What do people think of an Aprilia RS250???

[McJim]

As for safety... buy a yellow helmet cause only cool people have them

A yellow helmet can be a sign of a really nasty yeast infection dude.

Get some antibiotics.

[FilthyLuka]

hey just cos a gn250 strugles to do 120 doesent mean that mine wont do 200. yours is heavy + a cruiser and its a single cylinder. dont go saying mine wont do it untill i have tryed cos if it somehow magicly it manages to do 200 or atleast 190 i will laugh in your face

a gpx250 = 138KG
a gn250 = 140 kg
a cbr900 = i dont know... feels about the 190 mark when i ride it

a gpx250 = 26 HP at the rear wheel
my gn250 = 22 HP at the rear wheel (not stock obviously, it puts out 17 stock)
my cbr900rr = 120 BHP

obviously my current motorcycles directly affect the top speed of a 250 ninja... (sarcasm)

Oh and maximum speed
gpx250: 105 mph (160 km/h)
gpx 0-100: 5.75 second

adding a tooth to the front sprocket wont add an extra 40 km/h i dont think. If you get a new exhaust and jet the carb appropriately though you can easily get that 0-100 number down. if you add more than one tooth to the front sprocket youll make it accelerate like a pig (and not a stuck one).

yours is heavy + a cruiser and its a single cylinder.

2 Kg's heavier, not a cruiser any more (new footpeg bracket to move em back, lost the come to jesus handle bars) and a cagiva mito is a single cylinder, and that hauls arse. So's a husky SM610 and that hauls arse aswell...

and i trust you didnt mean to sound snotty yes?

strugles to do 120

Not really... the vibrations just arent that nice... a stock one does however struggle to do 150... apparently a dude on this forum got it to 170 or something down a hill with some wind... lol

[Jeaves]

A yellow helmet can be a sign of a really nasty yeast infection dude.

Get some antibiotics.

or make some vegemite

[2strokegirl]

im pretty sure theyr heavyer arnt they more like 160 standard?? well hey if a gn will do 170 il do 200 on a gpx no sweat. im just saying when i took a gn for a ride they took agz to get to 100 and it was pushing it to do 120.

4 less teeth on the back they were saying.
the cagiva is a 2 stroke isnt it?? my brothers kr150 done 180.
single 4 strokes arnt that "fast".

far out 170 on a gn.. that would of rattled the bolts loose haha

[Seraph]

far out 170 on a gn.. that would of rattled the bolts loose haha

Jesus....170 on a gn would scare the shit outa me!!!

[FilthyLuka]

im pretty sure theyr heavyer arnt they more like 160 standard?? well hey if a gn will do 170 il do 200 on a gpx no sweat. im just saying when i took a gn for a ride they took agz to get to 100 and it was pushing it to do 120.

4 less teeth on the back they were saying.
the cagiva is a 2 stroke isnt it?? my brothers kr150 done 180.
single 4 strokes arnt that "fast".

far out 170 on a gn.. that would of rattled the bolts loose haha

down a hill... lol. And no, a gn tanked up with oil and fuel weighs 140kgs. as for taking ages to get to 100, i dont know what your talking bout, mine gets to 100 in 5.4 second (its good knowing a dude with a radar gun )... 4 less teeth on the back is kinda the equivalent to one and a bit on the front...

single 4 strokes arnt that "fast".

i know several people that will dissagree... mainly one dude that just bought a crf450... husky sm610, 142 kilo's wet and puts out close to 75 horsepower...

well hey if a gn will do 170 il do 200 on a gpx no sweat

no, you wont. A minor gear change wont bump your top speed up 40km/h. If you want to achieve that speed but retain SOME form of acceleration, youll need to do some serious engine work and slightly more regearing...

[FilthyLuka]

far out 170 on a gn.. that would of rattled the bolts loose haha

the joys of loctite...

[Back Fire]

single 4 strokes arnt that "fast".

my DR is a single cylinder 4 stroke... and I've topped out the speedo on it... which is 180km/h... friend clocked me at 200 on it...

[Seraph]

MM just about time this thread finished isnt it? We're just sliiightly off topic..

[Back Fire]

here... the GPX...

http://www.kawasakisa.co.za/details....products_id=80

"Weight dry/wet: 138/161 kg"

"Performance stats:
0--100 km/h: 5.75 s
Maximum speed: 168 km/h
Max power: 27,9 kW @ 11000 rpm
Max Torque: 24,5 Nm @ 10000 rpm"

[mud boy]

my DR is a single cylinder 4 stroke... and I've topped out the speedo on it... which is 180km/h... friend clocked me at 200 on it...

then y does bike say something slow 200km/h thats not slow that the top speed of my RG150!!!!

[FilthyLuka]

here... the GPX...

http://www.kawasakisa.co.za/details....products_id=80

"Weight dry/wet: 138/161 kg"

"Performance stats:
0--100 km/h: 5.75 s
Maximum speed: 168 km/h
Max power: 27,9 kW @ 11000 rpm
Max Torque: 24,5 Nm @ 10000 rpm"

heh, so 138 is DRY weight... in that case HA! my bike is lighter than yours :P

lol, im done being a dick for today... have fun with your new bike and ride safe. (oh, i have only one peice of advice, when you want to find out top speed, dont stare at the speedo....)

denis

[Back Fire]

then y does bike say something slow 200km/h thats not slow that the top speed of my RG150!!!!

me no comprenda?

[mud boy]

me no comprenda?

comprenda what does that mean?

[Ixion]

Raising the gearing won't give any more top speed under neutral conditions (flat, no wind). Unless as standard the machine hits a rev limiter or red line in top. The latter would be pretty unusual and unheard of on a 250, the latter is a very artificial situation (it's not actually changing your top speed just avoiding the rev limit).

Higher gearing will allow a higher speed downhill. So if you get your jollies by seeing some magic number on the speedo, flat out down a steep hill with a tail wind , go for it. Not sure what it proves m'self.

At the sort of speeds being talked of here, wind resistance is enormously more imprtant than weight. In strict theory weight doesn't affect top speed at all, just acceleration. But in reality higher weight means a higher rolling resistance and usually wider tyres , both of which will reduce top speed.

An aerodynamic body design (the rear is more important than the front), will add anything up to 50kph to maximum speed.

Anybody on a learner's licence who is worried about top speed is a fool. And needs a nice relaxing bath in Gene-O-Kleen - "Evolution you can see". Learn to ride. Properly. Safely. Then start thinking about riding fast.