Endless Sphere

Yeah, I would stay as far away from them as possible. I had multiple very poor experiences with them and ended up just accepting the money I lost and moving on. This pretty much sums it up: https://www.radicalcreation.com/forums/ ... ?f=24&t=46

Hello, I am in the process of designing my own BLDC motor and I had a few questions regarding magnets. Does anyone know what the grade of neodymium magnet normally used in small rc motors? I have been looking at some charts comparing the grades and I think that N48H would be a good balance between s...

Very nice! Those look great!

Very nice build, thanks for sharing! I recently built a home foundry and have been playing around with casting. Perhaps I will give this a go.
Cheers!

Hello, I am working with some A123 26650 Cells and I am trying to find a high quality robust charger. I was using this one here: http://www.batteryspace.com/Smart-Charger-5.0A-for-38.4V-LiFePO4-Battery-Pack-110-240V.aspx I thought that it was a high quality charger, but it ended up catching fire/smo...

What kind of current are you pushing to the motor? You may notice the board begins to feel sluggish after a few minutes of riding as the VESC will most likely overheat and start limiting the current to the motor in that enclosure. I would recommend installing an external heatsink that contacts some ...

Very nice!! 100 amps sounds juicy! I'd be curious to see what kind of heat those fets throw at that current. Also, do you have a price range in mind for these units when you are finished? Keep us updated!
Cheers!

Very nice! I look forward to seeing the thermal performance on these! Where do you get the smd placement done after you order from oshpark if you don't mind me asking?
Cheers!

Sorry for the long silence. I have not made much progress recently as other things have come up. I left off with the Bluetooth and programming a menu system. I hope to finish both up in the coming weeks when I have some free time. I will keep you guys updated as I make progress.
Cheers!

overclocker_kris wrote:UPDATE

Enertion has now gone out of there way to get employees in on there days off to get my refund sorted as quickly as possible. and are communicating with me very well abut the situation. so good on them for that.

They probably saw this thread.

I like where this is going. I myself have been looking for a connector that can handle all wires going to the motor. Perhaps a more flat design would be better? Also, could there be interference on the hall wires from the large currents in the phase leads being that close?

Cheers!

I have also had several similar terrible experiences with enertion and will not be buying anything from them ever again. First I waited months for my VESC order after being told time and time again that they would be shipped the following month. The final straw was when they actually took my money f...

Sooo good! Can't wait!

Yeah, I am using a laptop but it was also charging. I think my laptop has protected USB ports but I have heard of people frying them when a backflow like this occurs. Do you know why the anti-spark would turn on partially? Also my anti-spark sometimes stays on even when the switch is in the off posi...

Hey guys, I've been playing around with some things on my build and noticed some strange things going on while charging. When I connected the charger, the anti-spark switch turned on partially allowing the VESC lights to come on. I eventually realized that this was being caused by having both the ch...

Hey guys, I have been playing with different materials for wheel hub pulleys for the ABEC Flywheels and I have finally found the perfect place to get them made. Shapeways is an online 3D printing service and for about $20-$30 a pulley, you can have them SLS 3D printed out of their "Strong and F...

Doesn't look that great or different to me. Everything looks pretty amateur IMO.

I've had several very bad experiences with Enertion vescs. I have bought a total of 4 vescs from them and two died after a day of bench testing and two others had dead DRV chips on arrival. They don't respond to their emails or support contact forms and their prices are fairly high. I would stay awa...

Hmm, this is an interesting point. So if you were to make a different board layout, you would have to share it. I know a handful of designs that are modified that have not been shared lol.

Hey guys, I'm working on a motor dyno to test motors and generate power, torque, and efficiency curves. It will be arduino based and will use VESCs to drive/brake the motors. I have started a build log on my site but will update here if you guys are interested. https://www.radicalcreation.com/forums...

Very nice design work. I am still working on the BLE firmware updating on the other thread but there is a lot to it. Are you planning on keeping this RF based or are you going to switch to bluetooth? Also, I would highly recommend a hall effect based throttle control as those small pots can send fal...

same thing happened to my APS switch 2 weeks ago - stuck on ON position after a few weeks of normal use. was particularly bad for me, since my battery isnt protected by a low voltage power cutoff BMS, so it got discharged to 2.0V/cell cause I didnt use the board for a while. Dang that sucks. Yeah I...

Holy shit this thing is going to be a monster. What kind of range are you expecting to get with all those lipo's?

I got it from APS but it is the same Chinese one most suppliers sell.

Hello, I have a generic anti-spark switch like the one from torqueboards or alien power system and it seems to have gotten stuck in the on mode regardless what position the switch is in. It is new and I have not even ridden with it, only bench testing so far. The problem began after I charged my boa...