LAMS list bikes

**nzvlogger** · 13th February 2012, 10:22

Hey guys so i been working out some power to weight ratio's and this is what i got...

If you work out the power to weight for the limit of 150kw per ton (2240lbs) you get a power to weight ratio of 0.06 (Higher is more powerfull)

Which excludes a CBR250 88 at 0.09
My VFR400 NC30 is 0.12

Yet on the list you can have a RVF400 which is the same as mine! twice the limit ?? Whats more is i used to have a Honda Bros 650 and that was heaps quicker than my mates CBR250 and its on the list of OK bikes??

What am i missing here??

**SMOKEU** · 13th February 2012, 10:43

Are you thinking curb weights or dry weights? All bikes under 250cc with the exception of certain 2 stroke bikes are allowed under LAMS.

**nzvlogger** · 13th February 2012, 10:50

Originally Posted by SMOKEU

Are you thinking curb weights or dry weights? All bikes under 250cc with the exception of certain 2 stroke bikes are allowed under LAMS.

Im just going by dry weight, manufacture specs, is that correct?

**sil3nt** · 13th February 2012, 10:54

They add 80 or 90 kg for the rider.

*edit*
Formula here

The power output (kilowatts) is divided by the tare weight of the motorcycle + 90kg (for rider and fuel).
The result is then multiplied by 1000 (to convert to kW per tonne), i.e.

Engine power (kW)/ Tare weight (ie mass of motorcycle in kg) + 90kg (80kg rider weight + 10kg for fuel) x 1000

http://www.google.co.nz/url?sa=t&rct...CB1DjHCyPqGo3Q

**nzvlogger** · 13th February 2012, 11:01

Originally Posted by sil3nt

They add 80 or 90 kg for the rider.

*edit*
Formula here

http://www.google.co.nz/url?sa=t&rct...CB1DjHCyPqGo3Q

ahh ok that does it lol, makes sense... still seems a bit strange some of the bikes are to quick for a learner IMO, i guess thats up to the rider...

**GrayWolf** · 13th February 2012, 16:52

Well at 200Kw per tonne, the MT is off the menu, phew!!!!

**mossy1200** · 13th February 2012, 17:24

Originally Posted by GrayWolf

Well at 200Kw per tonne, the MT is off the menu, phew!!!!

your must have better tune than mine

260kg +90kg at 67kw 191kw pr tonne

if they took it at back wheel maybe a lams bike or buy 40kg of bolt on goodies maybe.LOL

**GrayWolf** · 13th February 2012, 21:30

Originally Posted by mossy1200

your must have better tune than mine

260kg +90kg at 67kw 191kw pr tonne

if they took it at back wheel maybe a lams bike or buy 40kg of bolt on goodies maybe.LOL

Bike Specs quote 230kg dry,,,, so 67.3Kw / 330 X1000 = 203.9
I think yamaha quote 239kg dry.

But nah, with the torque available? I wouldn't want to see it as a learner bike.