Ebikeling Hall sensors failed - repeatedly

[Plissken]

So I built my ebike 2 years ago. And I have gotten hall sensor failures twice. I cannot afford to keep replacing my motor every year. I need some recommendations on new motors, or a new controller, or something. Can I try a sensorless controller, and keep my current motor? Would I have to replace both the motor and controller? I'm trying not to spend a lot of money on fixing this again. The last time it happened I could not find a replacement motor by itself, and I was forced to buy the entire conversion kit again. Now I have 2 full ebike kits with 2 broken motors. I'm not going to replace it with the same thing again, as this kit is obviously trash. I would like to not spend a ton of money, but I will do what I have to do to make sure this doesn't happen again.
This is currently what I am using:

Amazon.com

 

[Frogslayer]

Damn it seems like a sweet unit. I don't ride in the rain all that much but my cheap violamart kits have been going for a few years now with no problems.

 

[HumanPerson]

Yeah i've ad no probs with me voilamart 1000w or 1500w motors.
I've rode in the rain and snow and puddles with no harm so far.

Ride Safe!



HP

 

[Plissken]

Mine is a fat tire bike. Maybe should have said that to begin with.

 

[barbegame]

Hi! If you can, open the motor and change the hall sensors yourself! these are cheap! but the work is difficult as I saw in a video (youtube?) I would say delicate is a more appropriate word!
BTW your fat bike is impressive!

 

[T03Y]

How did you go? I just made my first post here, about how my bike seems to go fine without the hall sensors wired up?!

 

[barbegame]

Is it possible to go without hall sensors?

 

[Plissken]

Sorry about the late reply. I forgot all about this post. So here's the long awaited update...
First I replaced the whole conversion kit with the cheapest thing I could find. I actually managed to get a 48v 1200w front hub kit for $200. I simply put it on the rear wheel backwards. It had no chain sprocket but that is fine, my bike is not for pedaling anyway, and this was just a stop-gap. That gave me something to ride while I saved up some money, and then I stripped the bike down to the last nut and bolt, and rebuilt it with a Bafang 1000w mid drive BBS-HD. I never did manage to get those 2 broken motors fixed, I've been very busy with work. I have also recently started building 2 new bikes. One is another electric, but rather than just slapping a conversion kit on a regular bike, I build a purpose-built frame from the ground up. It has no pedals, it's basically a low power electric motorcycle. The other bike is built on a 1984 Honda XR-200R dirtbike frame, but converted into an enduro bike. I'll post photos of everything too.

 

[Plissken]

My old ebike, the one I had problems with. Still going strong, but looks like a whole new bike now.

 

[Plissken]

The enduro bike started as a pile of rusted metal. It's not electric, but I thought you guys might like it anyway.

 

[Plissken]

The new ebike has a lot of work left still, but here it is. I started with a old girls mtb that I found at Goodwill for $5. Chopped it in half with an angle grinder, welded some bits. Spent days searching for bearings the right size for the swing arm axle. It's coming along.