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Author Topic: Traction control????  (Read 11977 times)

r1ninja

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Re: Traction control????
« Reply #15 on: December 14, 2008, 05:51:15 PM »

if you cut a cylinder doing a slow u turn then you'll topple. A proper traction control system uses a gyroscope to sense lean  and a wheel speed sensor to tell when the tyres slipping
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ZX10R-RACER

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Re: Traction control????
« Reply #16 on: December 14, 2008, 07:22:21 PM »

 [rofl] you need sleep. best you stay away from the cheese before bed to.
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jamma10566

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Re: Traction control????
« Reply #17 on: December 15, 2008, 05:21:29 PM »

if you cut a cylinder doing a slow u turn then you'll topple. A proper traction control system uses a gyroscope to sense lean  and a wheel speed sensor to tell when the tyres slipping
Electronics could quite easily turn off the system below 25 or so mph so you wouldnt topple doing a u turn. As for gyroscopes, ok on a moto gp bike but a little pricey for the sort of bikes us mere mortals get to ride. I never claimed it would be a better way of doing things, just an idea for a different way. The only downside i can see is the possible effect it might have when countersteering to get the bike to drop into a bend but for the fraction of a second that the steering would be off centre i dont think youd even notice it.
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r1ninja

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Re: Traction control????
« Reply #18 on: December 15, 2008, 08:45:40 PM »

Nope, gyros are very cheap. Your system just won't work, what happens when the front wheel goes light and you get a bit of head shake? Or pulling wheelies?  It's too crude and too slow.
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jamma10566

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Re: Traction control????
« Reply #19 on: December 15, 2008, 08:52:15 PM »

You got me on the head shake. Last thing you want is less power in the middle of a slapper. Ooer!
Ah well, it was a thought.
Now, about my idea for a ...
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jamma10566

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Re: Traction control????
« Reply #20 on: December 20, 2008, 03:37:30 PM »

Slight power fluctuations at the same frequency as the head shake might actually help bring it all back in line. I dont know, and i suspect you dont either.
Crude? Same as simple, simple is good.
Slow? No, it would actually react quicker than wheel speed sensors.
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r1ninja

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Re: Traction control????
« Reply #21 on: December 20, 2008, 04:53:47 PM »

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jamma10566

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Re: Traction control????
« Reply #22 on: December 20, 2008, 07:37:00 PM »

Headshakes are high frequency and low deflection oscillations. Like I say, it could help prevent these or end them quicker enabling quicker laps. Full on slappers are pretty much a thing of the past what with decent dampers, geometry and the like. Its easy to tell me that no, this wont work but nobody has actually said why. I think it could be developed into an effective system.

By the way, im not just some muppet with an idea in his head. Im a muppet with an honours degree in mechanical engineering and an IQ of 156.
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ZX10R-RACER

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Re: Traction control????
« Reply #23 on: December 20, 2008, 08:54:21 PM »

so why do the worlds top bikes (moto gp) use wheel speed sensors?
also with your idea how would you program different settings say 1-10 like most good systems.

i have`nt got a degree but i make a living from bikes so im fairly clued up, and i cant see this working because the only way for a decent system to work is by measurements from the wheels,crank speed and gear position.   
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jamma10566

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Re: Traction control????
« Reply #24 on: December 20, 2008, 09:32:46 PM »

Different settings could be programmed by setting the severity of the retardation and also by adjusting the amount of steering deflection that triggers it. Wheel speed difference and crankshaft acceleration are two things that occur when traction is lost in a corner. Steering deviation is another. I know whats out there already works, was just pondering alternatives. I tend to think that someone has already looked into this somewhere and rejected it. I was really just wandering if it had been done and by who. Hoped someone here might know.
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ZX10R-RACER

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Re: Traction control????
« Reply #25 on: December 20, 2008, 09:57:11 PM »

cant possibly understand how you could get it to work.
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scooby

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Re: Traction control????
« Reply #26 on: December 20, 2008, 10:00:35 PM »

I tend to think that someone has already looked into this somewhere and rejected it.

says it all really.  ;-)


 
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jamma10566

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Re: Traction control????
« Reply #27 on: December 20, 2008, 10:11:03 PM »

Might just have to make one and see!
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r1ninja

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Re: Traction control????
« Reply #28 on: December 21, 2008, 08:30:31 AM »



By the way, im not just some muppet with an idea in his head. Im a muppet with an honours degree in mechanical engineering and an IQ of 156.
Sorry to burst your bubble chum but many better mechanical brains than yours couldn't find a solution. It wasn't until electronics became smaller , more powerful and power efficent enough that the traction control systems could be made to work on a bike. 
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jamma10566

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Re: Traction control????
« Reply #29 on: December 21, 2008, 09:12:27 AM »

I know youre probably right but im gonna have to make a very simple version and find out for myself. Just got to find someone whos willing to deliberately try and highside a bike. Im certainly not doing it. Too old and take too long to heal now.
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