Moped rider
Hi, I have a query regarding the F3 rules.
Is it possible to take a 600cc bike and remove a piston & rod, spark plug and injector and run it (after tuning it to run on three of course) This will therefore give you a 450cc triple in effect with the fourth cylinder doing nothing.
Your thoughts? Cheers.
Re(tarder)
i doubt this would really be practical as it would put out of balance the entire engine. it would probably only just run. unless you change out cranks and all and then somehow centrally balance the engine to prevent fatigue on the frame.
but hey i have never heard of it being done so it may be possible. for a shitload of money i imagine.
but seing as you can run a 450 4 cylinder why not a 3.
Forum whore
yes it is legal, any multi under 450cc is legal,Originally Posted by jnr
i know some people have been talking about this,
the other option is to sleeve down, or de stroke a 600 as well,
Moped rider
That is an interesting option to also sleeve it down, would have less drama with the unbalanced 'triple' also...
Registered User
Nope cant be done without welding up the heads and replacing the valves in a more central position.Someone whom shall remain nameless at this point is turning 600 into a 450 triple as we speak and if this guy cant get it too work then it cant be done.Looking forward to seeing it finished
Moped rider
Hi Billy, thanks for your reply, I guess I'm not the only one thinking outside the square on this one!!
Forum whore
with regard to sleeving - wouldn't it be easier to take a 400-4 up to 450 as opposed to reduce a 600-4 to 450?
it's not a bad thing till you throw a KLR into the mix.
those cheap ass bitches can do anything with ductape.
(PostalDave on ADVrider)
Moped rider
Yeah but looking at it for different reasons, I'll let you guess at what they might be, still under wraps at the moment and don't want to give the game away.
Forum whore
This may well be an option. Shorten the rods and shave metal of the head/block/base.
Would probably rev like a bastard too...
Re(tarder)
id be impressed if someone got a triple from a four but a shortened 600 sounds easy enough (relatively speaking).
What are the rules in F3 re engines. Does the engine as a whole have to be proddy or just the block???
Retirement with a cause
WHY ??? I cant see an advantage
I love to go outside the square myself but there is a few better more reliable ways to achieve the same result .
Forum whore
if Burt Munro, John Britten or Kim Newcombe thought that way we would be a boring little island in the middle of no where
this is why F3 is such a cool class and needs to stay, you can do stuff like this still
Here for the arcade.
I suggest getting 9 RG50 motors and putting them together. More cylinders = more power!
5 cylinders up front, 4 rear. RC211V style. It could work. Got to do engineering so I can actually make these silly ideas...
Come warm yourself by the fire
i would not even bother making a triple like that - right now i can feel unbalanced firing order of a 4 - so to completely unbalance it by making it a 3 would be like riding a lambretta without the spare wheel.
What you could do is make the 4th cylinder a balancer cylinder like the old 3 cylinder scoots
Reactor Online. Sensors Online. Weapons Online. All Systems Nominal.
Saving the goat....
What about cutting up the head to only have 3 cylinders, shortening the cams, cutting one cylinder off the block, shortening the crank, and filling up the crankcase hole where the other cylinder was?
Is it still beastiality if ya fuck a frozen chicken??
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