Scraping Pegs

Message

bikeguy joe · Thu Sep 15, 2005 12:37 am

jmillheiser wrote:as for the math puzzle. the length but not height of the 2 L shapes was changed in relation to the longer length of the red scalene triangle vs the green triangle, but the 2 scalene trianges are the same height therefore creating the gap nesscessary to maintain the scale when the triangles are transposed

[/quote]

NERD ALERT! NERD ALERT!

Wow man, you just made my head explode!

#42 Unread post by **ZooTech** » Thu Sep 15, 2005 12:57 am

Mintbread wrote: There was a picture I saw of some guy on a HD at the dragon that came unstuck because he appeared to lean so hard on a dragging peg that it took so much weight off the tyres that they simply lost traction.

sapaul · #43 Unread post by **sapaul** » Thu Sep 15, 2005 2:40 am

Thats cause you can't counter steer with one hand

corrrect me if I am wrong, but tyre manufacturers consult with bike manufactureres when bikes are in production and agree on certain tyre types for the lean angle that the bike was designed for. Trying to push a bike over that profile will result in a dump. Do they not also take into consideration, boards , pegs, exhausts into this equation. If you are scraping, then you are either close to your limit or you are going. I know that my designed lean angle is 50* and when I buy tyres I make sure that they have a profile designed to cope with this. At our track days the instructors put you into classes, they put me in the A class with race riders, I keep up and have yet to scrape a peg, with or without my pillion and I do not drop knees. Awsome pics Zoo keep them coming we are getting a lot of mileage from the Dragon.

#44 Unread post by **ZooTech** » Thu Sep 15, 2005 4:05 am

sapaul wrote:Thats cause you can't counter steer with one hand

I do it all the time.

sapaul wrote: corrrect me if I am wrong, but tyre manufacturers consult with bike manufactureres when bikes are in production and agree on certain tyre types for the lean angle that the bike was designed for. Trying to push a bike over that profile will result in a dump. Do they not also take into consideration, boards , pegs, exhausts into this equation. If you are scraping, then you are either close to your limit or you are going.

What happened to that guy is simple...he leaned over too far on his floorboard and literally picked the front tire up off the ground causing understeer. It looks as though he attempted to correct it but knew he'd have to cross the center line to do it so he bailed.

sapaul wrote: I know that my designed lean angle is 50* and when I buy tyres I make sure that they have a profile designed to cope with this.

I'll bet he had plenty of usable tread left because those floorboards touch down hella quick.

DJGroove · #45 Unread post by **DJGroove** » Thu Sep 15, 2005 4:16 am

Hey, at least the guy was wearing proper safety equipment. Let's credit him for that.

iwannadie · Thu Sep 15, 2005 4:17 am

ZooTech wrote:
sapaul wrote:Thats cause you can't counter steer with one hand
I do it all the time.

sapaul wrote: corrrect me if I am wrong, but tyre manufacturers consult with bike manufactureres when bikes are in production and agree on certain tyre types for the lean angle that the bike was designed for. Trying to push a bike over that profile will result in a dump. Do they not also take into consideration, boards , pegs, exhausts into this equation. If you are scraping, then you are either close to your limit or you are going.
What happened to that guy is simple...he leaned over too far on his floorboard and literally picked the front tire up off the ground causing understeer. It looks as though he attempted to correct it but knew he'd have to cross the center line to do it so he bailed.

sapaul wrote: I know that my designed lean angle is 50* and when I buy tyres I make sure that they have a profile designed to cope with this.
I'll bet he had plenty of usable tread left because those floorboards touch down hella quick.

what makes you think that you need two hands to counter steer? i certainly dont.

ZooTech is right, his floorboard was the problem. the bike couldnt lean when the board hit and caused the tires to pivot off the ground.

the best part of those pics, all his fancy chrome bars do no thing to protect the bike lol. the last pic you can see the front crash bar isnt even on the ground while the rest of the bike is dragging along...

#47 Unread post by **ZooTech** » Thu Sep 15, 2005 4:18 am

jmillheiser wrote:as for the math puzzle. the length but not height of the 2 L shapes was changed in relation to the longer length of the red scalene triangle vs the green triangle, but the 2 scalene trianges are the same height therefore creating the gap nesscessary to maintain the scale when the triangles are transposed

I guess I'm just not understanding your explanation well enough. All four pieces possess exactly the same dimensions from arrangement #1 to arrangement #2, so they should cover the same area regardless of their arrangement. The fact that they do not is the basis for the puzzle.

DJGroove · #48 Unread post by **DJGroove** » Thu Sep 15, 2005 4:52 am

As for the math problem, the red and green triangles are not similar. When you switch their arrangment, you reduce the total area of the triangle. In fact, they are not triangles at all, but quadrilaterals with an angle that is almost 180 degrees. The thickness of the black line hides this.

It's more of an optical illusion than a math problem.

How's that for nerdiness?

~DJ

Craig7220 · Thu Sep 15, 2005 9:23 am

DJGroove wrote:Hey, at least the guy was wearing proper safety equipment. Let's credit him for that.

UMMM, yep he had a beanie on, but a sleeveless tee shirt didn't help him out much.

#50 Unread post by **cb360** » Thu Sep 15, 2005 9:58 am

Anyone know what happened to the dude in the above pic? By the angle of his leg in he last shot it looked like we was dragging a lot of raw meat on his right shoulder. anyone know the aftermath? I hope he came out of it ok.