worlds fastest dirt bike

[Good]

Maybe if someone makes a run with their tires pumped up real hard to counteract this, and then compare that run with a low pressure run.  I know mine likes to bounce around at high speeds.

[mdw471]

117 mph stock

Pretty Cool huh?!?

117.529 m.p.h. over a flying mile.....I carry the timeslip in my wallet.

http://www.youtube.com/watch?v=SvGCE1ZzCag&feature=related

Stewart tuned the motor to run with a stock carb and exhaust and burn regular 110 leaded race gas

The bike was geared somewhere past the moon. A lot of effort was also spent on reducing rolling / mechanical resistance.

Mark

[Danger4u2]

Hey Mark, did you balance your tires and all?

I have never tested this idea, but I wonder if the tire pressure typically run in knobbies would allow an aweful lot of centrifical stretch of the tire sidewall. All that extra material has to do something....maybe wobble?!?

Mark

I did my little speed run on the way back to camp.  Allot of the knobs had chunks cut out of them because of the rocky conditions of our 10 hour ride.    I kind of wiggled the bars to see how stable the bike was and it did not feel safe at all.  I'll try the damper at one click, with the DOT dual sport tires.  I think 80 is all I want to achieve.

[KX Newfie]

Think i'm gonna try mine...gps i spose. My bike is modded, & it is wicked sick.
Gonna be interesting.
Always safety in mind ofcourse....i've been  120 on some of my modded 650 thumps...& felt comfortable....we'll see how comfy the K-5 is.
I'll post exactly what i get.

[k5abuser]

the tires grow at speed and when the pressure is low it allows the bike to drift ( like when you ride in the sand . you let the bike go where it wants and just ride don't fight ) .danger check you head stem bearings for tightness. if it lossens up it can cause that to . maybe drop your forks up in the triple tree clamps about a half inche.. or send it to me and i will ride it till i find the problem . ill ride it easy . promise

[alan]

wOw! SEE WHAT YOU MISS WHEN YOU ARE OUT OF TOWN!

[k5abuser]

welcome back alan . thanks for inviting all us . 

[demographic]

What parts have to remain on the bike in order for it to qualify as a dirtbike?

Just wonderin like
Engine, frame, and subframe or does it still have to have the same wheels and forks?

[mdw471]

What parts have to remain on the bike in order for it to qualify as a dirtbike?

Just wonderin like
Engine, frame, and subframe or does it still have to have the same wheels and forks?

Well......this started when I saw the F2 guys promoting their Honda CRF as the W'sFDB at 121mph. With Stewart working on the motor and myself on the body/frame, we followed the F2 guys lead and ran in the same class.

As far as what defines a dirt bike or iron head harley or busa or XXXXX.....this is an especially tough question in LSR. It seems that a few things are 'socially' required for a bike to be considered something other than a purpose built land speed bike.

Firstly, 500 units need to be manufactured and available for sale. This keeps a works tz250 from slapping around an rd250lc.

The engine and frame should be from the same manufacture.

Finally, often competitors try to keep something unique or specific to the bike. I kept the stock tank and radiator shrouds. Everyone recognized it was a dirt bike, but very few knew how big the engine was.

Keep in mind the competition rules don't care what anyone 'calls' the bike. My comments are directed toward the arguement of once you stretch the swing arm, lower the suspension, and put a different seat on it is not a dirt bike anymore.

What about hill climbers, dirt track bikes, or dune bikes??   

Mark

as a side note......I am happy we bettered 'the 124mph KTM' Last year the F2 guys went 121 and reported getting tons of hate email and links to the KTM page!

[demographic]

So, turning one into a two stroke steel spined Roland Sands style supersingle is out of the question then?
http://uk.youtube.com/watch?v=mhdZiVM-ovI&feature=related
http://uk.youtube.com/watch?v=JH3Sdmit29Q

[BDI]

What parts have to remain on the bike in order for it to qualify as a dirtbike?

Just wonderin like
Engine, frame, and subframe or does it still have to have the same wheels and forks?

Well......this started when I saw the F2 guys promoting their Honda CRF as the W'sFDB at 121mph. With Stewart working on the motor and myself on the body/frame, we followed the F2 guys lead and ran in the same class.

As far as what defines a dirt bike or iron head harley or busa or XXXXX.....this is an especially tough question in LSR. It seems that a few things are 'socially' required for a bike to be considered something other than a purpose built land speed bike.

Firstly, 500 units need to be manufactured and available for sale. This keeps a works tz250 from slapping around an rd250lc.

The engine and frame should be from the same manufacture.

Finally, often competitors try to keep something unique or specific to the bike. I kept the stock tank and radiator shrouds. Everyone recognized it was a dirt bike, but very few knew how big the engine was.

Keep in mind the competition rules don't care what anyone 'calls' the bike. My comments are directed toward the arguement of once you stretch the swing arm, lower the suspension, and put a different seat on it is not a dirt bike anymore.

What about hill climbers, dirt track bikes, or dune bikes??   

Mark

as a side note......I am happy we bettered 'the 124mph KTM' Last year the F2 guys went 121 and reported getting tons of hate email and links to the KTM page!

 I would like to come play with you guys next year but I have a very hard time figuring out the rules I went to the website you gave me but things seemed very vague to me. It discouraged me from going this year. I don't have a problem backing my engine down in ccs but I didn't think I could run my bike in that class because my bike is a 250 with a 500 motor in it. Or can I because my bike is a kawasaki chassis with a kawasaki engine.

[gwcrim]

The rules are pretty liberal in LSR racing except for the Production class.  Production rules are quite strict but pretty simple.  The bike must appear as it was produced.  Period.

Other than that,  you can do darn near anything to fit in any class you wish.   Depending on the sanctioning body, there are different engine classes i.e. 'pushrod' or 'two stroke'.

For fuel, you can run in 'Gas' class or 'Fuel' classificatoin.  If you run 'Gas' you must buy the fuel from the track vendor and have tank sealed.  'Fuel' is anything goes.  Alky, nitro, moonshine.......

Chassis classes are 'Production', 'Modified', and 'Altered'.  Altered has wheel base, fuel capacity and a few other restrictions.  Modified is more for a souped up bike with stock chassis parts.

Then there is the aero package.  If you have aero devices forward of the rider, it's 'Partial Streamlined' or PS.

My bike was able to run in 4 chassis classes by adding or removing a fairing.  Since I ran, they've tightened the rules a bit to stop guys like me from hopping classes so easily.  Obviously, I've left out lots of fine print, but that's the basics.

[BDI]

So would I be able to run my bike

[mdw471]

Hey All

I updated with a link to some stuff about Kevin......Punk Rock and Motorcycles!

Any of you Southern California or European guys know of a band called Ignite?

Mark

p.s. wait till you guys see what Stewart has been working on!!

[Dutch-K5 Fan]

So, turning one into a two stroke steel spined Roland Sands style supersingle is out of the question then?
http://uk.youtube.com/watch?v=mhdZiVM-ovI&feature=related
http://uk.youtube.com/watch?v=JH3Sdmit29Q

That's a realy nice ride man!!!!! k5 it and hang on to it.
I now that there is a class supermono, for big single cilinder engine's

Dutchie