Gorillazilla
10 W
- Joined
- Sep 26, 2021
- Messages
- 90
Ello everyone, This is the Start of the Ebike Rabbit hole for me, Still a lot of things undecided so I will really Appreciate suggestions.
One thing I have decided is to start it with Quality, Just picked up 350 Japanese made Panasonic NCR18650PF cells from Nkon
https://eu.nkon.nl/rechargeable/li-ion/18650-size/panasonic-ncr18650pf-3-7v-2900mah.html
Leaving some cells left over to compensate for possible shortfall in numbers due to defects, and also for Calendar aging capacity testing along side the heavily cycled pack of the same cells.
This is going to be a Big ole battery! Around 14S24P 52V Rear rack mounted as that's the only place I can fit a Pack this size.
The reasons for the Size are for no worries about touring range in hilly Wales while staying in the 80% Charged to 20% charged states.
Essentially only using 60% of the batteries capacity to maximise total Watt hours out lifespan.
Also as a camping and work power supply utilising an inverter.
I'm going to build it in 24Cell Parallel Modules, Utilizing the CELL LEVEL FUSING sheets on the Negative terminal side from Battery Hookup
https://batteryhookup.com/collections/cell-level-nickel-fuse/products/nickel-fuse-2p-wide-continuous-roll-by-the-foot-18650-cell-level-fusing?variant=34549080457378
So that in the Unlikely event of a cell failing in a dead short, the other cells in Parallel will blow the fuse when they begin to discharge through the Defective cell, Isolating it and preventing the other cells from dumping all their energy into it.
And just normal Nickel strips connecting the Positive terminals
I'm only using the Cell level fusing on one side, to increase the reliability of the fuses and reduce resistance
In part due to information from this video
"Double fuse adds resistance in the shorting loop, that lowers the max short circuit current, might be just enough so the fuse doesn't blow. "
https://youtu.be/iL6Td8R5C1g
Drive will be a 3KW Cyclone Mid Drive for Climbing hills while Pulling a load, either passenger or cargo in trailer.
I have not currently fully decided on which Bicycle to use (though I do have An old basic hard tail MTB to use if needed)
So suggestions on a good Solid widely used well known and reliable bike to build an Ebike with would be appreciated!
Comfort first, preferably with provisions for an Upright Seating posture because I have a Bit of a dodgy Tech neck.
A Multi Connection point seatpost rack Like this "Might" open up the possibility of using a Full suspension Bike for comfort, I have No intention of any form of jumping, careful A to B Touring and BikePacking so May be OK
https://youtu.be/KHwzeQNrQlo
One thing I have decided is to start it with Quality, Just picked up 350 Japanese made Panasonic NCR18650PF cells from Nkon
https://eu.nkon.nl/rechargeable/li-ion/18650-size/panasonic-ncr18650pf-3-7v-2900mah.html
Leaving some cells left over to compensate for possible shortfall in numbers due to defects, and also for Calendar aging capacity testing along side the heavily cycled pack of the same cells.
This is going to be a Big ole battery! Around 14S24P 52V Rear rack mounted as that's the only place I can fit a Pack this size.
The reasons for the Size are for no worries about touring range in hilly Wales while staying in the 80% Charged to 20% charged states.
Essentially only using 60% of the batteries capacity to maximise total Watt hours out lifespan.
Also as a camping and work power supply utilising an inverter.
I'm going to build it in 24Cell Parallel Modules, Utilizing the CELL LEVEL FUSING sheets on the Negative terminal side from Battery Hookup
https://batteryhookup.com/collections/cell-level-nickel-fuse/products/nickel-fuse-2p-wide-continuous-roll-by-the-foot-18650-cell-level-fusing?variant=34549080457378
So that in the Unlikely event of a cell failing in a dead short, the other cells in Parallel will blow the fuse when they begin to discharge through the Defective cell, Isolating it and preventing the other cells from dumping all their energy into it.
And just normal Nickel strips connecting the Positive terminals
I'm only using the Cell level fusing on one side, to increase the reliability of the fuses and reduce resistance
In part due to information from this video
"Double fuse adds resistance in the shorting loop, that lowers the max short circuit current, might be just enough so the fuse doesn't blow. "
https://youtu.be/iL6Td8R5C1g
Drive will be a 3KW Cyclone Mid Drive for Climbing hills while Pulling a load, either passenger or cargo in trailer.
I have not currently fully decided on which Bicycle to use (though I do have An old basic hard tail MTB to use if needed)
So suggestions on a good Solid widely used well known and reliable bike to build an Ebike with would be appreciated!
Comfort first, preferably with provisions for an Upright Seating posture because I have a Bit of a dodgy Tech neck.
A Multi Connection point seatpost rack Like this "Might" open up the possibility of using a Full suspension Bike for comfort, I have No intention of any form of jumping, careful A to B Touring and BikePacking so May be OK
https://youtu.be/KHwzeQNrQlo