New Savage is cutting out durring accleration.

[tittelba]

Hi,
My new brushless Savage is cutting out when I try to apply fast throttle. It's almost as if the ESC is cogging but I don't think that's the problem. My set-up is as follows:
MambaMax ESC w/ UBEC
2-2S2P Lipo (2-8000mAh MaxAMPS)
Feigao 540C 8XL
13T/47T gearing (started with a 15T pinion)
Weight: 13lbs
Temps have been below 120F.

If I slowly give throttle the truck will continue to response proportionally without suturing or stopping. But if I give quick trigger pulls the truck will usually jump forward a few times and stop or if I get it going by starting off slowly it'll sometime studiers when it hits 2nd gear.

What could be the problem? These 8000mAh MaxAmps should be able to keep up with the high amp draw and I've seen a lot of other brushless Savages with a similar set-up as mine. :002:
Any ideas?

Thanks,
Tom