64 degrees

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64 degrees

Postby zx899r » Fri Sep 27, 2013 6:51 am

I know it's a Yamaha. ...but in prospective. :o
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Re: 64 degrees

Postby Wattie » Fri Sep 27, 2013 10:43 am

Not bad eh?

I've seen people who have scraped their pegs on the road lay their bike until the peg touches the ground to see how far they lean.
The problem is that the suspension isn't compressed while stationary, which gives a false representation of the lean angle.

But if you actually work out the lean angle in degrees and apply it, then you get what Yamaha have done.
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Re: 64 degrees

Postby fireyrob » Fri Sep 27, 2013 10:52 am

Awesome :kuda:
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Re: 64 degrees

Postby BrettZZR » Fri Sep 27, 2013 11:51 am

Yep - there is a fair bit of suspension compression during lean - calculated purely mathematically
ANGLE - FACTOR (Factor is the what to times the weight of bike and rider by to compress the suspension the same amount)
45 - - - - - 1.41
50 - - - - - 1.55
55 - - - - - 1.74
60 - - - - - 2.00
65 - - - - - 2.37

So at a 60 deg lean your suspension is a compressed as if you had another BIKE AND RIDER strapped to your back at standstill.

This is why hanging off the bike works - by moving the centre of gravity away from the centreline of suspension force you reduce the compressive forces on the suspension and replace it with a sideways component on the tire contact patch (a bit more like a car tire turning).

So the pic is cool from a visual perspective only.

Sorry - beware a bored engineer...

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Re: 64 degrees

Postby robracer » Fri Sep 27, 2013 3:09 pm

Awesome way of putting it Brett
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Re: 64 degrees

Postby Sparks_333 » Fri Sep 27, 2013 5:21 pm

fuuuaaarrrrkkkkk :shock:

I still don't like him though... haha
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Re: 64 degrees

Postby Disco » Fri Sep 27, 2013 8:01 pm

Sparks_333 wrote:fuuuaaarrrrkkkkk :shock:

I still don't like him though... haha


I'll let him know when I talk to him next month ;) :lol:
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Re: 64 degrees

Postby Kermit » Fri Sep 27, 2013 8:44 pm

Disco wrote:
Sparks_333 wrote:fuuuaaarrrrkkkkk :shock:

I still don't like him though... haha


I'll let him know when I talk to him next month ;) :lol:


pfft, yorghey.
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Re: 64 degrees

Postby ZX9R Man » Sat Mar 21, 2015 3:00 pm

I couldn't be bothered.. ;)
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