After reading the pdf ... thus a bike stays upright due to front wheel geometry, ie. rake and trail ... and the gyroscopic affect has minimal affect on upright stability (makes sense as it is easy to lean a spinning wheel a few degrees but gets progressively harder ...).
We all know though that gyroscopic affect makes a wheel when spun harder to lean horizontal ... so yes it might not provide the stability we think, but it makes it harder to lean and thus corner a bike.
Hence why lighter wheels make a quicker turning bike ... and hence why this counter rotating brake disc might be easier to turn. One thing that does confuse me ... brake discs on most bikes are pretty light and much smaller than the wheel, thus surely they would only cancel out about 1/3rd of the gyroscopic affect of the larger and heavier wheel?
Pete
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'90 Suzuki GN250
- Straight bars.
Grumpy Kiwi.
Why fly when ya can make a lot of noise 
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