Novak HV Maxx 4.5 Problems/Questions

[Patrick]

One cause of the problem could be that your waaayyy overgeared for the 4.5.
Someone who knows more about the novak's or has the manual might be able to tell you for sure, but I think novak recommended around 28:1 or maybe even 30:1 final drive ratio for the 4.5 on 14 cells. Yours is 15.6:1.
Check the HV manual to see if it gives you gearing recommendation.