Quote:
Originally Posted by Cycle
I've been considering an alternative... a lengthwise "slit" or "slits" along the bottom length of the bike, with a "step" to it (them), so that as you lean into a side-wind, it opens that "slit" (slits) up to the cross-wind. It'd duct the air through the underbelly to the other side of the bike, to an identical "slit" (slits), pushing that air to the leeward lower-pressure side of the bike.
That'd provide a huge amount of porosity while not creating any drag in straight-line riding. Of course, that means the forward speed of the bike isn't used to ram air into the duct, capitalizing on the forward speed to contribute to side-wind cancellation.
Perhaps a combination of the two... ram air ducts feeding the horizontal slits. A side wind would force the incoming air to the opposite side of the bike due to pressure differential.
What do you think? |
The amount of body below the axle line would roughly cancel the roll moment for an equal portion above the axle line.Any bodywork above this line would be where the lion's portion of instability would reside.The 'centroid' of the crosswind center of pressure would be the place to position the extractors,but that places them 'high' on the body.
The difference between what you as a rider,with lean-steer and the overall roll moment would have to be made up with the pressure bleed of whatever body aspiration you accomplished.
Without actually building a test-bed bike,it's gonna be hard to have certain design information necessary to arrive at the final solution.