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Messages - Lnewqban

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3
General Discussion / Re: Sprocket?
« on: December 31, 2013, 12:38:25 PM »
For the same speed, a bigger rear sprocket makes your engine turns faster and away from the jerky zone (the inertia of the flywheel is broken and the engine tends to intermittently stall).

It is also good for burst acceleration out of a turn (at the expense of final speed in first gear).

The best way to keep tension in the chain is dragging rear brake simultaneously.
A solid cushion (sprocket-wheel) is part of the improvement to jerkiness.

4
Introduce yourself / Re: greetings from Calgary, Canada
« on: October 27, 2013, 11:20:34 AM »
...........I'm starting to get it. It's sure not easy.

Welcome, rayian !!!

5
Southern California / Re: M Gymkhana Oct. 26th at CSLA
« on: October 27, 2013, 11:19:10 AM »
Any updates?    :)

6
Video & Pics / Re: An Englishman Abroad
« on: July 30, 2013, 10:36:00 PM »
This is a dizzying point of view:

2013 DUNLOP AUTOBY Cup Gymkhana! Round.3 Winner Fairy's View

7
this vid worked out great for me except one thing. unless i crank up miss piggy's idle i cant take my hands off. that big v-twin lurches at low speed and makes it feel like your chopping the throttle.

Take a look at this:
http://amgrass.com/forum/practice-practice-practice/post-your-gp8-times/msg912/#msg912

8
..............Video - It appears as though the gsxr in the video has a greater lock to lock steering range and maybe a different sprocket. In comparison to my friend's gsxr, once we reached the point of steering lock, there's no way to turn the handle bars further to pull out, causing us to throw our foot down or bump the throttle. (You can see in the video the rider leans in further, which would cause the steering to turn in further, pulling the bike out. Therefore the rider does not have the bike at full lock.) When we tried increasing speed or idling in 2nd, we reached the lean angle but the radius was wider. But, clearly the rider isn't bumping the throttle to keep the bike from dropping, proving that the rider is not at full lock. The steering is free to turn out to increase lean or turn in to decrease lean.

Joel,

It can be at full lock and still be able to counter-steer using body weight to make the bike lean more and to stop the rotation.
The thing is that, due to the geometry of the steering, the more you lean the bike at full lock, the smaller the radius of turn becomes.

Check this out:
http://amgrass.com/forum/video-pics/tire-arc-deviation-disscussion/msg430/#msg430

If speed remains the same and radius get smaller, the greater centripetal acceleration rolls the bike out of lean and the bike returns to a more or less stand up position and straight trajectory.

9
Introduce yourself / Re: the new guy
« on: July 19, 2013, 08:00:31 AM »
Everyone was afraid to train in the rain but I squashed those thoughts.
Well done !

Welcome to our site, Will !!!

10
Introduce yourself / Re: Greetings from SoCal
« on: July 19, 2013, 07:55:37 AM »
Welcome to our site, Joel !!!

11
Video & Pics / Re: Vulfy's video thread
« on: July 17, 2013, 03:03:15 PM »
No idea what I just read and saw on that link.  Care to elaborate?

Vulfy,

As I understand it, the schematic shows how the three forces that can make a bike lean and turn change with the speed of the bike.

Body weight has the same influence on turning and lean angle, regardless the speed.

The help of the side force coming from the gyroscopic reaction (when the handlebar is turned) has an influence that grows linearly with the speed of the bike.

Changing direction by turning the handlebar (counter-steering) influences turning and lean angle of the bike in a way that is proportional to the square of the speed of the bike.
For bikes that have a big trail, that influence is opposite (steering) for low speeds.

12
Speed is forcing to put bars strait. I believe we need to find maximum speed at which we can keep bars in full lock. Exercise called rotation can help.


I have found this vid that shows that clearly:

GSX-Rで手離しクルクル

13
Video & Pics / Re: Killing Kones by Moonlight
« on: June 08, 2013, 09:38:47 AM »
Fun night! It's nice to get out and play on a school day.  ;D

Man............, how can you ride backwards?    ;D     ;D     ;D

14
Video & Pics / Re: Vulfy's video thread
« on: May 18, 2013, 11:31:59 AM »
I have found this interesting table about the three methods of steering:

http://www.promocycle.com/Tableau3-contrebraquage.html

15
Start a Chapter in your state / Re: NYC
« on: May 04, 2013, 09:36:17 PM »
Hahaha,.......... funny edition !!!

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