I understand young lads either not bothering or de-restricting their bikes. My first bike was a brand new ER50, restricted to 30mph in 1980. Needless to say my first job was to split the exhaust in half and take out the restrictors then swap the front sprocket for a DT 14 tooth. A weeny bit slower acceleration but 48mph downhill!!

I had mates who rode 400 superdreams stickered up as 250's, one lad passed his test on his so is all this restricting bo**ocks the answer or should they stick with maximum engine size and let peeps enjoy their bikes???

Whichiever way you do it your restricting the rider which is a good thing for learners. Having a learner out on an unretricted large sports bike is like giving a five year old a loaded gun. if it's done on engine size then they'll just keep upping the power. a mix probably would be good. engine size and a cosponding power limit for size of engine. would be costly though for just uk market.                                                                                                                                                                              

I think Blues is right .. up to a point lol!   I think limiting it by engine size is not the way to go, as he quite rightly says, all they'll do is keep increasing the power.   I personally think that what they've got now is pretty much right.  Not a fan of DAS and never have been as I've mentioned several times before.  Sticking a novice onto a modern unrestricted sports bike is crazy in my opinion.    I do think that a maximum power and a separate maximum power to weight ratio is the way to go, but would suggest that the current restrictions are slightly on the low side; perhaps 40-45bhp is the ideal?   This would have two advantages from what I can see.   Firstly it would offer less of a jump to a large sports bike than the current restriction of 33bhp.  And secondly, with far more machines making no more than 45bhp as standard than there are those making 33; to encourage novices to buy restrictor kits for larger bikes instead of simply buying within the sub-45bhp range, those kits would have to be priced more competitively.                                                                                                                                                                                 

Do not profess to be an expert on the matter just posting a news story which i thought may be interesting to some folk and useful to others