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07-10-2012, 02:31 PM
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#76 | |
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Studly Adventurer
Joined: Dec 2011
Location: The Shaky Isles
Oddometer: 714
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Quote:
I have changed my view a little on testing for grip. I used to dab a foot if I was concerned or dab the back brake. The first method is expensive on soles, the second is hit & miss to what you learn. Now, I weigh up what I can see & temper my speed & road position accordingly. If it is slippy I want to be in the best position to deal with it rather than guessing what is going to happen next. On wet clay & gravel, even wet tarmac I'm finding that spinning up the rear briefly in a straight line tells me more about grip than brakes, I think it is a more consistent test of traction because I can find the slip point. Just my thoughts, don't be to harsh! |
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07-10-2012, 02:59 PM
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#77 | |
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Beastly Adventurer
Joined: Sep 2007
Location: Annapolis Maryland
Oddometer: 1,376
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Quote:
The acceleration is probally easier to get the feel for as long as your uncomfortable spinning the rear which is honestly great fun. And off road, you can leave a corner with out wheel spin? I guess my ktm's and right hand didn't get that memo, might make the tire budget a bit cheaper... |
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07-10-2012, 03:11 PM
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#78 | |
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Studly Adventurer
Joined: Dec 2011
Location: The Shaky Isles
Oddometer: 714
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Quote:
Pushing the front when I'm dubious about grip is well beyond my ability.
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07-10-2012, 05:12 PM
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#79 |
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Beastly Adventurer
Joined: Sep 2007
Location: Annapolis Maryland
Oddometer: 1,376
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Just approach it slowly. You don't really know what the limits of traction are until you're over the limit. Being a little over is fun being allot over well...it can be fun.
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07-10-2012, 05:51 PM
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#80 | |
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villagidiot
Joined: Apr 2007
Location: chicagoland
Oddometer: 1,169
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Good stuff. I would help you but can't seem to be able to compose anything better. ALL: Trail braking is an advanced skill bordering on art. My street noobs at Grattan Raceway get told not to trail brake and concentrate their efforts on more important stuff like threshhold braking and picking a good turn-in point and then getting the bike down to full lean in one quick motion. Stuff like that. Trail braking requires smoothness which requires time. It requires a light, to the point of delicacy, touch on the bars and controls. I wouldn't bother talking trail braking to a rider who as yet cannot take one hand, if not both hands, off the bars while cornering at full lean. In the book "How To Toilet Train Your Child In 24 Hours" there is a 3 step test to see if the kid is even ready for the effort. I wish that Nick and some of the other top know-it-alls would come up with some tests to see if riders are ready for the so-called advanced stuff? Recently, Cycle World, Aug. 2012. p. 49 shows a rider's blistered hands from a long day at the track. To my way of thinking, if a rider blisters his hands, something(s) is severely amiss? Blisters are are not a sign of delicate touch on the bars. The "Upper Half Of The Motorcycle" discusses how much braking is still available when the bike is at full lean.
__________________
"beware the grease mud. for therein lies the skid demon."-memory from an old Honda safety pamphlet |
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07-10-2012, 09:16 PM
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#81 | |
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Beastly Adventurer
Joined: Sep 2007
Location: Annapolis Maryland
Oddometer: 1,376
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Quote:
Allot of track day schools dumb stuff down, you get told the wrong thing to prevent bad things from happening. Look at the prevalence of late apex's. The "school line" is almost always late apex _everything_ because the consequences of fucking up a late apex aren't nearly as bad as being early. This dumbing down is lowest common demoniator training. It keeps everything nice and safe and relatively slow, but holds back fast learners to an extent, because you learn the wrong way then learn the right way. The question always remains if you'd have survived learning the right way from the very beginning. As to blisters... Well there's another one of those track day lies no? All control inputs should be as _smooth_ as possible says the instructor to the n00bs. Well define smooth... I can turn so smoothly you'll never feel the G's building up, it's going to be slow around the track. Really when you say smooth you mean bring the tires to maximum traction without exceeding it as quickly as possible which is going to require a progressive application of brakes, throttle and steering (and most likely an overlap of all 3). But when done by a racer it would not feel smooth it's going to feel very abrubt because the brakes are going to come on to maximum very quickly, and then they're going to feather off as lateral acceleration replaces the decreasing brakes, but it won't feel in your classical sense "smooth" to anyone but the operator or the guy looking at the data acquisition that see's the G-force line shoot to 1g deceleration and then without ever coming back to the middle goes directly to 1g lateral acceleration and then with out ever coming back to the middle goes to .3g of acceleration. When you're doing it right on a fast bike you're defiantly hanging on as you move from side to side while hard on the throttle. |
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07-10-2012, 09:30 PM
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#82 |
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Studly Adventurer
Joined: Dec 2011
Location: The Shaky Isles
Oddometer: 714
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I've only had blisters from dirt riding but Casey Stoner reckons P!$$ing on your hands toughens them up.
I do think body position & bar grip is a pertinent thing to think about with braking. When I started practising braking technique I ended up with a lot of weight on the bars which compromised my mobility & control. Dropping your head makes it worse. I had to learn to use my knees in the tank to lessen the weight transfer. Quite alien to begin with. |
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07-11-2012, 02:48 AM
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#83 | |
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Feral Chia tamer
Joined: Feb 2004
Location: Left of the dial. Canton, NC
Oddometer: 2,596
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We are on the same page.
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Mutt'n the custard. On the outside with my back turned. |
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07-11-2012, 01:45 PM
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#84 | ||
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Studly Adventurer
Joined: May 2009
Location: Watertown NY
Oddometer: 797
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Try Using the WHOLE QUOTE next time: The Pace's style of not hanging off in corners also reduces the appearance of pushing too hard and adds a degree of maturity and sensibility in the eyes of the public and the law. There's a definite challenge to cornering quickly while sitting sedately on your bike.
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David 2005 KTM950 Adventure, 2005 Yamaha Vmax, 2002 BMW K1200RS, 2005 Suzuki SV650S, 1991 Honda VFR750, 1990 Honda Hawk GT, 2004 Honda CRF250X, 2000 Buell Blast................ outlaws justice screwed with this post 07-12-2012 at 03:49 AM |
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07-11-2012, 02:05 PM
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#85 |
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Gnarly Adventurer
Joined: Feb 2012
Location: Germany
Oddometer: 246
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Not that we'd give a fuck about looking "mature" or "sensible" in whomever's eyes. Mr. Law stopped me for speeding a few times, but never because of looking immature or insensible.
__________________
Into the dark side of our nature to look we all need. The energy, the passion there is. Afraid of that people are. Pieces of us it holds busy denying we are. |
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07-11-2012, 10:27 PM
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#86 | |
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villagidiot
Joined: Apr 2007
Location: chicagoland
Oddometer: 1,169
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Quote:
Track day schools do not dumb stuff down. Track schools are primarily interested in helping riders learn good stuff and appoach their limits in the safest possible way. Ergo, the school line is the safe line from which everything is adjusted toward more speed as acquired for the day. This is why 'fast' riders who don't bother to learn much in the beginning of the day get passed in the afternoon by the morning's 'slow' riders who did. If one learned anything the right way from the beginning, then survival would be assured. (And all our penmanship would be legible and math errors would be unique and humorous.) But we often don't. Crashing sux and is usually the end of the day at any track school for that rider. Track instructors are often very good riders and very good people. And often they do not come from an educators' background. Thus they learn to teach at the track as best they can. The big buck schools may train their staff in a particular program and maybe offer one-on-one help for a price. Less costly schools have lots of advantages as well as problems. Nick has my respect for writing something that any rider might read and attempt without worrying about the survival rate. YMMV
__________________
"beware the grease mud. for therein lies the skid demon."-memory from an old Honda safety pamphlet |
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07-12-2012, 07:08 AM
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#87 | ||
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Beastly Adventurer
Joined: Sep 2007
Location: Annapolis Maryland
Oddometer: 1,376
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Quote:
Quote:
If you set the bar low, you get low results you set the bar high you get better results. Lowest common demonitator training doesn't help anyone. While the bar is certiantly higher at a track day school for advancement than at a MSF class, The results are similar. As for crashing, that's why most sport bike riders take so long to learn to ride quickly. For many of them front and back slides are scary and you hear them blaming the tire or track and looking for stickier rubber. If they'd learn on a supermoto or mini on a kart track they'd develop much more quickly because they'd learn to use and loose traction. |
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07-12-2012, 08:01 AM
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#88 |
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Beastly Adventurer
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Braking in corners is a frustrating topic for me. It is frustrating because I had a pretty good low-side crash on New Year's eve that still haunts me. I still don't know exactly what I should have done, other than the obvious "slow the fuck down before the corner and pay more attention."
Here is what happened: I was on a rental bike on a motorcycle tour in Chile, riding down the side of a volcano. On the way up, I knew the ride down would be a challenge. The road was in very good condition with no potholes or gravel, but it was very steep up near the top. The switchbacks had very steep elevation changes right at the apex which made everything extremely off-camber. Coming down, I took it very cautious in the switchbacks. I kept my speeds low and wasn't pushing limits. As things leveled out a bit the corners were more sweeping and lacked the steep elevation changes. I relaxed. I was in 3rd gear, again not pushing limits and not worried that a few riders were getting farther out in front of me. At that point, I came into another corner which I thought was just another sweeper. WRONG! It was the last switchback and it had a very nasty elevation drop at the beginning of the corner. SHIT!!! I was probably going 35 or 40 and was completely off the throttle, esentially coasting in 3rd gear. On the plus side, I had been riding with my toes on the pegs and had been swinging my butt off the seat prior to the corners so my body was at least in a good position. I made a distinct decision to lean harder and not grab the brake. I figured it was my only chance. I was in the wrong gear and by the time I saw the corner, the amount of speed I would have needed to scrub was pretty dramatic. I looked through the corner and hung my butt out, weighted the inside peg and pushed the bike as far as possible into the corner. I heard and felt my peg scrape almost instantly. I remember distinctly thinking that was OK. I have dragged pegs before and it didn't upset me. I then heard a second hard part scrapping. That would be the skid plate on my F650GS. As soon as that happened, the bike slid out from under me and I low-sided. Touching the skid plate down levered up my front wheel. At first, niether myself nor anybody in the tour thought it possible for the skid plate to hit before low-siding. I was questioning myself and the order in which I thought I heard and felt things happen, but I remain certain that I heard the second scrape before losing traction. My only explanation is that the extreme off-camber and elevation drop is what made this possible. This was totally my fault. I was just going too fast for conditions. I was relying on engine compression to control my decent and because the road had leveled out, there wasn't much of this anyway. I had relaxed and wasn't ready. So, would brakes have helped or hurt by the time I realized I was screwed? My hunch is that anything I did would have still resulted in a crash and that braking could have made things worse, but should I have tried it? I still don't know. |
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07-12-2012, 09:59 AM
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#89 | |||
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Beastly Adventurer
Joined: Sep 2007
Location: Annapolis Maryland
Oddometer: 1,376
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"Never run out of real estate, traction and ideas at the same time." - Mario Andretti Quote:
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07-12-2012, 11:20 AM
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#90 | |
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Beastly Adventurer
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As you point out, there is a moment when one is past the point of no return and the best is to "make it suck less" and the low-side certainly sucked less than a high side into the railing or down the side of a volcano. |
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