You are right about the flats. I’m between 190-200 lbs, and I have no issues with the space cell and carvOn combo on flat. The hills become the issue, even medium to small hills.
@Namasaki it’s awesome to see you’re taking on 10% grade on hubs. I have a couple monsters like that just outside the dog run.
Do you know how many amps you pull on 6% grade?
Mucho gusto @AbrownMN!
Your build was a huge inspiration. Do you know how many amps the 12S3P will draw? Are you still going with that monster 25 inch enclosure? Will you have to make any mods to get it to fit the Vugenhausen?
Not sure about 6%. I’ve only tested the amp on the 10%. We also have a longer hill that is about 3.5% grade and I can fly up that one easily at 20-28mph The 3.5% is at the beginning of this video.
Have the 180 pounders hit any hills with this bad boy?
The new space cells states the following:
Space Cell PRO3
Pack rated to peak output of 60AMP, However incorporates a 40A Fuse for protection
Space Cell PRO4
Pack rated to peak output of 80AMP, However incorporates a 40A Fuse for protection
Am I right in assuming that’s 20 amps per motor now?
When you say:
My soltuion is I am going to up my amps to 25 per VESC, and I hope this helps.
Are you modifying the space cell to get 25A per VESC or do you have a different battery pack you’re using to get 25A per VESC?
Also, you mentioned you ran into issues even on small hills. Can you give any more details on small hills? My main route has at most 6% grade according to findhills (although it feels steeper in the real world).
I had issue on 7% grade hills, I make it up one and then by the second, it starts dying down. It sounds more like heat, but Chaka this it might be the amp limit, since I should be drawing more amps than 15 per motor to get up that hill.
About the space cell, I am in the process of all of this, hopefully I will finish in a few hours. But I am wiring around the bms. If I still have issues after this mod, then I will know where the problem is, which would be heat.
Either way, more amps is preferable.
Glad to hear it man! I tried to be very thorough so far to help others out in the future…So far I am going to work with that enclosure and see what I can do. Ultimately, I will end up with a custom CNC wood enclosure most likely. As soon as I get the enclosure I can comment on if I will need to modify it at all, but I have a feeling that it will basically sit perfect on there given the boards shape. We shall see! Getting everything else this week or early next week hopefully! I believe the setup is rated for 30A continuous and 80A peak power.
@Namasaki I see you’ve stepped up your game in choosing the music track for your video. Great choice!
This video has been really helpful. The terrain is pretty similar to what I’ll be dealing with.
Can’t wait to see the board with the enclosure on it.
Based on everything I’m hearing, it seems like the flyweights and bantamweights are the only ones having success with 10S + Carvon’s Dual Hubs + Hills.
I guess when it comes down to it, I could either go on a major diet or jump up to 12S.
I’ve decided to go with @torqueboards 12S3P pack since I’m not a fan of cutting weight.
Thanks, glad you like it. It was my first attempt on a real video.
heat is a problem, but it is not THE problem…
You have a set of motors that are designed to operate at a top speed of 106km/h (66mph) when powered by a fully charged 10S battery
If you are not operating them in their optimal RPM range they will be very inefficient, using more power than necessary & generating lots of heat…
Drive trains should be designed to deliver a useable top speed. You want to try & keep the RPM in the optimal range to get optimal performance whilst reaching speeds you can manage. This is the problem with hub motors…
Example: I don’t like riding much faster than about 45km/h, mostly because it’s not safe in an urban environment. So I design my drive train to reach a max speed of approx 45km/h. When I am riding I ride at top speed when possible. When I approach a hill it’s at top speed. I have maximum RPM, maximum momentum, This is how electric skateboards (motors) like to work.
Let’s put it in perspective, The drive train I use for my systems Motor pulley 15T Wheel Pulley 36T Motor 190kv Battery Nominal Voltage 36v Wheel 83mm Why do I use this setup? Because top speed is around 45km/h…& that’s the speed I want to ride It makes sense. right?
Now If I swap the motor to a 450KV motor… the top speed is now 106km/h… it wouldn’t make sense, there is no advantage. There is not a single person on this forum that would agree that using a 450KV motor is a good idea.
The expected issues of using a 450kv motor on my skateboard
- Very poor starting performance
- Very poor hill climbing performance
- Very high current draw at low speed, High current peaks whenever loaded.
- Battery discharge problems, reduced life expectancy.
- ESC Problems.
- Overheating motors.
Increasing voltage Using 12S battery on Carvon hubs won’t really solve any problems, It may actually stress your motors more. Your top speed now is 126km/h (79mph). The motor RPM when “at cruising speed” is now even lower than before. The higher voltage will simply make your motors want to spin faster, However, they will not necessarily be able to if they don’t have enough torque in that RPM range to reduce the load of the rider. The load on the motors & the torque output at low RPM is the problem Because torque is current you will need to pull more current until the load is reduced, which won’t really happen unless you reach the optimal (higher) RPM range, which won’t happen either. So your hill climbing performance probably won’t improve.
If anything, it might actually make sense to use lower voltage on Carvon HUBS. 6S is probably better suited. It may actually be more efficient.
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I don’t dispute your argument. but ride them and try. Even if the science doesn’t back us up, they feel really good. The larger wheels with a tad sponge to absorb some vibrations feel great. Check out this video to see a sneak peak of what they can do, including starting from a standstill. (btw, yes this is slow riding, I’m by no means pushing its speed limits)
At the end of the day, we need to get away from math and numbers, and just ride… That’s the only way to know, right?
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For what it’s worth, I’m thinking about getting both the 12S3P and the space cell to test them out in the real world.
I’ll see which one works best for Jobby Lane and use the other to start a second build 
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Most of the recent builds I’ve seen for Carvon V2 have used VESCs. Have you had any experience with the VESC as well?
How do you like the 12S ESC?
I might be wrong about this but I thought I was seeing people really like the Carvon V2 + VESC on FOC setting to reduce the amount of motor noise. Does your board run on the loud side?
I run mine so far without FOC. I personally like the noise. Sounds bad ass 
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I haven’t tried the Vesc. But I’ve been told that the Vesc can’t handle as much current as the TB 12s Esc. Although the TB isn’t as fine tunable as the Vesc, it can be adjusted enough with the program box so that it does fine. And a plus is that you can take the box in your pocket and make adjustments on the road. There is no quiet mode with the TB. And the motors sound like little jet engines. It’s a real head turner! Check the out the beginning of my video, you can hear the motor scream. It’s not as easy to fry the TB as it is with the Vesc. And you don’t have to wait months to get one. The Vesc is good if you want quiet or your using the space cell because of it’s limiting ability and if your riding mostly flat terrain. If you live around a lot of hills like I do, you might want to go with TB’s and 12s lipos
Holy…that board is a beast! (Mean that in a good way) Bravo!
Jobby Lane needs to be a stealth mobile. I’ll stick with the VESCs so I can use the FOC setting.
I might have to try the Vesc myself eventually. It just has so many features. There’s times that I would prefer the stealth mode like riding back and forth in my neighborhood. Some of my neighbors are a bit too persnickety. And now there’s a new development with the Vesc that you can connect a Bluetooth module and use a smartphone app to adjust your Vesc settings and have realtime monitoring on the fly. This is HUGE!!!