the secret to getting your knee down safely

Originally Posted by northwind

Get your knee down like a pro, even on straights.

lol

It's not that there is more rubber on the road, but more to do with the reduced lateral force acting upon the tyres when you are keeping the bike more upright rather than leaning it right over.

Oooh! Look what I found!

http://www.horsepowergeek.com/forum/...ecent;start=10

[Stu]

Originally Posted by RhythmJunkie

Oooh! Look what I found!

http://www.horsepowergeek.com/forum/...ecent;start=10

And what is that trying to prove?
a) that the contact patch is not the same when you lean a bike?
or b) that the lateral forces are not less if you hang off a bike?

Lowering the C of G doesn't mean that the lateral forces are not reduced.

Stop trying to blind us with science. Northwind has already answered this thread definitevely. Now I just need to find the part number...

Originally Posted by lukemillar

It's not that there is more rubber on the road, but more to do with the reduced lateral force acting upon the tyres when you are keeping the bike more upright rather than leaning it right over.

It is even more complex than that still … there is a sweetspot between lateral forces, ‘contact patch’, rotational force (power) and downward force … if you can increase downward force, you can increase lateral force or rotational force before it ‘sheers’ … hence trying to get the weight rearwards on corner exit and the bike sat up a bit …

Its all clever stuff when you think about it!!

But nothing is a ‘secret’ … a mystery to some maybe, secret, no!!

I like it when you get the lean angle meters on TV when watching MotoGP …. Way

hoppers lean angles are just class

Originally Posted by RhythmJunkie

Oooh! Look what I found!

http://www.horsepowergeek.com/forum/...ecent;start=10

Gulp!

If you're gonna do it on the road be aware that any more than 3 times round a roundabout and the law takes a very dim view, also knee down can be interpreted by some officers as riding without being in full control of vehicle.

See you at the local industrial estate of an evening practicing

And what is that trying to prove? Uh? You didn't read it?
a) that the contact patch is not the same when you lean a bike?Obvious?
or b) that the lateral forces are not less if you hang off a bike?True...so?

Lowering the C of G doesn't mean that the lateral forces are not reduced.Double Uh?

Stop trying to blind us with scienceI'm not...but it looks like someone else is doing a pretty good job!

Originally Posted by SVStu

If you're gonna do it on the road be aware that any more than 3 times round a roundabout and the law takes a very dim view, also knee down can be interpreted by some officers as riding without being in full control of vehicle.

See you at the local industrial estate of an evening practicing

Kneedown IS illegal on the road. The charge is 'due care' IIRC.

And yep 3 times round a roundabout ... nothing stopping you from doing 3 twists then riding off and coming back again though!!

Lets face it, if you are attempting KD and a copper shows, its not like you will keep trying to do it in his presence!! So I can only really see the former ever being a problem.

It makes sense doing it at a deserted roudabout anyway ... if there is a flow of traffic, it'd probably be wise to move on

Damn right there- I've had someone nearly start in front of me while I was on a roundabout increaswing my lean angle (don't have the legwear for kneedown- if I did it currently, I'd not have any legwear- or knee, probably!).

Made me think very carefully about the roundabouts I use for this and time of day!!!

Anyway- if the rozzers get you, you could always argue that you were ensuring that you keep the tyres round by using the sides of them- makes cornering safer etc!