i have no problem to build the base and the hang for the bike, but how can i make a mechanism that will make the petal harder to push? any ideas?
A: haha, M R you made me laugh.
Go with what crosamich said. I would've said the same thing. He's being logical, but I know that being logical is sometimes not fun (isn't it great building something that you can use? I know the feeling!).
You'd just have to hook something up to it to slow it down, either by friction or weight (requires more umph to spin a heavier weight). It depends on how you're building the thing.
