NSR250.net Forums Logo: Honda NSR 250 Forums, Classifieds and Service Manual in English. Covering All Honda NSR 250 MC16, MC18, MC21 and MC28 models
NSR250.net Forums

#
 
#
 
Performance Engineering

  • NSR250 Forums Index ‹ NSR250R Discussion
  • Members Content
  • Members Garage
  • Subscription
  • Transactions
  • FAQ
  • Search
  • Register
  • Log in

is my NSR telling the truth?!


Reply to topic   printer-friendly view
Page 1 of 1   Download Topic





colenud

 
Posts: 7
Joined: 31 Mar 2009

Location: Port Elizabeth, South Africa
    Send private message View user's profile
    Reply with quote  

is my NSR telling the truth?!

Thu Jan 07, 2010 9:03 pm » Post: #1 » Download Post

Hi guys

i live n port elizabeth, South africa and I own a NSR 150SP. 250's are super rare this side of the world, and most are wrecked. A mate and i used to ride around alot together before he crashed his bike... he had a VJ22 RGV 250. He always knew a great deal more than me about 2 strokes, and always said to me that my speedometer is inaccurate and my top speed isn't really what it appears to be. i have recently done a top end rebuild, jetted the carb and fitted a Tyga performance chamber and silencer, as well as tyga reeds.i also adjusted the powervalves. The bike pulls really hard and my top speed indicates just over 200kmh. Is this accurate? his RGV always stops at about 180kmh... i am still running the standard gearing. Was just wondering if all is as it should be?

thanks guys! Very Happy [/img]
_________________
There aren't any NSR 250's where I stay, but I love my NSR 150 SP all the same!
Back to top


Major_Tom

 
Posts: 119
Joined: 20 Oct 2009

Location: New Zealand
1994 Honda NSR250 MC28SE
    Send private message View user's profile
    Reply with quote  

Thu Jan 07, 2010 11:39 pm » Post: #2 » Download Post

Can't say I know much about NSR150s, but speedos tend to be a couple of percent out, and over 200kmph does sound a little optimistic.
Back to top


Hermit

 
Posts: 588
Joined: 08 Jun 2005

Location: Paraparaumu, New Zealand
1992 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Fri Jan 08, 2010 1:05 am » Post: #3 » Download Post

That's about 125mph which is FAST. RS125 Aprilias supposedly get just above 100mph and dyno graphs for them show about 26 horsepower at the wheel. Tyga's own graph for an NSR150 with their exhaust shows about 28 horsepower.

I had an LS125R - the other sporty two stroke made by Honda Thailand and that would indicate 100mph on the redline in 6th. Honda's figures claimed 24 horsepower @ 8500rpm at the crank for that bike.

CBR250RRs give 45 horsepower at the crank and allegedly can do 115mph.

Going purely on comparisons with other machines based on how much power they make and what top speed that allows them to do, i wouldn't think your bike could do a genuine 125mph.
_________________
After years of moaning about immigrants now i am one...


Last edited by Hermit on Fri Jan 08, 2010 10:23 am; edited 1 time in total
Back to top


paul

 
Posts: 139
Joined: 18 Apr 2004

Location: nelson, new zealand
    Send private message View user's profile
    Reply with quote  

Fri Jan 08, 2010 6:55 am » Post: #4 » Download Post

we get these 150s here in nz, all the speedos are way out, my mrs rg150 speedo goes round to 190

true speed is more like 150!

so is your nsr telling the truth, not a chance
Back to top


RobH

 
Posts: 1166
Joined: 24 Feb 2007

Location: Chippenham, Wiltshire, UK
1988 Honda NSR250 MC18
    Send private message View user's profile
    Reply with quote  

Fri Jan 08, 2010 10:25 am » Post: #5 » Download Post

Depends on how steep the hill is Twisted Evil

I remember a friends FS1E showing 60mph on a long hill and it was screaming for mercy
_________________
Why do things simply when you can complicate them
Back to top


Hermit

 
Posts: 588
Joined: 08 Jun 2005

Location: Paraparaumu, New Zealand
1992 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Fri Jan 08, 2010 10:34 am » Post: #6 » Download Post

My first bike was a restored 1974 Garelli Tiger Cross - My dad once rode beside me on his VFR down 'slack hill' in Derbyshire near Matlock and clocked me at 65mph!! LOLZ

It'd never normally pull 4th gear on the flat because it was so ridiculously tall but given a substantial hill it'd get into its 'powerband' and eventually rev out, laying waste to all in its WAKE.
_________________
After years of moaning about immigrants now i am one...
Back to top


Andy
Site Admin
 
Posts: 11950
Joined: 19 Jan 2004

Location: Devon, UK
1991 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Fri Jan 08, 2010 1:21 pm » Post: #7 » Download Post

RobH wrote:
I remember a friends FS1E showing 60mph on a long hill and it was screaming for mercy

Well my mate said the other night he's going to drill out his main jet, remove his air filter, and put a Micron on his FS1E and will do 69 on the flat into a head wind!

Mind you, this was well into the evening and he'd already had about a dozen shorts! I daren't tell you where he ended up that night! Laughing
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.


Check us out on Facebook! Please "like" our page!
Back to top


dunkenb

 
Posts: 706
Joined: 20 Dec 2007

Location: hereford .uk
1989 Honda NSR250 MC18
    Send private message View user's profile Visit poster's website MSN Messenger
    Reply with quote  

Fri Jan 08, 2010 2:09 pm » Post: #8 » Download Post

my mate reconed his fs1e would 60 too.... still managed to over take him on my aprilia AF1 50 with a gear to spare!!!
Back to top


Neal

 
Posts: 900
Joined: 01 Mar 2009

Location: Scarborough
    Send private message View user's profile
    Reply with quote  

Fri Jan 08, 2010 8:22 pm » Post: #9 » Download Post

Me mate Dave used to put cooking oil in his tank instead of 2t Embarassed
Back to top


Major_Tom

 
Posts: 119
Joined: 20 Oct 2009

Location: New Zealand
1994 Honda NSR250 MC28SE
    Send private message View user's profile
    Reply with quote  

Fri Jan 08, 2010 8:59 pm » Post: #10 » Download Post

Hermit wrote:That's about 125mph which is FAST. RS125 Aprilias supposedly get just above 100mph and dyno graphs for them show about 26 horsepower at the wheel. Tyga's own graph for an NSR150 with their exhaust shows about 28 horsepower.

I had an LS125R - the other sporty two stroke made by Honda Thailand and that would indicate 100mph on the redline in 6th. Honda's figures claimed 24 horsepower @ 8500rpm at the crank for that bike.

CBR250RRs give 45 horsepower at the crank and allegedly can do 115mph.

Going purely on comparisons with other machines based on how much power they make and what top speed that allows them to do, i wouldn't think your bike could do a genuine 125mph.


Before I got my 28SE I had a '92 CBR250RR, which made 45HP on the dyno, and given a long enough bit of road got close to 200 kmph.

Maybe if you had a downhill runway you could get the 150 to 200 Razz
Back to top


Matt@TYGA
Supporter - Vendor
Supporter - Vendor
 
Posts: 1818
Joined: 15 Sep 2004

Location: In my office chair, in Pattaya, Thailand
    Send private message View user's profile Send e-mail Visit poster's website
    Reply with quote  

Mon Jan 18, 2010 7:54 am » Post: #11 » Download Post

Andy wrote:
RobH wrote:
I remember a friends FS1E showing 60mph on a long hill and it was screaming for mercy

Well my mate said the other night he's going to drill out his main jet, remove his air filter, and put a Micron on his FS1E and will do 69 on the flat into a head wind!

Mind you, this was well into the evening and he'd already had about a dozen shorts! I daren't tell you where he ended up that night! Laughing


There's no chance of a Micron going in it Smile

You can't say where 'he' ended up that night because 'he' still can't remember!

Got new shoes last night
Back to top


Andy
Site Admin
 
Posts: 11950
Joined: 19 Jan 2004

Location: Devon, UK
1991 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Tue Jan 19, 2010 10:17 pm » Post: #12 » Download Post

Matt@TYGA wrote:
There's no chance of a Micron going in it Smile

You can't say where 'he' ended up that night because 'he' still can't remember!

Got new shoes last night

Did you ever find your shirt, or did you have to buy a new one of those too?! Laughing

As for the pipe, well, could even have been a Nikon mentioned for all I can remember (I do recall that name came up in conversation somewhere during the evening!) but I'd too had a good dozen or more shorts by that early part of the evening, so to be honest all was not that clear to me either! Smile

I didn't say TYGA pipe though, just to preserve some anonymity for you, but I see you're not bothered about that! Very Happy
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.


Check us out on Facebook! Please "like" our page!
Back to top


Reply to topic   printer-friendly view
Page 1 of 1   Download Topic

NSR250R Discussion

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

  • NSR250 Forums Index
  • All times are GMT
Powered by phpBB © 2001, 2005 phpBB Group


Hosted by NSR250dotNET © 2008 NSR250dotNET