ns125r wont rev above 6000

busy · L Plate Warrior Joined: 18 Jan 2004 Karma :

hello everyone i have just purchased a ns125r but it has a problem that the engine wont rev above 6000 on the road but it will in neutral but feels that its being strangled so i would like to no if this has been experienced before or if anybody knows any ns specialist in the midlands area thank you ****fixed*** problem was restricted exhaust managed to get brand new micron from exeter 175 pounds, as old exhaust was a derestricted type but blocked internally thanks for replys

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

They do not go much beyond that in good condition if they are restricted (well, not without a lot of effort).

Is it still restricted?

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

GFK · Scooby Slapper Joined: 03 Apr 2003 Karma :

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Well, I was thinking of in the higher gears!

Will it rev out in the lower gears once warm?

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

Sparks! · Sir Tart-a-lot Joined: 30 Aug 2003 Karma :

If it revs out in neutral no problems, but not on the road then as Kickstart said he could be in a higher gear, and as Kickstart says... It won't rev much past it. (If that makes sense)

So maybe there's nothing wrong, it's just restricted?
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Ian (GPX) · Brolly Dolly Joined: 05 Aug 2003 Karma :

Most NS125R's will rev past and up to 10k in gears 1 - 4, once you get into gears 5 & 6 the NS125R will struggle to reach 7k unless your going down hill.

The NS125R I sold last year could rev to 10k with ease, but as soon as 5th or 6th gear was selected the revs just could not reach 10k, the max I got in revs if I can remember was 8k in 6th gear and at times the bike just started to die and overheat, I had to drop her down to 5th just to keep the speed up at 85mph. On a good day, the bike could do 93 - 97mph in 6th gear @ 8,500k, but it was rare.

Sounds like the jetting or mixture could be out on his NS125, or air filter leaks / blocked.