am in the middle of a long standing argument with my mate that a well riden nsr will dust a 400 bore stroke am i right ? cos i need to put this one to bed

Well im not sure, If they are both in standard trim then the 400 may have the edge!! Also depends where the track/road is, cadwell i think the 250 would have it, donnington and the 400 will have the space to get around quicker!!! on paper the 250 should be quicker as it has similar power to a standard 400 but is alot lighter!!!

of course this is my view as ive riddien both an NC30 and a 250 in standard trim! other comments to follow im sure...

no it wont, it all depends on the rider and the riding enviroment.

Ive ridden on the track on my CBR with quite a few NSRs and have rarely been overtaken, Stephen was the only one who managed it I think and that was at cadwell. I have also ridden in the same group as NSRs at Rockingham, Donnington and Oulton.

If it were true where are all the 2 strokes in the club races? as they are very few and the only ones are ridden by people that can really ride compared to most of the other 'club' racers and are in a differnt league.

I dont disagree that 2Ts are harder to ride fast, but they also have a number of advantages weight being one of them.

like I said it mainly comes down to the rider.
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MC21SP - Roth-tax
CBR400 - track
MC21R - sold
MC21SP - sold


Last edited by nsrmonkey on Tue Jan 16, 2007 3:21 pm; edited 1 time in total

Have witness that 2 years ago and a local dragster run (called run what you have)

2 bikes on the straight up to 400m, and was a run with RVF together with an MC21 at one point. That time i didn't have an NSR, but i was amazed how much faster the MC21 was at first 100m whereas RVF was struggling on that. MC21 leaving the RVF behind was really shocking. At a point some spectators where laughing and cheering...
Had no idea what the mods on the bikes, but MC21 looked stock i am sure of that. On the track is another matter i dont know, but there i saw it nad might be defferent

MC21 62hp@132kg
RVF 52HP@170kg

if that figues stand, the resoults are
obvious + driver for sure

Someone cover my back on that.

James

demetris74 wrote:

MC21 62hp@132kg
RVF 52HP@170kg

since when has a standard MC21 been 62BHP
_________________
MC21SP - Roth-tax
CBR400 - track
MC21R - sold
MC21SP - sold

looked standard to me at 100m distance view, but prpb he had wire splice which again was too far for me to see

I think the 21 as standard was 45BHP at 62 BHP thats gotta be the splice, airbox mod and pipes......

The RVF on the other hand was standard at 52 BHP.
_________________
MC21SP - Roth-tax
CBR400 - track
MC21R - sold
MC21SP - sold

Had an RVF back in 98 which sold 3 years ago http://www.motorcyclelane.com/rvf20.jpg , RVF can easily climp up to 65 even 75 with good tuning, exhaust system jetting HRC CDI bla bla, but my comparison was at that day that moment what i saw, and still 400s as stock are bit heavy compared with nsr, dint mention in track that another story, Have the NSR250 4 months now and only driven it when taking it home from buyer, It feels to me little above 400s as flexibility and weight, even power, as i said i only driven it one time 2 kms, and it was fckd up.

James


Last edited by demetris74 on Tue Jan 16, 2007 3:44 pm; edited 1 time in total

My RVF with HRC CDI and full Ethos system and some of Stephens magic.

and we also know where we can easily make another couple of ponys.
_________________
MC21SP - Roth-tax
CBR400 - track
MC21R - sold
MC21SP - sold

fenton wrote:am in the middle of a long standing argument with my mate that a well riden nsr will dust a 400 bore stroke am i right ?

It hurts me to say but no you are not.

Monkeys graph shows the problem, 60+bhp for 3000+rpm, change gear on the redline and never drop below that....
You'll need Steve's F3 moneypit to beat it.


And I can feel Andy sitting there with the threadlock as I type.
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Last edited by fontyyy on Tue Jan 16, 2007 5:54 pm; edited 2 times in total

Nice figures Monkey, good job on the graph..
More ponys on the RVF you ll have to consider deeper surgery, and deeper pocket.

Anyhow I feal that i will enjoy NSR more that my beloved RVF400 wich i regred 1000 times selling it.



James

funny the only thing I really miss about my NSR is the way it looked just before I sold it the noise of the clutch and the trickery of the wheels.

In the end I lost all confidence in the bikes engine and riding it became more and more of a chore.

I would have another if the right one came along at the right price.
_________________
MC21SP - Roth-tax
CBR400 - track
MC21R - sold
MC21SP - sold

Monkeys will pull a couple more hp once we have adjusted a couple of external things. Fontyyy's RVF made a good 65hp but didnt hold the power as long if i recall.

Like fontyyy says though its how useable the RVF's are which is their ace. My F3 makes over 60 for just about 2000rpm which I think is about as fat as you are going to get an NSR250.

A 400 with the same mods as a NSR250 will be pretty bloody close over a given distance. It really comes down to who has it in him to want to win.

I want to win alot, thats why I fall off alot.
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If I have to take the carbs off once more...

fontyyy wrote:

fenton wrote:am in the middle of a long standing argument with my mate that a well riden nsr will dust a 400 bore stroke am i right ?

It hurt me to say but no you are not.

Monkeys graph shows the problem, 60+bhp for 3000+rpm, change gear on the redline and never drop below that....
You'll need Steve's F3 moneypit to beat it.


And I can feel Andy sitting there with the threadlock as I type.

looking at the two i dont see a huge difference

The different is Fenton that your NSR there makes 60hp for about 150rpm, Billy's RVF makes it for 3000rpm.
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If I have to take the carbs off once more...