Hitting the rev limiter on a bike

[andynoquantum]

In first gear, lets say your average 600cc kind of thing

What speed would you presume that is in MPH?

It's er...for a project

[Tampon]

andynoquantum said:

In first gear, lets say your average 600cc kind of thing

What speed would you presume that is in MPH?

It's er...for a project

Depends on the bike, my old cbr would hit 45-50 in first.

A Hayabusa would probably break the speed limit on the motorway in first.

[Six Fiend]

ZX-12R does according to my sources.

RC30 and RC45 also.

Rather a lot of others too.

Some of my 600s have all been good for around 60-70, thinking CBRs, FZR.

Edited by Six Fiend on Wednesday 23 April 15:27

[tonyvid]

Is that in a sort of "I was only in first, Officer, no way was I going that fast" project?

[Six Fiend]

Does sound like it rather

[andynoquantum]

tonyvid said:

Is that in a sort of "I was only in first, Officer, no way was I going that fast" project?

There's some dick bouncing what I think is an SV off the limit up and down the road every 5 minutes. Flame suit at the ready, but fairs fair - it's half 3, there's about 300 kids about to kick out of a school half a mile away, a vets over the road and some tt with his wanking hand wrapped around the throttle

I might go and have a word, it's more annoying than anything as I'm working from home and cant hear a fking thing when it goes past

[H2DaE]

andynoquantum said:

with his wanking hand wrapped around the throttle

How do you know he's not a leftie or a fan of 'the stranger'?

[andynoquantum]

H2DaE said:

andynoquantum said:

with his wanking hand wrapped around the throttle

How do you know he's not a leftie or a fan of 'the stranger'?

Good point, that'll be the icebreaker I think

[Six Fiend]

Suffice to say if it's bouncicg off the limiter and he's not slipping the clutch he's speeding and going to shag it.

Maybe like lots of them his 2nd gear is fecked

[stigmundfreud]

depends on the gearing and I cannot remember from my 600 days. Prob 60 tops but more likely 40 or 50

[stigmundfreud]

Six Fiend said:

ZX-12R does according to my sources.

RC30 and RC45 also.

Rather a lot of others too.

Some of my 600s have all been good for around 60-70, thinking CBRs, FZR.

Edited by Six Fiend on Wednesday 23 April 15:27

I strongly doubt your fzr could top 70 in first as fir the first bikes in your list hardly 600cc's are they

Also if your CBR is of the same era as your FZR again I doubt that. The old CBR was as asthmatic as could be with a ridiculously low rpm for red line.

[Chilli]

Dunno where my first response went...anyway, my 2006 R6 used to hit around 70 in first. Someone mentioned the ZX10...this will do over 100 in first.

Might want to move this thread over the the biker bater section!

[andynoquantum]

Wasnt necessarily about bikes as such, although I'd probably get a better answer.

I was more curious about the rough speed, firstly as it's a bit inappropriate in the location, but also whatever it is really didnt take long to hit the limiter, maybe a few seconds if that. I know yer average bike is quick, but

[Buzz word]

Why not just find out the wheel radius including the tyre, first gear ratio, rev limit, final drive ratio and just work it out. Get the engine RPM at the limit times the drive ratio, times final drive ratio. You know then how many revolutions the wheel is doing in a given minuite.

Then work out the wheel circumferance and times that by the RPM so you know the distance traveled. You then know how many meters you have traveled in a minuite. Divide by 60 to get meters a second and then times by 2.23 to convert to MPH. You then know exactly how quick it will go at the limit.

I did pretty much the reverse to calibrate my speedo for my Tiger. It was pretty accurate when it went on the rollers at the SVA. I got the gear ratio's fron the quaiffe site.

Edited by Buzz word on Wednesday 23 April 16:02

[Cussy]

My GPZ1100 does around the 70mph mark, the RF600 did around 55mph and the ZX6R about 65mph. Suffice to say, if he's riding it up a residential road then he's a tad over the limit.... by 30 odd mph!

[andynoquantum]

Buzz word said:

Why not just find out the wheel radius including the tyre, first gear ratio, rev limit, final drive ratio and just work it out. Get the engine rpm at the limit times the drive ratio times final drive ratio. You know then how many revolutions the wheel is doing in a given minuite.

Then work out the wheel diameter and times that by the rpm so you know the distance traveled. You then know how many meters you have traveled in a minuite. Divide by 60 to get meters a second and then times by 2.23 to convert to MPH. You then know exactly how quick it will go at the limit.

I did pretty much the reverse to calibrate my speedo for my Tiger. It was pretty accurate when it went on the rollers at the SVA. I got the gear ratio's fron the quaiffe site.

I think I'll just settle for shouting "wr" from the window

[stigmundfreud]

andynoquantum said:

Wasnt necessarily about bikes as such, although I'd probably get a better answer.

I was more curious about the rough speed, firstly as it's a bit inappropriate in the location, but also whatever it is really didnt take long to hit the limiter, maybe a few seconds if that. I know yer average bike is quick, but

never ridden a bike properly before have you?

[Hyperion]

Borrow a tractor and pull out in front of him as he goes passed - job done.

[69elan+2]

I'm working from home today as well - but I'd be far happier listening to the sound of a bike on the limit, rather than the little cu-stards next door kicking a ball against the house!

[Buzz word]

andynoquantum said:

Buzz word said:

Why not just find out the wheel radius including the tyre, first gear ratio, rev limit, final drive ratio and just work it out. Get the engine rpm at the limit times the drive ratio times final drive ratio. You know then how many revolutions the wheel is doing in a given minuite.

Then work out the wheel circumferance and times that by the rpm so you know the distance traveled. You then know how many meters you have traveled in a minuite. Divide by 60 to get meters a second and then times by 2.23 to convert to MPH. You then know exactly how quick it will go at the limit.

I did pretty much the reverse to calibrate my speedo for my Tiger. It was pretty accurate when it went on the rollers at the SVA. I got the gear ratio's fron the quaiffe site.

I think I'll just settle for shouting "wr" from the window

Fair play, it will probably make you feel better than furiously waving a calculator at them.

I hadn't got the thread quite right, if somones tearing up and down a residential area they are pretty much certainly speeding.

I'll get my coat