On off throttle

[Guest Richzx6r]

So riding the bike today and 2nd gear on off throttle seems very snatchy and harsh when going from zero throttle to just starting to accelerate or when trying to hold a steady speed say 25 to 30/35 mph to me it would maybe point at a carb balance issue or would you guys point me in a different direction to the cause of the problem?

[Phill]

Check chain slack, a loose chain(way over the limit) will snatch when you roll the power on/off, next could be cush drivers, and/or TPS.

[Guest Richzx6r]

Chain is correctly adjusted, with the throttle there is maybe 4 or 5 degrees movement between totally off and when the revs start to rise

[fastbob]

One possible explanation for this type of behaviour can be worn emulsion tubes . Where the needle enters the jet the round hole can wear and become oval . The trouble is that this is so slight that it can be very difficult to see with the naked eye . I don't want to send you on a wild goose chase but it's worth considering if you can't find any more obvious causes. One way of checking is to pop the tops off the carbs , lift out the diaphragms and use your phone to take a close up shot of the hole then see if the picture looks oval .

[Guest Richzx6r]

One possible explanation for this type of behaviour can be worn emulsion tubes . Where the needle enters the jet the round hole can wear and become oval . The trouble is that this is so slight that it can be very difficult to see with the naked eye . I don't want to send you on a wild goose chase but it's worth considering if you can't find any more obvious causes. One way of checking is to pop the tops off the carbs , lift out the diaphragms and use your phone to take a close up shot of the hole then see if the picture looks oval .

 

That hadn't even crossed my mind, I shall keep it in the back of my mind if I can't see anything else easier that could be the problem, I have a feeling its play at the grip that's at fault

[Bodger]

Might be excess play in the throttle cable.

Been ages since I had a ninja so maybe they got the fly by wire now.?

Could try 3rd or 4th at 30mph if you are just pottering around-2nd seems a little low as you only need about 4 bhp so throttle responce would be a lot smoother.

[Guest Richzx6r]

Might be excess play in the throttle cable.

Been ages since I had a ninja so maybe they got the fly by wire now.?

Could try 3rd or 4th at 30mph if you are just pottering around-2nd seems a little low as you only need about 4 bhp so throttle responce would be a lot smoother.

 

I thought excessive cable play but it's only 4 or 5 degrees of play on the throttle.

2nd gear is only 4 to 5 thou rpm so not overly high and 3rd is closer to 3 thou which the bike doesn't seem to enjoy