2 stroke exhaust

[armedpitbull]

how long can the exhast be (after chamber) before affecting performance?
____________________
how can i write my signature when my pen wont write on the screen??

[veze]

are you thinking of making one up then? what bikes it for?
____________________
tlm50,mt5,sr50. rs125 extrema, cbr 400rr nc29 suzuki gs500e.Honda cbx250 rs . FJ1200 .fz6,fjr1300

[armedpitbull]

im converting rs 125 to under seat exhaust, so it would mean lenghting the pipe between the chamber and can.
____________________
how can i write my signature when my pen wont write on the screen??

[MaybeGuy]

a GPR125 has an underseat exhaust, and pretty much the same engine.
would probably be easier and better to modify one of them to fit.
____________________
Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[stevo as b4]

Keep the diameter of the stinger (pipe from expansion chamber to silencer) the same as it is now, and i doub't the performance will be affected in any noticable way. Diameter is far more important than length, and next is the severity of the bends. This point is not directly due to how it affects the pressure waves, but if you had two or more 90deg tight bends, then it would start to act more like a silencer baffle with a possible restriction to flow.

If the route to the silencer is very long, then id consider going up slightly in size after the exit from the chamber. Say a 2mm increase in bore size for a long run would be enough to ensure performance is not handicapped. Lots of 2stroke bikes have long pipes from the expansion chamber to the silencer, (Most trail/enduro/MX bikes for a start.

[armedpitbull]

thanks for your help. will post pics when done
____________________
how can i write my signature when my pen wont write on the screen??