Ok, it’s time to explain what was previous post about.
As I designed my Honda CB750 Seven Fifty cafe-racer as a motorcycle with clear frame triangle, I had to manage question of hidden battery location. In first version of design it had to be placed in tail, but in design v2.0 it should became more complicated issue.
Fortunately, battery technologies are moving forward fast, so now one may buy lightweight, compact but safe and powerful LiFePO4 battery. So did I. I chose Aliant YLP07. It has only 450g of weights, 114x98x40mm dimensions but in the same time is of 7Ah of capacity and 260A of cranking amperes. That’s really impressive, even as price of battery quite high.
Battery arrived at Winter, so I had a lot of time to find a place for it, even as I was completely busy making kits. I found several potential points for battery location but finally I decided to place it under the swingarm. Zephyr swingarm which I used in this project left a bit less of space then original one, but there was still a little room for battery there.
But surely, battery, placed in such place should be strongly protected from weather and vibrations. And it also should be still accessible without need of half a bike’ disassembling. So I began from searching of box suitable for battery. I found one in local electrical shop. It was made of aluminum and battery fit tight to it.
Last layer of rubber.
Now about how it mounted to frame. Seven Fifty has crossbar in lower rear part of frame to which central stand mounts is welded. Those mounts spoil the frame silhouette so I had intention to cut them off anyhow. Here you may see what I am talking about, just look at that ugly piece of metal right above the ends of exhaust mufflers.