Dommie cuts out?!

[switch]

well basically its just a washer that acts as an orifice plate between the head and the carb. so it limits flow of mixture and therefore power to 33bhp as u said. Massively expensive but I think thats more due to the paperwork and registration of it so the paperwork says I own a restricted machine. I think limiters on how much u can open the throttle is a far better idea like they do with most injected bikes.

Yea it is a pretty pointless exercise really and I've hardly noticed any difference at all. But to that argument I may as well keep it on till I can legally remove it and live with it for the time being.

I've read in places that if you get pulled for speeding and they notice you have a restricted license they can easily order it to be tested (at your expense). Im not sure what the penalty would be for riding without it, possibly not much considering its not a huge difference but I guess it depends on the officers and where they draw the line. Also anything to keep insurance down (including behaving and not getting into trouble with authorities) is a bonus. Insurance is invalidated without it.

The only thing is I havnt ordered any new pipes or filters because I don't know what effect it will have on the bike with it on. Presumably not much so long as the exhaust has baffles which will restrict flow coming out the other end. Either way I think its worth waiting till it comes off.

New pipes + sport filter (K&N air filter) = win. But because of the restrictor, you're honestly better off with stock. The washer or w/e can easily be removed.

Also, I'm pretty sure they can't force you to test the restriction on your own expense.

[Blinx]

Yeah, I think I'll wait till after it comes off before I get some new bazookas.

Well it did seem a little harsh to me but then again how else can they get you to proove it? Surely certification can't be enough becasue you can easily drop the washer out and its not easily visible I dont think. I'll have a look and find out. I'm sure I read somewhere they have the power to do that at your expense.

[switch]

Yeah, I think I'll wait till after it comes off before I get some new bazookas.

Well it did seem a little harsh to me but then again how else can they get you to proove it? Surely certification can't be enough becasue you can easily drop the washer out and its not easily visible I dont think. I'll have a look and find out. I'm sure I read somewhere they have the power to do that at your expense.

The trick about restrictions is that it's not provable on the road if a given bike is restricted or not. The problem is if you're involved in a crash and they have reason to suspect the bike is not restricted as per specified - in this case if they look your bike over carefully... you're in a LOT of trouble.

[Blinx]

aha, yeah that makes sense. especially as it invalidates your insurance i guess

[IgorVigor]

If they suspect your bike isnt restricted, they can take it from you on the spot...

They will take it to a dyno and measure the actual power...

If you get your own dyno chart, displaying your bike is 33bhp or less, then they probably wont challenge it....

TBH though, unless your being a complete tool, or you decide that 120mph cruising on the motorway (not on the fmx, on a big "restricted" bike), they wont really care tbh...

[Blinx]

Yeah I guess. Still safest bet to keep it in really. You never know whats around the corner

[IgorVigor]

thats fair enough...

in my opinion a bike that produces a max of 40bhp at the crank (which really is going to be around 33 at the rear wheel) its ok...

I still dont see why they put the limit at 33bhp (25kw actually, which is 33.52bhp :P) just to fit in with europe's regs...

Insurance can be enough of a killer :P

Oh and switch, it sounds like your country has similar rules...
in the uk if you are between 17 and 21 you can only take 1 full bike test, which means you can have any bike, as long as it produces no more than 25kw, which means that more power bikes have to be restricted...for 2 years....

A few bikes (like the FMX and the Suzuki SV650 for example) can be fitted with manufacturer restrictors, but for all the other bikes, especially older bikes, Fi International can supply them. They are a bunch of money making, scam artists really...only registered mechanics can order the restrictors which consist of normally a washer or washers that fit between the carb and the engine, and you get a nice little certificate, and your bike details "stored on a database". This will set you back between £150 and £250 depending on bike and mechanic charges for fitting them...

Newer bikes with FI (Fuel Injection this time :P) normally have a plug in restrictor, throttle stop or remapped cdi as restrictors, so it doesnt make the bike so unrideable as can be the case with the washer restrictors...

As you can guess, the amount it costs for the Fi International kit, spawned a lot of arguments, causing many people to either not restrict, or work out ways around it...ebay normally has many listings for old restrictors for a more reasonable sum of £10 to £40...other people got hold of the dimensions of the washers and got some for a couple of quid from tool shops etc....

Sad really...considering that if you are over 21, you can go and do and have a little bit of training, usually on a 500 twin (CB500, ER5, GS500), take your test on it....and then buy ANY power bike you want...:S
you can literally go from never ridden a bike before, to riding a Hayabusa or ZX12R in a few weeks :S...

And yet they are apparently safer for doing that, than a 18/19 year old would be? I dont think so!.......

I hope that explains the restrictors and a bit of stupid uk law :S

[Blinx]

it is all pretty daft really. i guess there could be a pretty penny to be made by taking the restricters from Fi international, remaking them and selling them for half the price to anyone who is keen. hmmmmmm business venture anyone. all you really need is a rolling road certificate to proove the power output. i think when i come to take mine out il post the dimensions on here and sell it. i dont really care for making money out of it but to help save anyone else avoid what i had to pay out

[switch]

So did you fix the problem?

What did you check and doublecheck?