What class will this fit into?

[Tard]

A clear reason?

24.2.1 Solo motorcycles shall have two engine capacity classes:
4 stroke 55-150cc

24.2.3 The maximum capacity for rebored engines shall be:
4 stroke 55-150cc – 158.09cc

Definitive I Think.

Fook me...rules are rules, respect and all that....but bear with me a second/minute/hour here...

It's 100% legal to have a 150cc engine and probably pay someone $$$ to bore, stroke, hotcam, etc to 158.09cc. Don't have any issue with this...and full respect to the engineers amongst 'us' - that's what buckets is all about.

BUT it's illegal to buy a stock 155cc engine???

It might be my fooked up logic but one way the rules could be interpreted are...
A) 'Probably more' money spent supporting NZ's small engine building industry boring to 158.09cc - which I'm not against of course
B) But an engine that's been bored 'directly' by a manufacturer to 155cc - 'cause essentially that's all a 155cc pitbike engine is isn't it(?) isn't cool?

As long as engine capacity doesn't exceed the 158.09 limit it shouldn't matter Isn't one aim of buckets to keep getting as many riders involved as possible?

[Moooools]

Naa, Different beasts. 125 = economy biased 2 valver. 150 = 4 valve decent motor.

Sorry I should have specified:

They offer a compete top end kit complete with 4 valve head.

[Yow Ling]

Fook me...rules are rules, respect and all that....but bear with me a second/minute/hour here...

It's 100% legal to have a 150cc engine and probably pay someone $$$ to bore, stroke, hotcam, etc to 158.09cc. Don't have any issue with this...and full respect to the engineers amongst 'us' - that's what buckets is all about.

BUT it's illegal to buy a stock 155cc engine???

It might be my fooked up logic but one way the rules could be interpreted are...
A) 'Probably more' money spent supporting NZ's small engine building industry boring to 158.09cc - which I'm not against of course
B) But an engine that's been bored 'directly' by a manufacturer to 155cc - 'cause essentially that's all a 155cc pitbike engine is isn't it(?) isn't cool?

As long as engine capacity doesn't exceed the 158.09 limit it shouldn't matter Isn't one aim of buckets to keep getting as many riders involved as possible?

Yea that seems to cover it, you just need to follow the rules !
Allowance for rebore is just that, not an excuse to buy a 155cc engine
Life isnt always fair, get used to it

[koba]

Sorry I should have specified:

They offer a compete top end kit complete with 4 valve head.

Ahh, right. I guess thst shows how hard I looked!

Note to self: Really cheap CBR125's could be viable.

[CHOPPA]

Yea that seems to cover it, you just need to follow the rules !
Allowance for rebore is just that, not an excuse to buy a 155cc engine
Life isnt always fair, get used to it

Its not like anyone I met in Wellington is gonna care and if someone does care ill just remind myself that I dont give a fuck and id go home and have a little laugh to myself

[F5 Dave]

. . .
Note to self: Really cheap CBR125's could be viable.

George's 125 to 150 conversion showed that they aren't that similar. You will note that if you look at the side of my MB engine I have ground the word **nda off. (Must do the same to the chain side cover).

[sidwyz]

Its not like anyone I met in Wellington is gonna care and if someone does care ill just remind myself that I dont give a fuck and id go home and have a little laugh to myself

I dont know you personally, most everyone knows who you are on here because of your profile and efforts and results in sbk. Great

You are acting like a real cock here, if you wanna race buckets and/or use it as training and/or keeping your eye in or like most of us having a great time, just fucking read the rules and follow them there not hard and options are plenty. Particularly if you intend to be at the pointy end of the field!

Out of interest would you turn up to the nationals on your BMW with lets say the registration plate and side stand still attached?

[CHOPPA]

You are acting like a real cock here

lol fair comment!

[Moooools]

George's 125 to 150 conversion showed that they aren't that similar. You will note that if you look at the side of my MB engine I have ground the word **nda off. (Must do the same to the chain side cover).

Well they share crankcases, transmission, clutch infact the entire bottom end apart from the crankshaft.

That big bore kit has all the parts including the crankshaft or can be done without the crank shaft and the some sleaves have to be put into the piston. Probably not the best idea looking at the results of georges attempt. However with the propper crank shaft it looks to be working well.

[koba]

Note to self: You made the right choice of engine.

[Moooools]

Note to self: You made the right choice of engine.

Who did and what engine?

[koba]

Who did and what engine?

I did. MB100. Sure your pussy diesel burns me now but just you wait sonny jim... In another 4 years I will have a monster!

[Moooools]

In 4 years i will hopefully be a qualified mechanical engineer and work will begin on my koba beating perfect bucket engine.

Perhaps a tandem twin 100 two stroke.
Or a v twin.
or something diesel and turbo.


Watch your back sir.

[koba]

In 4 years i will hopefully be a qualified mechanical engineer and work will begin on my koba beating perfect bucket engine.

Perhaps a tandem twin 100 two stroke.
Or a v twin.
or something diesel and turbo.


Watch your back sir.

I'll be able to keep an eye on it as I watch you disappear into the distance!

[CHOPPA]

A clear reason?

Direct from MNZ website

24 ROAD RACING - MINIATURE

24.1 The Miniature Road Racing class or `Bucket Racing’ as it is also known, shall be
deemed to include solo motorcycles and sidecars.

24.2 Motorcycles Technical:

24.2.1 Solo motorcycles shall have two engine capacity classes:
F4 2 stroke 55-100cc
2 stroke 55-125cc air cooled
4 stroke 55-150cc
F5 2 stroke 0-50cc
4 stroke 0-100cc air cooled

24.2.2 Sidecars shall have one engine capacity class:
2 stroke 55-100cc
2 stroke 55-125cc air cooled
4 stroke 55-150cc

24.2.3 The maximum capacity for rebored engines shall be:
F4 2 stroke 55-100cc - 104cc
2 stroke 55-125cc air cooled - 130.5cc
4 stroke 55-150cc – 158.09cc
F5 2 stroke 0-50cc - 53cc
4 stroke 0-100cc - 104cc

Definitive I Think.

I have been thinking for a while on someway that this rule is not so clear cut.....

If a forza non race bike comes out with a 155cc engine its not legal to race it as it started out life larger then the required 150cc however if it was a 150cc it could be modified to a 155cc.

Now on that same rational you shouldnt be allowed to destroke a 185cc engine or fit a smaller barrel to a 150cc 2stroke engine because it started life out as a 185cc etc....

At the moment the "clear ruling" is that I could de-stroke a 185cc engine to 150cc then bore that to 158cc so technically I could take the 155cc engine put a 125cc barrel on it then do a mod and take it out to 155cc??