Throttle control?

[magicmonkey]

Right, I know I'm a complete noob and that a bit of jerky throttle is to be expected while I'm learning, however, I felt that the throttle itself was a little jerky which was confirmed when a friend rode my bike. His forst comment when he got off was 'that throttles a little jerky mate, you want to remove your baffles, that'll fix it'

So, I'd quite like to sort this out but being a complete noob I'm not sure if I should be adjusting the play in the throttle or removing baffles (removing baffles does strike me as a bit of a silly fix though!) Any thoughts anyone?

[Devil]

How much play is there in the throttle when you turn it before it starts to meet resistance?
Dialling nearly all of that out using the adjusters should make a noticeable difference.

Just make sure after you have adjusted it that you turn the bars both ways to full lock with the engine running. If the revs rise you'll need to back off the adjustment a little.

[magicmonkey]

there's mroe play in there than there should be, maybe 4-5mm. I haven't actually measured that though. If adjusting the throttle cable is going to help the problem I'd much rather do that than remove the baffles so I might just have a go with it later tonight :)

[CookMySock]

A jerky throttle is good training for you. As soon as you ride a larger bike you will see what I mean, and you will be glad you are past that already.

Steve

[ital916]

there's mroe play in there than there should be, maybe 4-5mm. I haven't actually measured that though. If adjusting the throttle cable is going to help the problem I'd much rather do that than remove the baffles so I might just have a go with it later tonight :)

get someone to come over and give you a hand. Two heads are better than one and oyu will learn without messing everything up haha (not saying that you will). Anyway, its a gn. The throttle is either off or at the stop (im jokin bout that, dont take it seriously):yes:

[MSTRS]

Baffles affect throttle play? Well, you live and learn...:eek5:
Get the throttle cable adjusted properly (4-5mm play is not excessive - this isn't exactly a high-performance race bike, is it?).
Removing the baffle will only make your bike noisy, run too lean and backfire when you throttle off.

[vifferman]

Check (or have checked) your throttle action, to make sure the cable isn't binding anywhere. If it is, check for kinks or places where it might be getting bent or otherwise restricted in its action.
A carbed bike (especially something with a modest power output like the GN) shouldn't have an abrupt throttle. Try riding an EFI bike with quick-turn throttle. :crazy:

[magicmonkey]

Baffles affect throttle play? Well, you live and learn...:eek5:
Get the throttle cable adjusted properly (4-5mm play is not excessive - this isn't exactly a high-performance race bike, is it?).
Removing the baffle will only make your bike noisy, run too lean and backfire when you throttle off.

My mate reckons it makes the bike more torquey, I can't quite see how that would work though as you'd be reducing the amount of back pressure from the exhaust and therefore reducing the compression in the cylinder. Or at least that's how I think engines work and that seems to fit in with what you're saying. I think I'll write his smart idea off as a bit of a silly thing to do!

[magicmonkey]

A carbed bike (especially something with a modest power output like the GN) shouldn't have an abrupt throttle. Try riding an EFI bike with quick-turn throttle. :crazy:

To be fair to the bike, I've got very little riding experience and I think that my noobish throttle action is affecting an existing slight issue with the bike and compounding it...

[MSTRS]

It would reduce backpressure, but not dangerously so.
What removing a baffle does is open up the exhaust and increase outflow. But you now have to compensate by also increasing inflow at the carb. GNs aren't really built for this, so don't bother.

[MSTRS]

To be fair to the bike, I've got very little riding experience and I think that my noobish throttle action is affecting an existing slight issue with the bike and compounding it...

Try this and report back...
Pinch the throttle between thumb and forefinger only, gently turn it until fully open. Let it go.
Does it turn smooth and easily? Does it snap back when released?

[magicmonkey]

It would reduce backpressure, but not dangerously so.
What removing a baffle does is open up the exhaust and increase outflow. But you now have to compensate by also increasing inflow at the carb. GNs aren't really built for this, so don't bother.

I'll be leaving performance mods for a while I think, I've only been riding for one week so far!

[magicmonkey]

Try this and report back...
Pinch the throttle between thumb and forefinger only, gently turn it until fully open. Let it go.
Does it turn smooth and easily? Does it snap back when released?

I'll have a go, am at work at the moment though so it'll have to wait for my smoke break :) I assume this can be done with the engine off...

[MSTRS]

Off, yes. Just want to determine whether the cable runs freely

[magicmonkey]

Just had a check, it snaps straight back to the closed position with no sticking. I can't feel any differnt resistance when it's opening either so it seems that it's running freely

[MSTRS]

Good. That's ideal. Now, perhaps, just get excessive freeplay adjusted. Then work on you. Because your jerky throttle is confirmed as being a newbie thing. Like the kangaroos you see learner car drivers perform.

[magicmonkey]

Good. That's ideal. Now, perhaps, just get excessive freeplay adjusted. Then work on you. Because your jerky throttle is confirmed as being a newbie thing. Like the kangaroos you see learner car drivers perform.

oh yeah, there's plently of work being done on the 'organic seat mounted mechanism' at the moment :) I'm enjoying the bike more every time I ride it so putting in the practice is far from a chore!

[avgas]

baffles fix throttle play
tyre pressure fixes CDI's
R6's are the fastest bikes in the world
CBR250's do 250kph.....

KB is where all the knowledge is at

How old are the carbs in the bike? I had a similar instance where the butterflys were jamming on crud.

[magicmonkey]

it's the 04 model, only 10,000k's on the clock though, apparently the previous owner but one had let it sit for a while but the guy before me owned it for a year and rode it for commuting every day so I would assume that any dodgy old petrol scum would have worked it's way out of the carbs by now...

[MSTRS]

How old are the carbs in the bike? I had a similar instance where the butterflys were jamming on crud.


... the carbs by now...

Carbs? This is a GN...Highlander model, right? There can be only one?

[paddy]

Is it possible that the magicmonkey is describing drive lash rather than throttle play? Sprockets/chain tension...

[magicmonkey]

Carbs? This is a GN...Highlander model, right? There can be only one?

Yeah but the existing only looked so cool I glued another one on to the oil filter cover, it's not attached to anything but it does look cool :p

Kidding of course, it was a slip of the fingers...

[magicmonkey]

Is it possible that the magicmonkey is describing drive lash rather than throttle play? Sprockets/chain tension...

I checked the sprockets and chain play before I bought the bike, both were fine. In fact, I would have walked away if they weren't!

[george formby]

Right, I know I'm a complete noob and that a bit of jerky throttle is to be expected while I'm learning, however, I felt that the throttle itself was a little jerky which was confirmed when a friend rode my bike. His forst comment when he got off was 'that throttles a little jerky mate, you want to remove your baffles, that'll fix it'

So, I'd quite like to sort this out but being a complete noob I'm not sure if I should be adjusting the play in the throttle or removing baffles (removing baffles does strike me as a bit of a silly fix though!) Any thoughts anyone?

I,m baffled by the baffle fix. Your cable must run out the carb into the engine, through the cylinder, past the valve, out the exhaust port, along the pipe into your muffler. Ah, that would explain the snatchiness. When you open the throttle the back of the bike is being pulled closer to the handlebars. Is the action a bit stiff?

I'm sorry, I could'nt resist being silly.