Originally Posted by williaty
That's a somewhat deceptive statement. Required for what? No matter how much travel you have, you'll always be able to go faster (requires more movement for a given bump) or find a bigger bump. In a very real sense, you can never have enough travel. You can, perhaps, design around the 80th percentile bump and speed, which is where a lot of goal come from. There's also inherent limits on stroke created by the overall suspension geometry of the car.
I am not going to argue w/ you that BC's are stroke limited. But its also important not to get ahead of yourself with this stroke business. I mean you do agree that stiffer springs require less stroke, right?
Cars w/ lower motion ratios will require significantly LESS stroke.
You only need enough stroke to be not fully compressed on corners and have enough travel to soak up the bumps.
You could rig up shocks like these if you think longer (stroke) is better: