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Yep all good stuff. I don't have the resources to build the battery yet. I want to build one but I have to buy everything for it. I need to build / put together a good spot welder. Then I'm ready. Probably use the molicell. I have 2 450 watt dc power supply / meanwell drivers. And a bunch of...

Good points about the cell Temps. I know what you saying about hot and cold effects. Seems like it would be best to put the thermistor in the middle of the pack. Where ever the hottest spot you can get to. I'm not too much worried about the cooler Temps. But high Temps yea. To get max amps out...

If I had the intention of just riding on a stock setup I'd probably vent the motor and upgrade the connectors. At least to XT-60 or XT-90 but other than that I'd leave it. I'm sure I will push this motor until something gives so I did a ton of research to see what issues people are having...

They use fiberglass insulators on the inside of the motor. Over top of the normal insulation. The 8GA Silicon is rated at 200C so it's plenty good. The motor shouldn't really ever go over 150C and even that could be way to hot. My only fear of fiberglass is that over time from flexing or...

Right.... I have been in my trades for 30 years now. God i wish i was in my 20s. I make a really good wage. Especially I live in a rural area with a very low cost of living. But I have 7 kids and a wife so it don't go far. The best part of my job is the equipment i have access to. It opens up...

Now lets go ahead and move on with the battery. Lets compare the 2 different lg cells. LG INR21700M48F 21700 17.4Wh Li-ion Battery cells ---->> This is what's in the battery. This is what was specked by UPP. Lithium Ion INR21700 M50 18.20Wh The pack is 13S 5P- Damm I lost some photos on my...

Certainly it is not a project to take on if you lack the proper tools and knowledge of safe practices. And then of course you have to know all the math involved with building a pack. But I believe some of the people on here could do it safely. I know I can. Far as my 3D models go them are worth...

Well that's good to know. I really think I'm gonna pot my battery. I could use electrical silicon that's clear but there's better stuff with higher thermal transfer rates. When I bought my battery the LG was the best I could find. I would have bought Samsung. Really the best is the Molicell...

Hummmmm.... One thing to add. You notice that that ground tab is bent. When my rack broke my battery fell and it must have moved inside the case. I think when im done i will machine my own aluminum case for it and pot the whole pack in the case. That would be really safe but a pita if you ever...

Long story short someone tipped me off that some UPP batteries were causing fires. I had already planned to tear down the battery and swap out the BMS so hearing this I immediately tore down the battery to inspect it. I paid nearly $500 to get the best quality I could from Amazon. This was my...

I bought highest grade cable I could find. It was 65 for 20 feet. It's rated to 200C and 600V and the silicon is nice and thick. I'm gonna use it for phase leads directly to the motor too. I think I'm going to put braided stainless steel hose over the wire for even more protection. Ok I'm...

Wow I didn't know that. Luckily I haven't been using it yet. I know the battery I bought has high quality LG 21700 cells. I paid 500 almost for 48v 24ah. Anyway I have the top secret specs from LG testing the exact cells I'm supposed to have. They can take a he'll of a lot. At any rate the bat...

I bought a flipsky v4 remote. It has double action thumbwheel for throttle and brake. It also displays more info than a normal display. I'm going to take the guts out of the remote and machine my own cases / thumbwheel to put them in to suit them for a bike. But I'm running a vesc not a...

I have a G51 display that I can probably let go in the near future. I'm putting a Tronix 250R VESC on to replace my controller and I have a Flipsky V4 Remote - Throttle / Display combination. It is much nicer. For my G51 I never got asked for any code. In the display parameters you can set MPH...

What size are you looking for? Mine are 20 X 4.0. Amazon

With my battery and all I'll break one of those. You need to measure the seat tube with something. I use calipers and micrometers that are expensive. They measure very accurately. These are cheap but still good enough...

In case your wondering what the collar looks like. I modeled the bike frame today and designed the collar that will also hold my rear rack. I'm betting it could hold 200 + LBS. The rack bolts down to the collar, It also snaps in place so that nothing can move anywhere. If you guys need parts...

Yes, you can run 4 inch tires. But i would look for the thickest toughest ones you can find. My wheels are 20 X 4.0 and I'm running HEB Allacapes. I really like them and they are much more flat resistant.

Ok I've been thinking about good ways to leverage the VESC control system. I got a great Idea. They make gyroscopes that hook to the VESC for controlling the One Wheel operation. It measures movement in every direction. If I attach one I can program it to be a bike alarm. If the bike gets moved...