I just ran today with my singlespeed in the 1/10 infinity truck and I love it. It is a little sluggish on the low even with the 13 tooth, but it snaps about a third way through and goes like a bat out of hell. my tires bulged as I drove down the street. I also cartwheeled a couple of times when I tried to slide a 180. I'm happy with it, but I'd like to have major tourqe off of the line. I probably gained about 10-15 mph on the top end. Thanks Dennis and Eddie.