Hi 96RAF No they don't run at similar speeds as I said in my post, I can only run the class 59 at a speed of 10 mph but using a calculator I found on the web, this worked out at 88.6mph, if I set it any quicker I think it would come off the tracks. I can set the class B12 at 40 mph and this calculates to 45 mph, so close to the setting shown in Railmaster. I tested it on a 60" length of straight track. I only have the Elink. Both locos were tested on the same piece of track. I am not sure what you mean, (Do you have use scale speeds set in RM). I set the speed in the Locomotive Control window, where the throttle is. Sorry if I'm not clear, I'm fairly new to all this, I have only had my first loco running in the last month. Pete