Aussie Jon

Thank you for your positive responses about the bike. Also you all summed up what I thought would be the answer. I am having difficulty finding drawings of the Bafang mid mount motors to try and determine if I can modify my existing cradle to fit a Bafang. Are you aware of the mounting dimensions for Bafangs?

I love my bike, but I see the motor and batteries as the parts that are becoming obsolete fast. Is the EU or other organisation working towards a universal mid mount motor cradle standard? or is the pace of ebike evolution too fast at the moment? Background: I have built myself an ebike and am thinking of my next mid mount motor. But I want to future proof my bike a bit. Current bike is a Yuba Mundo V5 frameset, a Merida Cappuccino donor ebike. Hacksawed out bottom bracket, jigged up cradle, TIG'd cradle in, canabalised Merida, built up Yuba. in 2018/2019 I toured, New Britain (PNG), Solomon Islands, Timor Leste, Langkawi(Malaysia) and Singapore, bike has 10,000km on it and the battery is getting tired (about 6000km motor use, in developing countries I save the battery for the big hills or when sick. A new Shimano 6000 battery is over $1000AUS . A complete Bafang 620 cargo bike system is $1300AUS. I could cut the out cradle out, fabricate a new cradle for Bafang and get going. But its a lot of work. I like my Yuba, its a keeper. My questions: 1. Do any companies have a universal cradle that is a common standard? 2. What modern mid mount motors are compatible with Shimano 5000/6000 series cradle? -do any of the Bafangs fit?