HV vs 9L

Hello all

I am sorry if this has been answered before, but I am new here and have not yet found the answer. I was wondering how much faster the 9L/9920 would be over the HV in an E-Maxx. Exactly how fast do they run. I know things can big time depend on how I have my truck set up. I am looking for generalities. Also if ya'll think there is some thing better let me know. I plan on running mostly 12 cells with the occasional 14 and do not want to spend more than 300. This includes getting a heatsink.

[crazyjr]

I have not run a brushless setup yet, but everybody here prefers the 9L/9920 combo over the HV. The HV has some issue with overheating even with proper gearing. As far as speeds go, mike is the one to ask

[Serum]

The hvmaxx is nice, if you want a bit more than stock. the 9L/9920 combination is way more powerfull. the hvmaxx is running around 30-35 mph, and the 9L can be geared for mid 40's on 14 cells.

The 9L can take the maxximum available power from your batteries (batteries use to be the limmit in a setup, a setup can't be any stronger than the power the batteries can deliver)

The ghost stories of the sensorless setups cogging badly belongs to the past. Now a days, those sensorless setups run silky smooth, with neglectable cogging.

For 12-14 cells you also could take a lehner XL2800, though this is a bit above your budget (the 9L has got more torque bytheway.)

Considered your budget, and amount of cells you want to use, i would personally take the 9L 9920 over the hvmaxx without a doubt.

You might start giving your finger some lessons in being carefull onthe throttle, because the 9L is able to ruin stock diffs and get your driveshafts twisted. if you want a setup that is milder on your drivetrain, get the hvmaxx, it will result in a less powerfull truck however.

With that 2800, what speed control could I use? If it is the 9920, I could just get the 9L now and the Lehner later.

[coolhandcountry]

If your really want to fly and have awesome power. You could step to a 7xl with the 9920. I don't know how fast you want to go. Or what your truck may weigh. My brother runs a 8l on 12 cells on his emmaxx. It is a big difference form hv. It is harder on the drivetrain though like serum said. I had 7xl with 18 cells and i'm pretty sure i was shooting in the 50s.

Well I have two e-maxx's one is mostly stock except rpm stuff and the other is an extended aluminum chassis with cvds etc. I don't know about idlers or diffs because I just got it used from someone. Oddly though, it seems to weigh less than the mostly stock one. I would like to go as fast as possible but like I said, I don't want to spend more than 300 right now you know 310 320 would be fine but not much more. So it sounds like the 9920 would be a good contoller for now and I could upgrade motors later. 80 bucks a motor doesn't seem too bad to me.

[coolhandcountry]

I think mike sells the 7xl for 85 i believe. $5 more than the 9l.

[Serum]

They are 90 dollars, and that 7XL works really good on 14 cells! (dafni uses it in his e-revo, and he got rid of his thermal problems (motor got a bit too hot in his opinion.)

on 12 cells my choice would be a 9L

for 14 the 7XL is a very good choice.

[coolhandcountry]

I will say that if you get the 5mm shaft. Mike has the best built pinions for them. I have tried different ones and mikes makes theres look wimpy. Either way with the 9l or the 7xl. You will see more power than a hv maxx set up.

[RC-Monster Mike]

Serum spoke my mind almost exactly(seems to be a habit of his!:)). The 9L is awesome for 12-14 cells, while the 7xl is better suited to 14-16 cells. The 7xl will run excellent on 12 cells, too, but 14 is just about perfect for this motor. Either one, along with the 9920 controller, will easily outperform the Novak.