What do people think of an Aprilia RS250???

[xwhatsit]

145 kg is nothing i dont even think theyr that heavy maby you just need to grow some muscles. the fairings would make it more areodynamic thus making it easyer to go faster plus bikes without fairings diserve to be parked in the middle of the road and left there. now dont forget this is a new gpx performance has improved a fuck load from the older models il get it to 200 just watch me. lol.

Well I'm sure it's lighter than your old cruiser, but still... hmm... a lot of bike for a 250cc engine to carry around. That's 145kg dry, so about 165kg+ fueled and oiled.

Fairings do squat until you get them on a race track, especially the side ones. Some pretty long threads going back a long time here on KB about this topic.

bikes without fairings diserve to be parked in the middle of the road and left there.

I'd be careful of comments like that when probably ~60%+ of the bikes on this forum lack fairings. I'm a mellow sort of lad, so me and my bike won't get offended at that. But watch out for GiJoe1313, he's a vicious bastard wot knows kung fu and will kick your arse if he sees that

[Jantar]

145 kg is nothing i dont even think theyr that heavy maby you just need to grow some muscles. the fairings would make it more areodynamic thus making it easyer to go faster plus bikes without fairings diserve to be parked in the middle of the road and left there. now dont forget this is a new gpx performance has improved a fuck load from the older models il get it to 200 just watch me. lol.

200kmh at 210kg (I'm guessing your weight to add to the bikes wet weight) will require at least 63 HP. What HP does your bike produce?

[xwhatsit]

200kmh at 210kg (I'm guessing your weight to add to the bikes wet weight) will require at least 63 HP. What HP does your bike produce?

The Ninja's engine is a vertical in-line twin, displacing 248cc. Kawasaki claims it puts out around 33 HP, and most dyno testing seems to reveal 23-28 HP at the rear wheel.

That site also says a claimed dry weight of 304lbs, which is about 140kgs, so I was slightly out there. Still looking at 165kgs wet, fully fuelled even more.

Is there a mathematical formula for working stuff like that out? I take it you just take a general drag coefficient for all motorcycles.

[Mr. Peanut]

200kmh at 210kg (I'm guessing your weight to add to the bikes wet weight) will require at least 63 HP. What HP does your bike produce?

I've hit 200km/h indicated.

I weigh 85 + bike + fuel = 235kg, how much HP I got?

Ninja tops out at about 160 indicated...

[Seraph]

200kmh at 210kg (I'm guessing your weight to add to the bikes wet weight) will require at least 63 HP. What HP does your bike produce?

36 HP at the crank & 26 at rear wheel....if evrything is still stock & manufactures specs are on target....Hey, all she has to do is switch the numbers around...36 HP (hides & switcharoo's) = 63 HP!
If only It was that easy to gain 27 HP....
Oh, full wet weight is 161 Kg btw

[zeocen]

If you ask me you made the wrong choice of bike if you want to hit an unrealistic top speed. ZXR's are there for a reason. Granted they'd probably be thrashed and over priced but by the sounds of it - that's where your bike's headed.

Good luck in getting 200+kmph, I'll eat my hat when I see it. Until then, you might want to think of becoming a safe rider in all conditions, on all roads, in all corners, rather than just in a straight line. <-- All in my extreme personal opinion of course.

GPX is a lot of things, but realistically, it's not a fast bike by any standards, it's a great commuter with a decent top speed that's capable of highway speeds. It's not a CBR or ZXR.

I'll probably get the burnt end of the stick for saying this, but I really can't help but think this lass is a female knockoff of SkidMark, who also made almost-scrap metal of a GPX.

[2strokegirl]

lol. il get back to you when i get the exausts and sprockets done. wow thats funny iv been bagd off cmpleatly in the last 2 pages . most of you better hope you never run into me you might find yourself with a bike that has no wheels.

[Seraph]

Chill out chicky...All we're saying is it's going to be reallllly hard to do....even if you do change the sprokets you'll be loosing acceleration to get a better top speed you'll hardly ever use...BUT if that's what you want then good luck ^_^

[CM2005]

you remind me of my mates little sister. if you want 200 clicks outta ya GPX, put a KX500 motor in it! Try it at the track, or down the beach northland style!

[Back Fire]

you remind me of my mates little sister. if you want 200 clicks outta ya GPX, put a KX500 motor in it! Try it at the track, or down the beach northland style!

oh hell yeah that'd be mad fun

[Seraph]

you remind me of my mates little sister. if you want 200 clicks outta ya GPX, put a KX500 motor in it! Try it at the track, or down the beach northland style!

oh but thatd defeat the purpose!! half the fun is finding out how to push a 250 past 200......

[gijoe1313]

I guess this is all done in the best possible taste!

Hong Kong Fooey, faster than the naked eye ... as for the ol'nekkid vs fairings. Meh, whatever floats your boat, rocks your world, makes you swing ... it's all good, two wheels of freedom is all we need!

Can't we all just get along? Oh the humanity of it all! What about the children? And has anyone thought about the dolphins?

And ... my little RZ250 is sans fairings also!

[Back Fire]

tie it to a faster bike....

[aff-man]

I only know of I think 4 250's that would break the 200km/h barrier (and thats real 200 not indicated 200 which would probably only be about 185-190)

I got my zxr250 up to 195 indicated and that was ringing it's nuts off on a slight downhill..... and i'm not the fattest guy around. I think I was just over the 60 mark when that was done. And the zxr put out about 6 or more HP that the gpx......

That being said you could gear any bike to go over 200km/h..... you'll just need to find a masssive straight to let smaller bikes wind up to that.... When will people get that straight line speed is bullshit unless you're pulling sub 11 sec quarter miles..... It's like that bikerboyz movie. Tried to make going in a straight line at car speeds hard...... go at 100 through the tight twisties without dropping pace or running wide more challenging and IMHO way more fun.

[xwhatsit]

tie it to a faster bike....

Heheh I often want to do that to the scooter riders at the head of the lights in the CBD... put my hand out and give them a tow so they don't get squished by the traffic behind ^_^