Originally Posted by mx_599
i am surprised some of you know about the control tech seat post. i thought it might be junk. but gastro seemed to think it was decent as well.
there is one other company i am aware of that uses a similar design. BRAKE THERAPY i think. don't scare me like that! i imagine that it does put torque into that arm. however, i just don't see it shearing the boss off. i have heard of that as well. i asked the guy at WOOdman and of course he said they have not had problems. he did seem sincere.
i do not think brake force alone will do anything. it doesn't take much for the back to just lock up. the only thing i can think of is if you nailed the bracket just right from below and it pushing up and rotating forward snapping the rod.
i admit, its not for everyone. obviously i wish the frame had brackets. think about it though. the same scenario i mentioned above could shear brake tabs off as well.
overall it seems very solid. i am only about 135lbs, so i am not too worried about it. i think it would take a nasty crash or perfect hit for something bad to happen.
The guy I know who sheared his off was about 165, and had the Brake Therapy adaptor. THey use the same basic principle; the adaptor has the potential to rotate around the rear hub [even though it doesn't], allowing the braking forces to be transmitted along the shaft to the brake boss. If it didn't, the whole contraption would spin around the rear hub whenever the brakes were applied. Regardless, at your weight, the rear wheel will skid on dirt long before enough force is being applied to the boss, so I wouldn't worry. I would probably avoid laying down big skids on super-grippy surfaces like slickrock or the like. Watch for cracks on the boss as well. Don't mean to scare you, but this problem can occur, so keep an eye out for it.
