A
andyinchville1
Guest
HI All,
I am in the process of trying to make a tuned pipe for out 70CC engines.
I am using a program that I downloaded that is supposed to give you all the
crucial dimensions for the pipe itself BUT It asks for some measurements and information that I do not have or can get easily.
I am hoping that the collective power of our brains can come up with all the info needed by the program so I can make a proper tuned pipe and report how well it works.
Some of the information I will need is:
1) The effective exhaust port diameter (mm).
2) Diameter at the Barrel Flange ( I am not sure what this is actually) (mm)
3) Length from the piston face to the flange
4) The exhaust port opening angle (degree ATDC)
5) Engine speed at max power (RPM)
5A) Mid section Mean exhaust temp at Max Power (degrees C....need an
infrared non-contact thermometer for this I guess)
Other info that may be helpful is: (this is used in another program but I think the program I am using can make do with the items 1-5A above)
6) Bore (mm)
7) Stroke (mm)
8) Connecting Rod Length
9) H.P.
10) exhaust port start opening angle (degree)
11) Exhaust port full open angle (degree)
If I can get all the needed info above I and a friend will begin the build ASAP and report our findings.
Thanks in advance for any and all help....Looking forward to making
some serious power (Hmmm we may soon be needing some sprockets in the 20T range before long!...HA)
Andrew
I am in the process of trying to make a tuned pipe for out 70CC engines.
I am using a program that I downloaded that is supposed to give you all the
crucial dimensions for the pipe itself BUT It asks for some measurements and information that I do not have or can get easily.
I am hoping that the collective power of our brains can come up with all the info needed by the program so I can make a proper tuned pipe and report how well it works.
Some of the information I will need is:
1) The effective exhaust port diameter (mm).
2) Diameter at the Barrel Flange ( I am not sure what this is actually) (mm)
3) Length from the piston face to the flange
4) The exhaust port opening angle (degree ATDC)
5) Engine speed at max power (RPM)
5A) Mid section Mean exhaust temp at Max Power (degrees C....need an
infrared non-contact thermometer for this I guess)
Other info that may be helpful is: (this is used in another program but I think the program I am using can make do with the items 1-5A above)
6) Bore (mm)
7) Stroke (mm)
8) Connecting Rod Length
9) H.P.
10) exhaust port start opening angle (degree)
11) Exhaust port full open angle (degree)
If I can get all the needed info above I and a friend will begin the build ASAP and report our findings.
Thanks in advance for any and all help....Looking forward to making
some serious power (Hmmm we may soon be needing some sprockets in the 20T range before long!...HA)
Andrew