Meaning of jet sizes

[Paull]

Hi All,

I what to know the sizes of the holes in the jets in mm i.e 110 = what, so I can re drill the jets i have until i hit the right number.

I have built a new exhaust system to quieten the 550/4 chop down, 2 into 1 into a common silencer box under the frame but know it runs rough. (needs more fuel).

With 4 straight throughs, it went like a scolded cat, but it was way to load.

With the new system it is whisper quiet (and before anyone says its to restricted the silencer is of a re direction type. Newton third law and all that).     

Thanks

Paull

[Bryanj]

Normaly, if you restrict the exhaust you need less fuel and if your mains are 110 they are way oversize compared to standard

[Paull]

Hi Bryanj,

The pipes are none restrictive, they have been engineered too oppose sound waves against each other.
The design is simple but very effective.

I have 98 mains and it ran very will indeed.

Because I have re engineered the pipes in such a way that they scavenge a lot more gases out of the exhaust ports by creating a low pressure bridge between exhaust into the pipes and out of them , leaving a space for more fuel air mix making for bigger bang and more power.

This is the theory anyhow (I have done a mathematical model of it and it should work well).

Paull   

[SteveD CB500K0]

To answer your question, I believe that 110 = 1.1mm

I've never done it though...

[Paull]

Thanks Steve.