TOO Tight trottle !!!!

[Fish]

Hey guys

Great forum you guys got going on here

i am now the proud owner of the beloved NC30


I picked mY nc30 up Yesterday and i noticed i that it had a very tight accelratr cable.
if i reved her up and left the grip it would stick to that rev
i have practically no machanical knowledg ,could you guys please help me sort this
out


Thanx

[imjh]

My RVF had this...sounds like you need to lube the cables and throttle linkage at the carbs. I did mine and it snaps back now..get yourself a Haynes manual and a cable oiler and follow the instructions, it's dead easy..

[Danzio]

Welcome to the forum!

any problems you have should get cleared up here.

mine done the same for a while, and still does it now.

ok here goes, a pretty rough explination of some things which can cure your problem!

there are many areas to check for 'sticking' in certain places throughout the throttle cable and grip assembly. first of all you should check that your cables (acceleration and deceleration) are both routed properly on the left side of the bike (left being if your in riding position) they should have no sharp kinKs or be twisted in anyway. next check the throttle grip, it should move freely and should be well lubricated to aid in it 'snapping' back to its orginal position.

Next bits the hardest part and requires some panels off....

take off the seat unit, fuel tank (disconnecting all cables and marking which goes where, TURN FUEL TAP OFF, and be very careful undoing the vacuum hose, which is a small thin tube connected to the back of the fuel tap on the tank, ideally disconnect at the metal connector to avoid it snapping or breaking.)

now if you remove some left hand panels, the top one is easy and should do, just to get some light in. Look down the left side of the carbs, you should see where your throttle cables route to on the carbs and where they connect. (if you cannot see much also remove the air box and its filter, again careful with the screws!)

they should all route easily and be smooth throughout the action. If there not then this is a last place to check, disconnect the cable housing from you're throttle on the handle bars, making sure its just the black housing which surrounds the handlebar which comes off, leaving the cables in the assembly. try putting some light viscousity oil down such as wd40 or 3in1 oil and wait for it to appear on the fixing at the carbs, as gravity will pull the lube down to there exit on the carbs, next try putting the throttle assembly back together at the handlebars and moiving the throttle back and forward as if you were accelerating and decelerating. this might free them up.

end of the day it works off the carbs which have preloaded springs to open them for fueling. these when open (accelerating) put the springs under more load meaning the throttle should 'snap' back to closed, but if they cant id suggest replacing the cables or adjusting then via where there connected on the carbs.

if you have a haynes it tells you about adjusting in there. if you havent got one let me know and ill supply more info for you from mine.

hoope this helps in the mean time.

regards.

Dan

[vfrgav]

yes, lubricating the cables could solve the problem, but i also find a lot of the time with sticking throttle cables that they are simply too tight and have no free play in them. You should be able to turn the throttle twist grip a few millimeters before it starts to pull the cable. this could be the cause of your problems too. If this is the case you can use the adjuster at the carb end to give it some slack and free the cable up. worth a look.

[Danzio]

yes, lubricating the cables could solve the problem, but i also find a lot of the time with sticking throttle cables that they are simply too tight and have no free play in them. You should be able to turn the throttle twist grip a few millimeters before it starts to pull the cable. this could be the cause of your problems too. If this is the case you can use the adjuster at the carb end to give it some slack and free the cable up. worth a look.

deffo worth a look, forgot to mention cable slack, cheers gav.

[viper_biker]

Actually, if you have Honda cables fitted don't lube them. They are teflon coated and will make the sticky throttle worse. A few things are cable routing, adjustment at the carb and adjustment at the throttle housing. I might actually be time to replace the cable though.

[Biff]

Just to add, check the rubber throttle grip isnt rubbing on the barend and or cable housing..

[fastdruid]

Cables aren't expensive and if they've started to bind they're shot, get a new set before they cause problems, lubing will get them better for a short while but they shouldn't need it.

I've found if the return cable is too tight it will lock, also mank under the throttle tube makes a big difference as does aftermarket bar weights badly fitted.

For the snappiest throttle I personally remove the throttle tube, clean the inside and the bar then lube with engine oil (grease is too sticky). Use grease inside the cable 'box', unadjust both cables then adjust the 'pull' cable (the one that opens the throttle) to have a slight amount of slack, ensure the throttle snaps shut on both left and right lock. Then adjust the return until the throttle is slow to return then back it off until it snaps shut. Ensure it does this on both left/right lock, backing off the return cable a bit more if it doesn't.

Oh while I remember, wrt bar weights, if using bar weights that are larger than the bar I stick a penny washer (the same dia as the bar) in the mix so that the larger section sits out and the grip doesn't rub on it. You can shave or cut the grip but this is far quicker, simpler and neater.

Druid

[Fish]

hey guys

Thanx for the great response

im thinking of replacing the cable ,i dont wana take that chance

any idea how much a new indicator switch would cost ?

Thanx

[Cammo]

The problem can also be because the bar end is pushing too tightly against the throttle grip.

Remove the bar end weight (screwdriver usually) and see if it makes a difference.