Advanced Driving Hub

GTR1400MAN wrote:But the limit point never splits apart.

As you progress through the corner it slowly moves away from you and as the view of the tarmac opens up it (on a straight road) rushes away from you to infinity ( and beyond ). By its very definition (the point where the two sides of the road meet) it can not become TWO points. As I say, a confusing way to explain this.

I did say 'could be said to be where they split' ;) Other than that, does my explanation make sense?

I'll try and find the diagram and see if I can host it somewhere.

GTR1400MAN wrote: Also, any thoughts on selecting your gear AFTER the LP starts to move away?

Sir John Whitmore mentions it in his RAC Superdriver book, as his preference.

Horse wrote:I did say 'could be said to be where they split' ;) Other than that, does my explanation make sense?

I'll try and find the diagram and see if I can host it somewhere.

I think I need to see the diagram to fully understand. The pic in my head says that's a bit late to be altering line

I can get what they are saying in the book but still think it is a confusing mix of terms and if used with someone new to the concept of limit point even more so (After all we analyse and discuss this in great detail here and I had to read the page several times to grasp what was being said ... and map it to my existing understanding)

Horse wrote:

GTR1400MAN wrote: Also, any thoughts on selecting your gear AFTER the LP starts to move away?

Sir John Whitmore mentions it in his RAC Superdriver book, as his preference.

Driver? Do I really want to be changing gear mid bend on a motorcycle if I can easily avoid it?

GTR1400MAN wrote:

Horse wrote:I did say 'could be said to be where they split' ;) Other than that, does my explanation make sense?

I'll try and find the diagram and see if I can host it somewhere.

I think I need to see the diagram to fully understand. The pic in my head says that's a bit late to be altering line

The best/worst confusion I've heard was a Star Rider Gold instructor, talking about 'breaking your line' in a theory session. We all heard 'braking' as he pointed at the centre of the bend on the diagram . . .

Anyway, here:
https://the-ride-info-new.blogspot.co.u ... -move.html

GTR1400MAN wrote:

Horse wrote:

GTR1400MAN wrote: Also, any thoughts on selecting your gear AFTER the LP starts to move away?

Sir John Whitmore mentions it in his RAC Superdriver book, as his preference.

Driver? Do I really want to be changing gear mid bend on a motorcycle if I can easily avoid it?

It's a really good book, published in 1988.

https://www.amazon.co.uk/Royal-Automobi ... n+Whitmore

Treat yourself!

Horse wrote:Anyway, here:
https://the-ride-info-new.blogspot.co.u ... -move.html

On first view that diagram is VERY confusing. My left to right, top to bottom reading head says that is a right hand bend. After a bit of thought I can see it is a left hander.

I'd certainly be holding position until the green line (or just a fraction before) before adjusting position.

As for the photograph, the limit point is at the T junction at the end, either on the left or right depending which direction you are intending to go, though your focus would be the traffic calming bulge and junction on the right. Ignoring the bulge, does it really matter when it is that far away?

Horse wrote:It's a really good book, published in 1988.

https://www.amazon.co.uk/Royal-Automobi ... n+Whitmore

Treat yourself!

At £399 new or £41+ used I'll take your word for it.

GTR1400MAN wrote:

Horse wrote:As for the photograph, the limit point is at the T junction at the end, either on the left or right depending which direction you are intending to go, though your focus would be the traffic calming bulge and junction on the right. Ignoring the bulge, does it really matter when it is that far away?

Maybe his point is that the limit point is in the junction on the right?

As for the diagram, it would be nice to show both sides of the road. For a long left-hander, we know we don't want to meet an opposite direction vehicle at the centre line. We can choose a line for a straighter exit as soon as we know there is no opposite direction traffic - although we still need to be able to stop by the surprise horizon. As a driver not a rider I am not used to having so much scope for choice of line on a left-hander, but I would have expected you to tighten earlier than the green line.

Yes, I did say in my reply that I'd probably be moving a fraction earlier than the green line. This would be as I had gained enough view into the straight for me to be comfortable to move, even if I hadn't seen all the nearside verge. The width of the bike allowing you to still have some flexibility to adjust again.

In a real world situation with no cross view, rather than some lines on a diagram with no scale, I'd probably be a bit more left all the way round. Sacrificing position/view for safety. Unfortunately, a corner like that would almost certainly mean vehicles coming the other way and encountering a right hand bend would be encroaching on to my side of the centre line.

GTR1400MAN wrote:

Horse wrote:It's a really good book, published in 1988.

https://www.amazon.co.uk/Royal-Automobi ... n+Whitmore

Treat yourself!

At £399 new or £41+ used I'll take your word for it.

There was one for £3 + £2.80 p&p earlier but then I bought it. Sorry.

Jonquirk wrote:

GTR1400MAN wrote:

Horse wrote:It's a really good book, published in 1988.

https://www.amazon.co.uk/Royal-Automobi ... n+Whitmore

Treat yourself!

At £399 new or £41+ used I'll take your word for it.

There was one for £3 + £2.80 p&p earlier but then I bought it. Sorry.

Yes, the cached pages kept showing it, but every time I tried to buy it, it said it was no longer for sale!!!!