Infinitely-Variable Transmissions

[BigPapa]

What ever came out of the folks who were testing the Infinitely-Variable Transmissions (or whatever they called it!)? I remember they came on at the end of a transmission thread and said they had it in testing. Seems like it was some time in December? I did a search and couldn't find it.

 

[jandtjil]

Hopefully they are busy sharing technology with the guys building the Infinitely-Variable Torque/Horsepower engine.



JJ

 

[Big P]

I never saw the tread, but if that transmission ever became a reality it would be awesome!

 

[datablitz]

gm has a constant variable transmission, for which they just stopped production because of quality issues.



they put it in some saturn cars, and call it a cvt i believe

 

[Scot]

You could get one in a Yugo.

 

[bmoeller]

Deere and Fendt have both have IVT/CVT transmissions in tractors.

 

[mmclaughlin]

Audi has a CVT available - but they don't offer it in their all-wheel drive cars (not yet). It's suppose to be pretty nice.

 

[tbrudder]

I think there are issues at higher horsepower. Since it's basically a belt or chain connecting two sprockets whose diameter can change, well--I guess it's hard to make a disc that can change size and still hold up under a heavy load. It would be kinda weird to floor it, and accelerate while the engine stays at the same RPM and the transmission was running the ratio down.



--Ty

 

[jtwcummins]

CVT is on the Nissan Murano

 

[XJSuperman]

Would it be like the old "power glides". No real set gear ratios... . ??

 

[nickleinonen]

CVT's work pretty well, but they don't stand up well to torque. they will slip

 

[BigPapa]

The one I'm asking about had no belt or chain. The guy said it was done with gears. Man I wish I could find that thread!

 

[jrandol]

I remember that, that was pretty sweet stuff!! I'd be their test dummy if they wanted me too!!



Jeff

 

[Edward]

Well it's after one in the morning but I finally found the thread we all remember reading. It is first mentioned down the page a bit.



https://www.turbodieselregister.com...d=86758&perpage=15&highlight=CVT&pagenumber=6



Here is a link to the variable transmission web page.



http://www.transrevolution.com/





Edward

 

[thejeepdude]

So HOW can you have a gear drive with no slip device and infinite gear ratios? Sounds too good to be true! I can't wait until they go into production on that thing... definitely want to see how it holds up.

 

[BigPapa]

Thanks Edward!



I knew it was out there somewhere! Now all we need is a word of how their testing is going.



Scott

 

[DOUGMartin]

I checked the site it said they have been testing. I asked if my truck could be a tester lol.