Power to weight restriction

[eratic]

Haha its pretty stupid that you arent allowed 2strokes but you are allowed RVF400s... that seems pretty dumb lol

[Mikkel]

Aprilia RSV250 and a Suzuki RGV250 are both way over the limit. Also the Honda CBR250 and the old Ninja ZX250R will be banned under the new law as again well over the power/weight limit. The two strokes that are under the limit will not be banned (but which ones are those?)

The 4-strokes will be fine.

Haha its pretty stupid that you arent allowed 2strokes but you are allowed RVF400s... that seems pretty dumb lol

Not so, the RVF400 only puts out 53 hps at the crank stock (was 59 hps earlier - but again emissions requirements push the numbers down). Compared to 45 hps for a ZXR250 and a CBR250RR there's not a huge difference. (There is a difference - I'll bet that the RVF400 will have a much beefier midrange and less peaky power delivery, but that is not reflected by these numbers).

Compare that to some of the unrestricted 2-strokes 250s which can put out 60-70 hps... Add to that the power delivery is abrupt, less prefictable and very peaky and you have something which is not learner friendly at all.

The 4-strokes are good learners bikes - they hold no nasty surprises. You can discuss whether they are too fast for your average 15-18 year old learner's self-discipline - but that is another discussion.

[nudedaytona]

But why regulate to ban the two-smokers now? They are all out of production, and eventually the manufacturers are going to stop making the parts for them. Then they will unfortunately die, apart from the hard core who might get the parts custom made for them. But how many people will that realistically be?

The only in production two-strokes are the race ones like the honda, maybe you could ban them from being converted to road going use, but how many people would do that.

And, with the improvements in engine and frame technology, modern 600cc sports bikes are now more powerful, easier to maintain, and probably just as easy if not easier to ride than an old two-stroke, the last of which was the 2004 Aprilia RS250. So there is already an incentive for learner and restricted riders riding 250cc two-smokes to get their full licence and upgrade to a 600 or a thou if you're bold.

So, while maybe it might be a good idea to let learners and restricted riders ride some old low-powered 600, I don't think they should ban the two-strokes. Instead, they should introduce time limits on your learners and restricted so you have more of an incentive to get your full, and make training compulsory or at least provide a discount or credit for it.

[WelshWizard]

With peyrol price going up all the time , the 250's will end up holding there price for cheap running costs

[Rollestonchick]

I got in just in time. Now have my full licence, after 6 months on restricted. Dont tell my son that he can get a bigger bike than his FZR 250cc lol, we just been thru that arguement, he with a GSXR 400cc. Tho will i be able to sell my 250cc for as much as i wanted?
Thank god for the increase on speed limit. I found that i was more of a hinderance on the road when i was on my learners doing the legal 70kms. And you would find most car drivers wouldnt be aware, that motorbike learners were speed limited. The cops never bothered me when i was doing 100kms on the open road, because i was going with the flow

[Big Zappa]

The 4-strokes will be fine.

How do you figure?

Looking at my calculations (29(at 40hp)kw/154 vs 150kw/1000) I get .18 vs .15, which looks like it would put it over...

and it's not on the Australian list either (OR IS IT?! looking at the catchall at the top of the page...)

Pity, cause it's one of the bikes I'm eyeing up :/

[Gubb]

All the 250 4 Strokes are in, the list adds bikes over the 250 limit if they fit in with the power to weight ratio.

The only ones excluded are some of the high-powered 2 Smokers.

It's all in the proceeding pages, have a read of it.

[Big Zappa]

Ok cool

[Mikkel]

How do you figure?

Looking at my calculations (29(at 40hp)kw/154 vs 150kw/1000) I get .18 vs .15, which looks like it would put it over...

and it's not on the Australian list either (OR IS IT?! looking at the catchall at the top of the page...)

Pity, cause it's one of the bikes I'm eyeing up :/

I figure that out by using 1) the right numbers and 2) the right assumptions:

1 kW = 1.431 hps -> 45 hps = 34 kW (33.56 kW...)
Let's assume a weight of 150 kgs (including fluids this weight is a significantly low estimate) and then add 90 kgs for the rider.

Power to weight ratio: 34 kW/240 kgs = 142 kW/ton - and that is being very conservative.

[Dave-]

90kg rider?

I'm 50kg, and my bike is aparently 39hp = 29.0822 so we'll say 29/200 = 145

EDIT: nevermind

[Speedracer]

Government announces new rules for motorcycles

- Improve the visibility of motorcycle and moped riders by introducing a requirement for all motorcycle and moped riders to have daytime running lights or their headlights on at all times when riding on the road

What about pedestrians, bicycles, cars? No they can be seen fine during the day without lights.
What a crock of government imposed beurocratic motorcyclist hating bullshit. Even if we all roll ourselves in reflective red tape we will get ignored by other motorists.

[Speedracer]

1234567890

[Mikkel]

What about pedestrians, bicycles, cars? No they can be seen fine during the day without lights.
What a crock of government imposed beurocratic motorcyclist hating bullshit. Even if we all roll ourselves in reflective red tape we will get ignored by other motorists.

Just be glad that they haven't put IQ requirements in place yet...

[skidMark]

How do you figure?

Looking at my calculations (29(at 40hp)kw/154 vs 150kw/1000) I get .18 vs .15, which looks like it would put it over...

and it's not on the Australian list either (OR IS IT?! looking at the catchall at the top of the page...)

Pity, cause it's one of the bikes I'm eyeing up :/

ALL 250cc 4 strokes are permitted. regardless of power.

Read the LAMS list.

[skidMark]

What about pedestrians, bicycles, cars? No they can be seen fine during the day without lights.
What a crock of government imposed beurocratic motorcyclist hating bullshit. Even if we all roll ourselves in reflective red tape we will get ignored by other motorists.

Ladies and gentlemen, i give you the future of New Zealand.