man i want one of these, will my 1512 fit of is it way to big for the .5?
A 1509 size motor is plenty for a CRT.5. A 1512 would be more suited for 1/8 buggy. As BOR said, the pack is 4s and is very light. And yes run times are awesome. It is probably a little more now, but when I weighed it with the Lehner motor in it, it was sub 5 pounds.