RE: MagnumR dolly
The dowels work much better. The problem with the pin is that it was too short, the tail of the plane would come up, and the plane would come off the pin before it was ready to fly. The pin was also scratching up the bottom of the plane bad. So with the longer dowels, the plane sits on the dolly longer, and gets away very clean. Plus the dowels won't scratch the bottom of the plane up.
I don't know exact speeds for how much its slowing down, but it slows down good enough for me. My biggest problem is getting the engine to quit when I want, it takes it a while to finally shutoff and then I am coming in too hot. I am learning to let it die further out, and depend on the glide.
The guys at the field today thought it was doing about 120mph. I will be ordering the 8x8 props tonight, but I probably want use them until I get a few more flights under my belt.