XRobots
commented
2 years ago I think it would steer the wrong way when you lean if the wheel is on the back.
Open sleepyb opened 2 years ago
XRobots
commented
2 years ago I think it would steer the wrong way when you lean if the wheel is on the back.
sleepyb
commented
2 years ago I think the stability program would need some tweaks to account for the revised geometry.
But the issue with rear steering bikes (recumbent or otherwise) is that they aren't dynamically stable. All attempts at creating a stable steering geometry have failed.
But your omni wheel is specifically designed to balance unstable systems.
I had toyed with the idea of rear "steer by wire" i.e. control the rear wheel steering angle via a servo with no mechanical connection to the handlebars, but ran into issues with low speed stability as the steering angles need to change very quickly.
The Omni wheel could "change direction" i.e. go from rotating left to right, much quicker than a wheel could be rotated.
Anyway, was just a throw away idea.
Love your channel!
On Wed, 18 May 2022, 10:44 James Bruton, @.***> wrote:
I think it would steer the wrong way when you lean if the wheel is on the back.
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Great project!
Several people have commented about locking the front forks sot they can't turn and relying on the balancing to steer as you lean.
If you did that, the next step would be to remove the now redundant bicycle headset, and replace the front forks with a single structural tube & stub axel extending forward from the bottom bracket (with a dummy handlebar for holding onto)
At that point you could move to a recumbent design with the pedals driving the fixed front wheel and the Omni wheel as the rear wheel providing balance and steering. FWD, rear steer recumbents are attractive because of the very simple and efficient drivetrain, but the rear wheel steering is intrinsically unstable. The artificial stability of the omni wheel might offer a good solution.