after being interested I decided to take one apart
Thie one about shows the small port bottom right small hole.
The big hole is where the blunger type thing goes which has 2 holes in its sides
The plunger enter into where the bolt from caliper goes into it.
Pressure from the brake fills the plunger and this spring controls how much pressure is applied.
This is a picture of both sides the plunger( thats what I'm calling it) would be fited in the top piece and it has an oring that slip fits and only allows a limited travel. notice the wear mark on top of the plunger, that is where the sleave from brake caliper bolt pushes it and activates the TRAC.
What I have come to believe with my limited knowlefge of this is that, the trac if not maintained and cleaned thouroughly will not perform correctly and that is why some many don't notice a differance when they change settings. THis is just my speculations and I can not base this on nothing more than taking it apart and making assumtions
Ride Safe, Ray:waving:
Here's the link to larger photos I took, by the way this was a junk slider and when taken apart the trac was full of crud:shock: