cog size for nsr

nsr125rossie · Two Stroke Sniffer Joined: 05 Jun 2007 Karma :

hello can any one tell me do you go up a tooth or down a tooth on the front cog i have just tacking the re-stricters out the exhaust i have a 2000 nsr 125 it is now fast off the mark but still only does 75mph

ncrn · World Chat Champion Joined: 24 May 2006 Karma :

Did you take the plate out thats between the carb and the engine?
____________________
Past: 55 Sym Jet, 91 ZZR250, 03 NSR125R. Present: 97 ER-5.
https://www.nsr125.co.uk - NSR Owners forum.

nsr125rossie · Two Stroke Sniffer Joined: 05 Jun 2007 Karma :

yes it was allready out

ncrn · World Chat Champion Joined: 24 May 2006 Karma :

Certain of that? I could go faster than that on my nsr with both restrictors in.

But all the same if you want to go faster you want to go up one tooth.
____________________
Past: 55 Sym Jet, 91 ZZR250, 03 NSR125R. Present: 97 ER-5.
https://www.nsr125.co.uk - NSR Owners forum.

nsr125rossie · Two Stroke Sniffer Joined: 05 Jun 2007 Karma :

the cog that is on at the mo is a 13 tooth i think as standed are 14 is this right

professor151 · L Plate Warrior Joined: 28 Jul 2007 Karma :

Is it running out of revs in top gear? I mean are you revving it into the red?
If you go up one tooth on the front sprocket (up to 14 tooth from 13) you will, theoretically, have a new top speed of 80mph. Not much difference.

Thats obviously dependant on the condition of your engine, wheel bearings, your chain, brakes (they might be dragging) etc. Any of the cycle parts can slow you down if they're not in good condition.

As ncrn said, his NSR could do more than 75 while still restricted, so my guess is that you're barking up the wrong tree.
In fact with highly reduced gear ratios, for the short circuit track, my TZR reaches about 75 with the tacho needle just touching the red.

Double check that you have removed both restrictors, make sure everything is working nice and smoothly.
If you lift the bike off the grond the wheels should rotate freely if you spin them. It seems obvious I know, but its something you need to check every now and then.

Have you compared your bike to a friend's one maybe? Testing the acceleration against a similar model should reveal how nicely the engine is working.

nsr125rossie · Two Stroke Sniffer Joined: 05 Jun 2007 Karma :

i will have a look at everything u have said thanks

professor151 · L Plate Warrior Joined: 28 Jul 2007 Karma :

Good luck, keep it on two!

st3v3 · Super Spammer Joined: 16 Oct 2006 Karma :

try www.nsr125.com for info if you haven't already, or wait for alains to come along and spread that NSR wisdom
____________________
Roger wrote: Women don't get damp for clingy puppies. Get some better happy pills, hit the gym & buy a medallion the size of a dinner plate. Job done

nsr125rossie · Two Stroke Sniffer Joined: 05 Jun 2007 Karma :

been there but thanks anyway

ncrn · World Chat Champion Joined: 24 May 2006 Karma :

I'd really want to check the carb plate is deffinetly not there. Because that really restricts your fuel intake.

When you are riding it are you riding it to the red line before changing gear?
____________________
Past: 55 Sym Jet, 91 ZZR250, 03 NSR125R. Present: 97 ER-5.
https://www.nsr125.co.uk - NSR Owners forum.

nsr125rossie · Two Stroke Sniffer Joined: 05 Jun 2007 Karma :

yes its out it is faster off the mark now but only gets to 75 mph