Novak HV Maxx 4.5 Problems/Questions

[E-Revonut]

I have a G2R (I think, bought a used rolling chassis) running the Novak HV 4.5 setup. I have run 70/18 with no problems other than all it wants to do is flip over when I hit the throttle! I have upped the gearing a bit to 64/18 but had the same problem. I have actually pulled a complete flip on take off and kept going! I have now upped the gearing to 64/22 and am awaiting dry ground to test it. with 70/18 I was getting close to 30 MPH and 12-15 min run times on some cheapo 4500mAh 6 cell packs and pretty much the same with Venom 4200mAh 7 cells. If I burn mine up I will be waiting for the MMM as well. Good luck with yours!