Recent content by David Groen

I have successfully converted my Sparta RX to run on generic components using the original front wheel motor. I have a Brainwave controller which does everything I need, but is rough under about 5mph. Many posts recommend KT sine wave controllers and LCD display which are slightly more...

Hello, I have the S866 LCD and similar controller. I also had problems with the PAS and eventually bought 3, of which only one worked. I tested them all on a scope in situ, and they all gave a square wave. The only difference with the working one was that the width of the square wave was...

I have now successfully converted my Sparta to use a generic Chinese controller and LCD display ( approx £35), PAS (£8), throttle (£8)and the original motor, which didn't need any modification. The only thing I couldn't use was the original battery, shame as it was a big one with loads of power...

hooi! i have found the same problem, the closed one is neater but doesn't work. It seems to be related to the width of the square wave, rather than the height (=voltage). This website below explains it , but doesn't help decide which PAS to use, so I had to buy 3, of which only one worked. All...

Hello, I'm in West Sussex and have a Sparta Ion (!) and a Batavus Dutch ebike. I get them serviced at Dutch Bike Shop in Littlehampton; highly recommended. Has anyone successfully converted a Sparta Ion to use generic parts to avoid the software issues, (and not being able to easily buy parts...

There is only one dealer left in the UK, Dutch Bike Shop in Littlehampton, West Sussex. Paul and Brian who own it are really helpful, have the software and can get parts from the Netherlands. They used to sell Dutch bikes until......well, you know the rest. I bought two Batavus bikes from them...