Cornering question

[rastuscat]

I want to do the course where I get to push the front and do knee saves like my hero Freddie Spencer. Thats one of yours, eh?

I've tried doing slow speed riding on a Stripple. Awful turning circle. Stunning bike, but crap for rodeo work.

[HenryDorsetCase]

I've tried doing slow speed riding on a Stripple. Awful turning circle. Stunning bike, but crap for rodeo work.

absolutely true. Its hilarious how bad it is... like a fully faired race bike with clipons. Ive always thought its because it shares the frame with the Daytona and thus its steering stops for clipons.

[Zedder]

I do hope that the OP found something useful in the replies.

Speed advisory signs should only ever be taken as a guide. They do not always relate to what is a safe speed for the corner, but can take into account visibility and hidden intersections.

On some roads, they seem to be used to try to slow traffic rather than being related to a safe corner speed. The road from Dome Valley to Mangawhai is an example of this, where some 45 corners can be taken faster than those marked 65.

Sometimes the advisory speeds are too high depending on conditions. Try the Kopu-Hikuai road in winter when there is ice on the road!

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Good post.

Here's a bit of info on how the advisory speeds are calculated etc: https://www.drivingtests.co.nz/roadc...is-sign-mean9/

Apparently they were set in the 1990's and are out-of-date now due to overall speeds being lower and vehicle capabilities being higher.

[Moise]

Really? So what are the speeds based on - cornering forces or approach speeds?

Must have been fun doing all of the corners on the uphill section from Kopu!

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[Zedder]

Really? So what are the speeds based on - cornering forces or approach speeds?

Must have been fun doing all of the corners on the uphill section from Kopu!

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According to the "measured speed before the corner" as stated.

[Moise]

According to the "measured speed before the corner" as stated.

Placeholder.

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[Zedder]

Placeholder.

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All you had to do was read the linked page properly and you wouldn't have needed to ask the question.

[pritch]

I've tried doing slow speed riding on a Stripple. Awful turning circle. Stunning bike, but crap for rodeo work.

I thought that too, and I used it as an excuse to myself. Then I saw a YouTube clip of a Japanese rider on a gymkhana course on a Speed Triple and realised it wasn't the bike - it was me.

On getting a knee down - at the risk of repeating myself. If you are trying to get your knee down you are doing it wrong. In a left hand turn your head should be over by your left hand but that's not what most KBers do. In a l/h turn people move their head and body over to the right hand side of the bike, swivel their hips, and push the bike down. They might get a knee down but it really is as silly as it looks.

That guy in my avatar has a knee down and he isn't even trying. He is quite good though. For an old guy.

[T.W.R]

Geeezus Agostini has a lot to answer for

Fuck the corner your in, you should have that assessed & processed before you're in it....you should be looking through it and looking where you want to be not where you're at.

[AllanB]

Posted 'suggested' cornering speeds have to account for all road users - so logically they are set for say a car towing a boat or caravan driving with a load on a wet road.

If they posted a 'achievable' speed ............ mayhem!


I have noticed every now and then the buggers slip one buy and actually post a realistic speed - gets exciting if, like most road users you 'add' somewhat to the sign .

There is a tight bastard like that in the Lewis Pass.

[Drew]

Oh, now I get it. It's a cock measuring contest

[AllanB]

Oh, now I get it. It's a cock measuring contest

Absolutely. If they did not put the signs there to exceed by factor X you have nothing to measure against

[Moise]

All you had to do was read the linked page properly and you wouldn't have needed to ask the question.

I've read it "properly" twice now, and it still doesn't make sense. What is your understanding?

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[Berries]

I've read it "properly" twice now, and it still doesn't make sense. What is your understanding?

So what are the speeds based on - cornering forces or approach speeds?

It is the cornering force (or side thrust) based on a constant speed through the curve. The constant speed through the curve = the approach speed because you have to have the vehicle settled at a steady speed when you hit the entry of the curve otherwise the readings are all to shit. The approach speed when testing is more than likely going to be lower than the normal approach speed as you have to set the vehicle up. The tests don't take any notice of visibility or hidden intersections. Advisory speeds have also been calculated for every curve on the state highway network based on the geometry of the curve. Occasionally the two sets of data even match, which is nice.

No idea where this drivingtests website is from or why it has been quoted a few times of late on KB but in this case, paragraph four to be exact, their description is correct. How they are set is somewhat irrelevant though, how you deal with them is the main thing and in that regard Madness had it spot on with this post -

I take notice of advisory speed signs. I almost never match my speed to that being advised but I take notice of the number shown and adapt my riding to suit.

Best advice in this thread.

[old slider]

This thread has been awesome, I decided on my born again, dry day only riding adventure, to take each corner I came upon at 15kmh above the recommended speed.

Real Daredevil? yea I know, lol. Only once did I think it was slightly unerving, it was a hard closing left handed 35kmh marked corner that would or could be a tad sensitive if wet, ice or covered in gravel , especially for someone with my limited ability.