Bob K
10 W
I have batteries and a bike and I think a Leaf motor is what I want.I am not sure what wind is proper for may application. These are my batteries:
Have batteries, will travel.
- Thread starter Bob K
- Start date
I have batteries and a bike and I think a Leaf motor is what I want.I am not sure what wind is proper for may application. These are my batteries:
Bob K
10 W
Bob K
10 W
This the bike, a Giant DH.
Bob K
10 W
I can get 98 cells in the triangle for a
14S 7P battery pack. ( 2.5 amp continuous, 5 amp max per cell)
I have enough cells to get up to 14S 9P
with some "messy" packaging.
I only have the hills of the beach areas of
San Diego to deal with so that is mostly
moderate hills , I believe. 30 mph cruise
speed with 35 mph sprints between bike
lanes ending and re-beginning is fine. This
is a recreation bike so range is not a "deal breaker".
I am looking at a Leaf motor however I am not
sure which wind is optimum for my 26" wheels.
Any input/experience is welcome!
Thank you!
Please see the attachment of my skateboard battery
as an example of my current ability to make battery packs.
It is not professional grade, but it works well.
14S 7P battery pack. ( 2.5 amp continuous, 5 amp max per cell)
I have enough cells to get up to 14S 9P
with some "messy" packaging.
I only have the hills of the beach areas of
San Diego to deal with so that is mostly
moderate hills , I believe. 30 mph cruise
speed with 35 mph sprints between bike
lanes ending and re-beginning is fine. This
is a recreation bike so range is not a "deal breaker".
I am looking at a Leaf motor however I am not
sure which wind is optimum for my 26" wheels.
Any input/experience is welcome!
Thank you!
Please see the attachment of my skateboard battery
as an example of my current ability to make battery packs.
It is not professional grade, but it works well.
Attachments
wesnewell
100 GW
Those are really lame ass cells (2C max). I wouldn't try and pull more than 20A from a 14s7p pack made with those cells.
Bob K
10 W
Thanks for the reply.
I guess the title should be : Have Batteries, will Travel Slowly...
Maybe that is why they were free.
Back to the scrap yard...
Bob K
I guess the title should be : Have Batteries, will Travel Slowly...
Maybe that is why they were free.
Back to the scrap yard...
Bob K
The standard 4T winding on the Leafbike motor is fast, 39-MPH on 48V / 13S in a 26-inch wheel. You might consider 12S (44V). As far as the cell is concerned, I would suggest figuring out the biggest pack you can be happy with. Completely filling the frame with cells is good for volts and amps, but it is heavy. You say you already have the cells? They sound low-amp. Not horrible, but slow acceleration.
Since your hills are not long and steep, a direct drive hub should be OK. If you spec a 10A cell (there are selections from Samsung, LG, and Panasonic that have roughly 3.4-Ah per cell), then a 7P pack will provide 10A X 7P = 70A. If you decide to use 13S, then 48V X 70A = 3360W of power. Should be decent acceleration. 7P of 3.4-Ah per cell is around 23-Ah of range.
"Leafbike high efficiency 1500W motor"
https://endless-sphere.com/forums/viewtopic.php?f=30&t=66489
Since your hills are not long and steep, a direct drive hub should be OK. If you spec a 10A cell (there are selections from Samsung, LG, and Panasonic that have roughly 3.4-Ah per cell), then a 7P pack will provide 10A X 7P = 70A. If you decide to use 13S, then 48V X 70A = 3360W of power. Should be decent acceleration. 7P of 3.4-Ah per cell is around 23-Ah of range.
"Leafbike high efficiency 1500W motor"
https://endless-sphere.com/forums/viewtopic.php?f=30&t=66489
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