I run that with the 7. 4 volts no problem with the volts drop on mine and I use a 2274 savox. At randy this past weekend I had a team drive set up my esc he tuned down a bunch of stuff in it. We hooked up a 23 like you said bad deal that turned out to be. My dean plugs like melted together. In like 2 minutes so we went back to the 19 it made it 6 minutes and 49 seconds before it shut down. So he is saying use a 17 for the car. He think it just reving on the straight to much. The straight is 180 feet about and with the 19 8 can climb pazt that easy and still get speed. So mybe over geared on the straight. He is not a tekin drive but does run tekin. He is an xray team drive. We got zome lousi guy coming out this coming weekend also. There is one other guy at might track that seem to have the same trouble as me with a different car completely and spectrum radio gear for his. We are trying everything we are told as a team. Any more input would be great.