I have inventoried my on-going projects, because I honestly speaking lost the overview. I had started many projects but many of them are on-hold because they, on closer inspection, cost years to finish and in the meantime other things had become more important and I keep getting interesting new ideas.
In any case, I want to build new solar bikes of the Maxun One, some to lend out. Someone wants to make a trip from India to Greenland on my solar bike. That is a challenge, because the solar bike has to be very robust. This requires, among other things, ultra-lightweight solar panels.
Battery cycle life tests for high charge currents
I want to build e-bike batteries that can be charged with 3C, that corresponds to 20 minutes. For that I want to test which battery cells can withstand this high charging current. The tests will be done with the EBC A40L battery tester:
These batteries will be tested:
- Panasonic NCR18650B: 3,35Ah 3c=10A
- A123 ANR26650: 2,5Ah 3c=7,5A
- Turnigy nano-tech: 1,2Ah 3c=3,6A
The battery cell that requires the largest charging current is the Panasonic NCR18650B. It will also be tested whether cooling of the batteries is necessary.
Building a second solar bike 6 months
Lightweight battery charger with PFC 2 years
....
Superlight e-bike mid-drive motor 1 year
The efficiency on flat roads and uphill is about 90% in contrast to 70% - 80% for normal mid drive motors. The weight is just about 1.3 kg inclusive the crankset.
Busy .. Electronic larynx for production 3 months
Ready! new spotwelder PCB 2 months
Ready! Solar bike PV panel holder 1 month
Ready! New manual SMD solder paste syringe dispenser
Ready! Battery dongle for Haibike Yamaha PW-X motor 2 months
The dongle makes it possible to connect any battery to the Yamaha mid-drive-motor system.
Ready! Ebike cable killer 6 months
This controller looks like a V3 cycle analyst but it has a lot more capabilities. The prototype is currently being used on the solar bike.
