After a series of road tests I noticed my controller would cut out and display an undervoltage, then it would not power on at all. I bought a DC/DC booster to bring the controller input voltage up to 24V. This was the recommended supply, I was previously running at 12V. This cured the fault and improved performance and response.
I have fitted the front sprocket cover
View attachment 1and modified the instrument cluster..
The current meter is below the speedo, I have taken the output from the Kelly Controller and now trying to scale it to read 600A max. I will be off to Maplin shortly to buy some resistors and capacitors.
I did another test ride today, bike still is really smooth. I have a further 28 batteries to fit to the bike and I have decided to keep the current voltage at 72V and increase the number of batteries in parallel. I will end up with a configuration of 20S12P, I currently have 20S7P.
I am working on my next build, the specs will be a nominal voltage of 111V and I will be using the DLC-28 BLDC from Electric Motorsport. My aim is to build a more sporty electric bike which is comparable to the ICE YZF600R Thundercat.
If you have any views on this I would love to hear them.
Bernel