glassdoctor,

I am definitely going with 4S. I've already ordered the batts. :) I was just really impressed with the performance on 3S. Oh why did I wait so long to do this? My 7075 is coming in today, so I'll get on making the final version of my mount. Doing all of this mill work on my drill press is less than ideal though. Boy, do I miss my mill. What I really want to do is mill me a mount that incorporates the rear center diff mount. That, however, is beyond me capabilities right now. I can't get that accurate with my drill press.

As far as the motor goes, I'm starting to think that I should have taken your advise in the first place and gone with the 2000kv motor. If/when I get the Neu motor, it's going to be the 2000kv. I just can't see going wrong with that on the track.

neweuser,

I was going to make my battery tray out of architectural aluminum channel, in fact I ordered it and it's coming today. My apprehension is with the tensil strenth of the aluminum that the channel is made from. It isn't even 6061, so I don't know how hard it is. Gotta protect those lipos. If the aluminum it too heavy, I'm going with the cf. No choice there.