http://www.horizonhobby.com/webapp/w...pe=productgrid

They also make a version for Futaba.

If you really want linear control, you need to use a wheel on both ends....I did this years ago on my EMCs...looks cool, zero change in cable tension through out the travel, and pretty much zero difference in control feel/response after rates/expo are dialed in. It does eliminate any side to side movement of the cables, so it is easier to make clean exits without the cable rubbing.

Regards,