Originally Posted by
Brompton_X
The pictures I got are from facebook. It is a closed group and in Chinese. He didn't say too much but just sharing the pictures.
Two chain rings or mountain drive are probably easier to get the job done. There are quite a few videos on youtube if you need reference. Personally I like mountain drive better.
Thank you. Yes, mountain drive and similar solutions are "cleaner" but I fear heavyer. I`ll start riding what I have done so far and look into if I need more range.