oh yeah, what lipo saver would I use for the 5s? I have not seen one for that many cells yet, not that I know of anyway! I would also like some gearing suggestions--again I'm just bashing, do not know where to race anyway! I would like to go fast and I am planning on keeping the 2 speed tranny to so low speed power and high top speed should be capable in one setup, that's what I'm hoping for anyway--Barndog says he gets 40ish with 16 tooth pinion, is that with the 72 spur?