will not rev past 12500

shokrabi · Post by **shokrabi** » Wed Sep 03, 2008 12:01 am

Hi, was at rockingham on sunday and my nc30 would not rev past 12500. It has no ignition barrel its wired into the kill switch. Done the resistor mod to my cdi and i have a digital dash. Any help would be greatly appreciated. Thanks.

Post by **Cammo** » Wed Sep 03, 2008 12:20 am

Did this happen in all gears? Or was it just the 180km/h speed limiter?

shokrabi · Post by **shokrabi** » Wed Sep 03, 2008 10:41 am

happened in all gears

Post by **Cammo** » Wed Sep 03, 2008 10:57 pm

Probably to do with lack of fuel, either through the fuel tap/vacuum not working properly, jets too small, or too much air getting in (airbox/filter mods?).

Post by **Neosophist** » Wed Sep 03, 2008 11:22 pm

Continious WOT can cause fuel starvation but that would cuase it to stutter at high revs? HRC recommend disabling the vaccum unit to rectify that.

Apart from that i'm stumped. :/

Post by **superlite** » Thu Sep 04, 2008 5:39 am

Does the power disappear bang on 12500 in all gears, or is it 'fluffy'? Sounds like it may be running lean. As Cammo says, I'd suspect the airbox set-up first. A standard fuel tap would usually only cause some hesitation, and would still get to the redline (eventually).

shokrabi · Post by **shokrabi** » Thu Sep 04, 2008 12:03 pm

no more power coming out of the engine at 12500. sounds like the engine is maxing out. I have 122.5 front and 125 rear jets with hrc exhaust system drilled slides and 1mm raised needles

Post by **CMSMJ1** » Thu Sep 04, 2008 12:16 pm

is it hitting the limiter?
can it hit the limiter in neutral under no load..or even flash up 13l revs?

(not that I agree with revving the nuts off stationary bikes..it might show whether this is a tacho calibration or rev lmit issue.)

shokrabi · Post by **shokrabi** » Thu Sep 04, 2008 1:38 pm

It used to go past 12500 when i had the bike as a road bike. But now since I've done a lot of work to it as a track bike it will hit the limiter at 12500, i don't know why. Is there any connection between getting rid of the ignition barrel and this problem occurring?

Post by **mavisravis** » Thu Sep 04, 2008 5:06 pm

Shouldn't do. I recently did the same mod and the bikes fine. I'td either run or not at all if you did it wrong

will not rev past 12500

will not rev past 12500

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Re: will not rev past 12500

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