IIRC it was a licensing deal, not a purchase. Pedersen got a percentage of sold units, can't remember if there was a disastrous minimum fee like with WTB products. They went into production at a time when Suntour spec market share was rapidly shrinking, so not many were sold.
They worked pretty nicely as rear brakes, but were a lockup liability nightmare for the front.
Originally Posted by
SJX426
Although these are labeled Suntour, they are also labeled as Pederson Self Energizing System brake calipers. Pederson sold his design to Suntour after introducing them to the market. You don't see them around much but they work well on a tandem. As the pads engage the rim, the caliper moves forward on a screw to increase the pressure. Originally there were front brakes too but Suntour didn't want to deal with the liability of the brakes not releasing or locking the front wheel. They are a challenge to set up but once they are set up right, they do perform well.
P1010340, on Flickr