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I built a front hub with a MAC in 2015. I also have a couple of Golden motors. I like the MAC. For a reasonably priced motor, it is very solid. The throttle and cruise control work smoothly. I can run it from 36v or 48v. I just want a good motor to climb hills, one that stays cool. I don't need...

Wow, we all have the Mini. I have the 30Q. I wish it was 36 volts. I've actually found it fits in my handlebar bags, my seat bag, and a tube bag. I feel like they pushed the voltage to 52 because the high capacity cells drop off a bit more quickly. My ancient LiFePo pack holds at or above 36v...

Court, What's weird is that I bought one of those Ebay LiFePo packs that you mentioned in the earlier builds. (I mostly started by just copying you.:)) It's been 18 months and I've used it steadily on one of the bikes I ride. I ran the battery down, by mistake, and figured out some things about...

Here's a guy who is basically building and soldering recycled cells on an industrial scale. The soldering is toward the end. The other stuff is interesting if you are into it. I think he is up to a 30 kWh power wall now. I've watched a lot of the videos where people build and recycle packs. I...

Micah, This is the problem for me, I guess. I see cells that are a cut below the Sanyo GA cells, maybe LG, Sony, or older Samsungs. Mostly these are Chinese sites, but the prices are maybe $4 a cell. I'm not going to do it and I'm not going to just buy cells for an ebike. I just wonder if there...

What sources? I think you are allowed to list them. I think he went with high priced cells. The strips that are pre-welded would act as a heat sink across the parallel cells. People solder their balance wire connections. This video basically said that everyone should make their packs like...

The wind resistance makes the lower speeds cost less in terms of watts. It takes around 150 watts to go 14 mph, whether it is your power or the power of the motor. You need 300 watts to go about 20 mph, so not much difference in speed. Most people pedal steadily on an ebike, with the pedal...

Most of the action is in automotive cells. Tesla has the new bigger cell, which is going into Power Wall 2, apparently, for now. With GM using pouch cells and Tesla auto using the bigger cells, there could be cheaper cells floating around, just because there is machinery to make these 18650...

The Commission also has directed staff to perform additional work to address the emerging and ongoing hazards associated with high energy density batteries, including but not limited to enforcement, voluntary and mandatory standards work, import surveillance and compliance, and industry...

Here's what Musk and Tesla are saying. The new cell has twice the capacity and they claim it costs less. They say the cost for a kWh, just for the cells, is around $100. For something like an ebike, the battery cost is becoming trivial, but you have to wait for the technology to move into the...

I do it all the time. Put it in the bike of my truck and hit the interstate where the speed limit is 80.

Lots of stuff going on. It's a pre-order at the $1k price. I assume you give them the money now and they build the bikes with your money. It's like a crowdfund without a guy taking money off the top. The free shipping is really nice. The bike is nice tech. They talk about tweaking the PAS...

It's complicated, with Brammo... I forgot that, probably because nothing has happened.

Interesting. I could see them making a light motorcycle that would have to be registered as a motorcycle. That market is wide open. Maybe a 5 thousand watt motor with a 3 kWh battery and up. With the legal limits for ebikes, it is hard to make something that fits in with their performance image...

I've used these, but not on a Sondo. Met a Sondors owner this morning. He likes the bike and goes tearing up the hills. He was very fit.

There's a very comprehensive summary of the battery KS here. Ron explores where this project could go if it could build a little momentum. I did the costs on a couple of kits and figured the kits with larger numbers of cells were a better deal, per cell anyway. This is a project I would support...

http://newatlas.com/xshifter-electronic-gear-shifting/46169/?utm_source=Gizmag+Subscribers&utm_campaign=9297441880-UA-2235360-4&utm_medium=email&utm_term=0_65b67362bd-9297441880-92403309 It's an interesting concept, especially for a mid-drive where you want to shift quite a bit. Auto-shift has...

For the old timers and all the people who remember the original campaign. This article says that the lawsuit between Mr. Sondors and A2.0 was settled. http://gas2.org/2016/10/07/sondors-electric-car-everything-elio-not/ Meanwhile, he might raise his million for the e-car. You give him any...

Hi Eric, It’s all a little new to me, and pretty fast moving. I had LiFePo cells in my Prodeco. I bought LiPo packs from HK for my first build, and then went to another LiFePo from China. These batteries worked well and held their voltage, but they were just big pouches soldered together...