Recent content by polynoth

Silver fish cases come in different dimensions based on the capacity of the pack. Measure your old one in mm. Lxwxh and shop for one that matches. I can help you with links if you want

They make them now!

Thanks Ron! Yeah, I had thought about that. I am having second thoughts about that exact setup, but am considering similar options.

I found a disc brake and sprocket combo for a #35 chain . I dream about this for more standard chains but am considering trying this on my next build for a left side mid drive im working on...

I am thinking of taking a gamble, and ordering this and seeing if I can make it fit into my 1979 motobecane v50.... if not, I'll order a motoped frame kit, as I know that will fit.

If you want a hub motor, Mxus 5k turbo is a good option. some guys run the 3k turbo version with the adappto max E controller at up to 14kw peak. the 5k is rated at 5k continuous.

yeah, I had no intention of charging them from the grid at more than 2-5kw... and If I decide to implement this, I was thinking that I would go no more than 3-4C in a DC to DC system., grid charge the charging batteries while I am out, and then use them to speed charge the velo pack when I need to.

yeah, grin has them. https://www.ebikes.ca/m3540ss.html

Yeah, I don't have my own house... I have 30A useable here. the most you can get here in my area, even when you own a house is 100A service. I plan on buying one soon, and I will get the upgrade in service when I do!

yeah I considered that. but, LTO, particularly yinlong 40ah cells can handle 400a constant both charge and discharge. that is an insane 24KW at 60v. sure, they are heavier and lower voltage, but for my application that does not matter. what matters is that they can be charged in extreme cold...

I am glad you brought that up, I was under the impression that I could get 10,000 cycles at 2.8v.. I noticed that some LTO cells have a 2.3v nominal charge, some 2.4. the 2.3v nominal says 2.7v max and the other ones say 2.8. the yinlong cells, in particular, say 2.4v nominal, 2.8 max, and...

Yes. The cold weather here in Wisconsin and the high c rate combined with decades of use is why I want lto :) thanks! I'll pay the weight penalty and low power density penalty for that. Planning a heavy ebike human bio hybrid velo thing for year round commuting :)last winter was too cold on my...

I was thinking that.. for some reason I didnt think it was that simple. I thought I had to be wrong. Thanks!

yeah, I saw that a while back. pretty rad, but I am nowhere near learned enough to go that route, yet. I am going to stick with what I know for now, and accept that I can charge my pack in under an hour, and learn a lot more before I try anything like that.

if I am being realistic, I was already thinking about paralleling some power supplies to get to about 5kw, and then being able to charge the pack in just over a half hour. that is still insane. thank you for the feedback though.