The Britten in F3?

[GSVR]

I'm wondering if John Britten had built his bikes with a displacement of 650cc would they be allowed to race in F3 under the current rulebook?


Also at what point does an engine become the OEM equipment of the bike builder. eg. If someone was to manufacture some new crankcases and use SV650 barrells, gearbox etc whose engine would it be? Fisher in the states make a 650cc bike based on a Hyosung engine if that was to run in F3 would it need to run Hyosungs airbox or Fishers?


Would be nice if people replying quoted the relevant F3 rules to support their views on this. No use spending large amounts of money and time on a bike only to find out its illegal due to some minor technical issue.

[GSVR]

Dr Robert? Anyone?

[White trash]

Don't have a rule book handy. Can't REALLY comment.

Although I was under the impression (and I may be well mistaken) that the engines used in F3 must be originally road bike motors. Hence there's not a shitload of 250 GP bikes out there cleaning up.

[Billy]

Don't have a rule book handy. Can't REALLY comment.

Although I was under the impression (and I may be well mistaken) that the engines used in F3 must be originally road bike motors. Hence there's not a shitload of 250 GP bikes out there cleaning up.

Incorrect there Jimmy,Nowhere does it say roadbased engine,However the rules strictly govern what modifications can be applied too a 250 multi cylinder 2 stroke.Something that definitely needs changing as its 10 years out of date

[White trash]

Shit, where's my rule book!

So you mean as long as you don't modify it, you COULD race a stock Honda RS250 in F3?

[lostinflyz]

Shit, where's my rule book!

So you mean as long as you don't modify it, you COULD race a stock Honda RS250 in F3?

nope rules strikly prohibit non production based 250 two stroke anythings. soo sad.

[White trash]

nope rules strikly prohibit non production based 250 two stroke anythings. soo sad.

Fair enough. It is, afterall, a Formula class and not a GP class.

[lostinflyz]

has a flick through the mnz regs. the f3 rules read

"The Formula 3 Championship class will exist primarily for Production Based machines."

read that how you will. but there is nothing more specfic than that.

so a britten 650 would be included. there is nothing in there to stop someone trying but they would have to at least completly build the motor from scratch and most likely release it as a production bike.

If the fisher crew make a bike based on a hyo 650 itll need the stock airbox and element on it to be legal. No matter how much you try to make it not a hyo motor it still would be unless it had only the bearings outta the motor (for instance)

[GSVR]

has a flick through the mnz regs. the f3 rules read

"The Formula 3 Championship class will exist primarily for Production Based machines."

read that how you will. but there is nothing more specfic than that.

Don't wish to get a pedantic but you have taken half a sentence from the introduction to the rules.

But never the less it does state that this is what the class 'primarily' exisits for which implies that theres some secondary reason for its existence otherwise the word 'solely' would have been used.

I have never understood the rules and can only base my opinion on whats legal on what has been allowed to race in the past and present.

[Billy]

Don't wish to get a pedantic but you have taken half a sentence from the introduction to the rules.

But never the less it does state that this is what the class 'primarily' exisits for which implies that theres some secondary reason for its existence otherwise the word 'solely' would have been used.

I have never understood the rules and can only base my opinion on whats legal on what has been allowed to race in the past and present.

Excellent point made,The formula 3 rules are so fragmented and have new rules added in without the deleting of old rules they are too hard to follow leading to such scenarios as was experienced in this years championship

[lostinflyz]

yep thats the first sentence of the intro. its the only general reference to production based anything.

i think its vauge so that basically motors can come from a wide variety of sources and frames can be from all sorts of places.

but as you say its all rather useless. basically if you build something prototype and it cleans up its likely to get banned in the name of spirit of racing.

[cowpoos]

Fair enough. It is, afterall, a Formula class and not a GP class.

you could stick a cr500 water cooled engine in the chassis and race it!!

[cowpoos]

I'm wondering if John Britten had built his bikes with a displacement of 650cc would they be allowed to race in F3 under the current rulebook?


Also at what point does an engine become the OEM equipment of the bike builder. eg. If someone was to manufacture some new crankcases and use SV650 barrells, gearbox etc whose engine would it be? Fisher in the states make a 650cc bike based on a Hyosung engine if that was to run in F3 would it need to run Hyosungs airbox or Fishers?


Would be nice if people replying quoted the relevant F3 rules to support their views on this. No use spending large amounts of money and time on a bike only to find out its illegal due to some minor technical issue.

I think the rules are pretty open...but there are some definate point regarding ex gp type bikes and two strokes...but there is a heck of alot of freedom for inovative design...which doesn't need to be costly if your a handy engineer and pretty good at physics/maths...

[Mystic13]

Excellent point made,The formula 3 rules are so fragmented and have new rules added in without the deleting of old rules they are too hard to follow leading to such scenarios as was experienced in this years championship

And that would be?

There was an appeal about something that meant they couldn't finalise the results. What was that about?

I was wondering whether the Ozzy450 would be allowed to stay because you know there will be more and would MNZ be happy about this. Is it a production 450. Nope. But it's just such a neat idea.

Can someone fill in the blanks seeing as I missed the news.

[GSVR]

I'm wondering if John Britten had built his bikes with a displacement of 650cc would they be allowed to race in F3 under the current rulebook?

I'll add two more questions for people that would like this one simiplified.


Can you build your own engine under the current rulebook in F3?

Can you build your own frame under the current rulebook in F3?