Fire Breathing FP1

Phil. · World Chat Champion Joined: 02 Feb 2002 Karma :

Being not the most techincal of bikers i'm left confused as to why it has large flames out of the pipes. I always 'thought' only gas should be leaving the cylinder.

Do the homologation bikes have this as well? Can you still pass an MOT if your bike double as a barbeque?

bikedudextrm · Traffic Copper Joined: 16 Oct 2003 Karma :

I has that once, does look cool. My spark plugs were naffed.

Couger · Trackday Trickster Joined: 01 May 2002 Karma :

I think It's something to do with the Oil Sump not being big enough?? I heard this somewhere but I don't claim to understand these things..Keith?

Cheers.
Cougs
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craigT19 · Jolly Green Giant Joined: 09 Feb 2002 Karma :

My ninja did it for a bit problem was it was doing it because my engine had a large hole in it, with a conrod sticking out Confused

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kev · I Hump Things Joined: 07 Oct 2002 Karma :

It has blows oil past the piston rings causing the flame.
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Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

As Kev says it blows oil past the ring, which then burns off in the exhaust. Quite possibly forcing the oil past the rings due to high crankcase pressure, which is likely to be down to a poor breather system and a tiny sump volume.

The old Norton rotary racers used to do it as well, but that was because the used a total loss lubrication system, drawn through by the exhaust gases. They landed up dumping a load of oil into the exhaust.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

Phil. · World Chat Champion Joined: 02 Feb 2002 Karma :

So would i be right in thinking it would make for a un-reliable engine?

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Maybe longer term, but it is a race bike. Anything beyond the checkered flag means that they could have tuned it some more!

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing