GreyOwl Posted February 26, 2008 Share Your not wrong Bruce. Its just, ...never mind!! I like you JB...Its all good. Link to comment Share on other sites More sharing options...
GreyOwl Posted February 26, 2008 Share His speciality is the functioning of the bicycle, so I would say he is an expert. Probably the most qualified expert in SA... Link to comment Share on other sites More sharing options...
The_Break Posted February 26, 2008 Share Then all is fair.A worthy opponent, when I feel like a debate. Luckily that is very seldom. Link to comment Share on other sites More sharing options...
bruce Posted February 26, 2008 Share His speciality is the functioning of the bicycle' date=' so I would say he is an expert. Probably the most qualified expert in SA...[/quote'] Me too! But then I'd also say that the functioning of a bicycle probably only needs the first six months of engineering physics to understand. So I reckon Johan has a bit of sparce capacity there Link to comment Share on other sites More sharing options...
Wonder Woman Posted February 26, 2008 Share The only wobbles I've got are part of me and not the bike, though sometimes they do occur at speed.... Link to comment Share on other sites More sharing options...
The_Break Posted February 26, 2008 Share Now that is a very interesting topic. Your "wobbles" should actually act like dampers. Maybe that is why your bike doesn't get speed wobbles. What do you say Johan? (come on, be a sport and joke a bit... ) Link to comment Share on other sites More sharing options...
straatvark Posted February 26, 2008 Share The only wobbles I've got are part of me and not the bike' date=' though sometimes they do occur at speed.... [/quote'] Now why cant i get a picture of this harmonic out of my mind? Link to comment Share on other sites More sharing options...
bruce Posted February 26, 2008 Share Now that is a very interesting topic. Your "wobbles" should actually act like dampers. Maybe that is why your bike doesn't get speed wobbles. What do you say Johan? (come on' date=' be a sport and joke a bit... )[/quote'] I'd say she has a high Q-factor and she is underdamped. So her resonant frequency is close to her natural frequency. She needs to put on a couple of kilo's Link to comment Share on other sites More sharing options...
GreyOwl Posted February 26, 2008 Share I'm an expert on the human body!! But I wont pontificate on the 'wobbliness' of any females body!! Why?! Coz I'm a frigging genius!!! Link to comment Share on other sites More sharing options...
bruce Posted February 26, 2008 Share I'm an expert on the human body!! But I wont pontificate on the 'wobbliness' of any females body!! Why?! Coz I'm a frigging genius!!! A genius with experience! Link to comment Share on other sites More sharing options...
The_Break Posted February 26, 2008 Share c < 1? Mmmmmm dF = m * (dx/dt)^2 + c * dx/dt + kx Yes, ok, I agree then. She needs to put on about 2.3573418kg and she will get a speed wobble. That is assuming she is riding Conti Comp and a spoke on her rear wheel is 3% under tension. Link to comment Share on other sites More sharing options...
bruce Posted February 26, 2008 Share I'm an expert on the human body!! But I wont pontificate on the 'wobbliness' of any females body!! Why?! Coz I'm a frigging genius!!! A genius with experience! Link to comment Share on other sites More sharing options...
bruce Posted February 26, 2008 Share c < 1? Mmmmmm dF = m * (dx/dt)^2 + c * dx/dt + kx Stop it, you're exciting me And now my stem length has changed!! Link to comment Share on other sites More sharing options...
The_Break Posted February 26, 2008 Share Well, at least you have increased k then. Should stabilize your bike a bit. Link to comment Share on other sites More sharing options...
THE BODY CENTRE Posted February 26, 2008 Share http://imgs.xkcd.com/comics/duty_calls.pngxkcd.com *mini hijack* ** sorry!** Thanks Edman!! LOVE this site! Link to comment Share on other sites More sharing options...
The_Break Posted February 26, 2008 Share oops, that's k * dx and not x.Still want my discount at the Lab. Link to comment Share on other sites More sharing options...
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