Uh I need a runway, really let me explain

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The discussion centers around modifications and upgrades to a BMW motorcycle, specifically the S1000RR, highlighting various components such as Ohlins shocks, a PUIG windscreen, and Yoshimura accessories. The owner expresses excitement about upcoming track days and advanced training, with aspirations to participate in the Isle of Man TT in the future. Key technical features of the bike are discussed, including its impressive power-to-weight ratio and advanced traction control systems that enhance safety and performance. The conversation also touches on the thrill of riding, the importance of skill in handling high-speed situations, and the desire for safe environments to practice. The owner reflects on personal riding experiences, the appeal of twisty roads, and the challenges of finding suitable locations for high-speed practice. Overall, the thread conveys a passion for motorcycling, technical appreciation for the bike, and a commitment to safe riding practices.
  • #151
Yesterday I went to the only place I would consider buying a set of new or used track day leathers, http://www.vansonleathers.com" , got measured for a suit, they take over 30 measurements, the reason is because the suit is made to work best when sitting, not standing on the bike.

I met and got acquainted with the sales/grizzled racing veteran, Mike, who I could tell when he came over by the way he walked had many racing injuries over the years. He had a great knowledge of tracks up and down the east coast, having raced at most of them over the past two decades. I tried on a one piece suit, and as I said earlier they are tight enough through the chest when standing, enough so that it bothered my breathing a bit because of my sarcoid. He said the suits have to be tight because if you fall and the suit bunches up it traps the skin underneath and can do damage, makes sense.

We looked around the shop and there were a number of suits that had survived crashes up to 160+ mph and really were in very good shape, a testament to their workmanship and materials. We discussed some of his injuries/etc... that I won't go into, but one thing he said I wanted to share. He said many racers if they have been racing long enough have deformed or missing little pinkie fingers. I asked why and he said basically it is because when you fall at high speed your little finger doesn't have the strength to crab and protect itself as other fingers do. Their answer to that problem, you guessed it, they web the gloves pinkie and second fingers together to protect it. Mike related a story of a fellow racer who sustained a nasty pinkie injury and with the season not being over and races to compete in, he shocked the orthopedic surgeon by telling him to cut if off, which he did, so he could race the following week, which he did. Josh Hayes, whose girlfriend/now wife I found out, see this video I posted in http://www.youtube.com/watch?v=uohBhH_G7rE&feature=related" has the ends of both pinkie fingers missing (Mike knows him personally) for this very reason. Needless to say at this point that you can see that this bunch are "different" from the average person engaged in their sport of choice, their sport of passion.

I left the shop humbled, fascinated, and a bit frightened because I was hearing the reality from a veteran racer of what really goes on in their sport. As far as a one piece suit goes, he said when you are ready, we will accommodate you. Lastly, these guys, a friend of his who is a bike drag racer came in in the middle of our conversation will talk about their passion with the same focus and attention they give to their sport, what they have to say is sobering at times, yet despite a lifetime of injuries Mike still loves the sport. he still plays hockey too, and confessed one of the few bones he hasn't broken was his collar bone. I wished him well and will be back when I need to get the suit for track day. He gave me his e-mail and I told him I would send him some links to PF, including this one, so we will see what comes of it, if anything.

Rhody...
 
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  • #152
rhody said:
Yesterday I went to the only place I would consider buying a set of new or used track day leathers, http://www.vansonleathers.com" , got measured for a suit, they take over 30 measurements, the reason is because the suit is made to work best when sitting, not standing on the bike.

I met and got acquainted with the sales/grizzled racing veteran, Mike, who I could tell when he came over by the way he walked had many racing injuries over the years. He had a great knowledge of tracks up and down the east coast, having raced at most of them over the past two decades. I tried on a one piece suit, and as I said earlier they are tight enough through the chest when standing, enough so that it bothered my breathing a bit because of my sarcoid. He said the suits have to be tight because if you fall and the suit bunches up it traps the skin underneath and can do damage, makes sense.

We looked around the shop and there were a number of suits that had survived crashes up to 160+ mph and really were in very good shape, a testament to their workmanship and materials. We discussed some of his injuries/etc... that I won't go into, but one thing he said I wanted to share. He said many racers if they have been racing long enough have deformed or missing little pinkie fingers. I asked why and he said basically it is because when you fall at high speed your little finger doesn't have the strength to crab and protect itself as other fingers do. Their answer to that problem, you guessed it, they web the gloves pinkie and second fingers together to protect it. Mike related a story of a fellow racer who sustained a nasty pinkie injury and with the season not being over and races to compete in, he shocked the orthopedic surgeon by telling him to cut if off, which he did, so he could race the following week, which he did. Josh Hayes, whose girlfriend/now wife I found out, see this video I posted in http://www.youtube.com/watch?v=uohBhH_G7rE&feature=related" has the ends of both pinkie fingers missing (Mike knows him personally) for this very reason. Needless to say at this point that you can see that this bunch are "different" from the average person engaged in their sport of choice, their sport of passion.

I left the shop humbled, fascinated, and a bit frightened because I was hearing the reality from a veteran racer of what really goes on in their sport. As far as a one piece suit goes, he said when you are ready, we will accommodate you. Lastly, these guys, a friend of his who is a bike drag racer came in in the middle of our conversation will talk about their passion with the same focus and attention they give to their sport, what they have to say is sobering at times, yet despite a lifetime of injuries Mike still loves the sport. he still plays hockey too, and confessed one of the few bones he hasn't broken was his collar bone. I wished him well and will be back when I need to get the suit for track day. He gave me his e-mail and I told him I would send him some links to PF, including this one, so we will see what comes of it, if anything.

Rhody...

Worn pinkies... um, I'll take my leather in titanium, ceramic, and steel please! :biggrin:

Seriously though, that sounds absolutely amazing... nothing beats true craftsmanship when it comes to quality.
 
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  • #153
A follow on to my last post, Mike told me of a long time fellow racer who sadly lost his leg below the knee, and after rehabilitation was fitted for an artificial leg. Special accomodations were made so he could race again, which he did. Eventually, he had an on track incident, and his artificial leg was twisted 180% degrees backwards after he crashed. The track safety support person approached him and asked if he was alright, seeing his leg twisted around he was not trying to upset the racer any more than he could.

Obviously, he did not know Mike's friend had an artificial lower leg, he smiled at the safety person, and said, yeah it's no big deal, grabbed his lower limb and twisted it back to it's normal position. The track worker immediately passed out, so both the racer and safety person needed attention that day. True story, or so I was told by Mike. Sadistic, these racers came be at times, no ?

Rhody...

P.S. And what say you Turbo to both of these stories, any comments ?
 
  • #154
Luckily, I have avoided being ground into the asphalt. My only two unintended dismounts were due to accidentally wheelying over backward, and those were many years ago on a sporty 2-stroke.
 
  • #155
turbo-1 said:
Luckily, I have avoided being ground into the asphalt. My only two unintended dismounts were due to accidentally wheelying over backward, and those were many years ago on a sporty 2-stroke.

re bold: :smile:

That's a fantastic way to put it :-p

@Rhody: :bugeye: I understand the love of a sport, but... oh man. I really would prefer to not have my leg or anything else friction-burned and torn.
 
  • #156
A follow up, Josh Hayes wife, Melissa Paris, see link http://www.motoracereports.com/2578/melissa-paris-ready-to-play-hard-ball-for-2010.html" has a story of a finger injury as well:
The crash was so frustrating because it happened so fast… I had absolutely no warning. It was really heart-breaking even without getting hurt. I think it took a week or so for the pain of the shattered finger to catch up with my heart break!

How is your recovery coming along on your surgery and when do you expect to be back on the grid?

Melissa Paris: The recovery is never fast enough. I hate when you have to just let nature do its thing, because it’s so slow. We’re just waiting to see if the bone grows and fills in where I lost some pieces. Maybe we might have to go back and trim the tip of my finger off.

Once Melissa said that, she is hooked on racing big time, I wasn't expecting to find this post, but at least now I can say this addiction is NOT gender biased, at least not in my opinion... Wow...

Rhody... :redface: :rolleyes:

P.S. I will, gulp, be buying a pair of webbed racing gloves, that is for sure. After speaking with Matt and reading these stories I am befuddled why they are not mandatory race gear. Seems like a no brainer to me. This story is almost a year old, so hopefully Melissa is healed and back in form.
 
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  • #157
:bugeye: :

That is my summary of the "pinkie grinding" effect. Part of me is horrified, and the rest is thinking, "that must be a LOT of fun if grinding off a pinkie is just par for the course..."

You're scrambling my delicate noggin!
 
  • #158
Ski racers suffer from hand injuries, too. Not grinding off of fingertips, but sprains and dislocations of little finger or thumb are pretty common. An awkward fall at high speed on hard-pack can wreck your day.
 
  • #159
I dig a little digging and came up with two video's interviewing Josh Hayes in a laid back question and answer session in 2009. He strikes me as calm, matter of fact and for the rigor's he has endured over the years, has his head screwed on pretty well. More about that later. This post will work best if you watch the video's, then give your opinion of my opinion. I hope the makes sense... Anyway, videos first...

http://www.youtube.com/watch?v=CNaNO4jeBBs&feature=related"

http://www.youtube.com/watch?v=LzHPqowlpLM&feature=related"

The main thing I took from his video's was how he described learning the track, braking markers, and early as a racer how he was able to string one corner, then multiple corners, then multiple laps until finally a whole race with intensity through practice and visualization. He says he works harder than most to learn a new track, and admits to being overwhelmed at times with things to remember and do, instead relying on his years of track experience and muscle memory from other race track sections. Something I like to refer to as "flow with intensity". There were a few times he exposed his hands, this video was made over two years ago.

I didn't notice missing pinkie finger ends, but it is now 2011 so that may have changed.

Josh is technical, listens to his data folks, for instance he normally only uses 105 mm of the 125 mm of travel fork travel available. Whereas, in the Ulster 200 video's I posted a few posts ago, on-board fork camera revealed on a couple of bikes that the little ring that showed fork travel was bottomed out on two of the top rider's bike's. Hayes has a "feel" for the bike, for the most part does not use traction control, wheelie control on his Yamaha, mainly because the cross plane crank delivers the power so smoothly as compared to other bikes that fire two cylinders simultaneously, which makes for bigger power pulses and potential to upset the chassis.

Note: at 6:50 in the second video how he leaves a "darkie" on the track, but does not appear to push the front or slide the rear, which is just about the most perfect fast way to negotiate the corner. I like his easy going style, honestly, however, underneath that is a heart of a fierce competitor, without it he never would have been 2010 AMA Superbike champ. His wife Melissa appears to have that same drive as well.

Rhody... :wink:
 
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  • #160
turbo-1 said:
Ski racers suffer from hand injuries, too. Not grinding off of fingertips, but sprains and dislocations of little finger or thumb are pretty common. An awkward fall at high speed on hard-pack can wreck your day.

If I'm going to hurtle at speed with little protection, I'm doing it on a cycle, NOT skiis. I'd say you soft-sold the dangers of skiing frankly. By the same token, your head and a rock, or your head and the pavement... yeah... it ends badly. Of course, a biker is going to be wearing their gear, and road-tested gear... yeah, I'd definitely bike first.

I'm a swimming, fencing, martial arts guy... I like to see my pain coming. :-p
 
  • #161
Grrrr... seems that the 2010 Ulster GP races that appear in posts https://www.physicsforums.com/showpost.php?p=3097266&postcount=92" were removed due to copyright infringement, sad, because I wanted to watch a couple of them last night.

To make amends, I have thrown you a bone, have a looks at these below, not quite as good, now I have to out and buy the 2010 races on Blu Ray, which is not a bad thing, however, it was nice to have them here on the forum.

2010 Ulster Grand Prix - Course Guide


http://www.youtube.com/watch?v=3AAWsOwUc8g&feature=relate"

Ulster GP 2009 - Supersport race


http://www.youtube.com/watch?v=tjK9TPwJO9E&feature=related"

http://www.dailymotion.com/video/xde94p_crash-conor-cummins-rish-road-racin_auto"

2010 Ulster Grand Prix - Conor Cummins Interview


P.S. The crash above was not the reason he was hospitalized, he http://www.crash.net/road+racing/news/160701/2/injured_conor_cummins_confirms_season_is_over.html" in the Senior TT at the Isle on Mann. No video available.
Cummins suffered a back injury, broken arm, dislocated knee and bruising to his lungs when his McAdoo Kawasaki Superbike crashed at the high speed Verandah section of the Mountain course during Friday's Senior TT.
It's too bad they pulled those other video's they were awesome.

Rhody... :mad:
 
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  • #162
rhody said:
Grrrr... seems that the 2010 Ulster GP races that appear in posts https://www.physicsforums.com/showpost.php?p=3097266&postcount=92" were removed due to copyright infringement, sad, because I wanted to watch a couple of them last night.

To make amends, I have thrown you a bone, have a looks at these below, not quite as good, now I have to out and buy the 2010 races on Blu Ray, which is not a bad thing, however, it was nice to have them here on the forum.

2010 Ulster Grand Prix - Course Guide


http://www.youtube.com/watch?v=3AAWsOwUc8g&feature=relate"

Ulster GP 2009 - Supersport race


http://www.youtube.com/watch?v=tjK9TPwJO9E&feature=related"

http://www.dailymotion.com/video/xde94p_crash-conor-cummins-rish-road-racin_auto"

2010 Ulster Grand Prix - Conor Cummins Interview


P.S. The crash above was not the reason he was hospitalized, he http://www.crash.net/road+racing/news/160701/2/injured_conor_cummins_confirms_season_is_over.html" in the Senior TT at the Isle on Mann. No video available.
It's too bad they pulled those other video's they were awesome.

Rhody... :mad:

Instant email notifications... and things...

I saw them, and enjoyed them. These are good too!

edit: Oh, and dislocated knee is one of the most viscerally UGLY injuries, even if it can be quite minor.
 
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  • #163
It has been since Feb 22, where have I been ? Well nismara, turbo you are going to like http://www.youtube.com/watch?v=y_8m8i6JqOg&feature=related"). I would love to have this car, the head to head versus bike is interesting, but, this little car beats the fastest car in the world (Bugatti Veyhron) around this small track by 1.7 seconds, now that in itself is phenomenal. Too bad they cost 225,000 $

Rhody... :smile:

P.S. The hayabusa engines can easily be modified to deliver almost 1000 hp (500 per engine) with a set of turbo's, but the Atom's chassis, brake and suspension systems could probably not handle the load. Smart move on Atom's part, however, because a monster Atom cannot possibly be far behind this example. God knows what that will cost.

Oh, and one more thing, the Atom only weighs in at 1213 lbs, amazing. It's secret is a flat power curve with amazing torque, making the handling manageable, production of the 25 units is complete and all are sold.

One more http://www.youtube.com/watch?v=EglLi6nZnZU&feature=player_embedded#at=249" for you, a little campy (the announcer that is) but the riding scenes are good.
 
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  • #164
Just ordered a Contour HD 1080p wearable camera from Amazon, should be interesting when coupled to the new bike, and come in handy when selling OEM parts from the bike which were replaced by custom ones. Much easier than uploading pictures, a few minutes of high res video and all items can easily be seen inspected by people wanting to buy parts. If this HD camera works as anticipated I will buy a second one for track day and riding in general. There may be other uses for it I haven't even dreamed of yet.

Rhody... :biggrin:

P.S. Anyone have one already and haven any interesting video's posted or interesting stories to tell, we are all ears...
 
  • #165
Wow... faster than the Veyhron... Oooooooooh.

I love it all, and if you strapped me to one I'd leave a trail of tears and worse fluids in my wake.

That's bloody FAST!
 
  • #166
Well, with the weather in the 50's and rain on the way, but not quite here I took the FJR out for a 40 mile loop, near where I live mostly through the woods, secondary roads. The interesting part comes when about 200 degrees behind me at a 10 degree angle about 15 feet above my head, a Harris hawk barely cuts in front of me, flying about 35 mph, almost matching my speed I look up at he sees me and flares off to the right, I get a good look at his tail feathers and am pretty sure it was a Harris.

The whole episode took less than one quarter of a second. I didn't think much about it at first, but since I have been taken brain training to extends my peripheral view by 15 to 30% wonder if I would have seen it without it. I have been at it about 3 weeks now and taken 8.5 hours of it in 40 minute chunks, and seen some modest, if uneven improvement in my focus and ability to get the right responses. Time will tell after another two months. With that small observation today, I would say I am off to a good start. I just took a quick gander at pics (see thumbnail) of the bird, yep, that's what I saw, beautiful BTW. Not bad for a quarter second glimpse.

Rhody... :wink:
 

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  • #167
Hawk
 

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  • #168
Ahhh raptors... interesting and lovely birds.
 
  • #169
Interesting http://www.youtube.com/watch?v=W5v36v2zpqQ" of contour, drift and gopro camera's 730, 1080p, I kind of like the Drift's color and balance (daytime) but bet it could be achieved with filters, and I like the contour's night rendering, everyone's eye are different so I realize what may suit me may not suit others. Interesting side by side tests on bike trails and at night. Opinions are welcomed.

I just did a quick tally of the things added to the bike and the other changes, paint, powder coat of existing parts, and came up with the number, thirty two . That blew me away a bit, I shouldn't have been surprised, because this little project has taken four months, and will be complete in about a week and a half. I will then post the final list of parts, and modifications to the beast, as well as some some professional photos, and maybe a video if I can get the hang of editing with the new Contour HD Camera.

While on the subject of HD Video, here are a few examples of the GoPro and Contour camera's with the BMW on track.

http://www.youtube.com/watch?v=rSZSJlS59cY&feature=related"
http://www.youtube.com/watch?v=bzwIYq0-3Ec"
http://www.youtube.com/watch?v=hWTgF8H3B9I&feature=related"

On my last ride over the weekend with the FJR I did some testing, have been having intermittent sudden up/down, left/right positional vertigo. To see if this was going to hinder and endanger my riding the new faster bike, I practiced two or three maximum takeoff through 2nd gear acceleration runs and max braking exercises. So far, knock on wood, am good to go. I didn't put my carcass flush on the tank however as I would on the track, however. If I get bad vertigo while pushing the nausea could mean puking , not a fun thought to consider while wearing a helmet.

http://contour.com/stories/1011011440-ktt-infineon-stanton"
http://contour.com/stories/1011011540-ktt-infineon-stanton"

Finally, Paul Taylor of Taylor Racing shows the http://www.youtube.com/watch?v=FUHOVzFJXYQ&feature=related" to install my exhaust (Turbo, you might like this, hehe). After seeing this video for the first time, I can see where my mechanic may have made a small mistake or two, which could have caused fitment problems that he had while installing the exhaust for the first time. I sent the video to him to see if he used the brackets/spacers, etc... the correct way. Of course Paul, who built the system makes it look easy because he designed and built the system, and some of his installation tricks are not evident in the instructions provided.

Here is a http://www.youtube.com/watch?v=zwMKjcMjSI8" of the HP/Torque Comparison in rain/sport and race mode. One thing I learned from Paul Taylor video is that backfire spit unburned fuel igniting sound will smooth itself out after 50 miles of riding as the fuel injection system self adjusts to the new geometry and airflow of the Taylor Exhaust.

Rhody... :-p
 
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  • #170
Rhody... you post the sexiest things, and damn if those aren't amazing. I think the one on the right seems more stable in terms of suspension, but the middle seems to take the biggest leans and remain stable.

I like that point of view a LOT, especially in HD.
 
  • #171
Details... details. I just ordered a carbon fiber front fender from an after market supplier in Japan of all places, hope it gets here in the next two weeks, shipping was steep too, but cheaper than BMW's offering, even with shop discount.

I want to take a minute an talk about the bikes ability to "stick" to the pavement, specifically at the rear wheel, first, have a look at this http://www.youtube.com/watch?v=lbiIn0biadY&feature=related", rather old but it has a sequence that makes my point perfectly. Fast forward to 5:50 to about 5:57, and you will see the R1's rear frame flexing from side to side under corner loads. Now checkout the thumbnail at the bottom of the post. This is from Yamaha MotoGP's Team's evolution of stiffness changes from 2004 - 2009. Notice how vertical and torsional stiffness has gradually risen since 2007 - 2009, and how lateral stiffness had been relaxed and raised just a bit especially in the past two years. Now picture the video from 5:50 - 5:57 in your mind once again. The secret of higher corner speed lies in the ability of the frame to flex from side to side (longitudinal force). Yamaha is known for its ability to carry more corner speed than just about another other bike manufacturer on the circuit, it rewards a rider who is smooth and almost Zen like at the controls, Someone like World MotoGP Champs Valentino Rossi and the newly crowned Jorge Lorenzo in 2010. A second benefit is the bikes ability to suppress "chatter" which is when the front and rear suspension don't smoothly follow row and bumps, which slows the cornering and causes the riders to feel less than confident while pushing it on the track.

I can't prove this because I don't have the data like I do for the Yamaha M1 GP bike, but BMW has had chatter problems with my 1000RR, and I am told that they have addressed and fixed most of the "chatter" issues with this years model. That will have to wait to be seen, but if I experience chatter of any sort from hard braking and/or row and bumps on the track or on the street I will report back.

Rhody... :biggrin:

edit: I almost forgot, got the Contour HD camera today, no instructions, everything is simple and instinctive, got extra battery and 16 gb SD card, those things are so tiny, it is hard to believe that 16 GB of info can fit on them, amazing. Once I get a couple of decent mounts I will post some pics and movies of some on my antics. It should be an interesting learning experience.
 

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  • #172
rhody said:
Details... details. I just ordered a carbon fiber front fender from an after market supplier in Japan of all places, hope it gets here in the next two weeks, shipping was steep too, but cheaper than BMW's offering, even with shop discount.

I want to take a minute an talk about the bikes ability to "stick" to the pavement, specifically at the rear wheel, first, have a look at this http://www.youtube.com/watch?v=lbiIn0biadY&feature=related", rather old but it has a sequence that makes my point perfectly. Fast forward to 5:50 to about 5:57, and you will see the R1's rear frame flexing from side to side under corner loads. Now checkout the thumbnail at the bottom of the post. This is from Yamaha MotoGP's Team's evolution of stiffness changes from 2004 - 2009. Notice how vertical and torsional stiffness has gradually risen since 2007 - 2009, and how lateral stiffness had been relaxed and raised just a bit especially in the past two years. Now picture the video from 5:50 - 5:57 in your mind once again. The secret of higher corner speed lies in the ability of the frame to flex from side to side (longitudinal force). Yamaha is known for its ability to carry more corner speed than just about another other bike manufacturer on the circuit, it rewards a rider who is smooth and almost Zen like at the controls, Someone like World MotoGP Champs Valentino Rossi and the newly crowned Jorge Lorenzo in 2010. A second benefit is the bikes ability to suppress "chatter" which is when the front and rear suspension don't smoothly follow row and bumps, which slows the cornering and causes the riders to feel less than confident while pushing it on the track.

I can't prove this because I don't have the data like I do for the Yamaha M1 GP bike, but BMW has had chatter problems with my 1000RR, and I am told that they have addressed and fixed most of the "chatter" issues with this years model. That will have to wait to be seen, but if I experience chatter of any sort from hard braking and/or row and bumps on the track or on the street I will report back.

Rhody... :biggrin:

Hmmm... chatter sounds like it could lead to a loss of control... such a mild name! :smile:
 
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  • #173
nismaratwork said:
Hmmm... chatter sounds like it could lead to a loss of control... such a mild name! :smile:
Rhythmic variations in steering control or traction are NOT good on two wheels. Thus the attention paid to chassis and suspension to make the tires work together in demanding conditions.
 
  • #174
turbo-1 said:
Rhythmic variations in steering control or traction are NOT good on two wheels. Thus the attention paid to chassis and suspension to make the tires work together in demanding conditions.

So... what might be called a 'potentially fatal oscillation' is reduced to, "chatter"?!


I love your bikes guys, but you're out of your minds, you know that right? :smile: I'd sooner try to tame a wild horse approaching it only from behind, armed only with twine.
 
  • #175
nismaratwork said:
So... what might be called a 'potentially fatal oscillation' is reduced to, "chatter"?!
Well, essentially.

nismaratwork said:
I love your bikes guys, but you're out of your minds, you know that right? :smile: I'd sooner try to tame a wild horse approaching it only from behind, armed only with twine.
When I was into sport bikes, I did a lot of crazy stuff. When I started hopping up Harley cruisers (Fat 16" wheel on the back, really skinny little tire on a 21" laced wheel in the front), it was beyond crazy in some respects. There is a tremendous imbalance in tire-patch areas in these designs, and given that there is so much weight-transfer to the front during braking, and so little contact-area in the front, ... well, you can imagine the stuff that a home-builder might have to deal with.
 
  • #176
turbo-1 said:
Well, essentially.

Heh... I'm harkening back to "Sunshine Units".

turbo-1 said:
When I was into sport bikes, I did a lot of crazy stuff. When I started hopping up Harley cruisers (Fat 16" wheel on the back, really skinny little tire on a 21" laced wheel in the front), it was beyond crazy in some respects. There is a tremendous imbalance in tire-patch areas in these designs, and given that there is so much weight-transfer to the front during braking, and so little contact-area in the front, ... well, you can imagine the stuff that a home-builder might have to deal with.

Wow... still that sounds like a lot of fun, but damn, that must have been downright treacherous!
 
  • #177
nismaratwork said:
Wow... still that sounds like a lot of fun, but damn, that must have been downright treacherous!
If you want to be able to power through tight turns on curvy mountain roads, you'd better better tune your suspension. The parts guy at the local local Harley dealership asked me one time "Why do you need this much fork-oil?" and I told him I was buying extra for an indie bike shop. I actually needed extra because I was tuning my front suspension in hard handling. The fork oil is the major damping element in the front shocks, and it is critical in H-D cruisers due to the imbalance in the size of the tire-patches.
 
  • #178
Just watching AMA Pro Racing on the Speed Channel at the Daytona 200, and they stopped the racing because a racer lost the front end on Dunlop tires (high ambient temps) coming off the banking. Out of concern for rider safety, they stopped the race and Dunlop is trying frantically to find replacement front tires for the bikes, the track has been resurfaced last winter, and not a lot of testing has been done on the track with high temps, 118.4 degrees on the track and the tires cannot supply needed grip at those temps so they have stopped the race. Dunlop is embarrassed, and admits they did not test the tires with this high of track temps. The tires even on a cool day after a few laps at 180 - 200+ mph are hot enough not to be able to touch, 120+ F. Apparently, a combination of new road surface 9greasy perhaps) and track temps made the racing unsafe. Interesting, eh ? This is being televised too, imagine all the gate revenue being wasted because of this. There will be major repercussions because of this, and I imagine a fair amount of finger pointing. I never have seen this ever happen before. I was excited to see some racing, but it is not to be. At least not today.

Rhody... :redface:

P.S. I wouldn't be a bit surprised to see that the solution to this problem is a small amount of roughing up of the new smooth track surface. Will follow up with what they came up with for a solution. Funny times we are faced with.
 
  • #179
Wow to both previous posts...
 
  • #180
Now here is a story that is touching and requires true love and patience...

http://www.youtube.com/watch?v=i_5wv63VT5s&feature=related"

I hope in an emergency the passenger can either take the controls or talk her through any issue, she seems to be doing just fine however. I would not be so brave as to ride on the back as co-pilot, however. She has a serious concentrated look on her face, but seems steady and calm. Pretty good for her first time, on an uninhabited track.

Rhody... :redface:

P.S. And http://www.youtube.com/watch?v=zx2ZCK6N8eY&feature=related" is the boyfriend, husband I am sure the girl above is glad to not have had. The video speaks for itself. Oh, the road rash alone has me twitching.
 
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