There is also that extra small friction system from velogical which has the advantage of allowing you to use a mudguard: https://www.velogical-engineering.com/v

There is also that extra small friction system from velogical which has the advantage of allowing you to use a mudguard: https://www.velogical-engineering.com/velospeeder/product-information/?lang=en https://www.velogical-engineering.com/velospeeder/product-in...