Novak HV4400 and 7XL BL Sensored System...

[GriffinRU]

Originally Posted by crazyjr

I was thinking about a 7XL and no more than 16 cells or 5s lipo, anything more would be ridiculas. Before i do this i want to see if the HV is any competition for the nitro's around here as a new track is opening soon, If i get blitzed i will be talking to you.

Ok.

Just keep in mind, hv with feigao motor has different performance then stock HV-Maxx combo. It would be fair to say compare 7XL performance on 16 cells with tremendous amounts of torque vs. Nitro's.

Amount of starting torque, based on motor type of simular size (power):
Brushed - up to 1000%
Brushless sensored - 250-300% (up to 500%)
Brushless sensoreless - 20-35% (less then 50%)

Artur

[squeeforever]

Hey Crazy, on that many cells or on 5s lipo, for racing, you might want to consider like a 9xl. My 10xl on 14 cells is already to much for a track. I can't wait to go to 6S lipo but im sure I'll have to turn down my epa alot.

[crazyjr]

I was refering to max cells, probably run 12 cells or 4s lipo for racing

[Red350DropTop]

Well, I finally converted my HV-Maxx setup to a sensored 9L.

I had a very hard time matching the timing of the motors just based upon hooking up the motors. It probably has to do with the can size, though Artur didn't mention it with the C50 motor. I probably spent 2-3 hours testing amp draw. I got it matched pretty well I think.

It was very dark when I ran some GP3700 6 cell packs though it. I was running my HV at 12 66 gearing. I am going for cheap here, so I drilled out a set of pinions for the 9L (it is a C can with a 5 shaft) . I ran 18 70 for the 9L. Wasn't extremely impressed by the top speed as compared to the HV, though it was dark. Controller was warm after a couple of minutes. Tried some GP3300 7 cell packs and it really picked up in speed. After a few runs with it, controller wasn't too warm, but motor had picked up some heat.

The brakes are too touchy now. At this moment, I am using the traxxas radio, and coming off full throttle to brakes anything over 1/8 trigger = flipping it on the lid. Artur, how were the brakes on your setup? I have a MX-3, need to get crystals for it though, but I will have to change the EPA if I want to drive this thing. I was being so conscious of not trying to flip it over, I clipped a sidewalk and broke all mounting screws on the plastic skid plate and bent the ears of my T-Maxx frame down. :019:

The HV-Maxx motor is pretty heavy, if I decide I like the setup, I will take the heat sink off to try and save some weight.

[GriffinRU]

Originally Posted by Red350DropTop

Well, I finally converted my HV-Maxx setup to a sensored 9L.

I had a very hard time matching the timing of the motors just based upon hooking up the motors. It probably has to do with the can size, though Artur didn't mention it with the C50 motor. I probably spent 2-3 hours testing amp draw. I got it matched pretty well I think.

It was very dark when I ran some GP3700 6 cell packs though it. I was running my HV at 12 66 gearing. I am going for cheap here, so I drilled out a set of pinions for the 9L (it is a C can with a 5 shaft) . I ran 18 70 for the 9L. Wasn't extremely impressed by the top speed as compared to the HV, though it was dark. Controller was warm after a couple of minutes. Tried some GP3300 7 cell packs and it really picked up in speed. After a few runs with it, controller wasn't too warm, but motor had picked up some heat.

The brakes are too touchy now. At this moment, I am using the traxxas radio, and coming off full throttle to brakes anything over 1/8 trigger = flipping it on the lid. Artur, how were the brakes on your setup? I have a MX-3, need to get crystals for it though, but I will have to change the EPA if I want to drive this thing. I was being so conscious of not trying to flip it over, I clipped a sidewalk and broke all mounting screws on the plastic skid plate and bent the ears of my T-Maxx frame down. :019:

The HV-Maxx motor is pretty heavy, if I decide I like the setup, I will take the heat sink off to try and save some weight.

Very good news, I am hoping rock-crawlers will jump on this setup.

Yes , brakes are very strong. I set mine to 45% only.
You can easily remove heatsink (by the way good heatsink) from HV-motor and use it somewhere else.
Sorry for C50 hassle, I thought that i published picture on its wiring. It is quite different from feigao.

Artur

[Red350DropTop]

No, the C50 motor did not throw me wiring wise. I thought that the smaller can motors would be harder to match timing to the HV motor by just hooking them together, and I wondered if the C50 gave you that problem.

[kufman]

I have also made this idea work for a lehner basic 4200 and a novak 10.5 running on the old SS5800 controller. I haven't road tested it yet, but it works well on the bench. I did cheat and use an o-scope to get the gearing lined up.

Arthur, are you still running this?

whats new with the feigo motors?