This is the company, came across them because they are trying to develop CVT tranny's for windmills.

http://fallbrooktech.com/home.asp

Right now the tech is for HP below 7.5

The are also working on a fluid based CVT..

http://fallbrooktech.com/valvoline_THreadable.pdf

They have the "charts" but they also have people using their tech bicycles, carts and electric motorcycles.

Pretty expensive stuff, I think the kit is 595.

Tomatolord

I wish the first one had better pics. I want a look at this fluid cvt for atv's. I wonder if you could mate it to any motor or brand scpecific. Cost???

maybe if you went directly to valvoline...


it is a little odd that valvoline has a pdf on this relatively small company vs someone like honda or some other large atv mfg.

tomatolord

Not if they think this is the next big thing. Their not dumb so I would think they know something or just have a heck of a hunch

There are one-way clutches in machinery and office equipment that use the same lubricant. I have seen this transmission design before, but cannot remember where. I wonder what range of ratios you can achieve with this design...

Some web analysis shows this very intersting factoid..

http://www.greencarcongress.com/2007/12 ... targe.html

The second is the use of a traction fluid (Invaritorc), developed in partnership with Valvoline. Under normal circumstance and pressures, the traction fluid provides lubrication for the transmission. When the traction fluid undergoes high contact pressures under rolling contact—i.e., the contact point of a sphere on a cylinder as in the NuVinci—the fluid undergoes a near-instantaneous phase change to an elastic solid through which shear force, and thus torque, can be transferred.

WIth multiple spheres in the CVP (from 3 to 12), the transmission thus transfers torque through multiple fluid patches. This configuration allows input and output to be concentric and compact, with distributed torque transfer among the spheres. The result, according to Fallbrook, is the ability to sweep the transmission through the entire ratio range smoothly, while in motion, under load, or stopped.

The unique configuration of the CVP transmission allows for multiple power path configurations in which the device can be incorporated into a drivetrain. Some of these configurations can operate as a CVT, where input(s) and output(s) turn the same direction across the entire speed ratio. Others can operate as an IVT (infinitely variable transmission, where output speed can be reduced down to a powered zero state, and the output can even reverse direction

Tomatolord