Blog Archives

Ebikes – DBMS issues with counterfeit parts

The DBMS worked fine for 50 or 60 km, but the behaviour of the various components – batteries, motor and controller and DBMS started to get erratic, and it started to get difficult to tell what was going wrong. I

Posted in Arduino, Computer Stuff, Dual Battery Management System, Electric Bikes, Other Technology, Yuba Mundo eV4

Ebikes – dual battery managment system more riding.

Two more days of testing, a week apart, building on the numbers from day one. Total kilometres over the three days 66.4  and total time on road 3h22m, giving an average of speed of 20kph or thereabouts. The bike was

Posted in Arduino, Dual Battery Management System, Electric Bikes, Programming, Yuba Mundo eV4

Ebikes – dual battery management system – first rides

I have waterproofed both the DBMS and the power meter, so am feeling a bit happier about going out for a ride or two. I did my first ride just after I finished the basic unit, but it was all

Posted in Arduino, Dual Battery Management System, Electric Bikes, Programming, Yuba Mundo eV4

Ebikes – dual battery management system – build and install

Build After a few months of designing, prototyping and waiting for all the components to arrive, I finally had enough to build a working, install-able prototype of my Dual Battery Management system. It is still a prototype, and like all

Posted in Arduino, Computer Stuff, Dual Battery Management System, Electric Bikes, Programming, Yuba Mundo eV4

EBikes – Dual Battery Management System

The only commercial developer of dual battery electric bikes I have seen to date is Bosch, who do an optional Dual Battery kit, which one or two manufacturers have taken up. Being proprietary technology, there is not a lot out

Posted in Arduino, Dual Battery Management System, Electric Bikes, Programming, Yuba Mundo eV4

Yuba – display woes

After just a couple of hundred kilometres, the main display unit described below stopped working correctly. It bega with it occasionally not switching on first time, needing a repeat try, and this gradually got worse until it was taking 6

Posted in Electric Bikes, Yuba Mundo eV4

Yuba dashboard upgrade part 2

The new display panel has arrived, and was promptly fitted. Immediate thoughts were that it switched on and worked out of the box! Second thoughts were that the settings were also pretty good out of the box, with the exception

Posted in Electric Bikes, Yuba Mundo eV4

Yuba dashboard upgrade

A few posts below I mentioned that the handlebar display panel was a fairly standard C963 display panel, branded as a Lekkie. It is based on the KM5S made by King-Meter. A quick review of its capabilities compared to what

Posted in Electric Bikes, Yuba Mundo eV4

Yuba – another ride in Kapiti with Lynn

Having spent a hard week in the workshop, and most of Friday and Saturday digging a patch of clay over in the back garden, Lynn and I decided to have a trip out on Sunday. I wanted to show off

Posted in Electric Bikes, Yuba Mundo eV4

Yuba – another go at the long ride.

So Tuesday 4th July, I took the car back to have the service and WOF finished (replacement radiator and steering rack bracket), and I put the bike on the back again. Same drill, set off from Kapiti Honda at about

Posted in Electric Bikes, Yuba Mundo eV4