Looking for a buggy project

[BrianG]

OK, I came up with the battery trays. I just have to either find a metal shop with a nice cutter and bender or do everything with a dremel and vice (ugg). So now I'm looking for batteries. The buggy as seen in the pictures above currently weighs 5.28 lbs. I plan on using a Neu motor with a kv ~2000 on 4s Lipo, total gear ratio of 11.1:1. I was looking at the Maxamps 7.4v 8Ah packs, but am not sure if those will be big enough to get at least 30 minutes of racing runtime.

As a comparison, my BL Revo gets 14 minutes of track runtime using 14xGp3300 cells. The Revo weighs 10.78 lbs loaded with batts. That's an average current draw of 14.14amps. If I were to use 8Ah packs, the runtime should be around 34 minutes.

I'm thinking the buggy will (hopefully) be lighter and therefore require less power to accelerate/run, but I thought I'd ask the experts here. :)