[A2 License Restrictions] - Working out what can be ridden

[iginge]

Hi all,

I hope I'm not duplicating posts here after the recent topic and indepth conversation of what can and cannot be ridden in the UK under the A2 License I thought it would be worth posting how to work out the power to weight ratio of any given bike to see if it meets the restrictions.

The A2 UK License Restrictions as of 13/01/2015.

"Category A2 – minimum age 19
motorcycles with a power output not exceeding 35 kW.

Standard motorcycle up to 35 kW (and a power-to-weight ratio not more than 0.2 kW per kg), bike mustn’t be derived from vehicle more than twice its power"

In simple terms;
Upon passing, the rider is restricted to bikes with a limit of 35kW/47bhp and a power-to-weight ratio of no more than 0.2kW/0.26bhp per kg

- The original specifications of the bike cannot be more than 94bhp.
- The restricted specifications of the bike must be 47bhp (35kw) and not exceed.

The above may just all be mumbo jumbo and look like information repeated.

And honestly until recently I didn't understand the whole "power to weight" ratio and what bikes can be ridden under the new laws, here's how to work it out.

1) Enter the motorbike name, model and year in the search bar eg; (Honda CBR 400 rr 1993)
2) Choose from the list of bikes (correct year) if it doesn't take you to the specification sheet autoatmically
3) Enter the information from the specification sheet into the calculator
4) If the calculation comes out at more than 0.200 (it cannot be ridden without a restriction kit, refer to below to see if it can be ridden with a restriction kit).

Motorbike original specifications;
https://www.motorcyclespecs.co.za/index.htm

Power to weight ratio calculator;
https://measurespeed.com/power-to-weight-ratio-calculator.php

The above calculates if the vehicle can be ridden at stock specifications, so what about with a restriction kit?

As far as I am aware simply entering the new "37bhp" restriction as the horse power and the bikes original dry weight should give you the power to weight ratio with the restriction.

Hope this helps

[Albigularis]

Buy a Street Triple, get a dodgy restrictor that falls out easily, with a restriction certificate and show them this if anyone questions the 94bhp thing-

https://i.imgur.com/JLdBucy.png

Done.
____________________
Biking history so far-
Aprilia RS125 - Kawasaki ZXR400 - Triumph Street Triple R - Suzuki GSXR1000 L3 - BMW R1200GS - Kawasaki Z1000 - Kawasaki ZX10R C1H - Ducati Multistrada 1200 S Touring - Suzuki Hayabusa

[iginge]

As far as I am aware that list of simply a list of bikes that are suitable for the test itself to be taken on not an exclusive list of bikes that can be ridden.

There are endless amounts of popular motorbikes that are not on that list that are ridden by many learners, Kawasaki Ninja 250 being the biggest example.

The above can be used however to inform learners of what bikes to buy before getting the A2 license if they wanted to take the test on their own bikes, useful for some possibly.

But most helpful for people who are going to buy an A restricted bike for there A2 license, therefore meaning that when they want to take there A tests they can do so without the use of a training school.

[Az]

There's a link in my sig' ... Click & read

[iginge]

[Alpha-9]

XJ600 and go with devitts

they didnt ask for certs
____________________
Fzr-600 1999

[Albigularis]

[Alpha-9]

Everyone wanted one from me
____________________
Fzr-600 1999