Recent content by liontail

The Magnesium fork's dropouts look quite thick... but magnesium is a bit weaker than most aluminum alloys. My guess is this one will actually crack, not just spread open, and it'll happen at ~50 N-m. Stamped steel. Hmm... probably a generic "Hi-Ten" steel. I'll give it 70 N-m to full failure...

Thank you for taking the time to document this and make it publicly available, Justin! I've been somewhat involved in this project, but am continuously amazed by the time and care that you bring to the projects you take on. Seems that the torque arm failures are from the arm's teeth...

Hi everyone, I'm trying to get to the bottom of an issue I'm having with a Bafang BBS01, and I can't seem to get the bottom bracket spindle out. All of the instruction videos assume that there's a 4-tab nut on the outside of the unit. That's not the case with mine: What you're seeing is a...

It's impossible to really tell from your image, but your larger gear doesn't look worn like mine. Anyone else ever had a gear that looked like this, and experienced a weird feeling from the drive?

Hey all- I've been searching and reading through this thread in the hope of finding someone with the same BBS problem that I'm experiencing, but haven't found it. I apologize if this is a redundant post! My BBS system gives a shuddering/vibrating feeling through the pedals when the motor is...

Hey Dogman Dan - That's awesome feedback. In your test, are you saying you're running 14S and 22A max current? 1000W seems like a reasonable max. Thanks!

What is the maximum current (and voltage) that the standard moulded 9-pin motor connector can tolerate? I'm talking about this connector: I searched around on the forum, and got unsubstantiated answers between 12 amps and 30 amps. I didn't find any reports of a failure of this connector. I...

I bought a small geared front hub motor - I think it's a Bafang - from a chinese alibaba vendor: It's not a motor I've ever worked with before. I'm pairing it to this controller and an LCD from BMS battery...

I've played around with a few different BBS0X's, and in general I've found that they're pretty smooth, quiet, quality units. However, the pulsing/cogging in the lower PAS modes at low motor RPMs is driving me crazy! I find this problem is much worse on the BBS02 - I purchased mine (a 36V 500W)...

Thank you, Dani85, for the help! Placing the gears as you mentioned did make reassembly smoother. Now the motor doesn't freewheel in reverse, and there's a lot of drag - certainly more than there should be - in both directions. On the axle between the gears (shown in Dani85's pic above) there...

I haven't tried powering it back up, as I'd have to literally pound the side cover onto these gears. 2 of the 3 gears' teeth line up with the ring gear of the side cover, but not the third - they directly interfere. I think the side cover should just side right on... If I don't hear from anyone...

I'm using a Q100H mid-drive for a customized utility bike. I had to cut down the axles, and in the process stripped a screw that then required complete disassembly of the motor to properly fix. The motor seems locked up as I'm putting it back together. Notably, the planetary gears seem to be...

I'm really curious about these cells. They have them stuffed into the nicer lockable frame mounted packs, and I'm considering ordering a couple to see how they handle. If anyone else has had experience with them I'd love an update!

I've been playing around with ebrake sensors, and I've settled on my favorite: http://em3ev.com/store/index.php?route=product/product&product_id=196 Super easy to use, NC, ready to go. Just 2 wires, too! You can also get them here...

Hey all, Thanks for the responses. Since we're in a time crunch on this project, and I still don't have confidence that I'll be able to do a good RC drive, I've decided to abandon an RC mid-drive in favor of a hub motor. But... will that hub motor actually be mounted as a hub? We'll see...