That battery would be just about perfect. I think the Kyosho spur(in the link above) is a direct fit for the LSP diff. but not positive. It will quiet things down if your anti-racket but the stock spur would work fine as long as you get one of Mike's hardened pinions and don't mind the noise. As far as gearing, I'm not a hot bodies guy but I would imagine with the KV of the 10L being around 2400 that you would probably want to go as low as 13 or even 12 with the stock spur. Probably as high as 14 or 15 with the Kyosho spur. Check out the "What's your runtime" sticky thread in the brushless section of the forums. I think there are a couple of guys with HB set-ups listed in there.
Okay so i've ordered the Kyosho 46 tooth spur gear and a 14 tooth pinion. It seems like a lot of people are running Feigao XL motors, am i going to burn up my 10L with this setup? I have been using a 10L in my e-savage just fine for months now and that weighs a lot more than my lightning does. Also if i decide to go with the Maxamps 5000HV 14.8 pack what will i need to set my MM cutoff at? Thanks again.
I've never owned an L motor but if it's been pushing an e-savage around it should'nt have any issues with an LSP. Most guys run XL's or equivalent but I've read about several truggy's that run well on L's or 1512's. On the voltage cutoff, imo, 3.0 volts per cell would be best. You can actually go as low as 2.7 but that leaves no room at all for slightly out of balance cells; @ least 12 volts for safety's sake.