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Posted: Thu Nov 03, 2005 4:59 am
by Nibblet99
shane-o wrote:If ya wanna feel the "gyroscopic" forces applied to a spinning wheel in its truest form...pick up a 9" anglegrinder, hit start = approx 10000 rpm, then try tilting the spinning disk. It kinda feels like a bike when ya wiggle the bars at high speed.
now hold the anglegrinder with the disc spinning vertically, whilst sat on a swivel chair... and tilt it
If you haven't got an angle grinder, a bicycle tyre on a spindle will do nicely (although an angle grinder is useful for removing the bike tyre, for attatching to a spindle)
Posted: Thu Nov 03, 2005 5:08 am
by Nibblet99
also, I don't think anyone has yet considered te affect of air drag on the rider and bike, whilst the wheels are powering forwards the outside of the turn.... That would create a moment (a turning force).
Posted: Thu Nov 03, 2005 5:40 am
by ronboskz650sr
Nibblet99 wrote:shane-o wrote:If ya wanna feel the "gyroscopic" forces applied to a spinning wheel in its truest form...pick up a 9" anglegrinder, hit start = approx 10000 rpm, then try tilting the spinning disk. It kinda feels like a bike when ya wiggle the bars at high speed.
now hold the anglegrinder with the disc spinning vertically, whilst sat on a swivel chair... and tilt it
If you haven't got an angle grinder, a bicycle tyre on a spindle will do nicely (although an angle grinder is useful for removing the bike tyre, for attatching to a spindle)
Don't forget to pick your feet up...This is a great example of the conservation of angular momentum...a yo-yo is a slightly different example, as is the merrygoround example...was that in this thread?

Posted: Thu Nov 03, 2005 6:23 am
by sv-wolf
Nibblet99 wrote:also, I don't think anyone has yet considered te affect of air drag on the rider and bike, whilst the wheels are powering forwards the outside of the turn.... That would create a moment (a turning force).
Hell, we are getting sophisticated now, Nibblers. Anyone want to offer a certificate of competence for getting to the end of this thread?
ronboskz650sr wrote:as is the merrygoround example...was that in this thread?


I think a merrygoround is a perfect image for what has been happening here. The thread seems to have conserved its momentum (including quite a lot of the angular variety) over the last couple of weeks.
Cheers
Richard
Posted: Thu Nov 03, 2005 9:54 am
by ronboskz650sr
Posted: Thu Nov 03, 2005 12:52 pm
by sv-wolf
Jacob
Thanks for taking the trouble to engage in detail on these issues, and no doubt for spending time and energy over trying to make things clear. I've very much enjoyed the discussion.
Regards
Richard
Posted: Thu Nov 03, 2005 12:56 pm
by Posthumane
Thanks Richard, I certainly enjoyed the mental exercise and discussion. It would be much better to ride out to a (not so nearby) pub and discuss this over a beverage, but we seem to be on opposite ends of the pond, so that rules that out.
Cheers,
Jacob
Posted: Thu Nov 03, 2005 12:57 pm
by sv-wolf
I've just had a look back over the last hundred odd threads in this forum. Would you believe that a 'Nerds Corner' like this has generated more hits than any other except one (and that, of course, has 'women' in the title.)
Ride safely everyone (with or without the aid of centrifugal force!)
Posted: Thu Nov 03, 2005 1:00 pm
by sv-wolf
Posthumane wrote:Thanks Richard, I certainly enjoyed the mental exercise and discussion. It would be much better to ride out to a (not so nearby) pub and discuss this over a beverage, but we seem to be on opposite ends of the pond, so that rules that out.
Cheers,
Jacob
Oh, you never know, Jacob. Canada is definitely on my motorcycling hit list. Maybe one day.
Posted: Thu Nov 03, 2005 1:15 pm
by ronboskz650sr
I have posted this thread over on Kzrider.com...there is interest in this topic, and I figured this thread has the most in-depth treatment of it. Hope you guys don't mind (translate..."sorry, too late"

).
Much easier to ask forgiveness than to get permission, although I know you guys don't mind...old Air Force habits die hard.