Recent Topics
Mother's Synthetic Wax ?
by ChrisD46
Today at 04:22 AM
That Sound
by Merkava_4
Today at 03:14 AM
Which Mobil oil to stock for VAG
by riggaz
Today at 03:04 AM
SHAREWEAR OR FREE DRIVER PROGRAMS? SUGGESTIONS?
by bmwjohn
Today at 03:01 AM
Better oil equals more hp?
by Dylan1303
Today at 01:46 AM
Anyone Here Sell a Vehicle on ebay?
by ZeeOSix
Today at 12:54 AM
Should I upgrade?
by dishdude
Today at 12:40 AM
Two Beater Car Option Choices
by FirstNissan
Yesterday at 11:09 PM
Missing bellhousing bolt
by buck91
Yesterday at 10:36 PM
2015 Silverado Trany Pan drop
by Realtech214
Yesterday at 09:34 PM
Transfer Case Lube Substitution?
by TheLoneRanger
Yesterday at 09:32 PM
Taking a day trip to New Orleans...what to do?
by gregk24
Yesterday at 09:30 PM
Motorcraft FL500S filter cut open
by AccF150
Yesterday at 09:16 PM
What car wash to use before clay bar?
by DreamerGT
Yesterday at 08:15 PM
Any love for E-mowers/lawn equipment?
by salcuta88
Yesterday at 08:14 PM
Takata Airbag Recall..."Loaner car" Conundrum
by SumpChump
Yesterday at 08:09 PM
Incorrect Lifter Clearance - Vacuum issues?
by Spetz
Yesterday at 07:41 PM
looking for a dealership decal...
by earlyre
Yesterday at 07:23 PM
Kalifornya gas tax
by 04SE
Yesterday at 06:51 PM
How does a 2-step pressure relief oil pump work?
by GravelRoad
Yesterday at 06:46 PM
Newest Members
starshockey, Jarredm, KovMan, John300ZX, MariaKaras
61021 Registered Users
Who's Online
41 registered (dec219644, ChevyBadger, 87sammy, Char Baby, Darren_L, 5 invisible), 1232 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
61021 Members
66 Forums
263014 Topics
4342634 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 5 1 2 3 4 5 >
Topic Options
#3425429 - 07/15/14 11:42 AM CVT with shift sensation
wing0 Offline


Registered: 10/08/12
Posts: 232
Loc: Ontario, Canada
http://www.autoblog.com/2014/07/15/nissan-alters-all-cvt-act-less-like-stretched-rubberband/

Many new CVT out there have the shift sensation or shift logic built in to mimic automatics.

I am just wondering, would this generate more wear and tear on the CVT in the long run?

Top
#3425440 - 07/15/14 11:54 AM Re: CVT with shift sensation [Re: wing0]
sasilverbullet Offline


Registered: 08/22/04
Posts: 1208
Loc: San Antonio, Texas
Don't know, but my brand new 2014 Civic seems to have shift points.
_________________________
14 Honda Civic 4dr EX-L-M1 0W-20 & WIX XP
14 Honda Accord 4dr EX-L 4cyl-M1 0W-20 & WIX XP
02 Chevy 5.7L van-GTX HM 10W-40 & WIX filter

Top
#3425452 - 07/15/14 12:10 PM Re: CVT with shift sensation [Re: wing0]
4wheeldog Offline


Registered: 04/23/12
Posts: 1454
Loc: East Mountains, NM
If the ECU is smart enough to vary the ratio shift points, it should not cause any odd wear. If it always shifts at the same ratio, I am thinking it will eventually "Notch" the cone.

Top
#3425465 - 07/15/14 12:22 PM Re: CVT with shift sensation [Re: wing0]
Miller88 Offline


Registered: 04/09/08
Posts: 11853
Loc: Onondaga County
I can understand the concept of a CVT.

But doesn't programming in gear ratios kind of defeat the purpose?
_________________________
I don't have nice things for a reason

Top
#3425477 - 07/15/14 12:31 PM Re: CVT with shift sensation [Re: Miller88]
4wheeldog Offline


Registered: 04/23/12
Posts: 1454
Loc: East Mountains, NM
Originally Posted By: Miller88
I can understand the concept of a CVT.

But doesn't programming in gear ratios kind of defeat the purpose?


People are used to the feeling of torque from flywheel effect when the transmission shifts, so CVTs make it feel like there is less torque, and the "Rubber band effect" is the lack of that kick in the butt. It is a matter of perception, not an actual performance issue.

Top
#3425501 - 07/15/14 01:11 PM Re: CVT with shift sensation [Re: 4wheeldog]
leeharvey418 Offline


Registered: 08/05/11
Posts: 734
Loc: Southeast Michigan
Sooo....

Doesn't that kind of defeat the purpose of a CVT? crazy
_________________________
2014 Mazda CX-9 Touring AWD
2016 Mazda6 Grand Touring

Top
#3425507 - 07/15/14 01:16 PM Re: CVT with shift sensation [Re: wing0]
901Memphis Offline


Registered: 08/14/10
Posts: 12008
Loc: Northern Kentucky
We don't need CVTs. 9 speed automatics can handle everything.
_________________________
2002 Buick Century 125k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980
1998 Nissan Altima 335k - 5MT - M1 HM 5w30/Fram Ultra XG7317+MOS+ATP 205

Top
#3425508 - 07/15/14 01:19 PM Re: CVT with shift sensation [Re: leeharvey418]
d00df00d Offline


Registered: 10/20/05
Posts: 10422
Loc: PA
Originally Posted By: leeharvey418
Sooo....

Doesn't that kind of defeat the purpose of a CVT? crazy

Yes. Completely.

Discrete ratio programming on a CVT is one of the most blindingly stupid features I can think of. It blows my mind that people actually want it.
_________________________
2011 Mazda RX-8 R3
Castrol GTX 5w-20

Top
#3425511 - 07/15/14 01:29 PM Re: CVT with shift sensation [Re: d00df00d]
JHZR2 Offline



Registered: 12/14/02
Posts: 39512
Loc: New Jersey
Originally Posted By: d00df00d
Originally Posted By: leeharvey418
Sooo....

Doesn't that kind of defeat the purpose of a CVT? crazy

Yes. Completely.

Discrete ratio programming on a CVT is one of the most blindingly stupid features I can think of. It blows my mind that people actually want it.


+1

Just plain stupid. For all the comments in the MT threads from the pro-AT folks, then technology moves on and we get this idiocy.

Top
#3425512 - 07/15/14 01:30 PM Re: CVT with shift sensation [Re: wing0]
badtlc Offline


Registered: 06/08/06
Posts: 5036
Loc: KC
shifting CVTs are have more of a slushbox feel than a torque converter based ATX. They are just terrible all around.
_________________________
2007 Ford Escape XLS 2.3L ATX, Trop Artic 5W30, Fram OCOD, 145k+
2015 Chrysler T&C, 55k+

Top
#3425519 - 07/15/14 01:41 PM Re: CVT with shift sensation [Re: badtlc]
d00df00d Offline


Registered: 10/20/05
Posts: 10422
Loc: PA
When you buy an automatic transmission and demand shift shock, you're saying you don't want to be involved in gear selection, but you do want to be jolted every time it happens.

Think about what that means for a second. All the unsettling feedback, none of the control. It's tantamount to buying a machine the sole purpose of which is to poke you with a stick at random intervals while you're blindfolded.
_________________________
2011 Mazda RX-8 R3
Castrol GTX 5w-20

Top
#3425532 - 07/15/14 02:03 PM Re: CVT with shift sensation [Re: wing0]
IndyIan Offline


Registered: 09/23/08
Posts: 7900
Loc: Ontario, Canada
Maybe they could do the BMW trick of aural engine enhancement, and use the sound system to simulate distinct ratios?
I wonder as well, if there is some wear reduction on some part of the CVT by having many small steps in ratio change vs. a truly continous ratio change?
_________________________
07 Focus ZXW, 5spd manual, 168km VWB 5W20
06 CRV, 5 spd auto AWD, 284km M1 EP 5W30

Top
#3425534 - 07/15/14 02:07 PM Re: CVT with shift sensation [Re: wing0]
gregk24 Offline


Registered: 04/13/13
Posts: 5071
Loc: FL, USA
I think it's a neat feature to have for those who like the feeling of shift points. I really could care less either way, as long as it's reliable then that's all that matters, CVTs are not performance transmissions to begin with.
_________________________
2012 Honda Accord EX-L K24z3
46,xxx miles
PPPP 0w20 / Fram Ultra

2014 VW Jetta SE 1.8T ea888
25,xxx miles
Castrol Edge 0w40 / OEM filter

Top
#3425538 - 07/15/14 02:11 PM Re: CVT with shift sensation [Re: wing0]
Hokiefyd Offline


Registered: 06/24/04
Posts: 14498
Loc: Top of Virginia
Presuming that CVT reliability is good, and that they are perhaps lighter with fewer moving parts, etc, I think it's a great feature for those who want the sensation of gear changes. I like to feel the engine rev up through a gear, make a change, and then rev up again. It's part of how I'm programmed I guess.

But I don't feel the need to make those gear changes myself. My wife can't drive one anyway, and has no desire to, so why not give consumers like me a choice in how a CVT drives and feels? The great thing is it's ALL orchestrated with computer programming. You can have it feel like a CVT if you want to. I can have it feel like a traditional automatic if I want to. No change in parts.

More choice, more flexibility, more options...these are always good in my opinion.

Top
#3425548 - 07/15/14 02:20 PM Re: CVT with shift sensation [Re: 4wheeldog]
gregk24 Offline


Registered: 04/13/13
Posts: 5071
Loc: FL, USA
Originally Posted By: 4wheeldog
Originally Posted By: Miller88
I can understand the concept of a CVT.

But doesn't programming in gear ratios kind of defeat the purpose?


People are used to the feeling of torque from flywheel effect when the transmission shifts, so CVTs make it feel like there is less torque, and the "Rubber band effect" is the lack of that kick in the butt. It is a matter of perception, not an actual performance issue.


What is the flywheel effect?
_________________________
2012 Honda Accord EX-L K24z3
46,xxx miles
PPPP 0w20 / Fram Ultra

2014 VW Jetta SE 1.8T ea888
25,xxx miles
Castrol Edge 0w40 / OEM filter

Top
Page 1 of 5 1 2 3 4 5 >