I've used a granny bike for commuting the last two weeks, but I'm worried about the pain I get in my knees. What could be the problem?
I've tried different saddle hights and angles. I know it's a heavy bike so I keep reminding me to gear down. I intended to use the bike during the winter, but if the knee problem doesn't go away, I have to find another solution.
Suggestions? Thank you in advance.