I'm looking for the cheapest way to add suspension to my 20 inch folding bike. This is my bike:
As you can see, the place where the seatpost enters the bikeframe (not sure what it's called) is low, like on dahon and tern frames, which is a problem because I cannot find a suspension seatpost that's long enough (the one I got with the bike is 450mm, and I have it fully extended).
I already replaced the saddle and it helped a lot, but I could use a bit more suspension. The tires are 1.5 inches wide and the rims only allow for tires up to 1.75 inches wide, and since it's an ebike I don't want to deal with replacing the rims as well (rebuilding the wheel with the hub motor is expensive).
Is there a way to extend the seatpost? How about an entirely different solution (that you might know about...)?