Power to Weight Ratio, log book problem

thecivvie

Hi

I have a Kawasaki Vulcan 400, but for some reason the log book says that the power to weight ratio is 0.00000. I think the bike works out at .1525. Do I need to get this corrected or what. I am thinking of getting it on a dyno just to test how many of her horses she has lost, she is a 1995

cantdecide

I wouldn't bother, unless it was to satisfy your own curiosity. Insurance etc will base their quotes etc on the factory numbers.

See here.

http://www.boards.ie/vbulletin/showthread.php?p=71427561

thecivvie

Not too worried, was just wondering in case the boys in blue want to see it, as I am going on the p/w and not bhp figure.

May get her dyno'd anyway to see how many of her horses have bolted since new

cantdecide

thecivvie wrote: »

May get her dyno'd anyway to see how many of her horses have bolted since new

You probably don't want to know

doctorchopper

i've had 6 bikes and they all say that in the log book, don't think they really care about power to weight ratio here

thecivvie

cantdecide wrote: »

You probably don't want to know

You could be right

doctorchopper wrote: »

i've had 6 bikes and they all say that in the log book, don't think they really care about power to weight ratio here

OK, so how do the traffic boys sort it for us riding bigger bikes using the p/w ratio

jameshayes

thecivvie wrote: »

You could be right




OK, so how do the traffic boys sort it for us riding bigger bikes using the p/w ratio

I didn't think it was a pick'n'mix which rule you pick - i was always of the opinion that it's 33bhp with a PW ratio of lower than xx (cant remember)

thecivvie

No going to get into that debate. I asked a friend of mine and he has given me his view on it, he is a final year law student

thecivvie

jameshayes wrote: »

I didn't think it was a pick'n'mix which rule you pick - i was always of the opinion that it's 33bhp with a PW ratio of lower than xx (cant remember)

Just saying, this is from the RSA website:

" person applying for a first-time motorcycle learner permit in category A is restricted to driving motorcycles with an engine power output not exceeding 25kW or with a power/weight ratio not exceeding 0.16kW/kg."

Reference

jameshayes

thecivvie wrote: »

Just saying, this is from the RSA website:

" person applying for a first-time motorcycle learner permit in category A is restricted to driving motorcycles with an engine power output not exceeding 25kW or with a power/weight ratio not exceeding 0.16kW/kg."

Reference

or is an operative term... ie... it cant be more than 25kw's OR exceed .16kw/kg

cantdecide

We need a coin jar around here for when anyone starts this debate < for the kajillionth time>. It would more than pay for the Christmas party.

thecivvie

jameshayes wrote: »

or is an operative term... ie... it cant be more than 25kw's OR exceed .16kw/kg

No that is called NOR, a legal friend of mine said a court would go with either option but not both

cantdecide wrote: »

We need a coin jar around here for when anyone starts this debate < for the kajillionth time>. It would more than pay for the Christmas party.

Yeahhhh, can I come

AgileMyth

cantdecide wrote: »

We need a coin jar around here for when anyone starts this debate < for the kajillionth time>. It would more than pay for the Christmas party.

There was a Christmas party:eek:

Cheers for the invite guys:D

sleepysniper

After my test the tester said that if I were to drive another bike not to forget it would have to either a)be resticted or b)comply with the P>W rule.

So it is one OR the other. Not both.

unclebill98

The majority of shops sell bike with the 'or' quote. I'll leave this discussion now....

thecivvie

to be honest, I think the rule would have to be contested in a court to know for sure. I can see both sides. I believe that there is a change in 2013, so maybe they will clarify it

doctorchopper

its a different one all right, i know when you go to register a bike the criteria for vat is 6000km OR over 6 months. I brought a bike in it was over 6 months old but under 6000km and they charged me vat, so i would say it has to adhere to both restrictions, but that is just my opinion

thewatch

thecivvie wrote: »

No that is called NOR, a legal friend of mine said a court would go with either option but not both



Yeahhhh, can I come

sleepysniper wrote: »

After my test the tester said that if I were to drive another bike not to forget it would have to either a)be resticted or b)comply with the P>W rule.

So it is one OR the other. Not both.

Your both wrong. It has to meet both criteria. This has been proven in writing by the RSA. End of

thecivvie

thewatch wrote: »

Your both wrong. It has to meet both criteria. This has been proven in writing by the RSA. End of

I have seen this and to be honest I am surprised but at the end of the day, it will be a court who will have the final say. Someone will test the definition and that will be final.

sleepysniper

thewatch wrote: »

Your both wrong. It has to meet both criteria. This has been proven in writing by the RSA. End of

Right so your tellin me a member of the RSA is wrong.:rolleyes:

I think its you thats wrong.

sleepysniper wrote: »

After my test the tester said "if I were to drive another bike not to forget it would have to either a)be resticted or b)comply with the P>W rule."

So it is one OR the other. Not both.

thewatch

sleepysniper wrote: »

Right so your tellin me a member of the RSA is wrong.:rolleyes:

I think its you thats wrong.

what are you bladdering on about??:rolleyes::rolleyes:


Here's a copy of the post on another forum

email and reply from RSA

"Hello,
could you please help me clarify the the rules covering the restriction on a category A Lerner permit and the first 2 years for full A licence.
this is what i have been told by a motorcycle dealer, can you confirm if this is true or not;

"Any person over the age of 18 taking out a provisional licence for the first time could ride a motorcycle with a power in excess of 25kw provided the power/weight ratio does not exceed 0.16kw/kg or similarly could ride a motorcycle with a power/weight ratio in excess of 0.16kw/kg provided the power does not exceed 25kw."

many thanks,"

"Thank you for contacting the Road Safety Authority.

The regulations can sometimes be misleading however I’ll try to explain this as best I can.

When the regulations state “engine power output not more than 25kw or with a power/weight ratio not more than 0.16kW/kg”, it doesn’t mean one or the other, it means both criteria must be met i.e. the engine power output not more than 25kw or the power/weight ratio not more than 0.16kW/kg. Either cannot be exceeded.

Regards

Mary Brogan
Driver Licensing Section"

sleepysniper

thewatch wrote: »

what are you bladdering on about??:rolleyes::rolleyes:


Here's a copy of the post on another forum

email and reply from RSA

"Hello,
could you please help me clarify the the rules covering the restriction on a category A Lerner permit and the first 2 years for full A licence.
this is what i have been told by a motorcycle dealer, can you confirm if this is true or not;

"Any person over the age of 18 taking out a provisional licence for the first time could ride a motorcycle with a power in excess of 25kw provided the power/weight ratio does not exceed 0.16kw/kg or similarly could ride a motorcycle with a power/weight ratio in excess of 0.16kw/kg provided the power does not exceed 25kw."

many thanks,"

"Thank you for contacting the Road Safety Authority.

The regulations can sometimes be misleading however I’ll try to explain this as best I can.

When the regulations state “engine power output not more than 25kw or with a power/weight ratio not more than 0.16kW/kg”, it doesn’t mean one or the other, it means both criteria must be met i.e. the engine power output not more than 25kw or the power/weight ratio not more than 0.16kW/kg. Either cannot be exceeded.

Regards

Mary Brogan
Driver Licensing Section"

Funny then, that my tester told me otherwise.

Del2005

unclebill98 wrote: »

The majority of shops sell bike with the 'or' quote. I'll leave this discussion now....

The majority of sales people will tell you anything to get the sale as they aren't the ones who get done for driving illegally. I'd say some are still telling people not to worry about the restriction at all.

At the end of the day it's always the operators job to ensure they are legally allowed drive the vehicle.

LookBehindYou

The figures for each bike are as stated by the manufacturer, they are the figures that the insurance companies go by.
If the bike has lost a few horses, it might save you having to put in a restrictor, but the insurance co may ask for a restriction cert.
A restriction cert could be issued if the bike was tested(dynoed) and found to be -25kw (33bhp)
Note : there is a big difference in insurance costs between a factory resticted bike and an aftermarket restriction. Same bike could be group 11 aftermarket restriction, but only group 6 if a factory restriction.

thecivvie

Thanks LookBehindYou, I am getting her dyno'd anyway.