Full opened NSR go just 135 km/h

[TheBudhaaa]

Hi guys, my English is really bad, I'm from Czech.
Look, I opened everything on my NSR 125 R (1997) and my max. speed was just 135 km/h.
This I have on my NSR:

Original exhaust without that sh*t in it (opened)
CDI opened
TV 78
Under the flange of the carburettor is nothing
In damper of the caburettor is nothing
AirBox is out --> Malossi filter
New nozzles
Strangler is adjusted
Limiters are out
Candle Iridium
Rosette is original

Help me please, I want be faster!

[Fisty]

Buy a faster bike.
____________________
Quietly and consistently taking the piss.
TL1000R | Hayabusa | ZXR400 | TL1000S | Bandit 400 V
Fatter and faster than Fret

[1198]

135kph is about 85mph? Seems fair for a NSR 125 in my opinion?
I'd say that you're pretty much at the limit of what it can give - if you want more speed - and who doesn't! - there's a need for more cubes!

[unluckyluke]

There's no replacement for displacement.... Or if you're a larger lad get your self down to fat fighters to get you a few more kphs!

[BenR]

[RhynoCZ]

[beardface]

You should be able to get 100mph from it in full power form, i'm assuming they are pretty similar to my old rg. Full power sports 125's need lots and lots of tlc......... start saving for thr re-build now!

[TheBudhaaa]

Lot of my friends done only that, what I wrote and their speed is much better then my. Normal full opened NSR go 175 km/h, opening cost me only 2000CZK (100$). BTW at that page https://www.nsr125.co.uk/ I wrote, nobody helped me. So I wrote here, maybe if I buy some better chain kit, I can reach my dream speed.

---->>> 79 KG

[Kickstart]

[RhynoCZ]

You could get smaller front wheel to make the speedo show a bit more.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[1198]

When I said 85 was the top speed I meant in a real world type situation - maybe given a huge long runway or straight flat motorway / road it will crack 100, but on a normal road where you're squirting between corners I'd say 85 would be a realistic top speed. My derestricted rgf125 would touch 100 - but it took forever for the last few mph!
Cracking bike though. I'd have it back tomorrow - especially now it wouldn't be my only means of transport and it's mileage led taste for top ends wouldn't be as often!

[1198]

Oh, and 175kph is 110mph. Even the Cagiva Mitos and Aprillia RSs were flat out at the ton!
Ah, good times....

[SQL]

[RhynoCZ]

[SQL]

I mean they say 120-130 on the speedo, they are doing 100.

[TheBudhaaa]

Sprockets are 14 / 35
rpm on 6 are 10,000 I think

[gavbriggs]

[TheBudhaaa]

[RhynoCZ]

Leave the fellow slav alone.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Kickstart]

[TheBudhaaa]

[skatefreak]

Just to mention,
you have modified the air intake side (replaced the air box?).
Mr Honda certainly knew a thing or two when putting this bike together and the air/fuel is particularly important.
My Nsr will crack a ton and all that was done was remove the intake restriction and exhaust restriction however it was a UK model.
Other models may require a the CDI to be replaced/modified.

Get the original air box on there, check the jetting of the carb and get back to us!

I rode de-restricted for 4 years on the NSR, the engine gave me very little trouble tbh. An extremely reliable sports 125 2 stroke (excluding the regulators of course!).

Best regards

-Jvr

[RhynoCZ]

Didn't NSR have ram air intake?
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[skatefreak]

Nope.
It has ram air intake pipes but they are for aesthetics only.
The air box does not connect up to them.

There is a mod in which you drill some large holes, pipe the air tubes into the air box as covered in alanins 'NSRTips.doc' however I suspect you would need to alter the jetting to take advantage of this.

-Jvr

[RhynoCZ]

If you did that, you'd need to set the carburetor to rich mixture, very rich, so it could work at high speed when the amount of air is noticeably increased. I don't know if my ZXR works 100% right, but the mixture is quite rich, to compensate the amount of air coming through when it's going very fast. DFi and double throttle on modern bikes definitely solves that.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor