Really..? Have you every raced motorcycles or cars before.. I like disk brakes when im needing to get rid of 180kph at the end of a 2km straight for the first gear hairpin at the end. Lighter is alway, alway always better...
And the mass attached to the wheels is the most important place to loose weight..
A heavier wheel will have a higher gyroscopic effect, making the whole bike resist Turning into the corner, wanting to stand up under brakes which will agian make it resist turning into the corner under brakes into the corner ( yes you can acutally brake all the way up to the apex of a corner ). Will carry more inertia( resist desecration ) and spin up slower...
I totally reckon that my 5.3kg bikes best attributes are its high speed cornering ( 60-90kph ) and manners under brakes...
You would be very surprised just how far you can lean a wheel set up bike with a decent set of tires over..
If the roads you ride are that poorly surfaced that... Blah blah blah... Just buy a MTB. Its what you really want anyway
It would be interesting to take you on on an Alpine descent on your super light bike. I'm a crap cyclist but not many come past me heading downhill - very few motor powered vehicles seem to keep up either. Having said that I don't take switchbacks at 60-90kph. I don't know anyone that does in the real world either
If you are worried about heavier wheels resisting cornering then discs will most likely be ideal for you - dedicated tubular rims (the part that creates the inertia) can most likely be built remarkably light without the need for a braking surface.
With regards to motor racing, have you ever raced motorbikes or cars on a downhill only course? I've not ridden motorbikes - seen too many idiots in plaster or coffins to consider it
I would say however that stability in the wind would strike me more as a consequence of aerodynamics in motorsport than weight - if your motorbike weighed 6kg I suspect it might be a different matter.
Only raced down hill on the road.. Lighter bikes ( motor bikes ) corner better cause the stress the tires less..
I take the stwich backs at the speed most people do I just brake very late and very hard..
My front pads last me around 1200kms..
Racing teaches you to brake where you need to not any earlier..
All I'm saying is I like riding very fast down tech descents.. And my rim brakes do the job plenty fine.. Wet or dry and I leave the brakes very,very late some times..
It puts a smile on my face
If disks on roadies are really gona be developed well, we'll need muchI softer tires.. And they arn't gona last long or be cheap..
Ohh and I'm not in untill the disks are carbon..
Steel disks fade. When pushed really hard..
That is a Shity feeling.. When you go for the brakes hard and nothing happens.
Carbon rim brakes won't and don't fade. Sure there are plenty of other problems with over heating carbon rim brakes but there are plenty of differnt and just as awful issues with overheating disks..