CVT Transmission?

sniper_101 · Oct 18, 2011

Always wondered this, but any reason why a CVT (continuously variable transmission) hasn't caught on for a performance diesel application? Reliability and development being the #1 issue I'm guessing, but from the reasons I can think of, would open up a whole new world of 1/4 mile times and sled pulling.

I know Mitsu or Nissan used/uses it in one of their cars, (I think a Lancer or something), but from what I've heard, it sucks. So maybe the technology on them just hasn't progressed or been worked on enough for the automotive world yet. For all I know there isn't really such a thing yet, or is there?

Just wanted to see what others thought of this or if others pondered this before as well, etc. No time consuming shifting, no boost loss and keeping the engine in it's exact power-band . . . who wouldn't love that!

oke:

09stroker · Oct 18, 2011

It works. John Deere has them as an option on tractors.

sniper_101 · Oct 18, 2011

09stroker said:
It works. John Deere has them as an option on tractors.

Is that what their ProDrive system is?

I realize it has been used, but am wondering why it's not caught on for a performance solution/replacement.

09stroker · Oct 18, 2011

sniper_101 said:
Is that what their ProDrive system is?

I realize it has been used, but am wondering why it's not caught on for a performance solution/replacement.

I think pro drive is what they call it on harvesting machines. On tractors they advertise it as an IVT called AutoPowr.
I would think its because it would be very expensive as it would be a fully custom unit. Then you gotta think about tuning the damn thing lol.

wint · Oct 18, 2011

Id say that it hasnt been used since: 1. It would be so expensive. Its not a product for our truck market. So all the engineering and trial and error would consume a mass amount of money. 2. Idk if a system could be made for such a high torque/high performance application either.

SoCalPSD · Oct 18, 2011

Audi has successfully used them since 07 and Nissan has been using them for about 2 years. And they seem to be reliable but if anything goes it all goes. Cracked open over 40 and most needed everything but a case.

Fat fingered from the phone-Corey

PDT1081 · Oct 19, 2011

09stroker said:
It works. John Deere has them as an option on tractors.

Which they got the idea from Agco/Massey Ferguson.

Deereman4020 · Oct 19, 2011

sniper_101 said:
Is that what their ProDrive system is?

I realize it has been used, but am wondering why it's not caught on for a performance solution/replacement.

No the pro drive sorta is but the real CVT is the John Deere Infinantly Variable Transmission. thats on the tractors the prodrive is a similar setup but more for choppers and maybe combines.

sniper_101 · Oct 19, 2011

Deereman4020 said:
No the pro drive sorta is but the real CVT is the John Deere Infinantly Variable Transmission. thats on the tractors the prodrive is a similar setup but more for choppers and maybe combines.

Ahh gotcha, our 9870 has Prodrive, but 4wd tractors smaller than the 95xx series aren't common around here. No idea what they're equipped with.

wint · Oct 19, 2011

Id say something that would be easier to attempt would be a hydro drive. That could work decently but would be heavy.

Mike's Diesel Performance · Oct 20, 2011

Hydro drive would not be a good idea since hydros don't handle loads well at all. If anything a CVT or IVT would work but like what was stated when they do fail you cant just rebuild them. They usually just replace it and send the core back.

Sodbuster Jr. · Oct 26, 2011

sniper_101 said:
Ahh gotcha, our 9870 has Prodrive, but 4wd tractors smaller than the 95xx series aren't common around here. No idea what they're equipped with.

The 9000/9R series Deere's now all use the powershift transmission. The 8000/8R series down to I beleive the 7000/7R series has the powershift, autoquad or IVT transmission option.