Custom exhaust for gs850, tuneable straight pipe

[Agemax]

realistically, how far do you plan to go designing your exhaust?
so, you create a prototype according to all your maths and calculations and tuning theories and get it made, bolt it on, and the bike runs like a pile of crap............
then where do you go? chop it up and take a few mm off each header length, or add a few mm in diameter to the headers, or add a few mm to the length of the baffle?
just how much time and effort do you plan to waste before you give up and go buy a ready made exhaust that works, straight out the box, for a few hundred bucks!

 

[blackstag]

time is never wasted if i have learned something

i dont care to just go out and by an exhaust. I am doing this to learn about exhaust systems, their effect on the bike and what is needed to create a properly tuned exhaust system.

the information that I have learned thus far has given me a great sense of accomplishment. i understand things that I would have never thought a second about before.

i seem to have offended you by doing this. its up to you whether or not you want to continue coming back to read about my endeavors. I am by no means twisting your arm and making you come back.

to answer your question, i will continue to tune the system until I am happy with the results.

 

[tkent02]

We need pictures.

 

[Steve]

We need pictures.

And dyno charts.

.

 

[Agemax]

time is never wasted if i have learned something

i dont care to just go out and by an exhaust. I am doing this to learn about exhaust systems, their effect on the bike and what is needed to create a properly tuned exhaust system.

the information that I have learned thus far has given me a great sense of accomplishment. i understand things that I would have never thought a second about before.

i seem to have offended you by doing this. its up to you whether or not you want to continue coming back to read about my endeavors. I am by no means twisting your arm and making you come back.

to answer your question, i will continue to tune the system until I am happy with the results.

you have not offended me by any means. i will keep coming back to read this thread, i enjoy a good laugh

 

[gs850cafe]

We will be looking forward to the thread called "How do I rebuild my melted 850?" :-\\\

.

ill be looking for that

take my advice cause ive done all the newb bike stuff

ive hacked a set of mis matched stock exhaust for a cool straight pipe sound....sounded like crap...a tractor more or less

i bought a 4-1...took out baffle...thought it was cool to haul ass in town between buildings

then i relized how annoying a really loud bike is..so i made a rather quiet baffle with just enough tone to hear it but not to be stupid loud...

go an buy stock exhaust, 4-2 or a 4-1....unless your a good welder and know how to fabricate stuff then make your own

and i do own an 850...its just enough power for amusement...

but its STILL an 850..i wanted to make mine fast with pods n crap...that changed quick...now its slowly returning to stock the next few months

 

[blackstag]

well i dont have access to a dyno and i dont have pictures because i am still working my way through the theory and practicality of it

i can weld, so im not worried.

well see where i go from here.

i know the system will not be a 4 into 1. the best best scenario for my bike is going to be a 4:2:1 system. 4 to1 systems tend to favor max power. i would like to shoot for best mid range torque since it has been already pointed out, thats where I will be spending most of my time.

 

[blackstag]

Stumbled across this fellow earlier today. He took the old method of a tuneable baffle and actually created a pivoting baffle. I thought it was interesting at least

http://coryscustomparts.com/catalog/adjustableBaffles/features?gclid=CO_Pq4PH_roCFbBAMgodbE4A_A