Two-Stroke Pipe Building Information

[90GTVert]

May 30, 2016 9:16:05 GMT -5 tsimi said:

I hope I did it more or less correct. Please don't take those numbers as 100% correct it was kinda hard to measure it.
Here some info:

Flange: ( ? ) *not sure what you call that. (End part of section 4)
ID 27.7mm
OD 35mm

Stinger Tip: (Section 1)
Length: 36mm
ID 22.6mm
OD 25.1mm

Stinger: (Section 2)
Length: 150mm
OD 22.2mm

Silencer:
Length: 270mm
OD 60mm
inner hole ID 19.8mm
tip length: 75mm / ID / 22.2 / OD 24.8

Section 4 is made out of 9 smaller cones.

May 30, 2016 16:10:18 GMT -5 190mech said:

Well done tsimi!!Looks like a nice pipe!Headpipe is 1.1 degrees,2 stage diffuser,1st stage 36.1-178-68=5.3 degrees,2nd stage 68-128-100.2=7.3 degrees..2 stage baffle,1st stage 100.2-70-87.5=6.7 degrees,2nd stage 87.5-140-24.5=12.7 degrees..total length 790,headpipe is 28% total length (30-32% ideal),headpipe+diffuser is 66.5% total length (64-68% ideal)..
From the belly back is the same as the C16,the fwd sections were redesigned for a slightly lower max rpm,but smoother delivery..As usual Yasuni has built a pipe that others will copy(maybe even me!!),it should run verrry well!!!