I am not very good with 540 sized small can motors, so I need advice here. I have a Hammer that has been converted over with a Graupner Jet drive. I have two motors for it that I have played with and have seen little difference in performance between the two. One is an Epic 19T single mod motor with 30 degrees of timing in it and the other is a custom built (well balanced too I might add!!!) 13 turn single from Todd at http://www.putnampropulsion.com/ which runs a more conservative 17 degrees timing or so. I run 6-8 cells with either motor, however with the 30 degrees timing in the Epic, it doesn't last long between brushes and needing to be turned on 8 cells. Apparently, the lower timing, less wind motor seems to be more effecient than the higher timing, more turn motor/ However the more timing in the higher turn motor is making htem run about the same- am I correct here?

What I really want to know is what do you think about cranking the timing up to 35 or so on the 11 turn motor and running 4 cells instead of 6 or 8? I am wondering if the weight savings coupled with the more aggressive timing will make the boat faster than the current setups? If so, would it be sacraficing motor life from the timing advance even though I am dropping the voltage? Probably kill runtime too I would imagine. Any advice would be appreciated. Thanks.
Joe