Originally Posted by
Trevor Williams
If I were going to buy a 17.5 it would be a Schuur Speed.....hands down.
I own the d3.5, the Sonic and the schuurspeed. I could never get the schuurspeed to be as fast as the other to. I tried all different gearing and timing. The Sonic with it timed to the silver cap screw and geared at 29/72 is dam fast, just as much as the d3.5.