The Rev Counter - The Motorbike Community Click to see demographic‘s profileClick to see PG‘s profileClick to visit this Sponsor

These advertisements are removed when you register and become a TRC Supporter / Sponsor member.

"Weaving under braking or emergency stop" thread in "Staying Alive"
Where are you looking while braking?...


Thread Tags: braking, emergency stop


Go Back   Homepage > Community @ The Rev Counter > Motorbikes - In Depth > Staying Alive
Register Blogs Forums TRC Trader Reviews Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old 27-02-08, 12:55   #16 (permalink)
Senior Member
 
Horse's Avatar

 
Join Date: Dec 2007
Posts: 3,210
Casino cash: £228550
Thanks: 7
Thanked: 50/46
Default Re: Weaving under braking or emergency stop

Where are you looking while braking?
Horse is offline   Reply With Quote
These advertisements are reduced in size when you become a registered member and removed when you become a TRC Supporter / Sponsor member.

Old 27-02-08, 13:31   #17 (permalink)
711
Senior Member
 
711's Avatar

 
Join Date: Jan 2008
Location: Smoke
Posts: 373
Casino cash: £223350
Thanks: 5
Thanked: 0/0
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by Horse View Post
Where are you looking while braking?
Errm...a bit embarrassed to admit this but on some of the stops I had picked a place a wanted to stop before, and looked at that, so for a few of them where I braked late I might have ended up looking at..errm..the front wheel? Doh!!

This is not a good thing is it? I've just realised that by doing that I've basically been training myself to target fixate!!!! OMFG!! What a prize winning t**t!!

I've read and practised lots of stuff about vision before as well. I can't actually remember now if the wobbly stops were the 'fixated' stops. Oh dear!
711 is offline   Reply With Quote
Old 27-02-08, 13:37   #18 (permalink)
Senior Member
 
Horse's Avatar

 
Join Date: Dec 2007
Posts: 3,210
Casino cash: £228550
Thanks: 7
Thanked: 50/46
Default Re: Weaving under braking or emergency stop

Better that you find out now!

Talk yourself through it:

- Head an eyes up, looking well ahead - as far as you can, pick a point at head height.

- Relax your shoulders

- Squeeze the brakes, as you feel the weight in your elbows, squeeze harder on the front

Where you stop is not important for a quick stop, it's stopping (and 'how' ) that's important.
Horse is offline   Reply With Quote
Old 27-02-08, 14:42   #19 (permalink)
Member

 
Join Date: Feb 2008
Location: Brizzel
Posts: 42
Casino cash: £146750
Thanks: 0
Thanked: 0/0
Default Re: Weaving under braking or emergency stop

oops, "practice makes permanent" as Spin would say
If you know you have budget forks & use them all up during e-stops that isnt the end of the World, just bear in mind that they will tend to lock the front if you then hit a bump, & be more prepared to back off quickly & re-apply. Again, all stuff you're better of finding out now!

Rubber Side Down
TFDodo
VFR750, CBR400
We've seen it all - Bonfires of trust, flashfloods of pain...

"you only get away with it
... until you don't"
tfdodo is offline   Reply With Quote
Old 27-02-08, 14:48   #20 (permalink)
Senior Member
 
Horse's Avatar

 
Join Date: Dec 2007
Posts: 3,210
Casino cash: £228550
Thanks: 7
Thanked: 50/46
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by tfdodo View Post
oops, "practice makes permanent" as Spin would say
Wonder where he learned that little gem?


http://www.visordown.com/forum/forum...160045&V=2&SP=


Contrary to popular belief, practice does not make perfect. Practice makes permanent
Horse, submitted by The Spin Doctor

So practice the perfect
Scarver, submitted by Horse
Horse is offline   Reply With Quote
Old 27-02-08, 16:41   #21 (permalink)
Senior Member

 
Join Date: Jan 2008
Location: Kent, but also train in Oxford
Posts: 1,988
Casino cash: £489425
Thanks: 24
Thanked: 61/52
Send a message via MSN to The Spin Doctor
Default Re: Weaving under braking or emergency stop

Quote:
- Head an eyes up, looking well ahead - as far as you can, pick a point at head height.
"Errrrr... where did that air go that I was planning to stop at?"

Quote:
Wonder where he learned that little gem?
Scarver... I do remember you see


Sponsor Page XMAS OFFERS Blog Website Courses Riding Tips Shop
NEW - online e-course

The dull copyright bit - feel free to nick it for personal use. If you want to reprint it for your club, I'd like a mention as author. Otherwise hands-off. Full terms

"Force has no place where there is need of skill" Herodotus 450BC
The Spin Doctor is offline   Reply With Quote
Old 27-02-08, 17:01   #22 (permalink)
Senior Member
 
Horse's Avatar

 
Join Date: Dec 2007
Posts: 3,210
Casino cash: £228550
Thanks: 7
Thanked: 50/46
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by The Spin Doctor View Post
"Errrrr... where did that air go that I was planning to stop at?"
In an e-stop stability is more important, I would say, than stopping at a particular 'point', and peripheral vision will help too.


Quote:
Originally Posted by The Spin Doctor View Post
Scarver... I do remember you see

Read the post again . . . and the FAQ you wrote
Horse is offline   Reply With Quote
Old 27-02-08, 17:11   #23 (permalink)
Senior Member

 
Join Date: Jan 2008
Location: Kent, but also train in Oxford
Posts: 1,988
Casino cash: £489425
Thanks: 24
Thanked: 61/52
Send a message via MSN to The Spin Doctor
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by Horse View Post
In an e-stop stability is more important, I would say, than stopping at a particular 'point', and peripheral vision will help too.




Read the post again . . . and the FAQ you wrote
Bum... you're right!



On the e-stop thing, I know what you're saying, but you do need a target somewhere... generally when practicing I'll have a mark in mind where to start braking, and try to perfect the technique from that point - that's generally going to be the road surface or something near it. It's not quite like target fixation when planning to avoid something by steering.

Sponsor Page XMAS OFFERS Blog Website Courses Riding Tips Shop
NEW - online e-course

The dull copyright bit - feel free to nick it for personal use. If you want to reprint it for your club, I'd like a mention as author. Otherwise hands-off. Full terms

"Force has no place where there is need of skill" Herodotus 450BC
The Spin Doctor is offline   Reply With Quote
Old 27-02-08, 19:16   #24 (permalink)
Senior Member
 
Horse's Avatar

 
Join Date: Dec 2007
Posts: 3,210
Casino cash: £228550
Thanks: 7
Thanked: 50/46
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by The Spin Doctor View Post
On the e-stop thing, I know what you're saying, but you do need a target somewhere... generally when practicing I'll have a mark in mind where to start braking, and try to perfect the technique from that point - that's generally going to be the road surface or something near it.
What I try to encourage in terms of 'vision' for practising is two things:
Initially
- The 'fixation' point is a long way off - typically 100yds or more
Concentrate on the technique (again in two parts: braking, then build to firm braking), not the location.

Subsequently
- Accuracy; this means it can't be a full-on e-stop, because then miimum distance is the over-riding factor, instead this is braking to stop at a point, but remaining aware of it in peripheral vision.

I have a 'rule' for the accuracy that the trainee doesn't turn and look at me until they've stopped, then they can look around and grin
Horse is offline   Reply With Quote
Old 28-02-08, 12:30   #25 (permalink)
Senior Member
 
Splat's Avatar

 
Join Date: Jan 2008
Location: Lost in space
Posts: 2,028
Casino cash: £225485
Thanks: 5
Thanked: 11/10
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by 711 View Post
I've been out today practising the counter leaning technique that Spin taught me at the weekend, and decided to have a go at some emergency stops whilst I had free reign of a large car park.

Most of these went OK, but on a couple I started to get a really nasty weave under max braking. I didn't have to back off the brakes much, but it felt that if I'd not reduced braking effort the front would have tucked or slapped.

I've noticed this a couple of times before whilst track riding and having the anchors out hard for hairpins.

Is this mostly down to locked/tense arms putting steering action into the bars during the stop, or are there other factors that can affect this?

Thanks in advance!
I have almost never been able to lock the front in a straight line. In other words, whenever I've locked the front, I've almost always had a tankslapper. I filed these facts under "that's life", along with why is the sky blue and why do things fall down.

However, Horse showed me that it needn't always be so (read his advice above), which is seriously messing up my mental filing system.
Splat is offline   Reply With Quote
Old 28-02-08, 13:23   #26 (permalink)
711
Senior Member
 
711's Avatar

 
Join Date: Jan 2008
Location: Smoke
Posts: 373
Casino cash: £223350
Thanks: 5
Thanked: 0/0
Default Re: Weaving under braking or emergency stop

The process that I was using was to pick a spot, marked by a line on the surface, and then try braking closer and closer to that point on each run.

In retrospect, I don't know if that was such a good approach. Perhaps next time the best plan would be to brake at that point and pretty much ignore where the stop finally happens, at least until the stop is done.

Thinking about it, by picking a point and edging closer and closer to it, I was putting myself under pressure to stop before that point even though on some of the runs there was no chance of me being able to make it. Hence squawking tyres and bottomed out forks, and wobbles which sound like have been, at least in part, caused by tension and poor vision.

Perhaps even picking a point to start braking at is distracting; if the purpose of the exercise is to feel what the bike is doing at various levels of braking effort, I guess where you begin and end is not that relevant, car park space depending of course
711 is offline   Reply With Quote
Old 10-03-08, 20:03   #27 (permalink)
Likes corners
 
Quickshift's Avatar

 
Join Date: Mar 2008
Location: London
Posts: 923
Casino cash: £593040
Thanks: 15
Thanked: 17/16
Default Re: Weaving under braking or emergency stop

Make sure your front suspension settings are the same on both sides. I upset the front end of a bike by accidentally adding compression damping to one side and reducing it on the other. If the preload is different on each side, it'll make the back end swing either left or right if it leaves the ground under heavy braking although I forget which way corresponds to which side is set higher.

A 5 PSI drop in front tyre pressure is enough for the front end to start feeling really quite nasty under hard braking.
Quickshift is offline   Reply With Quote
Old 10-03-08, 20:51   #28 (permalink)
24 Hour
 
Velocette's Avatar

 
Join Date: Jan 2008
Location: Bristol
Posts: 3,600
Casino cash: £457050
Blog Entries: 2
Thanks: 36
Thanked: 26/25
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by Quickshift View Post
Make sure your front suspension settings are the same on both sides. I upset the front end of a bike by accidentally adding compression damping to one side and reducing it on the other. If the preload is different on each side, it'll make the back end swing either left or right if it leaves the ground under heavy braking although I forget which way corresponds to which side is set higher.

A 5 PSI drop in front tyre pressure is enough for the front end to start feeling really quite nasty under hard braking.
I can't see that happening as the fork sliders wheel spindle and brace move as aunit so the damping value just averages out. Some forks have a compression damper in one leg and a rebound damper in the other and work perfectly.
Velocette is offline   Reply With Quote
Old 10-03-08, 21:06   #29 (permalink)
Speeding
 
gotpastyou's Avatar

 
Join Date: Jan 2008
Location: Stoke on Trent
Posts: 613
Casino cash: £252300
Thanks: 2
Thanked: 3/3
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by Velocette View Post
Some forks have a compression damper in one leg and a rebound damper in the other and work perfectly.
Is the right answer..... Gen 2 Fazer 1000, and mine was a great handling bike..

"..And the young, they can't do as hoped
'cause they can't see beyond ... today.
The wisdom that the old can't give away..."

gotpastyou is offline   Reply With Quote
Old 11-03-08, 07:11   #30 (permalink)
Likes corners
 
Quickshift's Avatar

 
Join Date: Mar 2008
Location: London
Posts: 923
Casino cash: £593040
Thanks: 15
Thanked: 17/16
Default Re: Weaving under braking or emergency stop

Quote:
Originally Posted by Velocette View Post
I can't see that happening as the fork sliders wheel spindle and brace move as aunit so the damping value just averages out. Some forks have a compression damper in one leg and a rebound damper in the other and work perfectly.
Yup, I know that's how it should work. The compression mis-adjustment was on my bike so I know it made a difference. A pro stunt rider explained about the issue with preload to me, he does adjust the preload on one fork leg to keep the bike straight during rolling stoppies.
Quickshift is offline   Reply With Quote
Reply

Bookmarks

Tags
braking, emergency stop

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT. The time now is 02:56.


Powered by vBulletin® - Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.2.0
Term, Conditions & Privacy · Unless member submitted, the contents of this webpage are copyright © Dragon Tree. All Rights Reserved · Advertise with TRC