Just wondering, I have read that the new 04 civics will have this transmission optional with the HX model.

Im not sure what this is and I know that other forums, people dont know as mcuh.
I doubt it would be possible to put this tranny in our cars. How does this thing work?

 

I believe it is similar to a Snowmobile or Polaris ATV..in the fact that it doesn't have gears, it has chains/belts instead..It constantly alters the *gearing*, in a matter which I don't remember right now.. something w/altering length or tension of belts..(someone throw me a friggine bone here.) Ill stop now, Im reaching

One of the new Audi's has a similar tranny as well.

 

http://www.askjeeves.com says


Gears (cogs) can only give a fixed set of ratios between input and output shafts. Continuously Variable Transmissions (CVT's) rely on pulleys, wheels, and/or cones that can transmit drive at any radius thus offering infinitely variable "gear" ratios, within limits.

The motor scooter drive (right, c2001) shows a drive pulley, left, a driven pulley, right, and a belt between them. (The "teeth" on the belt are only to improve grip; there are no teeth on the pulleys.) The drive pulley is in fact made of two cones which can be moved closer together or further apart. Such movement varies the radius at which drive is taken off the drive pulley. The driven pulley is similarly constructed and the two operate in cooperation to keep the drive belt taut.

The motor scooter system only needs to handle low power and torque. A similar system was used on small DAF cars of the 1970s; two systems were used, one for the left rear wheel, one for the right rear wheel, thus obviating the need for a differential because they could deliver different ratios to the left and right of the car.

Belts are all very well for low power systems, although they do need to be changed regularly. Some more modern, higher powered, CVT's use steel belts which are more durable. Others use conical drive and driven members with a steel intermediate wheel (not toothed) which can move to take, and give, drive at different radii.

The advantage of CVT's is that they enable the engine to operate at exactly the optimum revs for given power demands. Early CVTs were limited in power handling ability; as of 2001 they developed enough to be offered with 2.5 litre V6's of up to 130kW, as in the 2001 Audi A4

 

dsr is on the right track...

although its sounds cool...its not very performance oriented..

it very wierd driving...the rpms come up...and then stay in the sweet spot while the tranny starts to do its cvt thing!

anyways..its junk...dont think of swapping one in your itr cuz you cant bang gears to good...hahah

ep-who has posted 3 times tonight..

damn you bpR...

 

the new nissan suv has it. my coworker has it and might i add it sucks imo

but its great as its smooth in transferring power to wheels.

 

is it true you can't even feel it shift to the next gear?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TypeR 01 886 &raquo;</TD></TR><TR><TD CLASS="quote">Just wondering, I have read that the new 04 civics will have this transmission optional with the HX model.

Im not sure what this is and I know that other forums, people dont know as mcuh.
I doubt it would be possible to put this tranny in our cars. How does this thing work?</TD></TR></TABLE>

That's not really a big deal, since I had a 98 HX with a CVT as my first car.

It was great - I didn't know how to drive a stick yet, but the CVT lacked the slushy feel and lurching shifts of a conventional automatic. I only had 110 hp, and the car topped out at 115 (many times). It's not a performance-oriented thing.

Why would you want to put one in an ITR? I'm curious.

 

My gf has an '02 Civic electric-hybrid with CVT. You can't feel it "shift gears" like an automatic, because there are no "gear" graduations like you are used to (1-2-3), just "Drive."
Pretty good for keeping the engine at it's most efficient revs, but they still rate the manual transmission as getting better gas mileage...

 

i work at honda and that trans suxxx!!! theres no shifting and they break down all the time! i hate cvt... dont buy a hx! cvt is supposed to save gas b/c of no shifting!

 

My understanding (I read this somewhere rather scientific, but can't remember where now) is that the CVT's cannot withstand much power at all. i.e., they break down easily.

Just like the AWD integra (xsi???) tranny/differential: can't handle any amount of torque.