Throttle response

[nismos14]

So, I've noticed that when I'm applying throttle it seems initial response is a little bit jerky, just the very first motion into where the throttle starts to open up. Does everyone have this problem? It makes it somewhat difficult to smoothly shift and jolts my wife when she's riding with me.

Also at what RPM's do your bikes idle?

I'm thinking of just adjusting the throttle cable until the throttle is passed the point where it is jerky and hope it doesn't raise my rpm's too high at idle.

 

[Marthy]

So, I've noticed that when I'm applying throttle it seems initial response is a little bit jerky, just the very first motion into where the throttle starts to open up. Does everyone have this problem? It makes it somewhat difficult to smoothly shift and jolts my wife when she's riding with me.

Also at what RPM's do your bikes idle?

I'm thinking of just adjusting the throttle cable until the throttle is passed the point where it is jerky and hope it doesn't raise my rpm's too high at idle.

Idle should be around 1200-1300. Since you can adjust your fuel trim add some a bit in the 2-5% throttle. Add like 3-5% fuel and try it. If it get worst go the other way by leaning.

Sorry, reg. JB. Add a bit of fuel on the bottom end... not sure how the JB work?

 

[MistahT]

The action of rolling the throttle is jerky or the motor engagement is jerky?

I personally find engine engagement a touch on the jerky side in the first couple gears getting on and off throttle but it's not a big deal. My buddies Ninja 650 on/off is like riding a Bronco!

I think we're supposed to have a certain amount of slack in the throttle. I'm honestly not sure why. My last bike I took it down to absolutely no slack and the throttle worked very well with no negative effects.

 

[nismos14]

The action of rolling the throttle is jerky or the motor engagement is jerky?

I personally find engine engagement a touch on the jerky side in the first couple gears getting on and off throttle but it's not a big deal. My buddies Ninja 650 on/off is like riding a Bronco!

I think we're supposed to have a certain amount of slack in the throttle. I'm honestly not sure why. My last bike I took it down to absolutely no slack and the throttle worked very well with no negative effects.

I THINK it's the cable, but it could just be the way the engine reacts to initial throttle input? I can roll the throttle slower and not have the problem be as noticeable, but I know it's still there. It's almost like the bike initially jerks slightly forward, like it's a quick reaction then it just rolls along. That's not to say that it doesn't do it in other gears, but it's less noticeable since I'm already rolling at that point. I still notice it though as I roll on the throttle from idle it can jerk slightly (while in motion).

 

[MistahT]

I THINK it's the cable, but it could just be the way the engine reacts to initial throttle input? I can roll the throttle slower and not have the problem be as noticeable, but I know it's still there. It's almost like the bike initially jerks slightly forward, like it's a quick reaction then it just rolls along. That's not to say that it doesn't do it in other gears, but it's less noticeable since I'm already rolling at that point. I still notice it though as I roll on the throttle from idle it can jerk slightly (while in motion).

Maybe try to lubricate the cables, or adjust it for a little less slack and see if the probelm gets better or worse? Maybe ride through the friction zone on the clutch a bit slower?

 

[nismos14]

Maybe try to lubricate the cables, or adjust it for a little less slack and see if the probelm gets better or worse? I find myself that once I'm rolling I'm not very gentle on the clutch on a bike the way I am with the clutch on a car. Maybe ride through the friction zone a bit slower?

I just lubed the cables a couple of weeks ago. I don't think that's the problem.


I will adjust he slack and see if that helps any.

I'm the same way with the clutch on the bike vs my car lol.

 

[alaskanflyboy]

I can think of a couple things. The cable's been mentioned, and if you check the owners manual it talks about throttle adjustment and the recommended slack range. I'd also check the slack in your chain, as it tends to bunch forward when you let off the gas and then pull that slack out when you hit the gas. So you'll get a lag, followed by a sudden jerk when it draws tight again. That's at least been my experience the few times I've gone too long without adjusting the chain.

 

[Riccochet]

Same on my new bike. I just throttle up a bit more and ride the clutch through it. Also, roll off throttle a little slower and you'll get less buck.

 

[leem00]

So, I've noticed that when I'm applying throttle it seems initial response is a little bit jerky, just the very first motion into where the throttle starts to open up. Does everyone have this problem? It makes it somewhat difficult to smoothly shift and jolts my wife when she's riding with me.

Also at what RPM's do your bikes idle?

I'm thinking of just adjusting the throttle cable until the throttle is passed the point where it is jerky and hope it doesn't raise my rpm's too high at idle.

Injector sync?

 

[JSP]

Adjust throttle cable. Possibly throttle body sync as well?

 

[mikebaileyvienna]

clutch touch?

Perhaps lighter/smoother work with the LEFT hand

 

[nismos14]

Lots of good suggestions, thanks! I think the problem resides on the right side, because the clutch can be handled in all different manners and still I'll feel the same thing on the throttle side, it just won't be noticed because of the timing of clutch engagement.

 

[Anthony]

So, I've noticed that when I'm applying throttle it seems initial response is a little bit jerky, just the very first motion into where the throttle starts to open up. Does everyone have this problem? It makes it somewhat difficult to smoothly shift and jolts my wife when she's riding with me.

Also at what RPM's do your bikes idle?

I'm thinking of just adjusting the throttle cable until the throttle is passed the point where it is jerky and hope it doesn't raise my rpm's too high at idle.

Tighten your throttle line?

 

[nismos14]

Tighten your throttle line?

Yea, that's what I mean by the last line in my post

 

[2wheelie]

Put smaller rear sprocket?

 

[yellowfz]

So, I've noticed that when I'm applying throttle it seems initial response is a little bit jerky, just the very first motion into where the throttle starts to open up. Does everyone have this problem? It makes it somewhat difficult to smoothly shift and jolts my wife when she's riding with me.

Also at what RPM's do your bikes idle?

I'm thinking of just adjusting the throttle cable until the throttle is passed the point where it is jerky and hope it doesn't raise my rpm's too high at idle.

First small line above 1000 idle setting is where it seems to be the best for throttle roll on.
Revving and feathering the clutch can help take some of the jerkiness out, to much load (weigh) on the bike and not enough RPMs is always a cause of jerking, and to tall a gear ratio is another one (+1,-2 example), both together is a definite cause.

 

[buzzbomb]

So, I've noticed that when I'm applying throttle it seems initial response is a little bit jerky, just the very first motion into where the throttle starts to open up. Does everyone have this problem? It makes it somewhat difficult to smoothly shift and jolts my wife when she's riding with me.

Also at what RPM's do your bikes idle?

I'm thinking of just adjusting the throttle cable until the throttle is passed the point where it is jerky and hope it doesn't raise my rpm's too high at idle.

My 2c? You open the throttle a bit, and the fuel injectors go to work. From an idle, it's kind of like a spurt of adrenaline. It's just the motor firing up and going to work. It's hungry and you just fed it a bit.

Honestly, I think that's just the way the bike is. A less responsive throttle would mean that you've got to crank it, to feed the engine, and when you let it go, it'd take a while to wind down. A more responsive throttle would mean just a shiver, and the rpm's would change.

Just clutch through it. :thumbup:

 

[FastFreddy]

On the motorbike course, they say to, keep the revs at 2000 rpm and ride the clutch to do slow speed manoeuvring.

In traffic, I'm thinking more about getting ahead of the other vehicles and then merging lanes safely, when the lights go green. I suppose you wouldn't want your wife flying off the back though, like that video that got removed a few months back.

I know what you mean :
It's like I have 2 throttle positions only at slow speed, 1 barely open and 2 a bit more than barely open, then I use to clutch to keep it smooth. Once you start moving faster you can be more progressive with the throttle hand.

 

[Bert-Aus]

The air box mod made a big difference to my throttle response.

Now with Marthy Viper & PCV the throttle response is so precise,
I feel I am re-learning the bike =Very nice

 

[nismos14]

On the motorbike course, they say to, keep the revs at 2000 rpm and ride the clutch to do slow speed manoeuvring.

In traffic, I'm thinking more about getting ahead of the other vehicles and then merging lanes safely, when the lights go green. I suppose you wouldn't want your wife flying off the back though, like that video that got removed a few months back.

I know what you mean :
It's like I have 2 throttle positions only at slow speed, 1 barely open and 2 a bit more than barely open, then I use to clutch to keep it smooth. Once you start moving faster you can be more progressive with the throttle hand.

I played around more with the clutch and was able to keep it smooth. It's really like the throttle has a slight stick very minor, then it just becomes smooth. Maybe it's just vacuum?