The HvMaxx will run much hotter, have shorter ru times and rev like mad on 12cells- 60-70,000 I believe = not good. The 9xl will run cooler, run longer, have more torque which is good for a heavier truck setup, and you have the option of adding up to 16cells or more with the right esc. The HvMaxx by comparison will only take up to 14cells, doesnt have as much torque since its a shorter motor, and will struggle with a heavy truck setup (I should know). In a light truck though- sub 10lbs - then the HvMaxx is an option, I have seen videos of it in action and it is impressive. What does your truck weigh at the moment with the titans and 12cells on board?

My neu 1515 2.5D (1700kv) seems to work well in my e-maxx on 14 cells geared 12.5:1 :018: After a race the motor was 36 degrees C (97 F):027:
I have only used it like this a couple of times so far and I didn't expect it to work so well. Still has good accleleration, low motor temps, lower esc temps than with 7xl geared for about the same speed (high 30's), and runtimes seem as good if not better.
But I didn't buy this motor to use in this setup, it could end up staying though.

Well The only thing I have is rear traxxas bulheads and 14 cells. So I would say 12 to 13lbs. Im surprizes nobody has this setup with pics or videos.

I have the hv maxx 4.5 that beats a 8xl mm.we used the exact same batts.true rc 8000 4s lipo.My truck is about 3mph faster and the acceleration is exactly the same.our trucks are the same weight also.my truck has also beat a 4s quark w/ neu 2200kv motor not sure which one but I know the kv.my truck is 10lbs 4oz and it runs great.the only race i lost was a lehner 1940 9 w/a quark and 5s 8000 mah true rc batts,but he didnt beat me by much.to sum this up Im glad I bought the novak I beat the crap out of it and it never gives me any problems.

#12 - what kind of run times do you get with the 4.5 compared to the MM/8xl? I would assume that the MM/8xl would get a little longer, but don't really know...

Thanks

The run times are about the same.It also doesnt get any hotter than the mm 8xl combo.The only way you can tell the difference in performance is if you run them side by side.If you take them out seperately they feel the same.The mm is nice because you can program w/laptop but once your done you really never change anything.I got my hv for 300 and my buddys total was around 215,so if it came down to money the mm is the best combo for price only.

The 8XL/mm combo is also a bit more forgiving for gearing issues from what I've heard of the HV...

BrainG I just read in the traxxas fourm that you have a 10xl on 14 cells hoe does this run?

He is actually running the 9xl.
http://scriptasylum.com/bl_conversions/

Yeah, I went with the 9XL instead of the 10XL. I recently fried the 10 from running unloaded due to a silly center diff. Grrrr. Other than that, it runs just fine.

How many cells? And any videos?

14 cells, and no videos.

still; The kv of the novak makes no sense at all.

I am sure that the 8XL is faster than the 4.5 with the right gearing and good batts.

the kv is unloaded.I almost didnt get the novak because of all the people on the forum saying how bad it was.the strange thing is I dont think these people have or saw a hv 4.5 run.I got a good deal on the novak and said what the heck if I dont like it I can put it on e bay and get my money out of it.out of the 4 trucks I run with the only one that beats mine is the lehner quark 5s combo period.mine is faster than the 8xl and he has tried different gearing combos.I beat the neu quark 4s combo but it is very close,and the run times are all about the same because we all use the same batts.I know its hard to believe but its really true.Sorry:005:

maybe you're just a better driver than the others. :005: