Normal_aspirated Clutched December 17, 2003 Share December 17, 2003 (edited) Recently, Mitsubishi and Nissan cars are coming with these kinda gearbox, it remind me of Subaru Justy J10. Can someone enlighten me? Edited December 17, 2003 by Normal_aspirated ↡ Advertisement Link to post Share on other sites More sharing options...
Car_guru Neutral Newbie December 18, 2003 Share December 18, 2003 Simply put, the CVT uses belts and pulleys to create the gear ratios instead of using individual gears. So basically there's 2 pulleys connected by a belt. The pulleys will move away/towards each other to create different ratios. This effectively means that there is an infinite amount of ratios within a range. This is just a simple explanation, perhaps other bros can give you a better and more detailed explanation. Link to post Share on other sites More sharing options...
Lordgt Neutral Newbie December 18, 2003 Share December 18, 2003 well said. But i think current CVT uses chain instead of belts, as it frails and breaks easily. CVT gives you that seamless shift that most conventional automatic cars which still has that slight jerk. CVT will be smooth through out. In the Fiat back in 90s they came up with this similar transmission. Not sure if the Japs have perfected it, the movement of the belts or chain depends on an armature (motor). If the armature is fried due to overheating, the transmission will be stuck at that ratio and no shifting is possible. Changing the armature is just as good as changing transmission and no rebuild or recon ones are available. As the armature cannot be re-conditioned. That's why there is a sharp drop in the Fiat Punto population esp the ELX and SX versions. Link to post Share on other sites More sharing options...
Normal_aspirated Clutched December 18, 2003 Author Share December 18, 2003 (edited) That's what Subaru Justy J10 used, and was not very successful. Now Japs are making it a come back, what further improvements? Better torgue transfers or just to cut production cost? CVT is not new, just an old tech revived. What about Opel's Tiptronic gearbox in their Corsa models? Edited December 18, 2003 by Normal_aspirated Link to post Share on other sites More sharing options...
Car_guru Neutral Newbie December 18, 2003 Share December 18, 2003 Thanks for the additional info bro... Link to post Share on other sites More sharing options...
En0203 2nd Gear December 18, 2003 Share December 18, 2003 the advantage is that u can get optimum gear at any speed lor since it has infinite gear ratio, but many complain its sluggishness ler Link to post Share on other sites More sharing options...
Zombie Neutral Newbie December 18, 2003 Share December 18, 2003 Honda also, although they abondon it in the latest Civic 1.6, Civic 1.5 use CVT also... so is Jazz / Fit Link to post Share on other sites More sharing options...
Car_guru Neutral Newbie December 18, 2003 Share December 18, 2003 (edited) The CVT will theoratically have better fuel consumption than even the manual transmission since it can choose the best ratio... that's one of the reasons... anyway, the CVTs now are more reliable than the past, but it's not completely problem-free... maybe it is cheaper to make CVTs. Another reason is that with a CVT, you can preset something like 7 gear ratios, to come up with a 7-speed gearbox, like the Fit/Jazz. If you try to make a 7-speed auto or manual gearbox, the gearbox will be too big and take up too much space, unless the car is very big. For the Opel Corsa, if I'm not wrong, they are using a sequential manual, rather than a Tiptronic gearbox. The difference is that sequential manuals uses dry clutches to transfer power, like the normal manual transmission. These clutches are operated automatically, so the Corsa can still be driven like an auto. Tiptronic transmissions uses the torque converter like the normal auto transmission. Hence, it will still suffer poorer fuel consumption even though it can be driven like a manual. Edited December 18, 2003 by Car_guru Link to post Share on other sites More sharing options...
Normal_aspirated Clutched December 18, 2003 Author Share December 18, 2003 Aiyah, wait till it is perfected & then introduce it into the market. Why make consumers be "Guinea Pig" and also pay for it. Link to post Share on other sites More sharing options...
En0203 2nd Gear December 18, 2003 Share December 18, 2003 Aiyah, wait till it is perfected & then introduce it into the market. Why make consumers be "Guinea Pig" and also pay for it. i also say but research needs $$, so they can only test it up to a certain extend.. Link to post Share on other sites More sharing options...
Normal_aspirated Clutched December 18, 2003 Author Share December 18, 2003 Imagine trying to sell yr car with this kinda gearbox with faulty design? Link to post Share on other sites More sharing options...
En0203 2nd Gear December 18, 2003 Share December 18, 2003 Imagine trying to sell yr car with this kinda gearbox with faulty design? there are still ppl buying cars with CVT ler, think should be ok bah Link to post Share on other sites More sharing options...
Normal_aspirated Clutched December 18, 2003 Author Share December 18, 2003 Me? Not for now, I still stick to good old trusty multi-gears gearbox, very old tech but proven and reliable. Good torgue transfer for the time being, until CVT prove otherwise. Link to post Share on other sites More sharing options...
Lordgt Neutral Newbie December 18, 2003 Share December 18, 2003 just like what the Alfa and YRV uses. Whatever it is, CVT is something that still has a long way to go before it can safely say that its good. By far i think the best auto would still be the dry clutch system like what Alfa is using. Power is there and the reliability is ther. However, being a manual gear box, the car tends to roll backwards on a slope. Link to post Share on other sites More sharing options...
Lordgt Neutral Newbie December 18, 2003 Share December 18, 2003 wait until perfect, nobody will be able to afford the car liao. The R&D cost would be so high that its going to cost an arm or leg for a Sunny. Think about it, paying maybe 250K for a 1.6 Sunny. Would you want to be that goon goon to buy it? Link to post Share on other sites More sharing options...
Car_guru Neutral Newbie December 18, 2003 Share December 18, 2003 I like the sequential manual gearboxes... can enjoy the power and fuel consumption of a manual but don't need to mess with the clutch pedal... much more convinient for some drivers... but too bad, this kind of transmission is not widely available for affordable cars yet.. Link to post Share on other sites More sharing options...
En0203 2nd Gear December 18, 2003 Share December 18, 2003 manual is still the best Link to post Share on other sites More sharing options...
En0203 2nd Gear December 18, 2003 Share December 18, 2003 i stll prefer manual ↡ Advertisement Link to post Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In NowRelated Discussions
Related Discussions
Mother of all Avian Influenza * (H*N*)
Mother of all Avian Influenza * (H*N*)
Acceleration -- CVT vs auto
Acceleration -- CVT vs auto
Clutch for Volvo V40 T4 2013 Price?
Clutch for Volvo V40 T4 2013 Price?
Volkswagen Announces Recall for DSG Transmission
Volkswagen Announces Recall for DSG Transmission
Manual transmission cars going to be discontinued?
Manual transmission cars going to be discontinued?
Toyota Harrier Auto transmission problem
Toyota Harrier Auto transmission problem
New Medium of COVID-19 Transmission?
New Medium of COVID-19 Transmission?
This Chinese Electric Car Designed For Driving Schools Has A Fake Manual Transmission
This Chinese Electric Car Designed For Driving Schools Has A Fake Manual Transmission