[jhautz]

The 1512 in a buggy will be all the power you need. I have the 1512/2.5D and have run in my 1/8 buggy, revo, maxx and XLB 1/7. More power than the XL motors IMO. Its plenty of power for a track. You have no worries there. I would say its a btter chioce than the 1515, just cuz of the weight factor. How much does that setup weigh with the 8K mah lipo?

I'm wondering how your lipo is holding up with that battery mount. It looks really well done. One thing I have found is keeping as much surface contact as possible on a lipo is important. I had a similar setup for a little while where I was contacting only around the bottom edge and 1 smaller point on the top and all it took was 1 crash and I wound up with some significant dents in the lipo. Freaked me out and I discarded that mount an built something that touched the lipo over a larger surface area and also added some foam padding to the contact points.