jhautz, just the man I was looking for. As I said, I'm going to be putting this into my Muggy and it comes in a just under 12 pounds. I'd really like to go with the 1512 2.5D or 1.5Y. The 1000 rpm/v should make that much of a difference.

The 1515 was my knee jerk choice, but I don't want more motor than I need. I'll just wind up with more of a current draw than I have to live with.

So...are you saying that on 4S, I should go with the 1515 2200kv motor? Or do you think that the 1512 2000kv motor will do nicely on 4S. I do like fast, but want a setup that I can race on the track too. Perhaps the 1512 1900 or 2000kv motor with 4S for the track and then I can run it on 5S when I want to go fast.

Thanks for all of the input guys.