Bought a portable CD player because I have boxes of discs I am curious enough to listen to but too lazy to spend the time ripping and encoding. The player has rechargeable batteries and bluetooth so quality of life is good. Still readjusting to the bulky reality of the device and having to carry physical media.
@flamingbicycles
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Cleaned up the terminals and put insulation rings on the cells selected for the next battery pack. This is for the Jasion brand ebike that I received in disrepair and tested the motor. I managed to salvage the down tube battery case so I arranged the cells in the holders from that. Nickel strips and spot welding are next.
Ordered a left angled C13 cable and soldered on XT60 connector for the controller. The “ebike” seems to work with the battery build. Ran it on a 9 mile commute. The gearing is way low for the motor and pedaling is awkward so it is a sit down scooter. Don’t think I can suffer riding it through a full discharge test, much less several battery cycles. Trying to find someone who has practical use for it so I can pass it along.
Ran some errands to test out new mid-drive conversion. The TSDZ8 motor is probably overkill but handles very well. I really like torque sensor mid-drive ebikes. Redoing the cockpit in orange is probably the next step.
I put some packing foam in the base of the battery case (just in case the silicone fails to keep the pack from sliding around). I assembled the case.
Seems the rail on the bike is larger but the case came with a rail, so no big deal. But there’s also gender mismatch on the discharge port.
Kind of seems like I ordered the wrong case. Moments like this affirm the tendency to hoard- I am off the rummage the spare cable box.
Rode to the local park hoping to see some Catawba Rhododendron in bloom. Apparently groundskeepers majorly trimmed them back so only had one flower. Did find some amazing mountain laurel while riding the single track.
I didn’t intend to convert this bike to 1x but I’m trying out Box Components shifter and rear derailleur. Specifically box four, which is 8 speed with a clutched derailleur capable of handling a wide range cassette. So far it feels great and shifts smoothly.
Wrapped pack in heat shrink. It fits well into the metal tube that is the body of the silver fish battery case. Ran some caulk around the ends to hold it in place. Probably not the best silicone for the use but it is on hand.
BMS installed with charge and discharge connectors ready to plug into the head of the case.
I don’t have wide enough pvc heat shrink on hand. Two sides of the pack totals 170mm so rounding up and grabbing some 200mm to seal it up into a nice blue brick.
Cut some fish paper to cover cells in the battery pack, both terminal sides and where BMS with balance leads will sit. Using a salvaged BMS so extra wire got spliced on some short leads. Looks like a big mess but hopefully there are minimal crosses and kapton tape for added insulation between wires where they do cross. All the voltages on the plug were correct.
Next step is soldering discharge and charge wires to the BMS before it gets wrapped in heat shrink.
Slowly topping up the charge on each group using general purpose balance charger set to single series lithium ion. 10 groups done with 3 remaining.
