Powabyke suspension forks geometry
Hi, I've just got some suspension forks on my ally Powabyke commuter as I couldn't tolerate the pummeling my hands got from the rigid forks. I tend to suffer from arthritis and found my knuckles on both hands swelling.
I suppose these suspension forks are bought in items, the geometry of the forks doesn't seem to match the frame. The bike was very stable on a smooth surface with the rigid forks, I felt reasonably safe at 42mph down a steep local hill. These new forks kick the front of the bike up by a fair bit, feels like a couple of inches at the bars. Normally that would increase the trail and rake of the forks putting the front wheel spindle further ahead of the axis of the steering head. That conventionally would increase stability and reduce turning ability but it doesn't feel like it! The bike does feel more remote and twitchy, I wonder if some other angles of the forks are different, perhaps a compensation with less trail?
I shall try lowering the bars to put more weight on the front and see if things feel better, but that rather nullifies the idea of saving me knuckles!
Rake is the angle of a line drawn through the steering head to the ground.
Trail is the distance in front of this line of the front wheel spindle.
Less rake and less Trail = less stability but quicker turning.