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Old 05-14-2008, 01:06 PM   #21
Solracer
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Quote:
Originally Posted by BigComfy View Post
Depends. You may lowside actually.
grab SOME brake, not an assload.
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Old 05-14-2008, 01:07 PM   #22
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Quote:
Originally Posted by Solracer View Post
grab SOME brake, not an assload.
thus why I said "depends. you may lowside actually" azz hat!
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Old 05-14-2008, 01:09 PM   #23
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this is what the throttle does...

let off gas, load gets back on front wheel, which lets the bike steer easily

when you're hard on the gas, the load is on the rear, and you have less steering capabilities

maintenance throttle keeps the load even throughout the turn so that you don't understeer or oversteer, but keep a constant speed and radius.

so YES, by letting off the throttle you can decrease the radius on a turn.

CHOPPING the throttle however is defined as someone letting off the throttle and getting back on instantly and without smoothness....
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Old 05-14-2008, 01:09 PM   #24
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I chop the throttle when getting a power wheelie up....I always thought it meant completely off the gas then pinning the throttle open.
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Old 05-14-2008, 01:14 PM   #25
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I think this whole conversation hinges on the definition of "chopping the throttle" and clearly some have different ideas than others.

The one thing I would caution all of us to remember is that we should be careful what we post. This thread contains some highly suspect information that a new rider could use to hurt himself.
SO, rephrase the question in a way that is clear about what you want to know and then all responses should be carefully worded so as not to mislead.
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Old 05-14-2008, 01:16 PM   #26
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Depending on the geometry of your setup, chopping the throttle may be necessary to get the bike to turn in therefore decreasing the turn radius. I prefer to not setup my bike in this manner but, many established and very fast racers in the CMRA operate with this type of model.
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Old 05-14-2008, 01:32 PM   #27
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Quote:
Originally Posted by bumblebee View Post
I think this whole conversation hinges on the definition of "chopping the throttle" and clearly some have different ideas than others.

The one thing I would caution all of us to remember is that we should be careful what we post. This thread contains some highly suspect information that a new rider could use to hurt himself.
SO, rephrase the question in a way that is clear about what you want to know and then all responses should be carefully worded so as not to mislead.
this is VERY true....

my definition of chopping the throttle is hard off, and hard on, with no smoothness between throttle transitions.
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Old 05-14-2008, 01:42 PM   #28
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how to take a turn?

stick ur foot out like dirtbike and keep ur elbows as low as possible.
make sure ur back is straight and u are looking straight down in front of u. then push out ur chest make turn and straighten arms while wheeling away.

now read that and try and imagine a total goon taking a turn.
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Old 05-14-2008, 01:46 PM   #29
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Quote:
Originally Posted by bumblebee View Post
Well, that would be the best way to handle a turn, but in a sweeper you can adjust your line slightly by modulating the throttle, even with no change in steering input.
that is CORRECT
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Old 05-14-2008, 02:01 PM   #30
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Old 05-14-2008, 02:09 PM   #31
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Quote:
Originally Posted by Solracer View Post
there is a HUGE difference in "Chopping" the throttle and increasing throttle smoothly.
+1
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Old 05-14-2008, 02:14 PM   #32
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Sorry I didn't explain properly I meant going from throttle to no throttle to try and slow down. The way I have experienced it is that if you slow down in a turn the bike wants to stand up unless you force it to lean more.
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Old 05-14-2008, 02:23 PM   #33
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Generally when you "chop" the throttle you let off quick. You know when you chop something off you are taking away something. You chop the throttle you are taking away gas. Thats how I have rationalized it.
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Old 05-14-2008, 02:28 PM   #34
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The complete story behind this is, on another forum a video was posted of a rider that fell off the bike mid-turn and the bike stood up and continued for several hundred feet. People on that forum were calling the video a fake because without the rider the bike would have started to slow down and low-sided. My argument was that if you slow down in a turn, the bike naturally tries to stand up.
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Old 05-14-2008, 02:30 PM   #35
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Bikes naturally try to stand up if they are moving period. It is the gyroscopic forces of the wheels. Slowing down in a turn shouldn't really increase this unless the bike has a load of trail or the suspension isn't set up properly.
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Old 05-14-2008, 02:34 PM   #36
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Quote:
Originally Posted by OJgsxr View Post
The complete story behind this is, on another forum a video was posted of a rider that fell off the bike mid-turn and the bike stood up and continued for several hundred feet. People on that forum were calling the video a fake because without the rider the bike would have started to slow down and low-sided. My argument was that if you slow down in a turn, the bike naturally tries to stand up.

Rider was being a bad passenger and tossed him. No passenger bike is happy thus stands up and keeps on trucking. This is the great thing about motorcylces vs relationships when you **** up the bike lets you know immediately
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Old 05-14-2008, 03:03 PM   #37
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Quote:
Originally Posted by OJgsxr View Post
The complete story behind this is, on another forum a video was posted of a rider that fell off the bike mid-turn and the bike stood up and continued for several hundred feet. People on that forum were calling the video a fake because without the rider the bike would have started to slow down and low-sided. My argument was that if you slow down in a turn, the bike naturally tries to stand up.
There is a LOT more going on in this situation than just reducing throttle.

1) The center of gravity changes BIG time when the rider is removed from the bike.
2) The suspension is now unloaded.
3) The handelbar input is gone.
4) There is likely to be some disturbance in the way the bike is tracking thru the turn (probably somw oscillation of the bars at least).
5) AND the bike is slowing down.

Yes, a riderless bike can stand up mid-corner because as the countersteering input is removed on most bikes it will begin to straighten up. A really well set up track bike might be neutral in this way and need no input to continue the turn, but most bikes will.

To put it simply as BigComfy said the bike will let you know when you f**k up.
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Last edited by bumblebee; 05-14-2008 at 03:05 PM.
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Old 05-14-2008, 03:28 PM   #38
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Bikes naturally try to stand up if they are moving period. It is the gyroscopic forces of the wheels.

+1..

Bottom line: AVOID ABRUPT THROTTLE OR BRAKING WHILE IN A CORNER.
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Old 05-14-2008, 03:31 PM   #39
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By chopping I meant abruptly closing the throttle. I'm also not talking about on a nice new bike with a slipper clutch.


What I understand about motorcycling is that an abrupt deceleration (whether from compression braking from....say a big twin with no slipper or from braking) will stand a bike up, and send it wide.
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Old 05-14-2008, 03:34 PM   #40
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Quote:
Originally Posted by po-po 5.0 View Post
By chopping I meant abruptly closing the throttle. I'm also not talking about on a nice new bike with a slipper clutch.


What I understand about motorcycling is that an abrupt deceleration (whether from compression braking from....say a big twin with no slipper or from braking) will stand a bike up, and send it wide.
A slipper doesn't remove enough engine braking to change things in the discussed context.
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