Dang, that's a bummer! I was under the impression that these were 41ah cells based on the www.hybridautocenter.com description. Looking back at the order confirmation email, I can't believe I bought these at the beginning of 2017 and still haven't ridden this bike!
Hub Motors for Cargo Bikes
- Thread starter mechanix
- Start date
miro13car
100 kW
the problem is there is very little if any info on GOOGLE about those Leaf 8-cell modules.
Wife was gone for a three day weekend, so I spent almost the entire time in the shop! Took it for it's maiden voyage and it is fast! My guess is around 40mph, but I haven't calibrated the speedometer on the CA yet so it's just a guess. Here are some progress pics:
Battery ready to be sealed up:
View attachment 9
Sealed Battery:
Bulk Charger:
View attachment 5
Wiring:
Not much room to work with:
All this has to fit in the wiring enclosure:
This is how the rear wheel is removed....I welded the chainstay cross brace too close to the tire:
Almost done, just have to fix the hernia of wires spilling out and put a plastic cover over the back:
Battery ready to be sealed up:
View attachment 9
Sealed Battery:
Bulk Charger:
View attachment 5
Wiring:
Not much room to work with:
All this has to fit in the wiring enclosure:
This is how the rear wheel is removed....I welded the chainstay cross brace too close to the tire:
Almost done, just have to fix the hernia of wires spilling out and put a plastic cover over the back:
Attachments
dogman dan
1 PW
Love what you did. That chain line problem is why the batteries were mounted so high in back on my custom cargo bike. The one that burned.
In highest gear, the chain would scrape slightly on the bottom of the battery tray. I should have made it a half inch higher. In front, even higher to make the battery tray long enough. You might consider modifying the top tube of that Yuba some day, to make a more front weighted compartment. Could be additional battery, or just a place to put a controller kept dry. or whatever.
In highest gear, the chain would scrape slightly on the bottom of the battery tray. I should have made it a half inch higher. In front, even higher to make the battery tray long enough. You might consider modifying the top tube of that Yuba some day, to make a more front weighted compartment. Could be additional battery, or just a place to put a controller kept dry. or whatever.
Almost finished! just need to put the plastic fairing on the back to cover up the electronics, and finish the balance charger. I have a question for the electronics gurus out there:
I have two 10s chargers to hook up to the 20s battery. I thought that if I had two separate chargers on two separate power supplies, I wouldn't have to worry about electrical isolation between the two groups of 10s cells. All the cells are wired in series, and there is no break in between the two groups of 10 cells. Am I going to have to use a diode in this situation? I measured the voltage between the cable going to charger 1 + and the positive terminal on the charger and it is 80V... a little confused as to why this is??? See wiring details below for details:
View attachment 9
View attachment 8
View attachment 5
View attachment 3
View attachment 2
I have two 10s chargers to hook up to the 20s battery. I thought that if I had two separate chargers on two separate power supplies, I wouldn't have to worry about electrical isolation between the two groups of 10s cells. All the cells are wired in series, and there is no break in between the two groups of 10 cells. Am I going to have to use a diode in this situation? I measured the voltage between the cable going to charger 1 + and the positive terminal on the charger and it is 80V... a little confused as to why this is??? See wiring details below for details:
View attachment 9
View attachment 8
View attachment 5
View attachment 3
View attachment 2
RichW_SC
10 mW
I like this torque arm design. Was trying to figure out an option for my Xtracycle Leap conversion. Is that 1/4"?
miro13car
100 kW
How weather-proof is your design.?
Looks like you forgot about rain???
Looks like you forgot about rain???
Miro: nope, didn't forget about the rain, my final task once the holidays are over is to put a fairing on the side to cover the battery/controller/wiring and 3d print some caps to to cover the charging ports on the console. After I'm done, it should be sort of water resistant, but I don't plan on riding this too much in the rain if I can help it...It'll probably be a while before I get to that though... too many irons in the fire right now!
Cheers
Cheers
