Stubbie'd my endcan.

[Richie]

Originally Posted by ad53ggz

So how much should i cut off my fuel oval can? Anyone else done it to a fuel exhaust (any pics) or do people think i should just wait and get the scorpion street extreme? thanks Aaron

We used this formula.

Area of Primary Pipe = RPM ? Cylinder Size ?649cc

This determines the pipe's cross-sectional area, from which we can calculate the ID. Typical exhaust pipes are 18ga. (wall thickness of .049”), so the OD will be .098” larger. From this we can construct a formula for an 8 cylinder motor, and factor in the 18ga. wall thickness:

Area of Primary Pipe = RPM ? Motor Size ? 705,600

Pipe ID2 = RPM ? Motor Size ? 705,600 ? .7854

Pipe ID2 = RPM ? Motor Size ? 554,177

ID = (RPM ? Motor Size ? 554,177).5

OD = (RPM ? Motor Size ? 554,177).5 + .098”

then divided by 4 to make it a V-twin....
then cut off to what looked good.

[dizzyblonde]

Originally Posted by ad53ggz

So how much should i cut off my fuel oval can? Anyone else done it to a fuel exhaust (any pics) or do people think i should just wait and get the scorpion street extreme? thanks Aaron

speak to yorkiechris, he's just done it to his and after this weekend I'm rather deaf!! he did rather a good job on it too,




and rather annoyed cause it were louder than my scorpion..lol

Originally Posted by Richie

We used this formula.

Area of Primary Pipe = RPM ? Cylinder Size ?649cc

This determines the pipe's cross-sectional area, from which we can calculate the ID. Typical exhaust pipes are 18ga. (wall thickness of .049”), so the OD will be .098” larger. From this we can construct a formula for an 8 cylinder motor, and factor in the 18ga. wall thickness:

Area of Primary Pipe = RPM ? Motor Size ? 705,600

Pipe ID2 = RPM ? Motor Size ? 705,600 ? .7854

Pipe ID2 = RPM ? Motor Size ? 554,177

ID = (RPM ? Motor Size ? 554,177).5

OD = (RPM ? Motor Size ? 554,177).5 + .098”

then divided by 4 to make it a V-twin....
then cut off to what looked good..

[Richie]

last line....

Originally Posted by Richie

last line....

LOL and thanks dizzyblonde pm sent to yorkiechris

Sounds about right, heheh.

Sounds bloody good btw Richie

[yorkie_chris]

http://forums.sv650.org/showthread.p...haust+tweaking

Search function dudes

LISA

Do u stil have that art can in ur spare room
Im after a new can wondering if it was for sale????
n how much ud want for it

Thanks LISA

Nice job there Richie, looks the dogs danglies, i was toying with the idea to do that with the Triumph, but further investigation by some more technically apt people than myself said it'd probably run a whole lot richer/leaner and would have to start remapping the engine...too much hassle in my eyes
Is this also the case on the SV or will it run different as it has 2 less pots?

Originally Posted by Richie

We used this formula.

Area of Primary Pipe = RPM ? Cylinder Size ?649cc

This determines the pipe's cross-sectional area, from which we can calculate the ID. Typical exhaust pipes are 18ga. (wall thickness of .049?), so the OD will be .098? larger. From this we can construct a formula for an 8 cylinder motor, and factor in the 18ga. wall thickness:

Area of Primary Pipe = RPM ? Motor Size ? 705,600

Pipe ID2 = RPM ? Motor Size ? 705,600 ? .7854

Pipe ID2 = RPM ? Motor Size ? 554,177

ID = (RPM ? Motor Size ? 554,177).5

OD = (RPM ? Motor Size ? 554,177).5 + .098?

then divided by 4 to make it a V-twin....
then cut off to what looked good.

Ahhh, good ol' Army precision engineering at work.