in the new Saga.

I can understand why.

[yellowshaun]

Sorry ah i revive the newest old thread to ask a question on CVT.

This youtube guy says that you dont need to change to neutral while idling, but what's the reason for it?

https://www.youtube.com/watch?v=HSxg97m8lLA

 

[Contipro]

On 12/25/2019 at 5:10 PM, Jamesc said:

I don't mind if the engine revs remain the same despite the speed increasing. 

I think that would be a nice thing.

The problem for me for CVT is put your foot down and the rev climbs but the speed remains the same.

many drove CVT found it not fun mainly also it is usually pair to low cc and NA engine.. 

for any type of transmission the pull factor may contributing around 10% (my opinion), the rest 90% is depending the engine power.. 

you can match any lighting fast DCT/ auto tran, but if pair to lousy engine power; the fun = zero.. 

 

 

[Ody_2004]

6 minutes ago, Contipro said:

for any type of transmission the pull factor may contributing around 10% (my opinion), the rest 90% is depending the engine power.. 

 

In real life maybe "transmission the pull factor may contributing around 10% (my opinion), the rest 20% is depending the engine power.. 70% on the DRIVER"

I see Nissan Latio I half sian oredi@ 😂

[Didu]

I've driven GE Honda Fit. There's some rubber band effect when paddle down, but there's also acceleration, although I won't characterize it as back against the seat kind.  Maybe because the car is light. Regardless, a CVT demands proper transmission oil change schedule if you want it to last. 

[ER-3682]

12 hours ago, yellowshaun said:

Sorry ah i revive the newest old thread to ask a question on CVT.

This youtube guy says that you dont need to change to neutral while idling, but what's the reason for it?

https://www.youtube.com/watch?v=HSxg97m8lLA

 

Short idling like Red Light,just left in D,less Wear & Tear.