CVT transmission

[reneepaiva]

Hi all,

This week I was wacthing some videos of engines working, and one of them was explaining too, how cvt transmission works. So i was thinking. This kynd of system in scale could be very cool to make one.
Reading about it, i found two types, with electronic control and totally mechanical.
For me, using electronics is very easy the project the relation control.

About the mechanical system, thats my objective, I think it works with some kind of centrifugal device.
Anyone here, knows this system?

tks,

 

[nemt]

[ame]www.youtube.com/watch?v=MhFK5gfAGpM[/ame]
[ame]http://www.youtube.com/watch?v=M9m1FmAoYWI[/ame]
Have a look at these two sites. Bosch has a very good explanatory clip on how it works. Nothing centrifugal.
It is a push belt. Invented by dutchman Huub van Doorne.

Enjoy.
Nemt

 

[dsquire]

reneepaiva

I believe that some snowmobiles use a type of CVT with centrifugal control of the CVT. This was from a machine I owned back in the '70s. I have no idea if they still use the same system or not.

Cheers

Don

 

[reneepaiva]

Nemt,

Thats right, it's a push belt to transmit power , but the centrifugal system that I sayd it's to change the gear ratio, open and close the pulley.
like this:
[ame="http://www.youtube.com/watch?v=uCEvBGT8twM&feature=related"]http://www.youtube.com/watch?v=uCEvBGT8twM&feature=related[/ame]