Determining top speed?

[kiwifruit]

Have ya seen Ghost Rider?

Just copy him.

You mean gear the bike down so its showing 30% faster than actual speed?

[Headbanger]

meh, If I can crank my HD up to 200km/h and hold her there then it should be piss easy to do it on a sprots bike.

If you want just send me the bike, ill return it with a nice little certificate showing you its indicated top speed with me on it.

[Mikkel]

Ask the police for help, then you'll figure out your speedometer deviation as well. Won't cost you too much either...

[bogan]

as with all such things, google it :slap:

[ukusa]

crate her up, we're off to Bonneville

[ducatilover]

An 02 r1 will do the speed limit. Nothing like a gt250p hyosung though

[Flip]

Hows about you go to the race track. Do your speeding there and get it out of your system.

[hospitalfood]

i have only ever used the tried and trusted method of finding a straight and speeding.
neither of the ones i have at present go very fast.
nothing over 220 indicated

[Subike]

meh, If I can crank my HD up to 200km/h and hold her there then it should be piss easy to do it on a sprots bike.
.

shit im just changing into 5th at that speed! and its not even a sports bike
just a 30year old jappa!

move to a rural zone, find a good straight, learn the habits of the local cop, bide your time, and on a night when the moon is full, do you stuff.

otherwise look out for spped trials days, Im sure there are several events around the country each year where you can do this test.
Like South Erie Rd in Nth Cant, where they close the road off once a year for this very reason.

[TOTO]

Wairarapa flying quarter mile.
Google "Gladstone cliffhanger".They've got it on that website.

It's on twice a year,and i think the next one is in october.

faking brilliant. I'll be there

[ready4whatever]

mate go to the matata straights in eastern bay of plenty. 13 km of straight flat road

[longwayfromhome]

The use of the qualifying phrase "in reality" means you can't rely on your speedo. General method these days is a GPS, else the suggested dedicated meets which have radar.

When doing this for the LT in the US, I even had the luxury of one of the riders with me being a cop....made it all official-like....kinda satisfying.

[vifferman]

Most sportsbikes will get on to the limiter in top with or without wind resistance, so what you would see on a dyno would be pretty much what a real world top speed would be.

You should have said "many", not most. Many sprotsbikes are actually overdriven in top gear for economy reasons, and won't pull redline.

The other thing is drag is actually exponential rather than linear in nature, so it takes a surprising amount of horsepower to oversome wind resistance and reach huge velocities, which is why so few production bikes (apart from those of most KBers, of course) can actually crack 320km/h (200mph).