1350kv...Why did I buy this?

[Havoc]

Before I damage anything else, I figured I would ask for some advice here. I hate my first post to be "Hi, I did something stupid.." but I have no choice.

My old Novak HV (it's a 6.5, but this was before they labeled them as such) was in my old 14.4 Emaxx. I decided to put it into my new Emaxx 16.8, but the factory heatsink won't let it happen. So, I went with a new Tekin solution, the RX8 combo w/1350kv motor.

My goal here was to make my Emaxx bullet-proof, maintenance free and something that would rarely need to be on the bench. I went with the lowest kv motor so I could gear it just high enough to get okay speeds, long run times and cool running electronics. Well, so far that is not the case at all.

What happens is the truck runs okay for about 2-3 minutes, then there is no power at all. It feels like a stock Emaxx running on a single battery. I am using two 7 cell trinity 4600mah nimh. I have 5 of these batteries and have tried a different set with the same outcome. I have tried a 15t, 17t and 21t pinion, all came out with the same results.

I just got some lipos recently, but haven't tried them yet. My concern is that this motor requires some serious battery power and I don't want to detonate my truck by smoking two Lipo's because I don't understand what this motor wants from me.

I have a new 2250kv sitting on my bench, waiting to be swapped with the 1350kv, but what could I even use this 1350 for? Do I need a 6s? I hear all these stories about people going to lower kv for more torque and control on a smaller track, but have I gone too far?

Thanks!!